DEVICE AND METHOD FOR DETERMINING INVERSE FILTER FOR BLUR CORRECTION, IMAGE DEVICE WITH BLUR CORRECTING FUNCTION AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To easily determine an inverse filter for blur correction to cope with wide frequency components. SOLUTION: An original image in which plural sheets of images of different originals are digitized substantially at a state without degradation and a degraded image in which plural sheets of images of different originals are digitized substantially at a degraded state are inputted respectively, Fourier transformation of the inputted original is executed and the Fourier transformation of the degraded image corresponding to the original image is simultaneously executed by a Fourier transforming part 8 of an inverse filter computer 3. Transfer functions to be obtained by dividing a result of the Fourier transformation of the degraded image by a result of the Fourier transformation of the corresponding original image are created respectively by a transfer function creating part 9. The inverse filter for blur correction to correct blur of the image of the original to be provided to a main image scanner 2 is determined based on the transfer functions created from the plural sheets of originals by an inverse filter calculating part 10.