In this article, repository, I present a cellular automaton (CA) which evolve according to a set of rules derived from a well known combinatorial structure, the Pascal's Triangle. With only 2 neighbour cells, this probabilistic cellular automaton (PCA) produces point sampling commonly observed in high-quality digital dithering and halftoning techniques.
Feel free to play and share your discoveries :)
Related article to come...
Note: this version already implement int8 vs uint8, or just to fix the Threshold at 127 or to play with threshol modulation and negative values < maybe > the halftone result is uint8
Note: it's not completly discrete since it sample from an random uniform distribution U(0, 1), but.. ;)
#USAGE PCADithering.py <image_path>
#Dithering
python3.9 PCADithering.py IMAGE_PNG/Lion.png 1 255
#Smoothing with temporal dependencies
python3.9 PCADithering.py IMAGE_PNG/Lion.png 2 255
#Smoothing without temporal dependencies ß
python3.9 PCADithering.py IMAGE_PNG/Lion.png 3 255