Home
LACOVAL Online Tool Manual - Geo-Wiki
Contents
1. eport Generation Generate Report Land Cover Data Additonal Data Geocoding Google Earth Labels LACOVAL main page o Note if you login with a newly registered user for the first time it may appear that you have to make a refresh of your browser after loading the LACOVAL tool This is due to a known issue with the loading of JavaScript files within the Geo Wiki Refractor module loader LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 10 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU EN land cover changes Geo fille information 5 SOFTWARE MANUAL Under User Profile the user can enter more details name organization Geo Wiki ID if needed U O E Mail lacoval First Name Last Name Organisation GeoWiki Identifier save Changes User Profile Management window If you want to access geotagged photos and land cover information acquired with the Geo Wiki Pictures mobile app you need to register on Geo Wiki http Awww geo wiki org registration and enter your Geo Wiki ID into the LACOVAL user profile GeoWiki Identifier photos need to be uploaded from your smartphone to Geo Wiki org using your mobile connection or Wi Fi access e Help information can be accessed by clicking on the Getting started button by downloading the user manual or by sending
2. Opera Version 12 02 hitp www opera com nternet Explorer Versions 9 and 10 http vindovvs microsoft com en gb internet explorer dovvnload ie e Not supported Safari due to incompatibility with the Google Earth plug in The application requires the Google Earth plug in Check if the plug in is already installed on your system under http Awww google com earth explore products plugin html Note that Linux systems do not support the Google Earth plug in Microsoft Excel 2007 or newer is required in order to open accuracy reports in xlsx format Google Earth installation needed to view exported point samples in kml format LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 6 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TUKE land cover changes Geo fille SOFTWARE MANUAL 2 2 Validation principle The LACOVAL online validation tool has been developed as a contribution to more standardised quality assessment of land cover data by using a documented approach and an easy to understand user interface which allows people who are familiar with the basics of land cover mapping to evaluate the quality of a map by following a set of pre defined basic validation steps The following figure provides a schematic overview of the general validation steps in LACOVAL Data Online Validation get
3. Layer Properties General Source Extent Display Symbology Fields Joins 8 Relates columns and Rows 56 40 F Cellsize X Y 0 0011602699 0 0011602699 Uncompressed Size 2 19 KB Format TIFF Source Type discrete Pixel Type unsigned integer Pixel Depth 8 Bit o Confirm with Next LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 48 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU rN land cover changes Geo fille SOFTWARE MANUAL un e 2 Define Land Cover Classes Generate Sample S Land Cover Classes Please define Land Cover Code Nomenclature of Land Cover Dataset Land Cover Name 2 H M Save Class Add Class previous next LACOVAL sample generator workflow step 2 of 5 o The current LACOVAL prototype provides access to the land cover data via VVMS rendered PNG image and not via a live link to the attribute table of each layer As highlighted during the Upload data procedure it is therefore recommended to use an existing list of the Land Cover Code number and Land Cover Name text or number for validation in a text file see definition below This information can be retrieved from a GIS or from the layer s metadata o Alternatively land cover codes and names can be manually entered and added to text field below with Save Class Add Class Direct editin
4. 0 0 1 10 2 10 3 10 4 10 5 10 6 10 1 10 8 10 9 10 10 10 11 20 20 20 21 30 30 30 91 40 100 100 255 255 Line breaks required after each entry Hint for validation of an 1 n relation a reclassification of the continuous raster to a categorical raster in GIS is recommended LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 20 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TUK land cover changes Geol ille SOFTVVARE MANUAL Notes Por many validations it is recommended to define an additional backdoor class for doubtful cases e g 999 unknovvn All samples for which no validation can be done for example due to the lack of reference data could be assigned to this class cases where a land cover map of a given area does not contain all classes of its underlying data model e g a CORINE LC subset which contains only 25 classes out of the full range of 44 classes in the data model it is recommended to use the full list of classes as one or the other classes might have been simply omitted during map production and should thus be included in the validation f no class code is defined for a class present in the dataset no samples will be placed within that class this is particularly helpful to exclude classes for which no samples should be generated as validati
5. LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 32 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU land cover changes Geo ille MY SOFTWARE MANUAL nun LACOVAL development funded by ESA ESRIN J Layer Properties USA Innsbruck a Labels deprecated Fields General L Display l n d Unique Value Transparency 0 Nevv symbology LBTYP Add dass Label ari N le IJ R Q z mu Width 0 26 Restrict changes to common properties Restore Default Style Load Style e Within this window you can style your shapefile to export the style of the shapefile press Save Style n the next window select SLD File as data type gt Save 2 8 3 ArcMap2SLD Generation of SLD in ArcGIS o Download and install ArcMap2SLD software open source http wald intevation org projects arcmap2sld o Open ArcGIS with release 1 3 0 ArcMap2SLD also supports ArcGIS 10 0 o Load Shapefile shp or Layerfile lyr you want to convert to SLD only vector files supported load a single file for SLD export File Edit View Bookmarks Insert Selection Geoprocessing Customize Windows Help beds Bx b 124630 v uzi EZ k EL m QANG E O T t r oy i Editor Drawing k O A Table Of Contents kja ega amp Layers E E 1 Geb ud
6. requires your Geo Wiki ID entered into the user profile Panoramio access Panoramio photos Confluence Points access thematic information from the Degree Confluence project External WMS paste the WMS link to the field and click in the map window to load the WMS layer WGS84 EPSG 4326 and PNG must be supported Format for WMS links must be as follows example http geonode geowiki org geoserver wms LAYERS cite 3Araster without geographic bounding box http geonode geo wiki org geoserver wms LA YERS cite 3Araster amp bbox 10 40 20 50 with geographic bounding box 4 Geocoding can be used to zoom to a particular location Geocoding a Go to location Go to Lat Lon 5 Google Earth overlay data labels boundaries roads and access to time series images can be switched on off Google Earth Labels Show Hide Roads Show Hide Countries Show Hide historical Data Note In case historical Google Earth data are set visible the acquisition date of the image is shown in the bottom information line 6 Transparency slider for any overlay 7 Status information on the validation process number of samples interpreted 8 Panel for land cover validation drop down menu for blind validation yes no selection for plausibility validation D a Navigation through samples previous next sample 10 How to help box LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE
7. 27 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU C o land cover changes Geo ille SOFTWARE MANUAL Viewing photographs and land cover information from the Geo Wiki pictures mobile app http www qgeo wiki org mobile apps o The Geo Wiki pictures app available for iPhone Android and Windows Phone allows photographing landscapes with your smartphone and sharing them through Geo Wiki org using the visualization capacity of Google Earth Photographs are automatically geo referenced and tagged with information such as compass direction the angle of tilt as well as a classification of the land cover type Settings Be 7 o Upload the photos shot vvith the Geo VViki mobile app to Geo VViki org using your uploaded mobile connection or VVi Fi access o To access Geo Wiki pictures with LACOVAL you need to register on Geo Wiki and enter your Geo Wiki ID into the LACOVAL user profile see User Management and Registration e The land cover validation panel on the right is adapted according to specific method for land cover validation Blind validation Plausibility validation user has no information about the classification at user has information about classification at that sample and therefore gives a blind validation the sample and judges the plausibility of the classification with yes or no Select
8. COVER PAGE 42 36 AND LAND COVER CHANGES PROJECT COORDINATION amp TOOL DEVELOPMENT LACOVAL Validation tool for land cover and land cover changes SCIENTIFIC SUPPORT GeoV lle T l J x ON 00 information 5 stems LACOVAL development funded by ESA ESRIN o Note Login is shown through an unique ID not the name of your LACOVAL account in the top right section of the GeoNode window SOFTWARE MANUAL e Language of GeoNode is dependent on the language settings in your browser English recommended or can be set in the bottom line of the GeoNode window Use the GeoNode navigation buttons and the 5back forth buttons of your browser e Data can be uploaded via Upload layers existing data in your account can be viewed with Explore layers e Further help for GeoNode upload functionality is available here http docs geonode org en latest users upload html e Upload layers to GeoNode o Switch to Layers section and go to Upload layers GGG 214 GeoNode HOME LAYERS AP DOCUMENTS EXPLORE LAYERS UPLOAD LAYERS LAYERS cA o Upload your land cover data and validation data sets PEOPLE SEARCH 256 GeoNode HOME LAYERS MAPS DOCUMENTS PEOPLE SEARCH EXPLORE LAYERS N Z sdi UPLOAD LAYERS GeoNode can import GeoTIFF and Shapefile data To import a shapefile first pick its file with the shp extension You will then be prompted to pick the
9. database solution for automatically storing user created samples o Asa first step convert the exported sample file from kml to shp see Annex 3 and save the legend of the actual land cover as a SLD file see Annex 1 using the field containing the land cover from the previous validation o Upload the converted sample as a shapefile to GeoNode using the Upload data function and set a legend using the SLD file or by creating a new style in GeoNode see Annex 2 o Incase you want to release the sample to the public do not apply any permissions to restrict visibility ideally provide a self explaining name such as Sample validated map and accompanying metadata so that other users can search for sample datasets in their target areas o If you want to prepare and use the sample dataset for future augmentation with an additional sampling see Step 2 Generate samples 4 Define Sampling Unit and Design make sure that the point file has a Iccode field short integer with existing land cover classification information o During the next validation you can access the sample through the Additional data box e Click Generate Sample to delete the old sample and create a new one for a new validation run e After finishing your validation work close your browser window or navigate to http lacoval geo wiki org to actively log out from the session LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COV
10. in LACOVAL can be edited through the Create a map function This is only required if you want to view the dataset in LACOVAL which is not mandatory for validation A detailed manual for creating styles for vector file in GeoNode is provided in Annex 2 o Uploaded reference data or sample data do not require any alterations of their representations legends o Note Each layer accessible through the Explore layers tab and with a correct geographic placement in the preview map window can be successfully accessed through the LACOVAL tool Maps for validation Shapefiles with a Iccode attribute field and geotiffs with an integer pixel value can be accessed as maps for subsequent validation LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 46 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TUM land cover changes GeoVille SOFTWARE MANUAL information 9 LACOVAL development funded by ESA ESRIN All layers are available through the Additional data area in the LACOVAL map window after concluding the Generate Sample process f you want to search existing layers uploaded by other users such as sample datasets for your area of interest use the search function of GeoNode to list all datasets matching your search criteria J 21 GeoNode oL o HOME LAYERS MAPS DOCUMENTS PEOPLE SEARCH El t ki Sear
11. tool after the user has specified the desired confidence level normally 95 or 99 and the desired confidence interval normally a number between 3 and 5 These values will then tell the user that the validated data set for example has an overall accuracy of 82 5 at a confidence level of 95 The user can then compare these results with the product specifications and decide about the fitness for purpose of the data set lt should be noted that the results of the validation can be strongly influenced by the knowledge of the validation expert the ambiguity of the land cover classes as well as the quality of the reference data e g geometric shift date The LACOVAL online tool can provide any user with an initial sound impression of the quality of the data but it cannot fully replace a professional independent validation LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 8 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT T land cover changes GeoV lle SOFTVVARE MANUAL 2 3 User management amp registration e Access the LACOVAL open source online tool through the entry page on Geo Wiki http www geo wiki org branches lacoval by clicking on the image LACOVAL Validation tool for land cover and land cover change ALPHA PROTOTYPE or using the direct link to the application http lacoval geo wi
12. 2 4 Step 1 Input data set up in GeoNode 1 Set Up Input Data Upload Data Data upload for LACOVAL is managed through the external open source GeoNode portal All files must be uploaded to and configured in GeoNode in order to make these layers available for LACOVAL e Click on Upload data e Upload is managed through GeoNode http geonode org GeoNode is an independent open source solution for storing and managing geospatial data online GeoNode can be accessed from LACOVAL through o an iframe inside the LACOVAL portal recommended or o In anew browser window under the link http geonode geo wiki org Upload Data x 214 GeoNode SEARCH LAYERS MAPS DOCUMENTS PEOPLE HOME EXPLORE LAYERS z sim dii P LOA D LAY R S Who can view and download this data oNode can import GeoTIFF and Shapefile data To import a sha ay first pick its file with the shp Anyone n You will then be prompted to pick the other component fle Any registered user Tite Only users who can edit Who can edit this data Data Select a Geotiff or Shapefle shp fie n Any registered user SLD Browse Only the following users or groups Select a sid style file optional XML Select a xmi metadata fie ISO Dubin Core FGDC 9 TEE rer AA Abstract Add us GeoNode data upload functionality embedded in LACOVAL upload data frame LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND
13. 35 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT land cover changes Geol file U GEO SOFTVVARE MANUAL stems LACOVAL development funded by ESA ESRIN Layers LISA Ibk Gebaeude IF Limit by scale W Limit by condition Match any of the following add condition add group R Cancel Save Please confirm each editing this might not be visible in the LACOVAL tool on small screens use the browser version instead e NOTE this whole procedure can be avoided if a SLD file is provided with the upload 2 10 Annex 3 Transforming kml to shp files The transformation between the both formats shp amp kml can be done in different software e Online Tool Zonum Solutions Google Earth to Shapefile http www zonums com online kmli2shp php Zonum Solutions KML Toolbox Google Earth to Shapefile 2 Kmizshp New Upload KML KMZ P desktop o 77 Output Coordinate System 4 Kmidtext Pe 4 Kmi2b1 aum KmiColor Projection Lat Lon Zone 12 Zone Northern Hemisphere 4 KmA KmtCircles Shapes to Export 2 Kmizx Original Shapes or Converted Shapes xy2kmi ee l Excel2kml on Points as Paths Inner Polygons Outer Polygons Li Paths as Points Inner Polygons as Lines Poin Outer Polygons as t
14. CT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU rN land cover changes Geo fille SOFTWARE MANUAL un e 5 Define Validation method Generate Sample x Validation Method Validation Method Please choose the validation method Blind Plausibility HowTo previous finish LACOVAL sample generator workflow step 5 of 5 o Choose Validation Method Blind user has no information about the classification at that sample and therefore needs to provide a blind interpretation Plausibility user has information about classification at the sample and judges the plausibility of the thematic classification with yes or no Limitation for LACOVAL online tool functionality available in the commercial LACOVAL RegioCover validation tool offered by GeoVille e No Enhanced Plausbility Method supported o Confirm with Finish and your sample is generated automatically may take several minutes depending on your sample size and input format raster vector After successfully creating all samples an information box appears Note in case of a server time out during sample generation e g due to the wrong definition of land cover codes an error message is shown LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 25 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL V
15. Define Sampling Unit and Design Generate Sample x Sampling Unit and Design Sampling Unit Please choose point or pixel validation Point HowTo Sampling Design Please choose the point sampling method and define the size of the sample Simple random Systematic Number of Samples 0 Augmentation Calculator Determine Sample Size Determine Confidence Interval Confidence Level 95 v Confidence Level 95 v Confidence Interval Sample Size Population Population Sample Size Percentage Calculate Confidence Interval Calculate previous next _ LACOVAL sample generator workflow step 4 of 5 o Choose Sampling Unit Point for categorical vector or raster data Pixel for continuous raster data Limitation for LACOVAL online tool functionality available in the commercial LACOVAL RegioCover validation tool offered by GeoVille e No polygons supported as sampling unit o Chose Sampling Design Simple random point sample samples are placed randomly inside the AOI number of samples must be defined in the field below Systematic point sample samples are placed with a fixed spacing width inside the AOI spacing width must be defined in the field below Augmentation of an existing point sample previously uploaded to GeoNode please select an existing point sample which can be augmented through additional simple random or systema
16. ER PAGE 31 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU A land cover changes Geo fille SOFTWARE MANUAL 2 8 Annex 1 Generate a SLD Styled layer descriptor file e SLDs for GeoNode must fulfil three requirements check with text editor o special characters like a a etc o Featuretypename must be identical to the layer name in GeoNode o Propertyname must be lccode case sensitive 2 8 1 AtlasStyler AtlasStyler is an open source application based on Java that can be used independently to style any vector data The resulting styles can be saved to XML files that follow the OGC SLD SE standard 1 0 Please follow http en geopublishing org AtlasStyler for further information Download Install AtlasStyler o Open the link http en geopublishing org AtlasStyler and scroll down to Start and Install AtlasStyler and click on the green button Start AtlasSiyler stable version e Manual for AtlasStyler o Further information concerning the styling of geodata in AtlasStyler can be found here http en geopublishing org AtlasStyler 20SLD 20Labeling 20 Tutorial in English 2 8 2 Manual for generation of SLD with QGIS e Install and start QGIS 1 8 0 open source Download http hub qgis org prolects quantum gis vviki Dovvnload e Add vector layer file shp format e Double click on loaded file gt Style
17. LACOVAL Validation tool for land cover and land cover changes ESA Contract No 4000106151 12 1 BG Software Manual for LACOVAL open source online tool Date of release 10 07 2013 submitted by GeoVille Information Systems GmbH GeovVille AT Geo ille information Systems and Department of Geodesy and Geoinformation Vienna University of Technology PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU land cover changes Geo fille information 5 SOFTWARE MANUAL Table of Contents 1 LU aaa p a a 3 2 MANUAL FOR LACOVAL ON LINE 52 55 55556 22222 5 2 1 SYSTEM amp INSTALLATION REQUIREMENTS 8 8 88 6 2 2 VALIDATION PRINCIPLE ccc ceases T 2 3 USER MANAGEMENT amp REGISTRATION ccceccecseseeseeeeseeseceueeuueeeeueeeeusaesaeeaueusausaeeneaees 9 2 4 STEP 1 INPUT DATA SET UP IN GEONODE 12 2 5 STEP 2 GENERATE 5 17 2 6 STEP 3 INTERPRET SAMPLES 26 24 STEP 4 GENERATE REPORT cccceccecccceccecceccecerceccecsecercerceccsceseccesacsevcvccecetcersercencerees 29 2 8 ANNEX 1 GENERATE A SLD STYLED
18. LAYER DESCRIPTOR FILE 32 25 52607 ii ii si 32 2 8 2 Manual for generation Of SLD With QGIS 32 2500 120000 a pe b 33 2 9 ANNEX 2 GENERATE STYLES IN GEONODE 34 2 10 ANNEX 3 TRANSFORMING KML TO SHP FILES 36 LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 2 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU land cover changes Geo fille SOFTWARE MANUAL un 1 LACOVAL obiectives Validation is a key requirement for users as vvell as providers of EO derived land cover and land cover change products in order to build trust and to provide potential users with evidence that a specific service yields information products of a known quality usually expressed through the term accuracy By validation we understand the process by which the accuracy of satellite derived land products are evaluated and the associated uncertainties are quantified In fact accuracy assessment or validation is a key component of any project employing spatial data There are a number of reasons why this assessment is so important including For a map user o The requirement to know about the fit for purposeness to use the information resulting from spatial data analysis
19. Land Cover Class Sealed areas Validate Pause thematic plausibility Select correct land cover class at the sample point using the drop down menu uses text information as defined in the Generate Sample wizard Validate Pause R Confirm or reject the thematic Confirm your selection with Validate plausibility of the mapped land cover Zoom to previous next sample with Previous shown as text in the box above by Next random sample ticking the circle under the green checkmark or under the red X If you want to interrupt your validation session click Pause your validation Continue the sample process as session can be continued by chosing described on the left Start continue validation from the left menu and the validation continues with the next unvalidated point from the database LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 28 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU land cover changes Geo fille SOFTWARE MANUAL e After interpreting the last sample an information box appears Finally an accuracy report can be generated xlsx and the sample dataset can be exported kml 2 7 Step 4 Generate report e Click on Generate Report to prepare an accuracy report with standardized accuracy measures A separate tab contains all relevant parameters set for
20. NTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TUM land cover changes Geo fille 4 information SOFTWARE MANUAL Navigate to the uploaded LC dataset for validation Click on the dataset shows you a map window with a quicklook of the uploaded file proper colouring is given in case a SLD vector or colormap raster has been provided and the metadata extracted from the uploaded xml metadata file b S A V 2 R b Edit Layer 7 Download Layer 7 Download Metadata a ltor tesi EA a 3 of tzens gon P kirehen Sh 2 INNSBRUCK o L11 mn a z imi l 494 X o Tiles Courtesy of 9502 z 2 6 info HEAttributes Share ir Ratings 6 Comments MAPS USING THIS LAYER Title LISA VHR LC This layer is not currently used in any maps Abstract REQUIRED A brief narrative summary of the data set Publication Date April 25 2012 midnight CREATE A MAP USING THIS Type Vector Data LAYER Topic Category location GeoNode data viewer o Click on Edit layer and Edit Metadata to modify the data e g name category owner etc as needed Note categories in GeoNode are according to ISO 19115 format and cannot be modified Edit Layer EDIT METADATA gt ED T PERMISSIONS gt REPLACE THIS LAYER gt REMOVE THIS LAYER gt o Incase no SLD shapefile was provided the legend style of a vector dataset for visualization
21. Open OpenStreetiiag dr Mil vA Hall in Tirol background 5 Right click on the layer to be edited and chose Layer styles from the context menu LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 34 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TUM CE land cover changes Geol lle SOFTWARE MANUAL information 9 LACOVAL development funded by ESA ESRIN layers Z 4 Overlays W LISA lbk 54 Zoom to layer extent G l Remove layer q r Layer Properties d Layer Styles d r Layer Info s OpenStreetMap No background e Provide a name for the style under Styles and add specific styles for each class to be drawn under Rules Layers 3 LISA Ibk Styles Choose style Standard Add R 27 Edit Z Duplicate Rules BBB Gebaeude B Strasse G Add Remove Edt 4 Duplicate e Choose Edit to create a representation for a LC class use Add to create a new rule use Remove to delete a rule e Representation can be edited Name fill outline under Basic tab Label under Labels tab assignment of rule to specific classes must be defined as Limit by condition e g LCCode 1 LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE
22. alidation tool for land cover and TOOL DEVELOPMENT TU land cover changes Geo fille SOFTWARE MANUAL 2 6 Step 3 Interpret samples 3 Interpret Samples Start Continue Validation e Click on Start Continue Validation to start the interpretation process After clicking the button the map window zooms to the first sample point use your mouse to zoom and pan through the map interface o Note in case of a sample interpretation in very detailed scales i e close to Google Earth terrain level the map view switches from nadir to oblique This may cause sample points to artificially change their location in the map view Please switch back to nadir view and zoom out in such a case to avoid visual distortions e The land cover data set to be validated is loaded to the map window under Land Cover Data and can be switched on off through the tick box can also be loaded through the drop down menu under Additional Data e Note that all data from GeoNode is provided as WMS service as a rendered PNG image with a predefined raster resolution the more you zoom in the more detail will be shown Click on Start Continue Validation to start the interpretation process LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 26 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT land cover changes Geo il
23. an e mail to the LACOVAL developers lacoval geoville com In all dialogue windows where user input is required a dedicated help box can be opened by clicking How to e The entire validation process is steered through the validation workflow controls on the left Upload data gt Generate Sample gt Start continue validation gt Generate report 1 Set Up Input Data 3 a Upload Data 2 Generate Sample 3 Generate Sample 3 Interpret Samples Start Continue Validation 4 Report Generation 3 E Generate Report Validation menu LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 41 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT land cover changes Geo fille SOFTWARE MANUAL o Fields Start continue validation and Generate Report are deactivated in case no sample has been created yet e Navigation through the data is possible using the bottom left data navigation controls This requires all data sets to be uploaded to GeoNode Upload data and subsequent configuration of the validation session Generate sample in order to make data accessible in the LACOVAL map window e Note If the LACOVAL tool gets frozen or inactive at any time during the validation process try the following to reinitiate the session o refresh your browser F5 or o delete the cache and restart the browser
24. and cover Number of samples un x sampling 20 format Raster geotiff 5 a a seconds seconds min 10 seconds with 1000x1000 pixels Vector shp 4 5 minutes 7 8 minutes gt 20 25 minutes gt 45 60 minutes with 50 000 may time out in case of may time out in case of polygons heavy server load with heavy server load with other users other users The commercial LACOVAL RegioCover validation tool offered by GeoVille does not pose any limitations in terms of performance except the standard constraints of ArcGIS and the corresponding operating system WGS84 EPSG 4326 projection with geographic coordinates required data must be converted appropriately with your GIS software the tool does not provide any reprojection functionality Shapefiles must have a unique code field lccode this attribute field must contain the land cover codes for validation e Case sensitive amp short integer as shown in the below ArcGIS window Add Field m x Short Integer Field Properties land cover code Allow NULL Values Default Value Ceotiff raster codes are retrieved from the pixel value 8bit or 16 bit integer e No float values allowed Por change data change polygons with for the target date to be validated must be provided for point samples to be used in augmentation the prototype requires a lccode field containing the land cover code from the map to be validated this can be done th
25. and map making in subsequent decision making processes For a map producer o The need to knovv hovv vvell map production algorithms are vvorking and to learn from vveaknesses to improve the production chains o ability to quantitatively compare methods for subsequent design decisions While procedures for global medium resolution Earth Observation data based land cover mapping are well established and described transparent documented and reproducible validation approaches for local regional national and supra national land cover products based on very high resolution better than 5m and high resolution 5 to 30m resolution image data are to a large extent non existent In this context LACOVAL has made another important step towards comparable validation of map products at local to supra national scales LACOVAL has developed concepts methods and tools for land cover and land cover change map validation according to the GEO Quality Assurance Framework for Earth Observation QA4EO1 principles of transparency traceability independence accessibility and representativeness The software tools developed in LACOVAL comprise the open source LACOVAL on line tool embedded in the Geo Wiki platform http lacoval geo wiki org which is described in this manual The tool provides an easily accessible solution openly available to the whole EO community in order to perform land cover map validation using basic standardised met
26. ch for All of the words x samplel Exclude vvords from your search All categories Maps only Layers only Users only Metadata Since this date yyyy mm dd Until this date yyyy mm dd s Clear Options GeoNode search function Additional layers available from external VVMSs i e not uploaded to GeoNode can be directly added to the LACOVAL map window as additional reference data for validation e Close Upload data frame in LACOVAL data upon finalization of all data preparation vvork An information box is shovvn explaining that the uploaded data can be vievved either in GeoNode anytime during your LACOVAL session or in the LACOVAL map vvindovv once a validation session has been set up using the Generate Samples function 2 5 Step 2 Generate samples 2 Generate Sample Generate Sample e Click on Generate Sample to open the Sample Generation wizard which consists a set of 5 consecutive specification steps Generate Sample x 1 m 2 3 m 4 NB 5 LACOVAL sample generator workflow e Note The current LACOVAL alpha prototype supports one sample per user stored on the portal If a new sample is generated the old sample will be overwritten Please make sure to export your sample before creating a new one LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 47 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation t
27. data data delivery input data not ok OTT T Data Upload upload data ok i l i For i validation i i i l t Validation validation point by point validation statistic compare with equirement LACOVAL online tool general validation scheme The validation tool assumes that the user of the tool is familiar with the data to be validated i e what is the format of the data what is the name of the data set what are the attributes This should be clarified in the data preparation step which needs to be carried out by the user before starting to use the LACOVAL tool As the LACOVAL is sensitive to attribute names it should be ensured that the data to be controlled reflect these prerequisites LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 7 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU land cover changes Geo fille SOFTWARE MANUAL Once the preparatory steps are done the user can upload his her own data and reference data if available to the LACOVAL tool data upload In a next step the validation the data to be validated is specified and then the number of samples If the user is not sure the minimum number of samples can be determined by the
28. e 2 Sonstige befestigte Fl chen 111 3 Offener Boden 4 Schutt Sand 5 Fels Gestein Ml 6 Wasserfl che 7 Schnee M8 Eis E 9 bestockte Fl che E 10 Geb sch 11 Zwergstrauch E 12 Gr nbevvuchs E 13 Schilf ME 14 Schatten LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 33 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT Fas land cover changes GeoVille SOFTVVARE MANUAL ey stems LACOVAL development funded by ESA ESRIN o Start ArcMap2SLD and set the required parameters ArcGlS map to SLO Converte l l 25 Extras About o Press blue SLD Button to start the generation export of the SLD 2 9 Annex 2 Generate styles in GeoNode e A legend for showing vector files in LACOVAL can be generated using the Create a map function NOTE this is only needed if no SLD is available appropriate coloring for GeoT iff must be created with a colormap before uploading the file to LACOVAL e After selecting the vector layer in GeoNode and clicking Create a map a new map window appears showing the LC dataset as overlay left menu underlying base maps can be freely chosen sie GeoNode Oe HOME LAYERS MAPS DOCUMENTS PEOPLE SEARCH uun ee A Edis Maps i This map B curreniiy uns Sma tammil 4 Gebscude i trasie a Base Mage Anal With Label MapGuwest imagery amp Mapus
29. ethodological support for land cover validation with respect to the application of well documented and accepted validation methods as well as transparent and reproducible sampling designs As such the tools are designed to be open and extendable for the validation of any other land cover product at comparable scale in order to create a credible solution for a broader community It is to be noted that LACOVAL does NOT relief the end user from a thoughtful consideration of any reference material employed for validation Any geometric or thematic errors or mismatches between the reference material and the map will undoubtfully propagate into to the validation result Here any tool is only as good as the data used to feed it The tool therefore does not mitigate inadequacies in existing reference data such as geometric inaccuracies thematic differences outdatedness it does not improve the widespread lack of adequate reference or ground truthing data although it facilitates the inclusion of existing reference data networks it does not investigate the reasons behind any error in a land cover map and it does not trace back deficiencies of production algorithms for land cover change mapping The application of the LACOVAL tools will therefore always require an operator familiar with the fundamentals and principles of land cover validation The best validation approach can simply not work if unsuitable reference data are used or if improper sampling de
30. g in the text field is possible Once defined save the land cover codes and names to an external text file o Fora new validation run fields can be copied from the external text file and pasted to the text field Make sure that you use the identical land cover codes as present in your uploaded land cover map otherwise no samples can be created o Method for categorical data vector or raster Enter land cover code Iccode field or pixel value Enter as divisor Enter text description or number Note for change data the land cover code for the target date shall be provided Categorical data attribute example 1 urban area 2 agriculture area 3 forest area 5 water area 255 NoData Line breaks required after each entry LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 49 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU A land cover changes Geo fille SOFTWARE MANUAL urus o Method for continuous data raster Enter land cover code pixel value values 1 1 relation Enter as divisor Enter number no text allowed in case of continuous data e 1 1 relation use single value for each value Continuous data 1 1 relation attribute example Line breaks required after each entry 1 n relation use grouped values Continuous data 1 n relation attribute example
31. ger hr c chad 2012 Validation Method Categorical Land Cover Plausibility Validation Sampling Design Random Sampling Number of Samples 10 Bounding Box POLYGON 14 5363400149 13 0099838619 14 536 Area of Interest POLYGON 14 5363400149 13 0099838619 14 536 To export and download your sample as a Google Earth kml file please select o Export all Samples to download all created samples regardless if these have been validated or not o Export validated Samples to download all validated samples samples which have been not been validated yet will not be exported Note in case of samples created for validation of continuous data only points are exported not the bounding box as shown in the validation tool o The kml file will be exported with two attribute fields a field containing the land cover from the validated map and another field containing the land cover from the validation will be empty in case unvalidated samples are exported with export all samples o If you want to view your kml sample in GIS use the import functions of your GIS ArcGIS or QGIS can directly import export kmls see Annex 3 for a detailed manual e For making your samples publically available to all LACOVAL users in order to allow this dataset to be found using the GeoNode search function you can upload the point dataset to GeoNode see Step 7 Input data set up The following workaround is needed as Geo Wiki currently does not offer a
32. hods in regional scales and applying online reference data such as Google Earth and user furnished reference data available through WMS technology the LACOVAL ArcGIS off line tool integrated in GeoVilless RegioCover land cover processing chain for utilization of an advanced set of validation methods in commercial activities If you are interested in applying the advanced LACOVAL ArcGIS tool please contact GeoVille at lacoval geoville com 1 The Quality Assurance Framework for Earth Observation QA4EO http ga4eo org background html was established and endorsed by the Committee on Earth Observation Satellites CEOS as a direct response to a call from the Group on Earth Observations GEO LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 3 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU C o land cover changes Geo ille information 5 SOFTWARE MANUAL LACOVAL provides a software framework for assembling the map validation process in one interface including the set up of all necessary input data It guides the operator through the entire validation process it enables the set up of methodologically sound sampling designs and the convenient interpretation of sample in a user friendly environment and it serves to generate state of the art accuracy reports ready for communication to map users The LACOVAL tools offer m
33. ki org for bookmarking e Create a nevv account under Registration enter your name Email address and choose a passvvord Home Log In If you already have an account you can log in here Registration Register Check fields below to make them visible on your public profile First Name Surname Zi Email E Password Confirm Password LACOVAL registration o Note The user is registered under his her Email address on the LACOVAL portal as well as a sequential number which is automatically created for the GeoNode data management component LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 9 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT TOOL DEVELOPMENT U LACOVAL Validation tool for land cover and land cover changes GeoVille SOFTWARE MANUAL nn Remember me next time Log in I ve lost my password After logging in please click link to LACOVAL portal Go to LACOVAL Apolecation L amp COVAL Portal After loading the LACOVAL application and the Google Earth plug in max 10 seconds depending on your system resources and browser settings the GUI looks like this ER LACOVAL Validation tool for land cover and land cover change mx Hello Lacoval User Profile User Getting started 1 Set Up Input Data Upload Data 2 Generate Sample Generate Sample 3 Interpret Samples Star Continue
34. le SOFTWARE MANUAL e The interpretation windows contains the following elements Getting started Download manual Contact developers 1 Set Up Input Data Upload Data 2 Generate Sample Generate Sample 3 Interpret Samples StarvContinue Validation 4 Report Generation s Generale Report Export all Samples Export validated Samples 6 mem Land Cover Data Additional Data Geocoding Google Earth Labels Helo Lacoval o User Profile User 7 Status 1 015 samples Water bodies 8 v x thematic plausibility Pause next random sample 9 LACOVAL sample interpretation window 1 Map window centered on sample point with Google Earth in the background Note If the view is zoomed close the Earth surface the view leaves the nadir and gets tilted This is an automatic behavior of the Google Earth plug in Please zoom out and set the view to nadir again to avoid misinterpretation due to oblique view 2 Land cover data set to be validated can be switched on off v Land Cover Data 1 tiger hr Ic chad 201 3 Any additional data uploaded to GeoNode can be loaded in the map vvindovv v Additional Data GeoNode WMS Geo Wiki Samples Geo Wiki Pictures Panoramio Confluence Points External WMS GeoNode WMS access datasets uploaded to GeoNode Geo Wiki Samples access public Geo Wiki sample point layer Geo Wiki Pictures access your Geo Wiki photographs
35. load this data gt Only users who can edit Note otherwise the file will be visible to all GeoNode users e Who can edit this data gt Only the following users or groups and your user ID e Who can manage and edit this data gt Select your user ID Start upload and edit confirm metadata after successful upload Note file sizes are not limited by GeoNode The larger the file the longer the upload will take approx 5 minutes for 100 MB depending on your internet connection large bandwidth and stable connection highly recommended o Repeat the steps for uploading any kind of additional reference or sample data shp geotiff e Explore layers in GeoNode o Switch to Layers section and go to Explore layers 21 GeoNode GE o HOME LAYERS MAPS DOCUMENTS PEOPLE SEARCH iG masada UPLOAD LAYERS EXPLORE LAYERS Most Recent Less Recent Most Popular Relevance Your selections Clear all Total 18 v CATEGORIES Layer b All Categories f 12 ys 2 hours a Biota 0 No abstract provided e rating amp reese Boundaries 0 Climatology Meteorology Atmosphere 0 Layer Economy 0 e Augmentation Corine Change EZ Es Elevation 0 10 points in Corine change layer with Iccode ing fr z Environment 0 GeoNode data explorer LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 45 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIE
36. mly selected pixels vector outlines are automatically generated by the tool instead of points requires specification of columns rows in the wizard Limitations for LACOVAL online tool functionality available in the commercial LACOVAL RegioCover validation tool offered by GeoVille No stratification is supported with this tool in order to take into account area statistics of individual land cover classes use your GIS No buffering possible e g minimum distances to object boundaries or to other samples No point subsampling within pixels containing continuous land cover values No utilization of masks to facilitate efficient sampling of omission error in change maps No integration augmentation of external polygon sample data sets o Use the Calculator to Determine your sample size based on a given confidence interval usually 5 and confidence level 95 or 99 Determine your confidence interval based on a given sample size percentage probability of making a wrong decision usually 50 and confidence level 95 or 99 Note population size can usually be neglected and left blank in cases where only a little percentage lt 5 of the total number of polygons or pixels is sampled Once you have found an appropriate sample size put the number into the Number of Samples field o Confirm with Next LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 24 36 AND LAND COVER CHANGES PROJE
37. on has no practical sense e g no data clouds Avoid empty line at the bottom of the text editor field o Confirm with Next LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 21 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU C o land cover changes Geo fille SOFTWARE MANUAL nun 3 Define Validation area Generate Sample x Validation Area Area of Interest Bounding Box Draw AO 4 89600 13 71631 x How To previous next aa _ gt NN LACOVAL sample generator workflow step 3 of 5 o Choose the Area of Interest Bounding box of the land cover data set automatically calculated rectangle or Draw your own polygon Draw AO1 in which samples will be placed the extent of the bounding box is indicated Limitation for LACOVAL online tool functionality available in the commercial LACOVAL RegioCover validation tool offered by GeoVille e No AOI definition using irregular polygons from external shapefiles e g administrative boundaries habitats o Confirm with Next LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 22 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU rN land cover changes Geo fille SOFTWARE MANUAL 4
38. ool for land cover and TOOL DEVELOPMENT ral J land cover changes Geo ille SOFTWARE MANUAL Wa 1 Define Land Cover Dataset Generate Sample x Land Cover Dataset Please choose How To Land Cover Please select Land Cover Dataset Dataset Land Cover Type Categorical Land Cover Continuous Land Cover Categorical Change Land Cover LACOVAL sample generator workflow step 1 of 5 o Choose the Land Cover Dataset to be validated from the drop down menu name as defined in GeoNode vector or raster format is automatically recognized only files previously uploaded in GeoNode under your account are available here o Choose the Land Cover Type Categorical land cover if your vector or raster map consists of discrete land cover classes Continuous land cover if your raster map consists of continuous land cover values Categorical change land cover if your vector or raster map consists of discrete change classes o Incase of continuous raster data optionally set the number of pixel columns lines in x direction and pixel rows lines in y direction Ignore the field in case of categorical vector or raster data This option automatically creates vector outlines as overlays to the pixels which will be selected for validation Note Information on pixel columns and rows of the raster dataset can be retrieved from any GIS see example from ArcGIS below or image processing software
39. other component files Title Browse Data select a Geotiff or Shapefile shp file SLD select a 54 style file optional XML select a xmi metadata file ISO Dubin Core FGDC 1 Abstract Who can view and download this data Anyone Any registered user Only users who can edit Who can edit this data Any registered user Only the following users or groups 12 Who can manage and edit this data hd Add user GeoNode upload of data layers Choose a file from your file system shapefile shp or geotiff tif all land cover reference data in ESRI shapefile shp or geotiff tif without external world file format can be uploaded to the GeoNode portal Remarks to the performance of the alpha prototype of the LACOVAL online tool For larger sampling schemes gt 250 samples and due to the architecture of the tool assignment of land cover code to new samples via WMS interface it is recommended to use raster geotiff files LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER AND LAND COVER CHANGES PAGE 43 OF 36 PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT land cover changes GeoVille SOFTWARE MANUAL The following table provides an overview on average processing times for a random point sample for rather large datasets 1 mio pixels for raster data 50 000 polygons for shapefiles L
40. r continuous land cover variables and easy access to online reference data such as Google Earth or user furnished reference data available through WMS technology Registration and usage of the portal is free Use of the prototype tool and its outcomes are under the sole responsibility of the user GeoVille cannot be held liable for any misuse of the system The release as of July 2013 represents the final alpha prototype extensively tested by the consortium partners and ready for testing by an external community LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 5 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU A land cover changes Geo fille SOFTWARE MANUAL Please direct your feedback on the tool its functionalities as well as any observed bugs to Juergen Weichselbaum Project Manager of LACOVAL GeoVille Information Systems GmbH Sparkassenplatz 2 6020 Innsbruck Austria lacoval geoville com LACOVAL development is funded by European Space Agency 2 1 System amp Installation Requirements Google Chrome or Mozilla Firefox browsers are recommended The LACOVAL tool has been successfully tested on Microsoft Windows operating systems with the following browsers Google Chrome Version 25 0 1364 172 m https Awww google com intl en chrome browser Mozilla Firefox Versions 15 amp 19 http Awww mozilla org
41. rough a spatial join in GIS Note It is strongly recommended at this stage to keep a list of the land cover classes for validation in a separate txt file see definition how to define the land cover classes in LACOVAL in the next chapter The alpha prototype version of LACOVAL does not provide direct retrieval of the layer s class codes through a database query as each file is accessed through WMS streaming technology rendered PNG image of the geodata layers LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 44 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TUM land cover changes Geo fille SOFTWARE MANUAL n case you want view your geodata with predefined colouring follow these instructions e For shapefiles specify external SLD file Style Layer Descriptor file legend file to view your dataset with a predefined legend a SLD file can be created through various tools see Annex 1 for detailed manuals otherwise follow Annex 2 for creating styles within GeoNode e For geotiffs a colormap must be embedded before upload no SLD handling possible for raster data Specify XML metadata file SLD must point to identical filename as defined in xml IMPORTANT Check permissions amp security settings in order to keep confidentiality of your data on this open source portal set e Who can view and down
42. s Copy paste your data here or upload a KML KMZ file Related Tools Shp2kmi DigiPoint MapTools E Query Terrain Mapplets Disclaimer 2010 Zonum Solutions QGis 1 8 0 KML files can be open with the add vector layer tool Dateiname kml test file v Keyhole Markup Language KMV Abbrechen ArcGIS 10 1 kml files can be open with the km to layer tool info http resources arcgis com en help main 10 1 index html 00120000004w000000 LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 36 OF 36 AND LAND COVER CHANGES
43. signs are established by an operator LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 4 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU land cover changes Geo fille SOFTWARE MANUAL 2 Manual for LACOVAL On line tool The LACOVAL online tool is an open source solution for land cover and land cover change map validation in regional scales t is accessible as the regional branch of the validation platform Geo Wiki through http www geo wiki org branches lacoval entry page on Geo Wiki or http lacoval geo wiki org direct link to application LACOVAL Validation tool for regional scale land cover and land cover change ison leek Register here Download Data ieoNode portal to define sample designe and to interpret the samples using Google Earth 5 Mobile Apps 9 Try Geo Vriki D eference data available through OGC WMS technology Media ty Quest Supporting projects Related projects Data source Administration Contact Us Smartphone Legends Disclaimer 5 Geo Wiki branches LACOVAL esa Entry page of LACOVAL on Geo Wiki The tool is openly available to the whole EO community tool and provides a set of basic standardised validation procedures point sampling for categorical data pixel interpretation fo
44. sses rows mapped land cover columns plausibility interpretation with number of samples accepted TRUE or rejected FALSE User s accuracy measure of correctness i e percentage of mapped samples per class which are correct at 95 confidence level Bottom line Overall accuracy at 95 confidence level Accuracy report example for continuous raster blind method R 0 954687 R2 0 911427 RMSE 11 00747 a cross plot for continuous landcover Mapped Land Validated Land Cover 88 85 D 0 20 5 zi x 28 20 76 55 o 0 0 m 92 100 83 90 58 96 D 0 0 35 20 56 90 3 15 0 Top section accuracy measures for continuous variables on first sheet of accuracy report Bottom section cross plot with map vs reference values Note that automatic labeling of x axis in the cross plot and representation of points without connecting lines does not work with the current software library please correct these issues manually see corrected example above LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 30 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU land cover changes Geo fille SOFTWARE MANUAL unun parameters used for the validation can be viewed under the Session parameters tab source data sampling unit amp design sampling size interpretation mode Land Cover Dataset ti
45. sses rows mapped land cover columns reference land cover from interpretation with number of samples User s accuracy measure of correctness i e percentage of mapped samples per class which are correct at 95 confidence level Producer s accuracy measure of completeness i e percentage of correct samples that have been mapped at 95 confidence level Bottom lines Overall accuracy at 95 confidence level amp Kappa statistic LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 29 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU land cover changes Geo fille 75 SOFTVVARE MANUAL Accuracy report example for categorical raster plausibility method classification TRUE FALSE rowsum user s acc user s confidence interval NoData 0 0 0 0 0 Forest 0 0 0 0 0 Shrub and Bushland 0 0 0 0 0 Grassland 1 0 1 100 98 Bare soil sand rocks 0 0 0 0 0 Non irrigated cultivated 0 0 0 0 0 Irrigated cultivated 0 0 0 0 0 Urban residential 0 0 0 0 0 Mines and quarries 0 0 0 0 0 Water bodies 11 1 12 91 66667 8 946135 Wetlands 5 2 7 7142857 26 1916 Sparse vegetation 0 0 0 0 0 Burnt areas 0 0 0 0 Clouds 0 0 0 0 0 Shrub and Woodland low 0 0 0 0 0 Shrub and Woodland mec 0 0 0 0 0 Shrub and Woodland high 0 0 0 0 0 column sum 17 3 20 overall accuracy 85 95 9 488809 Top section confusion matrix with land cover cla
46. tic point samples number of samples must be defined in the field above f number of samples is set to 0 zero the existing point sample will be used without creating additional samples f the number of samples is set to a value different from 0 this number of samples will be created in addition to the existing point sample Note the existing point shapefile must have been previously uploaded to GeoNode with a properly defined Iccode field short integer If the point sample has already land cover information from another source e g field LACOVAL OPEN SOURCE VALIDATION TOOL FOR LAND COVER PAGE 23 OF 36 AND LAND COVER CHANGES PROJECT COORDINATION amp SCIENTIFIC SUPPORT LACOVAL Validation tool for land cover and TOOL DEVELOPMENT TU land cover changes Geo fille SOFTWARE MANUAL work the Iccode field must exactly follow the land cover code definition from the map to be validated see section Define Land Cover Classes If the points do not contain any thematic information the Iccode field must be left blank lf you want to make any other thematic reference information visible in LACOVAL it is recommended to configure the point layer with an appropriate legend as an additional reference data set in GeoNode Random selection pixel samples are randomly selected from the continuous raster file number of samples must be defined in the field below e Note for rando
47. validation 4 Report Generation A Generate Report The report can be downloaded as xlsx and is automatically opened in Microsoft Excel if installed on your system Accuracy report example for categorical vector blind method classificat Buildings Sealed ar Open sail Gravel Sa Bock Water Snow ce Trees hrubs Owart shr Grassland Reed Shadow row sum wees acc user 5 confidence interval Buildings 0 Sealed are 1 0 0 0 1 0 0 2 50 0 Open 5041 1 0 0 1 100 38 Gravel Sa 6 6 1 Rock 0 Water 1 0 0 1 100 36 wow a l ize Oo 0 Trees 0 5 1 0 1 g T 7142857 261916 Shrubs 0 i 0 1 1 25 Duearf adhr 0 o Grassland 6 0 E 8 100 Reed 0 0 0 Shadaw 0 0 6 column si 1 1 1 6 1 10 20 producer 100 100 100 83 33333 0 20 0 producer 56 ag bi 58 0 20 00417 58 16 56502 overall ac 50 3555 confi 1131607 kappa 0 70696 Top section confusion matrix with land cover cla
Download Pdf Manuals
Related Search
Related Contents
Consultez la documentation InnobotTM User`s Manual Clinical User Manual Version 4.19 Bedienungsanleitung Leister Diode PID Chief KTG230B flat panel wall mount 取扱説明書 Panasonic S9NKUA Installation Manual Copyright © All rights reserved.
Failed to retrieve file