METHOD FOR QUALITY EVALUATION OF A SEQUENCE OF DIGITAL DECODE DIGITAL IMAGES, ENCODING METHOD, DEVICES AND COMPUTER PROGRAMS

摘要

The invention relates to a method for evaluating the quality of a sequence of decoded images, comprising the following steps, for a group of N decoded images: Calculation of first factors (FP1) of distortion perceptibility according to local characteristics of the original sequence; Obtaining N spatial distortion maps (CDS); Obtaining N time distortion maps (CDT); Obtaining N perceptual spatiotemporal distortion maps (CDSTP) by summation of spatial and temporal distortion maps, weighted using the first factors; Calculating second factors (FP2) of distortion perceptibility as a function of overall characteristics of spatiotemporal distortion maps; Obtain N per-block distortion maps (CDP) by weighting spatiotemporal distortion maps using the second factors.