Computer graphics processing and selective visual display system – Computer graphics processing – Shape generating
Patent
1997-10-28
2000-08-08
Powell, Mark R.
Computer graphics processing and selective visual display system
Computer graphics processing
Shape generating
345135, 345136, 345428, G06T 1700
Patent
active
061009024
ABSTRACT:
Distortion of normal vectors when approximating shape data with normal vectors is restrained. At step ST1, original polygon date is input. At step ST2, each edge is evaluated for performing removal of an edge. At step ST3, the evaluation values are sorted by magnitude and the edge having the minimum value is selected. At step ST4, the edge having the minimum evaluation value selected at step ST3 is removed. At step ST5, the position of vertices remaining after removal of the edge is decided. At step ST6, a normal vector which has become unnecessary on removal of the edge is removed and the remaining normal vectors are changed. At step ST7, an approximated model is drawn. The processing from steps ST2 to ST6 is repeatedly executed in accordance with a desired precision.
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Horikawa Junji
Totsuka Takashi
Lee Albert K.
Powell Mark R.
Sony Corporation
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