BlomWEB Viewer™ User Manual
Contents
1. ha BLomWE VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a 2 3 5 Searching for an address geocoding Searching for a given site is one of the most common needs for a GIS tool To this end Blom provides two Geocoding tools integrated with the BlomWEB Viewer Search DeCarta OSM Coordinates Type the address fo geocode 0 Figure 11 Geocoding Tool These tools come from external providers and are described here Blom disclaims any responsibility derived from outages poor performance or any other issue related to this service provided by third party organizations OpenStreetMap Geocoder This service is available for any user of the BlomURBEX platform with a valid usertoken OpenStreetMap is licensed under the terms of the Creative Commons Attribution Sharealike 2 0 http creativecommons org licenses by sa 2 0 and is 3 project to provide 8 free source of data and services at the worldwide level OSM based geocoding follows a free text structure see Figure 11 above In some countries the postal addresses may not include numbers and have only street directions To use this geocoding server in BlomWEB Viewer click on the OSM button on top of the geocoding tool Fill in the required info and press Enter or click the arrow button If more than one result exists it will be returned to you Select the desired address from the list and the location will be shown on screen Choose from the optinos2. BLomWEB VIEWER BlomWEB Viewer v1 0 Reference Guide Audience Blom partners clients and developers BELE Blom Document February 2011 BlomWEB Viewer Reference Guide v1 0r1 1a docx Blom ASA Proprietary and Confidential a BLOM 1 ha BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Notices Blom expressly retains all intellectual and other property rights with respect to this document and all matters set forth herein Some technical assertions of capability included herein are estimates based on limited information gathered from past experience The terms conditions specifications and procedures described herein are subject to change in the sole discretion of Blom ASA and its affiliates End User is responsible for requesting and obtaining the latest release of these terms conditions specifications and procedures prior to any purchase or deployment of the products described herein Confidentiality This document and the information contained herein is the proprietary and confidential information of Blom ASA It is provided under contract agreement and may not be reproduced or used for purposes outside the scope of such agreement Trademarks Blom s logo is a registered trademark of Blom ASA in the Kingdom of Norway and other countries Other brands and their products are registered trademarks or trademarks of their respective holders and should be noted as such Copyrig
3. N control is highlighted after clicking on it to provide visual feedback on the current view The arrow control on the right provides the location of the North according to the current view Figure 5 North View Clicking on other views will change the image accordingly Below you can see South View for the same area Note that the S control is now highlighted and the arrow is pointing to the direction of geographical North 11 BLOM IMAGING THE WORLD BLoMWEB De VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a 1 p f Pf Winans LISP 3 h Vds i N e Je p 2 ax IN 0 Figure 6 South View A note on Oblique Images BlomURBEX serves two kinds of oblique images Natural Obliques and Orthorrectified Obliques Natural Obliques are the unmodified oblique images obtained during the capture process Natural Obliques are discontinuous images there is no a mosaic of images as there is with the vertical ones and due to this when you pan them in the map viewer there can appear zones with vertical or horizontal black strips These strips correspond to the area where the oblique image ends BlomWEB Viewer automatically detects if there is another oblique image in the BlomURBEX database that better covers the current center of the screen and if that is the case it will retrieve and show it on screen providing the illusion of continuity in the
4. VIEWER Search DeCarta OSM Coordinates N Lt i 2 os P BLomMWEB O By AN A 5 BLomWEB Copyright 2011 BlomWEB All rights reserved Map data Copyright OpenStreetMap amp contributors CC BY SA Figure 21 Penta View with Ortho and 4 Oblique Views e 3D View Selecting this view will change the view to show the BlomURBEX 3D data for the selected area The BlomURBEX 3D viewer has a different behaviour from the 2D View and is fully described on section 7 of this document 20 rer BLOM BLom WEB IMAGING THE WORLD VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Search 60818 OSM dinates 3 3 i BiomWEB TT O SS Map Quality Sez Figure 22 3D Viewer 3 4 Display of external WMS services The BlomURBEX Javascript API provides a convenient way to connect to external WMS servers and display their data on top of BlomURBEX imagery This API functionality is implemented into BlomWEB Viewer so it is even easier to connect to external servers To connect to an external WMS server from BlomWEB Viewer just click on the WMS button Figure 23 Connect to WMS Server A pop up Window will appear showing a list of pre defined free access WMS servers Select a WMS Server to display on the map Spain Cadastral WMS Server Administrative boundaries in Norway Figure 24 WMS Server Selection Just select one
5. ha BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a 4 7 Erase Button This button will erase all measurement data displayed on screen allowing you to start a new batch of measurements if needed This button will also exit from any Measurement Mode you may be in 31 BLOM IMAGING THE WORLD 1 B Du VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a 5 Annotation tools BlomWEB Viewer allows you to draw vector elements and text on top of the imagery Possible options are Shapes and Text The Annotation tools can be accessed through the annotations button in the top of the screen LES MEN il Figure 38 AnnotationsTools 5 1 Drawing shapes This is the default option From the annotations window you can select e The shape to draw point line or polygon e The colour of the shape EE 2 7 gt 00 OST M Select the features click Draw and pick on the map to Draw the annotations Double click will terminate Lines and Polygons Shape Text Figure 39 Drawing Shapes 5111 Drawing points e Select the desired colour for the points e Click the Draw button to start drawing e Click on the map to draw a point on the selected position e Click on the Stop Drawing button to finish drawing points e Click on the Clear Annotations button to erase all annotations Select the features click Draw and pick on the map to Draw the annotations Double click wi
6. BlomWEB Viewer is a web based application that allows its users to experiment all the features and power of the BlomURBEX and the BlomURBEX 3D geoservers BlomURBEX and BlomURBEX 3D are two online services provided by Blom from several computing centres world wide offering a revolutionary collection of geographical datasets showing urban environments with high definition real images and 3D textured models extracted from at least five different views and accurately geo referenced to fulfill both end consumer expectations and professional engineering requirements As such BlomURBEX and BlomURBEX 3D offer a wide set of APIs GIS Plug ins and SDKs for developers to create high added value applications on a wide range of platforms an technologies on top on the rich and unique geographic content provided by Blom and other contents provided by Blom partners It is convenient tough to have a ready made viewer tool to access and work with the existing geographical contents in BlomURBEX and BlomURBEX 3D without the need of coding or developing it This is where the BlomWEB Viewer plays its role BlomWEB Viewer makes full use of the BlomURBEX Javascript API in order to provide a wide showcase of BlomURBEX capabilities in terms of functionality and available datasets This way BlomWEB Viewer is located on top of the Blom Product Value Chain Applications BlomWEB Viewer BlomDESKTOP Viewer
7. Drawing Shapes Drawing Points Drawing Lines Drawing Polygons Drawing Text menu Drawing texts Additional Tools Year Selection Tool Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 38 Figure 40 Figure 41 Figure 42 Figure 43 Figure 44 Figure 45 Figure 46 Be BLOM BlomWEB Viewer Reference Guide v1 0r1 1a vii ha BLomWEB VIEWER Multiview with different imagery years Oblique Views Selection ccccccccssecceeesseceeeeseceeeeeeees Image Layer Priority Street Layers Overlay selected over Oblique image ne en eee 3D Navigation Pad ccccccesecccsseccesscecesceseeeceseneeeneeeees LOD Selection 00 0000 3D Model Selected in the 16 Texture Replacement External 3D model dropped on the London 3D city model Figure 47 Figure 48 Figure 49 Figure 50 Figure 51 Figure 45 Figure 53 Figure 47 Figure 48 Figure 49 NEB Da BLOM BLOM Pa ps VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a SECTION 1 BlomWEB Viewer Overview Be BLOM ha BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a What is BlomWEB Viewer
8. IMAGING THE WORLD BLoMWEB pen VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a 5 1 2 Drawing text Select the Text option to change the annotations window to text mode In this mode you can select e The text to draw e The colour of the text e The background colour of the text Select the features click Draw and pick on the map to Draw the annotations Double click will terminate Lines and Polygons Shape Text 5 Figure 43 Drawing Text menu 5121 Drawing text e Type the desired text in the text box and select the text and background colours e Click the Draw button to start drawing the text e Click on the map to select the starting position for the text e Repeat the procedure as needed Select the features click Draw and pick on the map to Draw the annotations Double click will terminate Lines and Polygons 0 Shape Text fet Figure 44 Drawing texts 34 Be BLOM ha BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Additional Tools On the top of the screen there is a button to access to an extra set of tools on the available datasets Figure 45 Additional Tools Description Reverse Geocoding tool Show Coordinates tool B Year Selection tool Oblique Selection tool e Image Layer Priority tool Overlays tool Reverse Geocoding tool BlomWEB Viewer allows its users to obtain the address of any point in an image co
9. We will refer to this picture in the following sections to locate controls and functions Search DeCarta OSM Coordinates i ED l e the address to geocode 2 2 1 BLOM ha BLomWEB spd WER BlomWEB Viewer Reference Guide v1 0r1 1a 2 2 BlomWEB Viewer Main Features BlomWEB Viewer is a web based viewer built with the BIomURBEX Javascript API and BlomURBEX 3D API that provides full access to more than 4000 cities in Europe and vector map data for all of Europe As such BlomWEB Viewer features can be summarized as e Navigation capabilities BlomWEB Viewer allows users to search information and navigate through it in several ways e Geocoding tool e Coordinates search e Zoom and pan e Map Locator e Display of ortho and oblique imagery as well as vector map data e Extended visualization capabilities BlomWEB Viewer provides features that enhance the user experience when working with the existing geodata e Dual View and Multi View e Easy connection to external WMS Servers e Street map overlay on Ortho and Oblique imagery e Quick selection of historical imagery e Multiple Oblique views for every point easy to select e Base Layer selection capability e Overlay selection capability e Reverse Geocoding e Identification of coordinates on screen e Measurement toolkit BlomWEB Viewer provides a powerful set of measurement tools that allow users to
10. 27 Annotation Ks nn es ete non bas eds ete dunes de ais Dao een 32 Drawing SNODCS a scssshe cececavvosazveessuneaneveaniauersaecsoevesnsvaraduboaiedeeesswerdsonenrweederitensanndoreaas 32 5 1 5 1 2 BLE EA EE EEE EE ned E OOOO TO 34 Additional TO sssaaa E a Ri ENE Ra 35 61 Re verse Geocoding NN 35 62 Show Coordinates tOO ssis noosten an inae EEA AE E EENE ES 35 005 NTN 36 6 3 1 Year selection 36 6 4 ODlaueSelechHon TOO sisiscsacniccsasecscossansisnsdaiensabosesvecdavatewssesrisouaseiswoessasdvesdsecdunesaantwe 37 38 66 OVETIAY 39 BlomURBEX 3D View 6005 40 7 1 Accesing the BIOMURBEX 3D Viewer 40 7 2 Navigating through the 3D models rrrrvnnrrrnnnnnrrnnnnnnvrnnnnnrrnnnnnrrnnnnenrrnnnesrrrnneeseresseee 41 7 2 1 NEMI aon P 10 EE aE EE EE EE OAE 41 7 2 2 Moyse CONOS EE EEE EE ER 41 7 2 3 Keyboard 9 sie EEE EE EE 41 7 3 Level Of Detail LOD selection sassisisictsnansdsavendcacsanetiecessrnncuabasadacassupbeanbeuabiaesatendeatased 41 VE LE Re 42 7 4 1 Changing textures in the building 43 7 4 2 Adding new buildings ss 43 Be BLOM ha BLomWEB j We WW E Fx E Fe BlomWEB Viewer Reference Guide v1 0r1 1a Table of Figures Blom Products Value CAIN onda saone tante tubes ZOO so REE re Windowed 2 Ortho View to be changed to North View ss Nov UNN Natural Oblique Image Orthorr
11. Blom and allows its integration in different end user application with the use of its API and SDKs The BlomWEB viewer includes direct access to BlomURBEX 3D allowing user to view and navigate through the Blom 3D model repository without the need of using a different viewer application Available data models in BlomURBEX 3D are e BlomURBEX Ortho imagery including overlays e Urban 3D models in four different Levels of Detail LOD e Digital Terrain Models DTMs 7 1 Accesing the BlomURBEX 3D Viewer To change to the 3D view in BlomWEB just select 3D in the view selection control The screen will switch to 3D mode and will show the 3D model centered on the coordinates of the previous center of the screen in 2D mode 3562805 ae De 5 XS map ouan Un been gt Figure 51 3D View 2 Refer to the BlomURBEX 3D Whitepaper for details on the different LODs for Blom3D models 40 BLOM j We WW E Fx E Fe BlomWEB Viewer Reference Guide v1 0r1 1a Navigating through the 3D models To move and rotate the models and the viewing camera you can use the Navigation Pad located in the bottom right part of the screen or use the mouse and keyboard Navigation Pad Use the central arrows to move the models forward backwards left and right Use the leftside up and down arrows to move the camera up and down sky ground Use the arrows located in the
12. Hybrid button remains highlighted to show the screen is on Hybrid Mode Click on it again to return to Image Mode Multiview BlomWEB Viewer allows splitting the screen and showing several simultaneous views of the same area where the views are synchronized This way when you zoom pan on any view all other views redraw accordingly The multiple single view is selected from the control shown below located in the upper right corner of the interface qu Figure 19 View selection control Default view in BlomWEB Viewer is Single View Available views are 19 3 3 BLOM IMAGING THE WORLD 1 B Da VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a e Dual View The Screen is split in two One view is ortho view and the other is North view You can freely change any view to show the desired views Left view can be changed to Map view if needed clicking on the Map button Search DeCarta OSM Coordinates TN ee VIEWER N A H BuomWEB Copyright 2011 BlomWEB All rights reserved Map data Copyright OpenStreetMap amp contributors CC BY SA Figure 20 Dual View screen with Map and North Oblique e Multi View The Screen is split in five showing the ortho view and the four oblique views for the selected area You can freely change any view to show the desired views Central view can be changed to Map view if needed clicking on the Map button Car
13. Services BlomURBEX BlomURBEX 3D e GIS plug ins Data Models Blom3D BlomOBLIQUE BlomORTHO e BlomHISTORICAL Figure 1 Blom Products Value Chain With these assumptions BlomWEB Viewer v1 0 has been designed to cover two needs 1 BLOM ha BLomWEB 2 4 VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a a Provide a simple yet powerful way to showcase BlomURBEX and BlomURBEX 3D features to Blom customers and also be a demoing tool for the Blom Sales Force b Provide a solid basic core for developers to create vertical web applications using the BlomURBEX Javascript API Future versions of BlomWEB Viewer will include additional tools and functionalities and will allow for greater interface customization capabilites What is in this document This document is a reference guide for BlomWEB Viewer It provides a simple but detailed user manual covering all of its features Accessing BlomWEB BlomWEB Viewer is an online application located at the following URL http www blomurbex com Accessing BlomWEB Viewer requires the use of some valid credentials user and password The current version of the tool does not support online creation of credentials so contact your local Sales Support representative to obtain a personal set of BlomWEB Viewer credentials Supported Platforms BlomWEB Viewer runs on any Javascript compatible
14. central base to spin left and right Use the magnifying glasses to zoom in and out Zoom Figure 52 3D Navigation Pad Tilt camera ha BLomWEB 7 2 7 2 1 7 2 2 Mouse controls Use the central mouse wheel to zoom in and out Left click and drag to move the models forward backwards left and right Right click and drag to spin left and right Press Shift and right click and then drag to move the camera up and down Make a double left click to zoom in Make a double right click to zoom out Make a double middle click to point the camera to North 7 2 3 Keyboard controls Use the arrow keys to move the models forward backwards left and right Press shift and the up down arrow keys to tilt the camera up and down Press shift and the right left arrow keys to rotate the camera clockwise Press Ctrl and the right left arrow keys to rotate the camera counterclockwise Press Ctrl and the up down arrow keys to zoom in and out Level of Detail LOD selection Blom3D models are available on 4 different Levels of Detail LOD 1 Block Model These are 3D buildings represented as parallelogram blocks with no information on roofs or additional structures 41 7 3 hun BLomW E B Qa BLOM pa VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a e LOD 2 RoofTop Model This model adds roof structure and other constructions present on the buildings e LOD3 Library Texture Model This is a rooftop LOD2 model t
15. image When panning oblique images you can sometimes experience a displacement in the image and this is due to a new oblique image downloaded to replace the previous one 12 2 3 3 1 Be BLOM IMAGING ha B VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Figure 7 Natural Oblique Image Orthorrectified Obliques are 3 continuous projected mosaic of oblique views This mosaic provides a fluid oblique view from 4 angles north south east and west with the oblique images projected transformed and orthorectified to correct elevation distortion The resulting images show 3 certain degree of distortion that is noticeable at close up zoom levels but with the advantage that they are orthoimages so they can be easily superimposed on other maps and processed continuously making them ideal for use in mobile devices and navigators Figure 8 Orthorrectified Oblique Another very important difference between these two sets of oblique images is that Natural Obliques allow for measurements see section 4 and this is not possible on Orthorectified Obliques BlomWEB Viewer restricts the view of orthorrectified obliques to zoom level 16 or lower to avoid showing the visible distortion on images at closer zoom levels You can visually be aware of the selected oblique set by looking at the Ortho Oblique control on the upper left side of the map When Oblique is highlighted the shown image is
16. of them clicking on the View button to display the data on top of the imagery The button will become highlighted to show that the service is active Hide the WMS Window clicking 21 D Be sion BlomWEB Viewer Reference Guide v1 0r1 1a on the Close button at the top right corner If you want to hide the view of the WMS service open the WMS Window again and click on the View button again The WMS services by BlomWEB Viewer are usually local services that provide information only for the selected country Blom disclaims any responsibility derived from outages poor performance or any other issue related to the service provided by third party organizations Figure 25 WMS Service displayed on top of Blom Ortho If you want to display another WMS service just type its URL and required parameters on the text field including a Name for the service and press the Add button see Figure 24 The servers added will be stored in a cookie so they will be accessible on future sessions on the same computers Select a WMS Server to display on the map e Spain Cadastral WMS Server Administrative boundaries in Norway New Server WMS Example 5 amp LAYER orthc Add Figure 26 Adding a new WMS server The server is added to the list of available servers You can hide its display by clicking on the View button To remove them from the list just click on the Remove button located at the right of every server Note that the
17. the Geocoder returned _ Downing Street Newtown Cambridge Cambridgeshire East of England England 682 3 United Kingdom Downing Street Winson Green Sandwell West Midlands England B66 United Kingdom Downing Street South Normanton CP Bolsover Derbyshire East Midlands England United Kingdom Downing Street Piccadilly Village Manchester Lancashire North West England England M13 9TU United Kingdom Downing Street Ardmore Carter Oklahoma 73401 United States of America Figure 12 OSM Geocoder Results DeCarta Geocoder This service is not available for all users as it is a paid service and involves an extra fee on top of the basic BlomURBEX service The service is based on a licence of the DeCarta worldwide geocoder 15 2 3 5 1 2 3 5 2 Be BLOM ha BLomWEB BlomWEB Viewer Reference Guide v1 0r1 1a http www decarta com and the cartographic database from TeleAtlas This way the use of this geocoding service guarantees uniformity of results all over Europe and perfect location with the vector layers provided by BlomURBEX which are also based on TeleAtlas data see section 3 1 for details DeCarta is a leading company in location based services LBS and has 3 platform Drill Down Server or DDS that offers spatial services for LBS applications including Internet search services The DDS web services are deCarta s implementation of OpenLS an OGC initiative for XML based location servi
18. tool allows activating deactivating the different overlay data available on BlomURBEX The most important use of this tool is to show the TeleAtlas vector data for Europe This data has been rasterized in several towns all over Europe and can be displayed on top of Ortho and Oblique images creating an Hybrid View mode Note that not all cities in BlomURBEX have its corresponding rasterized street layer yet After selecting the tool a list of available layer will appear and you can select unselect them by clicking on the checkbox on the left Layers available by default are e Streets Streets overlay layer for urban areas in Europe e BlomNavigation same layer as shown on the Blom 3D Enhanced Urban Attributes demo scenario e Solar Roofs UK same layer as shown on the BlomURBEX custom layer solar roofs demo scenario e Hill Shade a hill shade layer created from DTM data Only available in some regions and for some users 3 7 NA RENTE Z5 E p E F 0 g gt RE 7 ER 4 ER EA 2 Streets BlomNAVIGATION Solar Roofs UK Hill Shade Figure 50 Street Layers Overlay selected over Oblique image 39 Byen BLOM IMAGING THE WORLD 1 B VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a 7 BlomURBEX 3 View Controls BlomURBEX 3D is an on line platform that streams the photorealistic 3D urban models produced by
19. way are a discontinuous set of images without re projection that cover all of the points of the terrain from four angles north south east west with a resolution between 13 and 18 cm per pixel The way in which the oblique flight is done with several passes over the territory guarantees that for each point of the terrain there may be up to 18 different images because a single point may appear in different oblique images The BlomURBEX platform manages this set of images isolating the end applications from the difficulties inherent in working with them It also provides tools that make it possible to make measurements on the images so that applications can for example calculate the height of buildings right on the images themselves In order to switch to a different view use the view control located on the upper left side of the map viewer In this control O stands for Ortho image i e vertical view and N S E W are the four different orientations for the existing oblique images In the following example there is a vertical image of a city square Note the 0 is highlighted in the View Control 10 BLoMWEB De BLUM IMAGING THE WORLD m VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Figure 4 Ortho View to be changed to North View Clicking on the for North View on the View Control you will directly switch to Natural Oblique North View as seen below Note that the
20. web browser and it is OS independent It has been tested and is supported in Internet Explorer versions 7 to 9 Mozilla Firefox 3 6 and Google Chrome 8 Some exceptions must be considered e BlomURBEX 3D is supported only on Windows based computers e To run BlomURBEX 3D viewer on Google Chrome you need to have Mozilla Firefox installed as some components are shared e BlomWEB Viewer does not support mobile phone web browser as events are not correctly interpreted by the Javascript components on those browsers 1 The same URL was hosting the previous BlomURBEX demo viewer This old viewer has been substituted with the BlomWEB app on Feb 2011 1 1 1 2 1 3 BLOM ha BLomWEB BlomWEB Viewer Reference Guide v1 0r1 1a New features Since the release of the BlomURBEX service in 2008 a demo viewer has been available for accessing the BlomURBEX contents BlomWEB Viewer is an evolution of that demo viewer and version 1 0 has the following new features o New measurement tools o Blom Geocoding direct and inverse 0 Coordinate display and coordinates search o Baselayer control 0 Date selection o Overlay selections 6 Display of vector data Map View o Connection to external WMS servers o Location Map included in the window o Re sizable map screen o Dual and PentaView representation o Launch of 3D viewer directly from the demo viewer Document Organization This document is divided
21. LD de BLoMWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a nee Figure 33 Area Measurement Bearing Measurement This tool lets you measure the bearing or azimuth angle relative to the North of a line Select the tool by clicking on its icon in the toolbar and follow this procedure for bearing calculation Click on a point to start measuring A blue point will appear on screen Move the mouse to draw a line Click again on the map to finish the measurement The bearing of the resultant line in sexagesimal degrees will be displayed on screen dl 5 Figure 34 Bearing Calculation 28 4 3 1 Da BLOM er ET a IMAGING THE WORLD Frp VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Elevation Measurement All images available in BlomURBEX have been processed using a DTM The elevation information of those is included in the server and can be obtained with a simple click with the Elevation Tool Select the tool by clicking on its icon in the toolbar and follow this procedure for elevation calculation 1 Click ona point to start measuring A blue point will appear on screen 2 The Elevation of the point over the sea level will be displayed on screen Figure 35 Elevation Measurement Height Measurement This tool lets you measure the vertical height from a point on the ground on oblique images This effectively lets you measure the height of any
22. OM ha BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Measurement Tools BlomURBEX offers a powerful set of measurement tools that can be directly applied on Ortho and Oblique images providing a great added value for users All of these tools are integrated into the BlomWEB Viewer interface for ease of use and access and are described in this section To display the measurement tools press the measurements button in the top of the screen 1 1 kl Figure 31 Measurement Tools The available measurement tools in BlomWEB Viewer 1 0 are Description Length tool LE Length on the ground tool 1 Area tool i Bearing tool Elevation tool Height tool Diagonal measurement ladder tool Erase button To perform any measurement just click on the desired button BlomWEB Viewer will then enter into Measurement Mode the mouse behaviour will depend on the tool selected To exit Measurement Mode click again on the tool button or click on the Erase Button Note that while a measurement tool is selected you can perform multiple measurements on screen Press the Erase Button to clean the screen if needed Length and Length on the ground measurement This tool lets you perform length measurements on ortho or oblique images The length calculated with the Length on the Ground tool includes the internal DTM data in its calculations so changes in elevation are considered in the results providing accurat
23. This makes that a given point in a city is often covered by more than 10 oblique images per year The Oblique Selection tool allows you to see how many images that cover the current center of the screen in current orientation are there If you click on the All Orientations option the list will display all available oblique images regardless of orientation op 5 di E All orientations Multi Oblique NORTH N 012 575415 55 674648 100712 N 012 575211 55 674507 100726 N 012 575597 55 675922 070611 N 012 575701 55 672298 070611 N 012 580759 55 672405 070611 Figure 48 Oblique Views Selection You can select any Oblique view from the list to display it immediately Note that the naming of the images include the coordinates of the central point and the date of its capture in YYMMDD format Year Month Day 37 Be BLOM ha ua BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Note that this tool is available only if you are seeing Natural Obliques as Orthorrectified Obliques are Ortho images in all senses Imager Layer Priority tool BlomURBEX imagery is composed of Baselayers and Overlays The simplest difference between them is that Overlays have transparency so they can be displayed of top of other layers and Baselayers cannot Due to this Baselayers are given a visualization priority so BlomWEB Viewer will display one layer or another depending on the zoom level This way l
24. a natural oblique see Figure 6 South View otherwise the control would be highlighted as Ortho Map Locator The main map view in BlomWEB Viewer includes a smaller window showing a greater extent of the current view and a red box corresponding to the location of the main view on it This red box will appear flat on Vertical Ortho views and slightly distorted when showing vertical view as it will show the real orientation of the oblique view with relation to the vertical view An arrow appears in the map pointing in the direction where the user is looking at in the main window This Map Locator window can be hidden show by clicking on the icon located on its upper left corner Current version of BlomWEB Viewer does not allow for re locating it on the main viewer 2 3 4 BLOM IMAGING THE WORLD BLomWEB De VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Figure 9 Map Locator Window The Map Locator can be changed to Map View or Image View by clicking on the Map Button located on the Map Locator window The Map button will remain highlighted to indicate it is on Map Mode Press it again to return to Image Mode 1 NER S gt re rat AN tha f wl Vn gt 0 Of gt f 5 Fe M aan WL 6 saco NE Figure 10 Map Locator in Map mode The arrow in the Map Locator Window points in the direction that the viewer is looking at 14 Be BLOM
25. ces on the Internet The DDS web services allow XML applications to be developed quickly and Blom has implemented its geocoding service based on them In this case the service does not allow free text but rather is based on searches formatted with the following structure e Country e Portal Number e Street Name e City Town e Postal Code 6 Province e Not all fields are required with the exception of the Country field BlomWEB Viewer includes an access to this geocoding service to allow our users to experience its power To use this geocoding server in BlomWEB Viewer click on the DeCarta button on top of the geocoding tool The screen will change and the search fields will appear Fill in the required info and press Enter or click the arrow button Note that the Country field is mandatory You need to select a country from the list provided Search Google Ti bi Or trot kp H Li LL f Subdivision M Figure 13 DeCarta Geocoding Interface Contact your local Blom Sales Support representative to acquire an additional access to this geocoding tool in BlomWEB Viewer if needed Google Geocoding BlomWEB also allows you to use the Google Search Engine for geocoding This possibility is included for demoing purposes only as the Google Terms of Service does not allow using it in commercial applications without also linking to their own map data To use this geocoding server in BlomWEB Viewer
26. click on the Google button on top of the geocoding tool Google geocoding is the default option when you enter BlomWEB Viewer Fill in the required info and press Enter or click the arrow button 2 3 5 3 Be BLOM BLOMWE VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a 2 3 6 Searching by coordinates BlomWEB Viewer also allows for a coordinates search The Coordinates search tool is also located in the geocoding section of the user interface Search Google DeCarta OSM lon fat or Sph Mercator X Sph Mercator Y Figure 14 Coordinates Search The text control provides a simple reminder of the format in which coordinates must be introduced You can type the desired coordinates a Asa Longitude Latitude pair in decimal format Example 3 69 40 42 b Asa X Y pair in Spherical Mercator projection Example 225485 2 6250785 5 Once introduced just press Enter or click the Go button to perform the search 2 3 7 Re sizing the screen The map screen in BlomWEB Viewer resizes itself according to the size of the web browser being used This is very useful for projector based presentations where maximizing the image area is desired Remember that you can put most web browsers in full screen mode thus fully maximizing the map area Usually the F11 key is used for this full screen mode Refer to your browser documentation for details Be BLOM ha BLomWEB VIEWER BlomWEB Viewer Re
27. default servers cannot be removed 22 WEE Be BLOM BLOM Bis pou VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Close Select a WMS Server to display on the map e Spain Cadastral WMS Server e Administrative boundaries in Norway New Server Figure 27 WMS Server Added to the list 23 BLOM IM es BLoMWEB Din sen VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Demo Layers BlomWEB Viewer includes an easy way to access different demo datasets included in BlomURBEX These datasets include very high resolution 4cm imagery on certain areas LIDAR demo datasets or access to a BlIomNAVIGATION example Access to these layers can be restricted according to your user credentials Contact your local Blom Sales Support representative for additional details To select and view one of the available demo datasets just click on the Demo Scenarios button E Demo Scenarios Figure 28 Selection of Demo Scenarios pop up Window will open showing the list of available demos according to your user credentials Select a Demo Scenario to Launch BlomURBEX Custom Layer LIDAR BlomURBEX Custom Layer Solar Panels BlomORTHO 4 centimetres Oslo BlomORTHO Historic Data London BlomORTHO 4 centimetres London BlomOBLIQUE Venice BlomOBLIQUE Overlay Street Maps BlomURBEX time comparison L Aquila Blom3D Koblenz Rinmi ANNMADLC Amectardam Figure 29 List of De
28. e measures at ground level The Length tool does not include elevation data so it provides bird s eye length 26 4 4 1 WEB Be BLOM IMAGING THE WORLD VIEWER BLOM BlomWEB Viewer Reference Guide v1 0r1 1a Select the desired length measurement tool by clicking on the appropriate icon in the toolbar and follow this procedure for length calculation 1 Click on a point to start measuring A blue point will appear on screen 2 Move the mouse to paint a line and click on another point to finish the line 3 Continue the procedure to draw additional lines if needed or double click on the map to finish the measurement 4 The cumulative length at every individual line will be displayed on screen Figure 32 Length Measurement Area Measurement This tool lets you perform area measurements on ortho images by drawing irregular polygons on the BlomWEB Viewer screen Select the tool by clicking on its icon in the toolbar and follow this procedure for area calculation 1 Click 3 point to start measuring A blue point will appear on screen Move the mouse to paint a line and click on another point to finish the line Note the polygon is created on the fly so you won t need to close it 3 Continue the procedure to draw additional lines if needed or double click on the map to finish the measurement 4 The area of the resultant polygon will be displayed on screen 27 4 2 BLOM IMAGING THE WOR
29. ectified Map Locator Map Locator in Map NOS EN ae Geocodine TL a de ed eee E E OSM Geocoder RSS a a a ee a DeCarta Geocoding Interface 1 snerssssenessssennnss Coordinates ST a a a ne a cu nant Changing to Map VIN re AE oJ 0 Changing OAM de ph View selection control ss Dual View screen with Map and North Oblique Penta View with Ortho and 4 Oblique Views ADN eis gs ss asic eivieies nis need needs eeeen soa esate Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 BLOM BlomWEB Viewer Reference Guide v1 0r1 1a vi WEB pe VIEWER BLOM ay peus Connect to WMS Server WMS Server Selection WMS Service displayed on top of Blom Ortho Adding a new WMS server WMS Server Added to the list Selection of Demo 5660305 List of Demo Scenarios Demo scenario Lidar Data on the Millenium Dome Measurement Tools c ccscscscscsccececececececececeees Length Measurement Area Measurement Bearing Calculation Elevation Measurement Height Measurement Diagonal Measurement Results AnnotationsTools
30. ent available years for any given city with the use of the Year Selection Tool When you click on the Year Selection Tool the following pop up window will appear fy 2011 2010 2009 2008 2007 2006 2005 2004 Newest set of images between 2011 and 2004 displayed Figure 46 Year Selection Tool The system will show images in the current area for the selected range of years starting on the most recent one If there are no images for the range the screen will appear black The interval can be defined by dragging the two sliders on top of the years Year selection and MultiView Note that this tool can be easily combined with the MultiView feature on the viewer so you can easily display two different views of the same city in different years 36 6 3 6 3 1 BLOM 1 IMAGING THI WORLD VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Search DeCarta OSM Coordinates f 2 VIEWER y Dual f 2004 2005 2006 2007 2008 2009 2010 2011 Images for year 2007 displayed nen BLoMWEB Copyright 2011 BlomWEB All rights reserved Map data Copyright OpenStreetMap amp contributors CC BY SA Figure 47 Multiview with different imagery years 6 4 Oblique Selection tool In order to produce Oblique imagery of urban areas the aircraft capturing the images makes several passes over the cities to ensure capturing the datasets with enough overlap
31. ference Guide v1 0r1 1a 3 Advanced display tools 3 1 Map View In addition to its huge collection of hi resolution georeferenced imagery BlomWEB Viewer has the possibility to show a cartographic view of any area in Europe This map data comes from TeleAtlas vector data and is provided by UbiEst a partner of Blom To change the image view to map view just click on the Map button located in the upper section of the user interface Figure 15 Changing to Map View The Map View will appear on screen centered in the same point that was previously shown on screen Note that the screen view must be on Ortho Mode for the map view to properly appear Figure 16 Map View Also note that the Map button remains highlighted to show the screen is on Map Mode Click on it again to return to Image Mode 3 2 Hybrid view The TeleAtlas vector data for Europe can be displayed on top of Ortho images creating an Hybrid View mode To change the image view to hybrid view just click on the Hybrid button located in the upper section of the user interface 18 BLOM IMAGING THE WORLD H BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a EE Figure 17 Changing to Hybrid View The Hybrid View will appear on screen centered in the same point that was previously shown on screen CES Search DeCarta OSM Coordinates Figure 18 Hybrid View Note that the
32. given facade Select the tool by clicking on its icon in the toolbar and follow this procedure for height calculation 1 Click a point on the ground to start measuring A blue point will appear on screen 2 Move the mouse to draw a vertical line Note that BlomWEB Viewer will only let you move up the Z axis 3 Click again on the map to finish the measurement 4 The height of the resulting line will be displayed on screen 29 4 4 4 5 BLOM IMAGING THE WORLD der BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Figure 36 Height Measurement Diagonal Ladder Measurement This tool calculates the length of the hypotenuse of the triangle formed by a point on the ground and two points in a facade This can be used to have an estimate of the length of the Fire Truck ladder needed to reach a certain window or height in a building Diagonal Measurement tool is only active in Oblique Image mode To perform a measurement a Click on a point located on the ground This will represent the location of the Fire Truck b Move the mouse and click on a point on the ground directly below the desired window or height This will be the corner of the triangle rectangle c Move the mouse up in the facade and click on the desired height The hypotenuse ladder will then be drawn in red and its length will be displayed Figure 37 Diagonal Measurement Results 30 4 6 Be BLOM
33. hts O 2011 Blom ASA gt All Rights Reserved IMAGING THE WORLD hu BLomMWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Revision History h BW RG 1010 Feb 18 2011 Original Document a BLOM ha BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Table of Contents 1 What is BlomWEB 6 2 MN rene dia late 3 1 2 Accessing BlomWEB ere 3 1 7 SN 3 G VNR 4 DN 4 EEG 96400608 19019 440 a ne 4 2 BIomMWEB Viewer Basic Features cscccsssssssssssssssssssssssssssssssssssssescssesensesenseseneesens 6 6 2 2 BIOMWEB Viewer Main Features 9 7 2 3 Navigating through the Map Interface 2D mode 9 2 3 1 Panning LR a a NN 9 2 3 2 ZOOMINE UD ANG TOWN 9 2 3 3 Switching views ortho oblique 10 2 3 4 MP LOC AM OF rv 13 2 3 5 Searching for an address geocoding ss 15 2 3 6 8 17 2 3 7 Re sizing the 50 0 224 100 EE DEEN E ES TEn OESE PEENE NE NAKENT 17 3 Advanced display 100 18 NOV 18 ENN 18 Bo ATTIC a a eee eo O a ee saunas once D de ee D no 19 3 4 Display of external WMS services 21 NNN 24 Measurement TODIS Lae 26 Length and Length on the ground measurement 26 4 1 Be cd 27 DBMS 28 Qa BLOM B omWEB BlomWEB Viewer Reference Guide v1 0r1 1a 29 NNN 29 5 Diagonal Ladder Measurement 30 4 6 O 0 31 09
34. in three sections e Section 1 is this introduction covering an overview of BlomWEB Viewer and its role e Section 2 is the BlomWEB Viewer Reference detailing all of its features and tools and being in fact a simple user manual that can be used for training purposes For more information The Product Roadmap for BlomWEB Viewer detailing the content of future releases of the product is available separately by request as well as the Product Factsheet Contact your local Blom representative for accessing these documents If you want to know more about the BlomURBEX and BlomURBEX 3D features and capabilites please refer to their respective Whitepapers API References and Factsheets 1 4 1 5 1 6 Re BLOM ha BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a SECTION 2 BlomWEB Viewer Reference Guide BLOM IMAGING THE WORLD de BLoMWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a TM ye BlomWEB Viewer Basic Features TM Accessing BlomWEB Viewer As stated in the previous section BlomWEB Viewer is hosted at http www blomurbex com To access the tool you will need to type in your credentials provided to you by 3 Blom Sales Support representative BuomWEB VIEWER Copyright 2011 Blom All rights reserved Map data Copyright OpenStreetMap amp contributors CC BY SA This will lead you to the BlomWEB Viewer main screen displayed below
35. ll terminate Lines and Polygons Shape Text shapetodran 660 D Figure 40 Drawing Points 32 BLOM IMAGING THE WORLD de 1 B VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a 5 1 1 2 Drawing lines e Select the desired colour for the lines e Click the Draw button to start drawing e Click on the map to draw a point on the selected position e Drag the mouse to start drawing a line e Click on the map to draw a vertex and continue drawing the line e Double click on the map or Click on the Stop Drawing button to end drawing the line e Click on the Clear Annotations button to erase all annotations Select the features click Draw and pick on the map to Draw the annotations Double click will terminate Lines and Polygons Shape Text Figure 41 Drawing Lines 5 113 Drawing polygons e Select the desired colour for the polygons e Click the Draw button to start drawing e Click on the map to draw a point on the selected position e Drag the mouse to start drawing a line e Click on the map to draw a vertex and continue drawing lines Note that the polygon will auto complete e Double click on the map or Click on the Stop Drawing button to end drawing the polygon Select the features click Draw and pick on the map to Draw the annotations Double click will terminate Lines and Polygons lt lt Figure 42 Drawing Polygons 33 BLOM
36. mo Scenarios Just click on the name of a scenario to display it on the BlomWEB Viewer screen 24 3 5 Be BLOM ha ua BLomW B VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Figure 30 Demo scenario Lidar Data on the Millenium Dome The list of available demo scenarios is e BlomURBEX Custom Layer LiDAR rasterized image of a LiDAR dataset at the Millenium Dome London e BlomURBEX Custom Layer Solar Panels Rasterised layer showing solar potential of roof panels located at Bournemouth London Green represents areas gt 30m Orange is 25 30m and Red is lt 25m e BlomORTHO 4cm Oslo 4cm Ortho Image of Oslo e BlomORTHO 4cm London 4cm Ortho Image of London e BlomOBLIQUE Venice Oblique imagery of Venice e BlomOBLIQUE Overlay Street Maps Sample of rasterized TeleAtlas maps over Oblique images in Madrid e BlomHISTORICAL L Aquila comparison of different imagery at L Aquila Italy before and after the 2008 earthquake e Blom3D Koblenz Blom 3D model of Koblenz Germany e BlomLANDMARKS Amsterdam Sample of BlomLANDMARKSTM models located at Amsterdam e Blom3D Rostock Ads Example of Advertisement placement over the 3D model of Rostock e Blom3D Munich Enhanced Urban Attributes Example of BlomNAVIGATION model over a section of Munich e Blom3D Rotterdam Blom3D model of the city of Rotterdam Netherlands 25 Be BL
37. o which library textures have been added e LOD4 Photo realistic Texture Model This a rooftop model in which the building textures are extracted from the BLOM oblique images Refer to the Blom3D Product Description for a more detailed description of these LODs In BlomWEBTM Viewer it is possible to select dynamically the LOD to display by clicking on one of the four LOD buttons available Note that the currently selected LOD will be highlighted Figure 53 LOD Selection Edit Mode The BlomURBEX 3D Viewer included in BlomWEB includes an Edit Mode In this mode users can perform different operations on any building such as retrieve information move or delete the building or add new buildings from local 3D models located on his her computer Edits done can be saved on the local machine and can be later delivered to Blom in order to submit changes to the model to the BlomURBEX 3D Server To enter Edit Mode press the E key on your keyboard A toolbox will appear The different available options are Toolicon Action Revert to last saved version ignoring current changes Save into local disk Clean all history To use the Edit Toolbox you need to select a building Double click a building to select it 42 7 4 1 Ra BLUM IMAGING THE WORLD VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Figure 54 3D Model Selected in the Viewer Selected buildings
38. ow resolution layers such as Satellite Imagery can be displayed only at very far zoom levels and high resolution layers such as BlomORTHO layers can be displayed at close zoom levels Baselayer priority is assigned by default but can be changed if needed using the Baselayer Priority tool Selecting the button will display the following window Image Layer Priority BlomOBLIQUE lamORTHO Low res Satellite Figure 49 Image Layer Priority Layers displayed on top of the list will be displayed first if available and layers displayed at the bottom will be displayed last less priority Select a layer and click this button to move it up in the layers list Select a layer and click this button to move it down in the layers list abs Select a layer and click this button to delete it from the layers list It won t be visible any more ES Click this button to add a new layer by typing its name 1 Default layers are e BlomOBLIQUE data layers including 10 15cm vertical and oblique images of urban areas 38 6 5 BLOM IMAGING THE WORLD 1 B De VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a e BlomORTHO national full country vertical images with variable resolution owned by Blom or served under licence agreement of the appropriate vendors 6 Low res satellite Lo Res imagery to serve as reference on far zoom levels 6 6 Overlay Selection tool This
39. perform calculations directly on the images without the need of coding or using external GIS Tools e Length tool e Length on the ground tool e Area tool e Height tool e Bearing tool e Diagonal ladder measurement tool e Elevation tool e 3D Capabilities BlomURBEX 3D Viewer is now integrated in the viewer making it possible to e Display a specific model based on the available geo coding tools e Pan rotate zoom and tilt the camera to visualize the models e Change between the different available LODs for the models e Select the desired level of quality for displaying e Enter editing model to add delete buildings and change add new textures Be BLOM ha BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Future versions of BlomWEB Viewer will include additional features Refer to the BlomWEB Viewer Product Roadmap for additional information The following sections detail all of these features BiomWEB Da BLOM J IMAGING THE WORLI Feng po VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Navigating through the Map Interface 2D mode The main feature of the BlomWEB Viewer is its map screen This map screen allows the BlomWEB Viewer user to navigate through the geographical contents provided by the BlomURBEX geoserver zooming and panning the imagery adding overlays performing measurements and searching and querying for elements and addresses This section covers the ba
40. rresponding to an urban area with a simple click To do this click on the Reverse Geocoding button to activate the function and then click on any point on the map The selected address will be displayed on the button text area The geocoding is provided according to the selected geocoding tool in the upper part of the interface DeCarta OSM See Section O for details If OSM is selected as geocoder and you are clicking on a Point of Interest POI information about it if available in the OSM database will be displayed instead of the address of the point Note that this function works in any available view Map Ortho Oblique or Hybrid Show Coordinates tool BlomWEB Viewer allows its users to obtain the coordinates of any point in an image corresponding with a simple click 35 6 6 1 6 2 Be BLOM ha BLomWEB VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a To do this click on the Show Coordinates button to activate the function and then click on any point on the map The coordinates will be displayed on the button text area in Spherical Mercator projection and Latitude Longitude format Note that this function works on any available view Map Ortho Oblique or Hybrid Year Selection tool As Blom continuously updates the available datasets for the cities in Europe the BlomURBEX geoserver stores all this data providing historical information about them BlomWEB Viewer lets you select the differ
41. sic controls for navigating the map control Panning the map To move the image displayed just right click with the mouse on any point on the map The cursor will change to a cross shape then you can drag the image to the desired location New map areas will be downloaded from the server and shown on screen automatically Zooming up and down BlomURBEX geographic contents are organized in different zoom levels according to the resolution of the imagery For example standard 10cm urban areas are located in zoom level 20 There can be additional levels for higher resolution areas To change the zoom level of the images displayed you can a Use the mouse wheel Move it upwards to zoom in and downwards to zoom out b Use the zoom control on the left side of the map You can click on the or controls to produce a level by level zoom or move the slide for quicker zooming to the desired zoom level Figure 2 Zoom in action c Press the shift key and drag and drop with your mouse to draw a rectangle on screen The map will zoom to the area selected in the rectangle 2 3 2 3 1 2 3 2 BLOM BLomWE B IMAGING THE WORLD VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a OSM Coordinates H fz 5 Figure 3 Windowed zoom 2 3 3 Switching views ortho oblique Blom has the capability to produce oblique georeferenced imagery for the entire territory of Europe Images generated this
42. will be painted in green showing the wireframe mode It is possible to select different polygons in the fa ade to interact with them The selected polygon will be displayed in red Once the building is selected you can delete or move using the tools described above 7 4 1 Changing textures in the building You can select any image file in JPG BMP or TGA mode and drag and drop it on to the selected 3D model The image file will be pasted on the selected facade in red Figure 55 Texture Replacement 7 4 2 Adding new buildings You can drag and drop 3D models to the viewer screen to automatically add them to the model 43 BLOM IMAGING THE WORLD BLomWEB Da VIEWER BlomWEB Viewer Reference Guide v1 0r1 1a Valid formats are OBJ and VRML The models will be represented according to their orientation and georeferency and can be moved using the arrow keys but not rotated Changes will be stored locally and will be lost in later sessions unless they are saved with the Save button Figure 56 External 3D model dropped on the London 3D city model 44
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