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Quick Study

simonwillison.net original

Prompt to Claude Opus 5.5 High:

Build an artifact where you open a photo and it rapidly (in a few seconds) paints a version of that photo using a canvas element and simulated paintbrush

See also my previous experiment getting Claude Fable to simulate a watercolor illustration with P5.js.

A simulated oil painting of a photograph of a heron

Quick Study uses Sobel edge detection, with no external libraries beyond Google Fonts.

Posted 23rd October 2026 at 9:35 pm