MediaQ Mobile User Manual - University of Southern California
Contents
1. Preview View Trajectory Upload Export or Delete a video by tapping on one of the videos in the list When you push the upload menu for uploading the recorded video to MediaQ server a pop up window appears to set the privacy level of the video Currently there are three different levels public all MediaQ user can see the uploaded video private only the user who uploaded video can see and group users who are in the same group as the user who uploaded the video can see And the user can add manual keyword s if he wants before uploading the selected video Each keyword does not allow space between words and comma should be used as delimiter in case multiple Keywords are input When the OK button is pushed in the Privacy Level window the actual uploading begins The status of uploading will be shown in the Android notifications window as a progressive bar with the number of bytes When the uploading is successfully done the status bar disappears without any further message However in other cases an error message will appear in the notification window a A gt sl 1 19PM Q Video List 2014_2_24_Videotake_139 3277181475 2014_2_24 Videotake_139 3277485307 Privacy Option Wm d 2014_2 25 Videotake_139 Privac level Ba ve 3363343118 8 y Public 2014 3 26 Videotake 120 Hausa 3447587609 3 2014_2_26_Videotake_139 A 3453171852 Tags e iMac A 2014_2_26_Videotake_139 a 345320 7r i vy i S 2012. 4_2_26_Videotake_139 eon 3453352719 2014_2_26 Videotake_139 3460850467 Figure 5 Video List Figure 6 Privacy Level Group Le Thu Feb 27 2014 ZZ CH 1 25 pm Sprint Clear E ce g Gallery Photos Settings Messages Notifications upload 2408 11306 KB 2014_2_27_Videotake_1393536059764 mp4 e L e Screenshot captured Touch to view your screenshot zal Notifications Quick Settings Figure 7 Uploading Video Stopping an Upload To stop an upload click on Stop Upload in the Collection menu Working with Tasks In the case when a user wants to collect user generated videos in an on demand manner MediaQ supports a spatial crowdsourcing mechanism called GeoCrowd which assigns geospatial tasks to multiple users who are willing to participate in the data collection A task can be issued by a user requester using MediaQ web service to collect media contents at a certain location See MediaQ Web Manual for details Task Inquiries In order to take and be responsible for a task you must post an inquiry Click on Task Inquires select the area about which you would like to inquire and click Post Inquiry In order to select an area grab a corner of the square by pressing and holding it with your finger You will now be able to adjust the dimensions of the square Then when you are assigned to task s they will be listed under Pending Tasks For an automatic notification see Set
3. MediaQ MediaQ Mobile User Manual Feb 2014 Viterbi School of Engineering Table of Contents INTRODUC TION EE 3 REOUIREMEN R KE 4 Ji keeeblCN KE 4 CREATING AN ACCOUNT weescssssssssessesssssesstssessessessucsucsussucsussacsuesaesatsaesstsatsatssussessassassussaesaesnesateateatenteatsstsatestestesneseeaee 4 LOGGING IN 4 MEDIA COLLECTION ME 6 RECORDING VIDEO eebe 6 1 BE 6 STOPPING AN Uptoan n ArrENbNNA AA nEEnannrnnEnnannnrnennnanrnrennnans 8 WORKING WITH ASKS EH 8 E i LL 9 EEN Cal W T lt p ey Sere nen 10 238 Te 11 ABOUT US EEN 11 Introduction MediaQ is a novel online media management system to collect organize share and search mobile multimedia contents using automatically tagged geospatial metadata User generated videos can be uploaded to the MediaQ from users smartphones iPhone and Android and displayed accurately on a map interface according to their automatically sensed geospatial and other metadata MediaQ consists of MediaQ server and mobile app for a smartphone using iPhone or Android OS It allows video uploads from user s smartphone to be automatically geo tagged on a map while also adding its recorded real time and indicating the specific direction a camera was pointed So media contents can be exactly mapped on the map with accurate viewing direction of images Moreover if users are signed up to participate MediaQ allows a requester to send out requests for specific contents that will automatic
4. ally ping participants near an interested location to alert them to get out their phones and start recording The MediaQ system provides the following distinct features 1 Individual frames of videos or any meaningful video segments are automatically annotated by objective metadata which capture four dimensions in the real world the capture time when the camera location and viewing direction where keywords what and people who We term this data W4 metadata which can be obtained by utilizing camera sensors geospatial and computer vision techniques 2 Anew approach of collecting multimedia data from the participating users has been implemented using spatial crowdsourcing which allows media content to be collected in a coordinated manner for a specific purpose 3 Flexible video search features are implemented using W4 metadata such as directional queries for selecting multimedia with a specific viewing direction MediaQ has been developed by the Integrate Media Systems Center at the University of Southern California at Los Angeles CA U S More details about the project can be found at mediag usc edu Requirements MediaQ app is available for both Android and iOS smartphones with a camera to capture videos and sensors to detect geospatial properties such as GPS receiver and digital compass MediaQ app requires Internet connection for normal operation from either cellular network or WiFi network Internet connection is necessar
5. on Note A requestor and a worker should be a different user 10 Ge ZS AH 2 23 pm CH Pending Tasks Take a video of the new fountain RE As the title says 2014 02 26 05 17 16 2014 03 01 05 16 11 Address 3650 McClintock Ave University of Southern California Los Angeles CA 90089 USA Figure 10 Pending Tasks Settings In the Settings menu you can turn on off Background service of the automatic notification from the MediaQ server Without turning on this the user cannot receive the task assignment notifications About Us MediaQ has developed and maintained by the Integrated Media System Center MSC at the University of Southern California Los Angeles California U S For more information or if you have any questions please contact imsc usc edu 11
6. order to record a video click on Collection gt Record from the main menu Click the red record button to start recording Figure 4 shows an example of camera view As a default you can see the captured sensor values on the camera mode screen which might help you in capturing more accurate geospatial metadata by considering the signal strength If it annoys you simply tab the screen then it disappears To finish the recording click the black stop button You will then be able to see a pop up menu showing Preview View Trajectory Upload Export Delete or Cancel Note Acquiring accurate GPS locations is critical in managing media contents in MediaQ However getting accurate GPS signals takes some amount of time Several seconds to tens of seconds depending on surrounding environment after turning on the camera mode for video recording It is recommended to check the location accuracy before recording if possible Indoor button is only working inside specific building we have WiFi fingerprints So do not use it for now PRO E D OT yl SN 1 19 pm 34 019251 log 118 28 kInfo t WIFI state CONNECTED C D re one roaming false fa alse isAvailable true islpv4Connected be o Ze Figure 1 Video Recording Video List To view the videos you have recorded using MediaQ click on Collection gt Video List If videos have not been uploaded yet they will not be marked with a green check mark You can choose to
7. tings for background service fl A D F ll ZW 1 20 ew Q Task Inquiry Post Inquiry er E E ao an w S W 25th St x D o e Fo bh Yo we a E dap W I 2 Te 3g amp S a Er k E Sos 2 o CN 5 dE HI Oo 5 S S 2 gt E W 29th St lt T z Sth W 31st St Ww a A SL fferson Blvd W Zeng PI W A a St Se 20B atb Pl S amp St y th Pl Was P e 7th Dr Exposition Blvd Exposition Blvd California African A American Museum 20A Leighton Ave srowning Blvd S Figueroa St W Martin Luther King Jr Blvd tho gle er St Figure 8 Task Inquiry New task You have 1 task s assigned Figure 9 New Task Pending Tasks To view your assigned pending tasks click on Pending Tasks on the Main Menu Figure 3 If there is any assigned task s you will see the list of tasks By selecting one you can see the details of the task such as task description location issued time deadline of the task To respond and serve for the task the user needs to physically go to the task location and collect requested data i e video or text User can upload the result for the task in two ways After clicking the Respond button one can choose between Record new video and Select from list Clicking Record new video leads to camera mode for video capturing and clicking Select from list leads to Video List explained in the previous secti
8. y for logging into the MediaQ server Due to the potential high cost of transmitting large amounts of video data over cellular network we recommend users to use WiFi network for video uploading Video recording and uploading requires a significant amount of memory space and wireless bandwidth on the phone so it is user s responsibility to use the resources of the phone while using MediaQ This manual is mainly for Android smartphones Especially MediaQ app for Android is working only with Android version 4 Thus older Android phones are not supported User Accounts Only registered users can use MediaQ Currently any user with a valid email address can register The account information can be used for both MediaQ web service and mobile app Creating an Account 1 When the MediaQ app is launched you will see the option to Register in the initial screen as shown in Figure 1 2 After clicking Register enter your username email address and password on the screen seen in Figure 2 Then push the Sign Up button Logging In Once a successful registration is done i e no error message the app shows the initial screen as shown in Figure 1 Enter username and password to log in After successfully logging you will see the main menu as shown in Figure 3 GT 87 12 31 PM Sf 86 12 34 PM Figure 1 Signing In Figure 2 Create Account Logged in as arib Log out Figure 3 Main Menu Media Collection Recording Video In
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