| 摘要 |
The disclosed edge direction detection device detects edges having a high degree of reliability. For each edge direction, a difference total computing means (5) computes, for an indicated rectangular area, a difference total by totaling, for each edge direction, the absolute values of the differences of combination pixels in a combination pixel storage means. A near-center pixel difference calculation means (11) calculates, for the aforementioned each edge direction, the difference between a near-center pixel value and a representative pixel value as the near-center pixel difference value. An edge detection reliability computation means (13) computes an edge detection reliability for each of the aforementioned edge directions on the basis of the aforementioned near-center pixel difference value and the aforementioned difference total value. A determination means (15) determines that the edge detection with the highest edge degree of detection reliability is the edge direction in the aforementioned rectangular region. |
