IMAGE GENERATING DEVICE

• Main Authors: NAKASE YOSHIMORI, SAGISHIMA NORIYUKI
• Format: Patent
• Language: English
• Published: 28.05.1999
• Edition: 6
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

PROBLEM TO BE SOLVED: To delete coordinate transformation and luminance calculation by frame by saving polygon information and image by polygon unit and separating image generation into a polygon for which new luminance calculation is performed and a polygon for deforming the saved polygon image at new time. SOLUTION: A coordinate transformation part 11 performs transformation to a view point coordinate system, a three-dimensional image coordinate system by perspective transformation, and finally a screen coordinate system to calculate a polygonal region, which is saved in a polygon information saving part 12. Then, a luminance calculation part 13 calculates, for example, the luminance of each vertex of the polygon based on the distance from a light source and finds the pixels in the polygon by interpolating the luminance of three vertexes. Then, a movement quantity decision part 15 decides whether or not the movement quantity of the polygonal region is within the range of specified movement quantities. Then the movement quantities of all calculated polygons are decided at specific time to update the screen buffer 18 by luminance calculation or image deformation accompanying the update of the polygonal information.