kornelski/dssim

Health v2 · maintenance only

Adoption not part of the score

1194 stars · 82 forks observed · 2026-09-01

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

DSSIM is a Rust CLI tool and library that measures perceptual (dis)similarity between PNG/JPEG images using a multi-scale variant of the SSIM algorithm in L*a*b* color space. It outputs a difference score (0 = identical) and can generate visual difference maps, and is usable as a library from C, Rust, and WASM.

Use cases

• compare two images for perceptual differences
• benchmark image compression codecs by visual quality
• detect chroma subsampling artifacts in compressed images
• generate a visual difference map between original and modified images
• batch-compare multiple compressed images against an original
• programmatically compute image similarity from Rust or C

When to choose

• you need a perceptual image similarity metric more accurate than plain PSNR or basic SSIM
• you're benchmarking image compression codecs fairly at equal file sizes
• you want a dependency-free, multi-core CLI without OpenCV or MATLAB
• you need alpha channel and color profile aware comparison

When to avoid

• you need scores directly comparable with other SSIM tools (DSSIM values are on its own scale)
• you require a percentage-based difference metric
• your project can't use AGPL-3.0 licensed code

Facets

cli-tool · maturity active

image-processing benchmarking cli image-processing graphics developer-tools windows rust cli ssim image-similarity perceptual-metric image-compression-benchmark lab-color-space c-api wasm linux macos

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