Compress

[tfarago]

Summary

This adds post-processing commands for compressing reconstructed image data with reversible tone mapping, quantization, and JPEG 2000 encoding. The prerequisite is the ufo-filters support.

Changes

• Added tofu compress, tofu decompress and tofu denoise.
• Added companders for tanh, arctan, recip_sqrt, and clip tone mapping.
• Added automatic analysis of representative images to estimate center, delta, noise sigma, quantization error, JPEG 2000 RMSE, and full round-trip RMSE.
• Added optional PyQtGraph visualization for the companded image preview and tone-curve inspection.
• Added optional non-local-means denoising support through tofu denoise and compression preprocessing.
• Added image quality helpers for sigma, RMSE, PSNR, and related metrics.
• Added compression, decompression, and denoising CLI/config options.
• Added post-processing documentation with a typical analyze-then-compress workflow.

Disclaimer

Parts of this PR were AI-generated.