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GEO – SIGMA – Capacity Building Tools for land cover validation and in-situ data collection Steffen Fritz, Myroslava Lesiv,Linda See, Ian McCallum, Juan-Carlos,

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Presentation on theme: "GEO – SIGMA – Capacity Building Tools for land cover validation and in-situ data collection Steffen Fritz, Myroslava Lesiv,Linda See, Ian McCallum, Juan-Carlos,"— Presentation transcript:

1 GEO – SIGMA – Capacity Building Tools for land cover validation and in-situ data collection
Steffen Fritz, Myroslava Lesiv,Linda See, Ian McCallum, Juan-Carlos, Christoph Perger, Dmitry Schepaschenko, Anatoly Shvidenko, Inian Moorthy, Carl Salk, Martina Duerauer, Mathias Karner, Tobias Sturn, Christopher Dresel, Dahlia Domian, Antonia Dunwoody, Olha Danylo, Juan-Carlos Laso Bayas Earth Observations Group Ecosystems Service and Management (ESM)

2 Geo-Wiki Engagement Platform
Geo-Wiki is an open platform that provides citizens with the means to engage in environmental monitoring by providing feedback on existing spatial information overlaid on satellite imagery or by contributing entirely new data. 10,000+ Registered users

3 Geo-Wiki Branches Data Collection Tools Laco-Wiki Pixel Validator
Land Cover Analytical Tools – Visual Interpretation Biomass Agriculture Laco-Wiki Pixel Validator … Livestock Games for Visual Interpretation Picture Pile Cropland Capture SIGMA Cities Risk In-situ Tools Geo-Wiki Pictures FotoQuest GeoODK

4 LACO-WIKI - Land Cover Validation tool

5 Overview Upload Sampling Validation Reporting

6 Logging in / Languages

7 Configurable Validation Sessions

8 Step 1: Data Upload/Management

9

10 ETRS1989 LAEA Support

11

12 Step 2: Generate Samples

13 Step 2: Generate Samples

14 Stratified Vector and Raster Sampling

15

16 Geometry Validation & Comments

17 Accuracy Assessment Raw data / confusion matrix
Possibility to weight confusion matrix by object area Overall accuracy / errors of omission and commission Kappa Average Mutual Information (AMI) Quantitative and Allocation Disagreement (Pontius and Millones, 2011) We can add others as required by the community

18 In-situ component – LACO-Wiki mobile
Based on FotoQuest Austria

19

20 Steps to get to area estimation
Use initial confusion matrix to estimate variance Define overall precision needed for the overall class area Add a second sample (e.g. point sample) and depending on the variance add new sample points needed to reach precision Area estimation when stratification occurs: Legend c = Class of interest h = Stratum given class A= Area p= Proportion/probability n= Sample With Variance and Coefficient of Variation:

21

22

23 Picture Pile

24 Picture Pile Deforestation Pile Pending: Cropland Human Impact
Oil palm identification  New scoring mechanism More reference data based on expert classifications

25 Picture Pile 150+ 80,500+ 11 000 90% Official launch: October 28
???, 2015 Deforestation Pile – 1 week 150+ Players 80,500+ Classifications 11 000 Unique images 90% < 5 seconds Classifications Official launch: October 28 Check it out! Time (s)

26

27 FotoQuest GO

28 FotoQuest Austria Scaling to FotoQuest Europe! 12 weeks 200+ 2000+
July, 2015 September, 2015 200+ Players 2000+ Quests 12,000+ Photos 12% Quests completed Scaling to FotoQuest Europe!

29 Geo-wiki pictures

30 Managing Pictures in fotoquest – link to CIRAD observatory

31 Officially Released September 2014
GeoODK Collect: Officially Released September 2014 Fill out Surveys Edit Surveys Send Survey to DB View Survey on a Map View OFFLINE Layers GPS Location Polygon Feature GPS Trace Offline- Maps-Layers Local Storage

32 Mapping & Offline Layers
Open Street Map MapBox Tiles (.mbtiles) Google KML Local Storage Online/Offline Device Location Functionality

33 Offline Mapping of Data

34 Thanks! Earth Observations Group
Steffen Fritz, Linda See, Ian McCallum, Christoph Perger, Dmitry Schepaschenko, Myroslava Lesiv, Inian Moorthy, Anatoly Shvidenko, Carl Salk, Martina Duerauer, Mathias Karner, Tobias Sturn, Christopher Dresel, Dahlia Domian, Antonia Dunwoody, Olha Danylo, Juan-Carlos Laso Earth Observations Group Ecosystems Service and Management (ESM)

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