| 摘要 |
An image forming apparatus includes an image interpolation unit to compute a correct pixel value of a target pixel subject to interpolation of a halftone image. The image interpolation unit includes a base pattern setting unit (1101) to set a base pattern including the target pixel, a reference pattern setting unit (1102) to set reference pattern in a region peripheral to the target pixel, an analogous pattern acquisition unit (1103) to acquire at least one analogous pattern analogous to the base pattern from the reference pattern, a high-resolution pattern creating unit (1104) to create a high-resolution pattern having a predetermined resolution or higher by synthesizing the acquired analogous pattern, a pixel value estimating unit (1105) to compute an estimated pixel value of the target pixel based on the created high-resolution pattern, and a pixel value determination unit (1105) to determine the correct pixel value of the target pixel based on the computed estimated pixel value. |
