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1 TSI - Département Traitement du Signal et des Images 2 Thales Communications Colombes 3 TSI TelecomParisTech LTCI - Laboratoire Traitement et Communication de l-Information 4 MMP thales Thales Communications Colombes

Abstract : We propose a full reference visual quality metric to evaluate a semantic coding system which may not preserve exactly the position and-or the shape of objects. The metric is based on Scale-Invariant Feature Transform SIFT points. More specifically, Structural SIMilarity SSIM on windows around the SIFT points measures the compression artifacts SSIM SIFT. Conversely, the standard deviation of the matching distance between the SIFT points measures the geometric distortion GEOMETRIC SIFT. We validate our metric with subjective evaluation and reach a Spearman correlation of 0.86 for SSIM SIFT and 0.74 for GEOMETRIC SIFT.





Autor: Marc Decombas - Frederic Dufaux - Erwann Renan - Beatrice Pesquet-Popescu - Francois Capman -

Fuente: https://hal.archives-ouvertes.fr/



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