Minor release to adjust the Chroma models.
Changed:
- ArtCNN_R8F64_Chroma: Degradation model simplified back to being purely a chroma upscaling model. Compression noise had been previously added to help prevent artifacts with noisy content, but a proper variant aimed entirely at noisy content exists now.
- ArtCNN_R8F64_Chroma_DN: Denoising strength reduced to better preserve fine-details. This new middle-ground offers a better compromise on most tested sources.
The goal is to reduce the amount of redundant options and set clear use-cases. Previously, there wasn't much of a difference between Chroma_DN and the JPEG420 model. The former has been adjusted to be a middle ground between the 2 extremes, so there are 3 distinct levels of denoising strength effectively being offered now.