Patent ID: 8130274
Filing Date: 2012-03-06
Classification: H04N

Abstract:
1. A video quality objective assessment device comprising a temporal/spatial feature amount derivation unit which derives a temporal/spatial feature amount as a feature amount of deterioration which has occurred in a deteriorated video signal as an assessment target from the deteriorated video signal and a reference video signal as a signal before deterioration of the deteriorated video signal, and a subjective quality estimation unit which estimates a subjective quality concerning the deteriorated video signal by weighting the temporal/spatial feature amount on the basis of a relationship between a deteriorated video obtained in advance and a subjective assessment value obtained by a user, wherein said temporal/spatial feature amount derivation unit includes a) first derivation means for deriving a spatial feature amount in consideration of spatial locality of deterioration which has occurred in an assessment target frame of the deteriorated video signal, b) second derivation means for deriving a temporal feature amount of deterioration which has occurred in an assessment target frame of the deteriorated video signal, and c) third deviation means for deriving the temporal/spatial feature amount in consideration of spatial locality of deterioration which has occurred in the assessment target frame and locality on a time axis by using the spatial feature amount and the temporal feature amount.