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Best Paper Award at Pacific Graphics 2016 Conference


Georges NADER, Ph.D. student co-advised by researchers from GIPSA-lab, LJK and LIRIS (Lyon), received the Best Paper Award of the 24th Pacific Conference on Computer Graphics and Applications (Pacific Graphics 2016) which was held from 11th to 14th October 2016 in Okinawa, Japan.

In this paper, the authors first introduce an algorithm for estimating the visual contrast on a 3D mesh. They then perform a series of psychophysical experiments to study the effects of contrast sensitivity and contrast discrimination of the human visual system for the task of differentiating between two contrasts on a 3D mesh. The results of these experiments allow to propose a perceptual model that is able to predict whether a change in local contrast on 3D mesh, induced by a local geometric distortion, is visible or not. Finally, they illustrate the utility of the proposed perceptual model in a number of applications: they compute the Just Noticeable Distortion (JND) profile for smooth-shaded 3D meshes and use the model to guide mesh processing algorithms.


Application of the proposed perceptual model to adaptive mesh subdivision - different subdivision levels for different viewing distances.

Georges Nader, Kai Wang, Franck Hétroy-Wheeler, and Florent Dupont. Visual contrast sensitivity and discrimination for 3D meshes and their applications. Computer Graphics Forum (Special Issue of Pacific Graphics 2016), 35(7), 10 pages, 2016.

Pacific Graphics is an annual international conference on computer graphics and applications. As a highly successful conference series, Pacific Graphics provides a premium forum for researchers, developers, practitioners in the Pacific Rim and around the world to present and discuss new problems, solutions, and technologies in computer graphics and related areas.

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