Basics of physically-based rendering

Spectral Domain Decomposition Method for Natural Lighting and Medieval Glass Rendering

“…That is responsible of an irregular volume scattering of light. Traditional physically-based rendering engines [40,21,43] use extrinsic properties of materials, such as spectral reflectances and transmittances. These approaches are not complete enough to efficiently address our problem.…”

Spectral Domain Decomposition Method for Physically-Based Rendering of Royaumont Abbey

“…All these reasons make physically-based rendering a suitable approach if an accurate simulation is to be conducted. Well known rendering methods [35,37] are based on extrinsic properties of materials, i.e., reflectance or transmittance properties only. The research presented in this paper has been done using a multi-spectral physically-based ray-tracing software developed to render the visual appearance of materials and able to do multi-scaled simulations of light interactions.…”

Ray‐tracing domain decomposition methods for real‐time simulation on multi‐core and multi‐processor systems

“…While acoustics computation could be relatively fast, physically based image rendering features a high degree of computational complexity, for instance, to simulate the nuances induced by the photochromic adaptation of glasses. Optical behavior of materials is commonly simulated through their extrinsic spectral reflectance and transmittance properties (for example, ). But to fully render visual properties of materials, we required to handle their fundamental intrinsic characteristics through optical constants.…”

“…In a context of human perception, these geometrical methods, less accurate but much faster, would constitute a better approach for real-time simulation of physics phenomena.While acoustics computation could be relatively fast, physically based image rendering features a high degree of computational complexity, for instance, to simulate the nuances induced by the photochromic adaptation of glasses. Optical behavior of materials is commonly simulated through their extrinsic spectral reflectance and transmittance properties (for example, [16][17][18]). But to fully render visual properties of materials, we required to handle their fundamental intrinsic characteristics through optical constants.Parallel computing allows to significantly reduce the computational time of physically based simulations, although classical parallelization of these algorithms remains inefficient for fulfilling real-time requirement.…”