| 摘要 |
A dither picture data pre-compression processing method includes steps of dividing the picture document by a dither matrix into a plurality of pixel matrices; taking the pixel values of the same location from every pixel matrix and gathering them into respective groups, permitting every group to be respectively corresponded by a dither matrix element; and using the dither matrix element as the threshold value to process the pixel values of every group into a corresponding binary data for further picture data compression coding.
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