Patent ID: 6693727
Filing Date: 2004-02-17
Classification: H04N

Abstract:
An image processing apparatus comprising:error correcting means for correcting an input image on the basis of a supplied error correction amount and outputting a corrected image; threshold processing means for processing the corrected image output from the error correcting means on the basis of a predetermined threshold, further processing the corrected image on the basis of the error correction amount, and outputting an output signal; correction amount calculating means for calculating in advance a plurality of correction amounts corresponding to possible values of the output signal in parallel with processing of the threshold processing means on the basis of the corrected image output from the error correcting means, and selecting one of the plurality of error correction amounts as the error correction amount in accordance with a value of the output signal actually output from the threshold processing means; and error correction amount supplying means for supplying the error correction amount calculated and selected by the correction amount calculating means to the error correcting means and the threshold processing means, and diffusing an error of the image to surrounding pixels.