Research

30th November 2017 at 2:00 PM

Speaker: Kai Wang, researcher at CNRSGIPSA lab, Grenoble, France.

Abstract: We will present our work on the computation of a just noticeable distortion (JND) profile on 3D meshes and some relevant applications. The fundamental question is as follows: When we move a vertex of a triangle mesh in the 3D space, how much displacement can be tolerated before the modification can be perceived by a human observer? We develop a so-called bottom-up approach in order to answer this question. This approach relies on a series of psychophysical experiments which allow us to study some important properties of the human visual system, such as the contrast sensitivity and the visual masking effect. We also show the utility of the JND profile and the underlying perceptual models in practical mesh processing applications including simplification and subdivision.

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