Digital Image Evolution Apparatus Using Error Diffusion Coefficient Used in Zigzag Method and Threshold Modulation Method Applied to It

摘要

1. TECHNICAL FIELD OF THE INVENTION;The present invention relates to a digital image binarization apparatus using an error diffusion coefficient used in a zigzag method and a threshold modulation method for applying the same.;2. The technical gist of the invention to solve;SUMMARY OF THE INVENTION An object of the present invention is to provide an image binarization apparatus and a threshold modulation method applied thereto to binarize a digital image having a constant gray level, thereby modulating a threshold so that bright and dark regions of the image have a uniform point distribution. have.;3. Summary of the Solution of the Invention;The present invention includes: input pixel updating means for updating an input pixel value; Binarization means for binarizing a current pixel output from the input pixel update means; Binarization error detection means for detecting an error value of the output image of the binarization means; Threshold modulating means for modulating a predetermined threshold of the binarization means; And error and update information value transfer means for transferring the update information value for the input pixel value to the input pixel update means.;4. Important uses of the invention;The present invention is used to binarize a digital image using the error diffusion coefficient used in the zigzag method.