Title:
【発明の名称】3次元形状データの処理方法
Document Type and Number:
Japanese Patent JP3075023
Kind Code:
B2
Abstract:
A method for processing three-dimensional shape data includes steps of obtaining a plurality of point data along a surface of an object having a three-dimensional shape; taking out a point data from the obtained point data to be processed, approximating each specified number of point data in the to-be-processed point data adjacent the taken-out point data by a polynomial and then finding two unit vectors at the taken-out point data; finding an opening angle defined between the two found unit vectors; comparing the found opening angle with a predetermined threshold value of the opening angle, determining whether or not the found opening angle is not larger than the threshold value, and thinning the taken-out point data when the found opening angle is larger than the threshold value and not storing the taken-out point data in a storage unit, and leaving the taken-out point data without the thinning when the found opening angle is not larger than the threshold value and storing the taken-out point data in the storage unit.
Inventors:
Seiji Hamano
Takao Ichiyanagi
Go Nomura
Hamamura fair
Takao Ichiyanagi
Go Nomura
Hamamura fair
Application Number:
JP18258093A
Publication Date:
August 07, 2000
Filing Date:
July 23, 1993
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G01B11/24; G01C3/06; G06T5/30; (IPC1-7): G01B11/24; G06T17/40
Domestic Patent References:
| JP5164520A | ||||
| JP2230382A | ||||
| JP63147275A | ||||
| JP2118781A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)