Stereoscopy for visual simulation of materials of complex appearance

Ecological Validity of Virtual Reality: Three Use Cases

“…To sum up the general results for that case, the above methodology allowed to show two results. Firstly, the use of stereoscopy decreases perception thresholds of specific properties of the material (size and density of aluminium particles) [7]. Secondly, we have validated that our VR visualization system allows to make a correspondence, for a given visual aspect, between the descriptive metrics of the virtual material to the ones of the real material, through user perceptive studies [6], see Figure 2.…”

“…In order to set up such a workshop, a research project 3 is built on a 4 step methodology : 1) optical measures to characterize the composition of the chosen material samples, 2) light-matter interaction models, 3) Rendering in a VR system, 4) Perceptive validations with the human in the loop by comparing real and virtual samples. The results of this resarch are described, for the case of homogeneous coloured materials in Medina et al's works [20] [19] and as for complex materials (such as car paints with effects) in [7] [6].…”

“…The intent of the author is to present different ways of tackling the question. I will do so by reporting on three studies that were previously done by the author and his colleagues [20][19] [7][6][9] [21] that are at located at 3 different points in the continuum of tasks proposed in the previous paragraph : perception only, perception and action, emotional and/or interaction with other entities.…”