Just Noticeable Distortion Profile for Flat-Shaded 3D Mesh Surfaces

Georges Nader 1 Kai Wang 2 Franck Hétroy-Wheeler 3 Florent Dupont 1
1 M2DisCo - Geometry Processing and Constrained Optimization
LIRIS - Laboratoire d'InfoRmatique en Image et Systèmes d'information
2 GIPSA-AGPIG - AGPIG
GIPSA-DIS - Département Images et Signal
3 MORPHEO - Capture and Analysis of Shapes in Motion
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
Abstract : It is common that a 3D mesh undergoes some lossy operations (e.g., compression, watermarking and transmission through noisy channels), which can introduce geometric distortions as a change in vertex position. In most cases the end users of 3D meshes are human beings; therefore, it is important to evaluate the visibility of introduced vertex displacement. In this paper we present a model for computing a Just Noticeable Distortion (JND) profile for flat-shaded 3D meshes. The proposed model is based on an experimental study of the properties of the human visual system while observing a flat-shaded 3D mesh surface, in particular the contrast sensitivity function and contrast masking. We first define appropriate local perceptual properties on 3D meshes. We then detail the results of a series of psychophysical experiments where we have measured the threshold needed for a human observer to detect the change in vertex position. These results allow us to compute the JND profile for flat-shaded 3D meshes. The proposed JND model has been evaluated via a subjective experiment, and applied to guide 3D mesh simplification as well as to determine the optimal vertex coordinates quantization level for a 3D model.
Type de document :
Article dans une revue
IEEE Transactions on Visualization and Computer Graphics, Institute of Electrical and Electronics Engineers, 2016, 22 (11), pp.2423-2436. 〈https://www.computer.org/csdl/trans/tg/2016/11/07352354-abs.html〉. 〈10.1109/TVCG.2015.2507578〉
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Dernière modification le : lundi 26 septembre 2016 - 11:39:13

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Georges Nader, Kai Wang, Franck Hétroy-Wheeler, Florent Dupont. Just Noticeable Distortion Profile for Flat-Shaded 3D Mesh Surfaces. IEEE Transactions on Visualization and Computer Graphics, Institute of Electrical and Electronics Engineers, 2016, 22 (11), pp.2423-2436. 〈https://www.computer.org/csdl/trans/tg/2016/11/07352354-abs.html〉. 〈10.1109/TVCG.2015.2507578〉. 〈hal-01242271〉

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