| 摘要 |
PURPOSE:To provide the rectangular graphic faithful to the original picture by correcting the distortion from graphic data including the rectangular part. CONSTITUTION:The center of gravity is obtained from the rectangular vector data (S1). The coordinate is converted from the center of gravity and inclination (S2) to the relaive coordinate (S3). The vertex is obtained for each quadrant in the relative coordinate system from among vector data (S4) and the average distance from the center of gravity to each vertex is obtained (S5). The point from which the average distance from the center of gravity and the distance from the center of gravity is shortest is obtained as the reference point and the coordinate of the reference point is corrected (S6) so as to make the distance from the center of gravity to the average distance. Then, the absolute value of the XY coordinates of remaining each vertex except the summit being the same quadrant as the reference point is corrected to the XY coordinates of the reference point (S7). The XY coordinates of each vector data group comprising the rectangular for each area to be separated by a line connecting the center of gravity and corrected each vertex and reference point is corrected according to the vertex or the XY coordinates of the reference point (S8). |
