METHOD FOR DISPLAY OF SHADOW AND COMPUTER-CONTROLLED DISPLAY SYSTEM

摘要

PURPOSE: To use a weighted mean shading coefficient for the interactive image generation by judging which depth map sample shades the rendering pixels after comparing the depth value with every depth map sample and also generating a weighted mean shading coefficient from the result of depth map comparison. CONSTITUTION: A scene is rendered from an observer's viewpoint in a step 608 and a depth map coordinate is generated to index a depth map while rendering the scene through geometric primitive iteration in a step 607. Plural depth map samples which are retrieved by using an iteration depth map index are compared with an iteration depth value while depicting an object in a step 606. A shading coefficient shows to what extent an object dot is shaded from a light source by other objects in the scene in a step 605. These value are stored and a shading coefficient map of the scene is produced in a step 604.