Archive | 2021
Hidden surface removal method using object point based ray tracing in CGH
Abstract
Computer-generated hologram runs into difficulty with multi-perspective rendering because it handles threedimensional images. In this study, we propose a hidden surface removal method that enables continuous motion parallax by ray tracing from a point light source placed on a virtual object to the hologram plane. This method allows us to investigate in detail whether light from a point source reaches each pixel of the hologram plane, which in turn enables the removal of hidden surfaces and shading corresponding to continuous viewpoint movement. Although ray tracing is computationally intensive and takes a long time, NVIDIA’s Turing architecture GPUs, which have computation cores specialized for ray tracing, enable fast calculation.