Patent ID: 7102667

Claim:
A picture quality diagnostic apparatus comprising: means for generating a human vision model response from a test input video signal further comprising; a) means for generating a perceptual difference map for the test input video based on a human vision perceptual model; b) means for generating an attention importance map for the test input video based on a human attention model and an input from the perceptual difference map generating means; c) means for multiplying the perceptual difference map with the attention importance map to produce a first subjective map; and d) means for selecting between the perceptual difference map, the attention importance map and the first subjective map as the human vision model response; means for producing an objectively filtered subjective map from the human vision model response and the test input video signal for different impairment types; and means for determining from the objectively filtered subjective map an impairment analysis to give respective proportions of the different impairment types.