~/talk

A Magical Gathering

Talkat MountainWest RubyConf 2014 · 2014-03-20..03-21· [ruby, creative-coding]
slides:none on file

A system identifies Magic the Gathering cards using OpenCV for cropping, libpHash perceptual hashes, SQLite sorting and Ruby promises with a thread pool. The corpus covers about 25,000 unique cards; 1.6 GB of images is downloaded and roughly 26,000 hashes are precomputed on four CPUs after releasing the GVL. Capture uses a webcam and lightbox, it learns from manual confirmations, and common failures are slow focus, similar artwork ambiguity, and no integrated pricing yet.

AI-written summary · about

  1. 0:00Introduction
  2. 7:46Hardware
  3. 11:55Promises
  4. 13:33Limit promises
  5. 15:27Perceptual Hatch
  6. 17:27Hash Calculations
  7. 18:52Recognition Cropping
  8. 20:57Preprocessing
  9. 25:02Card Matching
  10. 25:16Saving Cards
  11. 26:20Challenges
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