What is the HSY color space?

Inspired by the HSV and HSL color spaces and optimized for speed on embedded systems.

HSY color space

Why to code the Hue on 360° (9 bits) and so use a 16 bits word when you can code it on 256 values (8 bits)?

For computing saturation, we are using the HSV equation, faster to compute than the HSL one: S = (Max(R,G,B) - min(R,G,B)) / Max(R,G,B).

Finally, both Value and Lightness are not satisfying compared to a true luminance (they don’t use all three RGB components for their computation), so let’s use Y component since it is native from the camera.

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