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1. kodak-pcd0992-statistical-characterization kodak-pcd0992-statistical-characterization Public

   Per-image principal component decomposition and inter-channel redundancy characterization of the Kodak Lossless True Color Image Suite (PCD0992). First published statistical profiling of covariance…

   Python 3

2. kodak-pcd0992-multi-codec-compression-response kodak-pcd0992-multi-codec-compression-response Public

   Codec-independent BPP reduction via upstream RGB covariance reshaping. 46–68% reduction across JPEG, JPEG XL, AVIF, and WebP on the full Kodak PCD0992 suite.

   Python 2

3. kodak-pcd0992-bt601-decorrelation-gap kodak-pcd0992-bt601-decorrelation-gap Public

   Quantifies the gap between BT.601 fixed-transform decorrelation and image-specific KLT optimal decorrelation across the Kodak PCD0992 suite. Measures per-image decorrelation efficiency from 31.5% t…

   Python 1

4. kodak-pcd0992-orthogonal-constraint kodak-pcd0992-orthogonal-constraint Public

   Technical Note: Documents the single-degree-of-freedom constraint on chrominance axis misalignment in the Kodak PCD0992 suite. θ₂–θ₃ correlation of 0.9993 across all 24 images.

5. kodak-pcd0992-geometry-of-misalignment kodak-pcd0992-geometry-of-misalignment Public

   Measures angular misalignment between per-image eigenvectors and BT.601 fixed axes across the Kodak PCD0992 suite. Misalignment accounts for 57.6% of variance in decorrelation efficiency.

   Python

6. kodak-pcd0992-directional-perturbation-compression-response kodak-pcd0992-directional-perturbation-compression-response Public

   Applies directional covariance perturbations to 24 Kodak PCD0992 images and measures geometric displacement and compression response through Facebook’s production JPEG pipeline. 54.5% mean BPP redu…

   Python