Simple shading process for Fresnel holograms from computer graphics

Abstract

For practical 3-D computer generated holograms (CGH), it is important to display surface model shaded images like computer graphics (CG). We propose a simple process to obtain 3-D data for CGH from two CG images. The first image is just a shaded CG image. The second image is a depth cued image, i.e. image intensity is modulated by the depth of the object. This process is applicable not only modeled CG images, but also manually drawn images. Experimental results are also reported.