Image generation system and program

Details Image generation system and program Image generation system and program

2005-01-25

2005-01-25

Bella, Matthew C. (Department: 2676)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

C345S581000, C345S423000, C345S606000, C463S031000, C382S274000

Reexamination Certificate

active

06847361

ABSTRACT:
The present invention provides an image generation system and program that apply shading for producing a cel animation type of image, with a reduced processing load. Brightness information is set for each pixel of a two-dimensional image that is obtained by perspective transformation of a three-dimensional object, based on brightness information set for that three-dimensional object, the two-dimensional image is divided into a plurality of areas based on the thus-set brightness information, and stepped shading is applied in units of the thus-divided plurality of areas. This brightness information could be set beforehand or it could be calculated in real-time, based on a given condition. The system could also comprise means for determining the pixels to be rendered by comparing the brightness information of each pixel with a given threshold value, then performing adjustment processing on the color information of the pixels to be rendered, based on color information that acts as a reference. This threshold value can be varied in accordance with the number of steps of shading, and adjustment processing can be performed a plurality of times on color information of pixels to be rendered.

REFERENCES:
patent: 5949907 (1999-09-01), Raz
patent: 5966134 (1999-10-01), Arias
patent: 6188408 (2001-02-01), Suzuoki
patent: 6373991 (2002-04-01), Shimazu et al.
Nikkei CG, No. 140, May 1998, Nikkei BP K. K. (Tokyo) “Rinkaku sen no Hinshitsu ga ima hitotsuka Electric Image” p. 129.

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