The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2001
Filed:
Apr. 25, 2000
Junji Horikawa, Tokyo, JP;
Takashi Totsuka, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
Distortion of normal vectors when approximating shape data with normal vectors is restrained. At step ST,original polygon date is input. At step ST,each edge is evaluated for performing removal of an edge. At step ST,the evaluation values are sorted by magnitude and the edge having the minimum value is selected. At step ST,the edge having the minimum evaluation value selected at step ST,is removed. At step ST,the position of vertices remaining after removal of the edge is decided. At step ST,a normal vector which has become unnecessary on removal of the edge is removed and the remaining normal vectors are changed. At step ST,an approximated model is drawn. The processing from steps ST,to ST,is repeatedly executed in accordance with a desired precision.