Module ssim

Structural Similarity index.

The SSIM index is a full reference metric; in other words, the measurement or prediction of image quality is based on an initial uncompressed or distortion-free image as reference. SSIM is designed to improve on traditional methods such as peak signal-to-noise ratio (PSNR) and mean squared error (MSE).

See https://en.wikipedia.org/wiki/Structural_similarity for more details.

Functions

calculate_frame_msssim

Calculates the MSSSIM score between two video frames. Higher is better.

calculate_frame_ssim

Calculates the SSIM score between two video frames. Higher is better.

calculate_video_msssim

Calculates the MSSSIM score between two videos. Higher is better.

calculate_video_ssim

Calculates the SSIM score between two videos. Higher is better.