Towards Perceptual Quality Evaluation of Dynamic Meshes

Fakhri Torkhani (1) , Kai Wang (1) , Annick Montanvert (1)

1 GIPSA-AGPIG - GIPSA - Architecture, Géométrie, Perception, Images, Gestes

In practical applications, it is common that a 3D mesh undergoes some lossy operations. Since the end users of 3D meshes are often human beings, it is thus important to derive metrics that can faithfully assess the perceptual distortions induced by these operations. Like in the case of image quality assessment, metrics based on mesh geometric distances (e.g. Hausdorff distance and root mean squared error) cannot correctly predict the visual quality degradation. Recently, several perceptually-motivated metrics have been proposed (e.g. mesh structural distortion measure and roughness-based measures). Those perceptual metrics work well on static meshes, but are less efficient on dynamic meshes because they may mistakenly evaluate "natural" deformations as of rather low perceptual quality. Based on the fact that surface movements in a dynamic mesh sequence are often defined as quasi-isometric deformations, we propose a perceptually-driven mesh quality metric that is capable of distinguishing quasi-isometric deformations from the visually unpleasant distortions.

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]; Géométrie algorithmique [cs.CG]; Traitement des images [eess.IV]; Synthèse d'image et réalité virtuelle [cs.GR]; Vision par ordinateur et reconnaissance de formes [cs.CV]; Multimédia [cs.MM]

Fakhri Torkhani, Kai Wang, Annick Montanvert. Towards Perceptual Quality Evaluation of Dynamic Meshes. APGV 2011 - 8th Symposium on Applied Perception in Graphics and Visualization, Aug 2011, Toulouse, France. pp.116. ⟨hal-00628503⟩