| 摘要 |
PROBLEM TO BE SOLVED: To further improve image quality by enabling required correction, even for a dot for which the correction as a contour line is not nuded is discriminated. SOLUTION: Image data expanded in the form of bit map are extracted through a window 73 and for the attention dot at its center, the form of line segment at the border part of black and white dot areas is recognized by a pattern-recognition part 74 and replaced with the code information of plural bits. While utilizing that code information, it is discriminated whether the dot requires correction or not and concerning the correction required dot, the correction is performed by reading the correction data corresponding to this code information out of a memory block 75. In the image data expanded in the form of bit map, an edge-discriminating means 78 discriminates whether each black dot is a right end dot, a left end dot, an isolated dot or any other dot in the main scanning direction of the image data and according to the discriminated result, and then one part of correction data is determined. |
