| 摘要 |
The image processor includes an image filter acquiring unit, a reduced image average value calculating unit, a normalization parameter setting unit, an original image average value calculating unit, an original image reflectance acquiring unit, a normalizing unit, and a correcting unit. The image filter acquiring unit generates either one of the original image filter and the reduced image filter based on the other one of the original image filter and the reduced image filter. The reduced image average value calculating unit calculates an average peripheral value for each pixel in the reduced image using the reduced image filter. The normalization parameter setting unit tabulates frequencies of each reflectance value within the entire range of reflectance values of the reduced image and sets a normalization parameter. The normalizing unit normalizes the reflectance value for each pixel in the original image based on the normalization parameter. The correcting unit corrects a value for each pixel based on the normalized reflectance value for the each pixel in the original image. |
