| 摘要 |
PROBLEM TO BE SOLVED: To improve the image quality of an output image and to improve operability by making optimum image processing possible in accordance with an original kind for each original even in the case of continuously processing the original where a color image and a black-and-white original are mixed by executing image processing equivalent to a different original mode for each color processing mode. SOLUTION: Discrimination whether each picture element inputted is achromatic or not is executed by using Ca and Cb signals obtained by color space conversion at a first color space converting part 3 for a signal read by a scanner part 1 in the pre-scanning at a color discriminating part 4, and a discriminated result is outputted to a controlling part 14. The discrimination whether the original is the color original or the black-and-white original is executed, based on the discriminated result after finishing the pre-scanning of the original at the controlling part 14, so that it is decided whether to set a color processing mode in the main scanning as a color processing mode or a black-and white processing mode. Then the controlling part 14 controls and image processing means so as to execute processing corresponding to a different image mode for each color processing mode. |
