| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform straight line detection utilizing Hough transformation while considering not only the number of dots but also other characteristics relating to a straight line. <P>SOLUTION: A Hough transforming section 14 performs Hough transformation on contour-emphasized binary image data 104. A Hough table 15 stores therein a summary value after the Hough transformation. A straight line calculation section 161 corrects the summary value. For example, the summary value is corrected by weighting corresponding to a distance from an origin of the straight line. Otherwise, the summary value is corrected by weighting corresponding to tilting of the straight line. On the basis of the corrected summary value, a straight line detection section 16 detects the straight line. <P>COPYRIGHT: (C)2013,JPO&INPIT |
