A NEW EDGE DETECTION DEVICE FOR GRAYSCALE IMAGE

摘要

The present invention relates to an edge detecting device according to the gray-scale still picture, in the prior art, major objects, but is effective for removing the edge component of the noise by using a low-pass filter and then re-detecting the edge through a predetermined ohbel mask, (objects) the edge components even have erased the problem. Thus, the present invention is composed of first and second operators, and two of eight small blocks for detecting the edge in the X, Y- directions, respectively for the two-dimensional image by using a mask with an operator size of having different properties multiscale edge detecting unit 101 and performs an absolute value operation on the edge detection output detected by the multi-scale edge detecting unit 101, select the minimum value with respect to the computed absolute value by performing an add operation and the geometric mean calculated and edge detection performance and the edge position estimation performance at the same time, data fusion unit 102 to satisfy, using the optimal threshold value calculating section 103 for the removal is to remove the noise component untested by the data fusion unit 102, the image within the in a noisy case is one to detect the strong edge in the image that effects.