| 摘要 |
PROBLEM TO BE SOLVED: To provide a correcting device and method for perspective transformation of document images. SOLUTION: The correcting device comprises: a horizontal vanishing point determining unit for detecting a horizontal vanishing point of the perspective transformed document image; a vertical vanishing point determining unit for detecting a vertical vanishing point of the perspective transformed document image; and a perspective transformation correcting and converting unit for correcting the perspective transformed document image. The horizontal vanishing point determining unit comprises: a direct horizontal line segment detecting unit; an indirect horizontal line segment detecting unit; and a horizontal vanishing point detecting unit. The horizontal vanishing point detecting unit detects a horizontal vanishing point in accordance with a direct horizontal line segment detected by the direct horizontal line segment detecting unit, and an indirect horizontal line segment detected by the indirect horizontal line segment detecting unit. COPYRIGHT: (C)2009,JPO&INPIT |
