This fork ports features over from my ESRGAN-Bot repository. It natively allows:

• In-memory splitting/merging functionality
• Seamless texture preservation
• Model chaining
• Transparency preservation
• 1-bit transparency support
• Both new-arch and old-arch models

To change the tile size for the split/merge functionality, use the --tile_size argument

To set your textures to seamless, use the --seamless flag

To chain models, simply put one model name after another with a > in between (you can also use + if using bash to avoid issues), such as 1xDeJpeg.pth>4xESRGAN.pth note: To use model chaining, model names must be the complete full name without the path included, and the models must be present in your /models folder. You can still use full model paths to upscale with a single model.

To use 1 bit binary alpha transparency, set the --binary_alpha flag to True. When using --binary_alpha transparency, provide the optional --alpha_threshold to specify the alpha transparency threshold. 1 bit binary transparency is useful when upscaling images that require that the end result has 1 bit transparency, e.g. PSX games.

Examples:

• python esrgan.py 4xBox.pth --seamless
• python esrgan.py 1xSSAntiAlias9x.pth>4xBox.pth --tile_size=800
• python esrgan.py 4xBox.pth --binary_alpha True --alpha_threshold .2
• python esrgan.py /models/4xBox.pth