Method for evaluating the quality of audio-visual sequences

Details Method for evaluating the quality of audio-visual sequences Method for evaluating the quality of audio-visual sequences

H - Electricity

04

N

H04N 17/00 (2006.01) H04L 1/24 (2006.01)

Patent

CA 2377808

The invention concerns a method for evaluating the quality of audio-visual sequences by: a training comprising the attribution of a subjective rating to each of No training sequences exhibiting degradations identified by a training vector assigned to each sequence according to a first vectoring process, to constitute a database consisting of No training vectors MOi and subjective ratings NSi; classifying the training vectors into k classes of ratings based on the subjective ratings NSi which have been attributed, to form k training sets whereto are attributed k significant ratings; establishing for said audio-visual sequence to be evaluated a vector according to said first vectoring process; attributing to the audio-visual sequence the significant training rating NSRj, corresponding to the closest training set Eaj.

L'invention concerne un procédé d'évaluation de la qualité d'une séquence audiovisuelle, par un apprentissage comprenant l'attribution d'une note subjective à chacune de N o séquences d'apprentissage présentant des dégradations identifiées par un vecteur d'apprentissage qui est affecté à chaque séquence selon un premier procédé de vectorisation, pour constituer une base de données composée des N o vecteurs d'apprentissage MO i et des notes subjectives NS i; le classement des vecteurs d'apprentissage MO i en k classes de notes en fonction des notes subjectives NS i qui leur ont été attribuées, pour former k ensembles d'apprentissage auxquels sont attribués k notes d'apprentissage significatives pour ladite séquence audiovisuelle à évaluer l'élaboration d'un vecteur selon ledit premier procédé de vectorisation; attribution à la séquence audiovisuelle à évaluer de la note d'apprentissage significative NSR j, correspondant à l'ensemble d'apprentissage EAj le plus proche.

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