| 摘要 |
An image processing method extracts line segment elements from grayscale captured images, so that line segments are extracted at high-speed without being influenced by contrast ratio, even if morphology processing is used. Selection processing (42) selects an area where continuous line segments possibly exist from the captured image and morphology processing (44) detects line segment elements in the selected area by scanning an operator. Line segments can be extracted in a plurality of directions at high-speed. By means of extraction target area selection processing (46), an area in which the contrast ratio is low, continuing from an area in which the contrast ratio is high in the line segment growth direction, is also extracted as one line segment. |
