Module dither 

Perceptual Dithering Algorithms.

Functions

dither_blue_noise

Applies Blue Noise dithering to a frame.

dither_floyd_steinberg

Applies perceptual Floyd-Steinberg dithering to a frame.

dither_ordered

Applies Ordered Dithering (Bayer 8x8) to a frame.

get_blue_noise_offset

Helper to get a deterministic Lab offset for a given coordinate