| 摘要 |
PROBLEM TO BE SOLVED: To provide a coding method for improving compression rate by applying coding to a pattern consecutively and repetitively appeared. SOLUTION: The image compression method comprises: scanning a binary image constituting an image for each of 8 lines (rows) and encoding parts not including black pixels while skipping them; detecting a unit pattern of a repetitive pattern among the 8 lines being the scanning unit and counting the number of repetitive times when the lines including black pixels have a dither pattern; then encoding the dither pattern by using the number of repetitive times of the unit pattern, a width (the number of columns) of the unit pattern, and pixel data of the unit pattern. COPYRIGHT: (C)2003,JPO
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