1.3.0

• linear RGB used to blend background for comparison of transparent images
• Internal API changes

Rust API

• Compatibility with the Rust language
• Improved sRGB gamma precision

1.1.1

• C memory safety bug

Bugfixes

• Fixed scaling of LAB in the C API
• Fixed handling of images smaller than 8 pixels
• RPM, debian packages and meson build

DSSIM output values remain the same since v0.9.

Fast multi-scale measurement

It turns out that being more accurate is also faster.

New API

0.8

Faster, ok-er accuracy

0.4

Re-enabled export of SSIM map

First release

Includes binary for Windows