| 摘要 |
PROBLEM TO BE SOLVED: To stably align even a slip original printed in intermediate colors without requiring any timing mark. SOLUTION: Concerning an image processor for performing image processing for mutually correspondently aligning two gradation images of the same type, this device is provided with a mark extracting means 2 for extracting a part to be the mark of alignment from respective two gradation images, a correspondent mark selecting means 7 for selecting the correspondent marks of respective images out of marks extracted by this mark extracting means 2 and a transformation expression calculating means 10 for operating a formula for finding a correspondent coordinate value on one image from a coordinate value on the other image on the basis of a position relation between the marks made correspondent by this correspondent mark selecting means 7. |
