Title:
【発明の名称】CADにおける輪郭自動追跡方法
Document Type and Number:
Japanese Patent JP2548037
Kind Code:
B2
Abstract:
An automatic contour tracking method for CAD in which a start element is indicated from continuous elements of a drawing on a display, and the tracking direction and the internal turn and the external turn are set, and the continuous elements are sequentially discriminated and selected according to the tracking direction and the internal turn and the external turn on the basis of the start element as the basic point whereby the contour data is obtained automatically, the automatic contour tracking method including finding an angle theta between a final selection element and a candidate element to be chosen next when the next candidate element to be chosen next appears on the final selection element, and selecting one element from among a plurality of candidate elements to be chosen by giving a priority on the element having a smaller angle theta in case the contour tracking is the internal turn, and giving a priority on the element having a larger angle theta in case the contour tracking is the external turn.
Inventors:
NISHIDA SHUJI
KOJIMA AKITOSHI
NAKADA SUSUMU
KOJIMA AKITOSHI
NAKADA SUSUMU
Application Number:
JP15788489A
Publication Date:
October 30, 1996
Filing Date:
June 20, 1989
Export Citation:
Assignee:
MUTOH IND LTD
International Classes:
G06F17/50; G06K11/02; G06T7/60; (IPC1-7): G06T9/20; G06F17/50
Domestic Patent References:
| JP6298474A |
Other References:
電子情報通信学会論文誌Ｖｏｌ．Ｊ７０−Ｄ，Ｎｏ．４，Ｐ．７９７−８０３
Attorney, Agent or Firm:
Nishijima Ayao