Simon Willison’s Weblog

Looking for tennis courts on aerial photos. ahathereitis.com shows a map of tennis courts in the Bay Area, identified using computer vision techniques (with OpenCV) applied to satellite photos.

Posted 5th December 2009 at 8:56 am

Recent articles

My Lethal Trifecta talk at the Bay Area AI Security Meetup - 9th August 2025
The surprise deprecation of GPT-4o for ChatGPT consumers - 8th August 2025
GPT-5: Key characteristics, pricing and model card - 7th August 2025

computer-vision 13 opencv 3 satellite 3 tennis 1

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