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Fast SSIMULACRA2 Implementation in Zig

a day ago
https://github.com/gianni-rosato/fssimu2
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  • #Zig
  • #SSIMULACRA2
  • #Performance
  • Fast SSIMULACRA2 derivative implementation in Zig, named fssimu2.
  • Supports sRGB PNG, PAM, JPEG, WebP, or AVIF input formats.
  • Performance tested on Intel Core i7 13700k, showing up to 23% faster and ~40% less memory usage compared to reference implementation.
  • Includes options for JSON output and error map saving.
  • Conformance to reference SSIMULACRA2 tested with validate.py, showing high correlation (PCC: 0.999700).
  • Compilation requires Zig (version 0.15.1), libjpeg-turbo, libwebp, and libavif.
  • Provides a C-compatible ABI with ssimu2.h include file for SSIMULACRA2 score computation.
  • Example C program provided in c_abi_example/ directory.
  • Project is under Apache 2.0 license, with third-party code from libspng, libminiz, and vapoursynth-zip.
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