Auto-Position Detection of Spatial Points Based on Hough Transformation
Chunsen Zhang · Jisuanji gongcheng · 2006
In images measurement and precision of position,the Hough transformation is a general method to extract the edge characters of the image.Based on the Hough transformation,a new automatic detection approach,which is better at the studies on regular grid extraction in spatial cubes and further on spatial coordinate extraction of grid points,is proposed in this paper.By using improved Hough transform,the lines in the image and their parameters can be steadily determined.Point of intersection caused by intersect of two neighboring lines then can be obtained more accurately and with insensitive to noise.The results indicate that the algorithm to calculate the locations of point of intersection given in this paper is valid and mean-root-square error of point of intersection achieves sub-pixel.