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Dssim
Jul 20, 2023
Image similarity comparison simulating human perception
This tool computes dissimilarity between two or more PNG images using an algorithm approximating human vision.
Comparison is done in Lab* 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 Lab* 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.
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