A method and an arrangement for aligning input and output video sequences for video quality measurement

摘要

A method of and an arrangement for aligning input (2) (Y-in; U-in; V-in) and output video sequences (3) (Y-out; U-out; V-out) of a video processing system (1), wherein histograms (4) are obtained representative of the occurrence of a plurality of discrete pixel values of pixels present in both the input and output video sequences (2; 3). Correction curves are obtained by matching the histograms (4) of the input and output video sequences (2; 3). By processing (5) the output video sequence (3) with the correction curves obtained, and comparing the input video sequence (1) and processed output video sequence (6), an objective video quality measure is obtained providing a closer match to a subjectively obtained video quality measure.