Geometric characteristic measuring method of the pattern which is displayed on the crookedness curved surface

摘要

(57) Abstract The manner which at least measures the coordinate of the focus on the curved surface of the body from one which generates at least by one like the camera single two dimensional sensor digital image is disclosed. At least in order the control point on three non same straight lines, at least to generate 3 these non parallel 3 dimensional belts, it is detected between the images. Attitude of the curved surface is measured from the dot where these 3 dimensional belts and on the body of ideal 1 sets correspond. The dot on the body of ideal is converted approaching to 3 dimensional belt in the smallest 2 multiplications. It calculates the other focus on the curved surface, next, with the intersection of the curved surface in the attitude which was measured with description above and 3 dimensional belt control point which is generated from the focus which is detected. The coordinate which was measured in regard to these focuses is used for image geometry fine tuning at the time of CRT measuring.