Building a Stroke Capture System for an AI Drawing Game
The article describes how the author built a system that captures every brush stroke in a drawing game, allowing an AI to provide live commentary as the drawing progresses.
Why it matters
This stroke capture system enables an AI to provide engaging, contextual commentary during the drawing process, which can enhance the user experience and provide valuable training data for AI models.
Key Points
- 1Captured stroke data includes path, color, size, timestamp, duration, and order
- 2Stroke data enables replaying drawings as videos and using them as AI training data
- 3The AI provides real-time commentary on the drawing process, reacting to features as they appear
- 4The stroke capture system is the core engine that powers multiple drawing game products
Details
The author was building a couples drawing game where an AI would provide live commentary as players draw their partners. To enable the AI to react to the drawing process, the author built a system that captures every single brush stroke, including position, timing, pressure, color, and order. This stroke data allows the AI to spot features like eyes, hair, and smiles as they appear on the canvas and provide cheeky, real-time commentary. The stroke capture system also enables replaying drawings as videos, which can be used for shareable content or AI training data. The author has built this core engine once and is using it to power multiple drawing game products, which has been a worthwhile upfront effort.
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