skvideo.measure.psnr¶

skvideo.measure.psnr(referenceVideoData, distortedVideoData, bitdepth=8)[source]¶

Computes Peak Signal to Noise Ratio (PSNR).

Both video inputs are compared frame-by-frame to obtain T PSNR measurements.

Parameters:

referenceVideoData : ndarray Reference video, ndarray of dimension (T, M, N, C), (T, M, N), (M, N, C), or (M, N), where T is the number of frames, M is the height, N is width, and C is number of channels. distortedVideoData : ndarray Distorted video, ndarray of dimension (T, M, N, C), (T, M, N), (M, N, C), or (M, N), where T is the number of frames, M is the height, N is width, and C is number of channels. bitdepth : int The number of bits each pixel effectively has

Returns:

psnr_array : ndarray The psnr results, ndarray of dimension (T,), where T is the number of frames