컴퓨터비젼을 이용한 자유곡선의 CAM 시스템에 관한 연구

Abstract

본 연구에서는 자유곡면 상의 특징점 추출을 위하여 실체모형에 인위적으로 격자모형을 만들어 넣어 해결하였다.

A CAM system for NC machining of sculptured surfaces with automatic measurement using stereo vision is proposed and verified by experiments. For feature extraction from the sculptured surface an artificial grid pattern is made on it. A simple stereo algorithm for 3D positioning of object points on a physical model is applied. In order to improve measurement accuracy, an algorithm for subpixel registration is also used. After a depth map of the physical model is calculated by the stereo algorithm, its computational model is obtained through fairing and Ferguson surface fitting method. CL data for NC machining are calculated, and finally, NC part programs are generated. An advantage of this method is to produce easily the sculptured surface.