odin/iris
odin/iris
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Easy, sophisticated image format for a wide range of applications.
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Sky Johnson 73ae1f928a Rate-distortion mode selection for lossy encoder 
Replace SAR-based prediction mode selection with R-D cost in the lossy
path: cost = SSD(quantization error) + λ × L1(quantized coefficients).
Picks modes that minimize actual post-quantization bit cost rather than
raw residual magnitude.
2026-03-27 18:34:56 -05:00
cmd/iris_cli Lossy profile 0x02 with perceptual quantization and multi-scan progressive decode 2026-03-27 15:46:40 -05:00
kodak Add pre-converted PPM files for Kodak benchmark set 2026-03-27 18:02:08 -05:00
pkg Rate-distortion mode selection for lossy encoder 2026-03-27 18:34:56 -05:00
.editorconfig Initial project scaffold for Iris image format 2026-03-26 17:52:57 -05:00
.gitattributes Initial project scaffold for Iris image format 2026-03-26 17:52:57 -05:00
.gitignore Initial project scaffold for Iris image format 2026-03-26 17:52:57 -05:00
CLAUDE.md Initial project scaffold for Iris image format 2026-03-26 17:52:57 -05:00
iris.odin Lossy profile 0x02 with perceptual quantization and multi-scan progressive decode 2026-03-27 15:46:40 -05:00
spec.md Direct coefficient entropy coding for lossy, replacing LZ77 2026-03-27 17:47:31 -05:00