Multi-tone printing on TM-T88V, TM-T88VI, TM-T88VII and other thermal receipt printers from Epson

Generate halftone stego images and extract payloads from them.

Experiments with structure-aware, error diffusion dithering algorithms, and other ways to improve beyond Floyd-Steinberg.

Implementing 4 methods of Dithering: Pattern, Error-Diffusion, Random, and Threshold. And the images used are both color and black & white raw files that must be opened via Adobe Photoshop.