| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of line duffers to be used for performing processing in the mask size of (n×n) in the case of filtering processing at an image processor. SOLUTION: An adder 55 adds the range corrected result of an input image from a scanner part 1 through a low-pass filter(LPF) 51 at a range correction part 52 while using an image processing part 37 and the result of multiplying the coefficient of a K parameter at a multiplier 54 through a high-pass filter(HPF) 53 connected parallelly with the LPF 51, and the input image is inputted through an extension/reduction part 56,γcorrection part 57 and error diffusion processing part 58 to a printer part 2. |
