Day2-1030-AI-assisted road tracing for OpenStreetMap

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OSM @ Facebook Using AI & Machine Learning to Improve OpenStreetMap

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Product Instagram Places Place Pages Messenger Location Check-In Stories

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Road Coverage %

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Process

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Challenges

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Training Data

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ML Output Mask: Raw Detection

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Post Processing: Threshold + Centerline

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Post Processing: Trim, Connect, Merge

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Post Processing: Remove Island Roads

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Convert into OSM Format

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Roles Editor Validator Submitter

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Human Validation

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Community

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Road Density Import Progress

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Road Density 13 of 79 Provinces 2,263 of 17,574 Tasks 76,434 New Ways 37,685 km’s of road 1,044,820 Nodes Stats from May 2017 Road Density

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Thailand Before/After Before After

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Road Type • Inference from satellite imagery and topology • Studying local OSM edits • OSM Wiki’s • Talking to the community • Population density maps

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Population Density Data used for Tagging

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Crowdsourcing Road Names Red Bird - Kamphaeng Phet 2 Road Kamphaeng Phet 2 Road Matching FB place addresses to road Name candidate extraction

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Quality Analysis • Customized iD Editor • JOSM Validation • OSMCHA • OSMOSE • KeepRight

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Successes • Technology • Improved road geometry quality • Fine tuned overall processes • Community engagement • New Imagery in OSM Challenges • OSM process for imports • Lag time between editing and submission • No local community?

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Example 5

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Drishtie Patel osm@fb.com Would love to hear your thoughts on ways to collaborate and support the community ☺