freebsd-ports/graphics/dssim/pkg-descr
2021-02-08 20:25:16 +00:00

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This tool computes (dis)similarity between two or more PNG images
using an algorithm approximating human vision.
Comparison is done in L*a*b* color space (D65 white point, sRGB gamma)
using a multi-scale variant of the SSIM algorithm.
Features:
- Improved algorithm
- Compares at multiple weighed resolutions, and scaling is done in
linear-light RGB. It's sensitive to distortions of various sizes
and blends colors correctly to detect e.g. chroma subsampling errors.
- Uses L*a*b* color space for the SSIM algorithm. It measures
brightness and color much better than metrics from average of
RGB channels.
- Supports alpha channel.
- Supports images with color profiles.
- Takes advantage of multi-core CPUs.
- Can be used as a library in C, Rust, and WASM.
- No OpenCV or MATLAB needed.
WWW: https://kornel.ski/dssim