IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND A COMPUTER-READABLE RECORDING MEDIUM WITH A PROGRAM MAKING A COMPUTER EXECUTE THE METHOD STORED THEREIN

Each brightness value for an image data string for each of a plurality of fields successively stored in a RAM, is integrated by an integrator, and a result of the integration is stored in registers. Image data for a current field stored above is stored in a register, and further a one-field pixel average value for the image data is computed. The computed one-field pixel average value is stored in the register. Image data for each field stored in registers, is integrated by an integrator, and further a three-field pixel average value is computed from the result with the computed average value stored in a register. Computing is executed in a computing section by using the one-field pixel average value, three-field pixel average value, and an Image data string stored in the RAM to generate corrected image data.