KEYWORDS: Optical properties, Ray tracing, Cameras, Light sources, Light sources and illumination, Mathematical optimization, Monte Carlo methods, Light scattering, 3D modeling
Currently, for most VR/AR applications it is necessary to reconstruct physically-correctly the real world, and the optical properties of objects. In this paper, to solve this problem, we propose to use a parametric model of optical properties, which is a mix of several known models, which has a small number of parameters and correctly simulates the propagation of light in the scene. In addition, based on the parameters of the model, differential rendering of the image is performed, as a result of which the obtained differentials can be further used in the optimizer. The optimizer, in turn, can modify the model parameters to improve the rendering quality and thus bring the proposed model of optical properties closer to the real optical properties of objects.
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