| 摘要 |
PROBLEM TO BE SOLVED: To form a correct image with a simple configuration without using a large capacitance of correcting memory by generating a pseudo random number in a pre-processing stage, adding the pseudo random number generated at every image element of inputted image data as noise and execute correction. SOLUTION: When the image of an original is read by CCD 2, CCD 2 transmits a detected image signal to an RGB image output part 3. The RGB image output part 3 interpolates image data of an R-image, a G-image and a B-image which are transmitted from CCD 2, generates image data for every line and transmits them to the adder 42 of a pre-processing part 4 for every image element. In the meantime, the random number generator 41 of the pre- processing part 4 generates the pseudo random number by an image element clock which is outputted from a control circuit part 1 and transmits it to the adder 42. The adder 42 adds the pseudo random number transmitted fro the random number generator 41 to image data for every image element which is inputted from the RGB image output part 32 as noise, executes correction and transmits corrected image data of every image element to an image processing part 5. |
