| 摘要 |
PURPOSE:To easily recognize the boundary line of a travel route at high speed by collating a divided segment to the characteristic point of original picture data. CONSTITUTION:The characteristic point included in original picture data in which the travel route 1 is image-picked up is obtained. Then, straight line group L1-L6 approximated to the array of the characteristic points are obtained and a straight line effective for the discrimination of the boundary lines 2a, 2b, 3a and 3b of the travel route 1 is extracted from the line group. A straight line extracted by the intersected point of the extracted straight lines is divided into plural segments l1a-l1c, l4a-l4c, l7a-l7c andl8a-l8c. Then, the divided segments are collated to the characteristic points of original picture data and the plural divided segments concerned are judged to be equivalent to the boundary lines 2a, 2b, 3a and 3b of the real travel route 1 or not. |
