| 摘要 |
PROBLEM TO BE SOLVED: To provide an image compression method for implementing vertical and horizontal white skipping that compresses data in an area including black pixels other than a skipping area. SOLUTION: This method applies vertical and horizontal white skipping to the skipping area, detects areas where pixel values smoothly change like character contours as for other areas, and decodes the image according to a pixel value of a top line of the area, the number of the lines, and a pixel value change amount. Thus, the image compression rate can be improved so as to greatly contribute to the reduction in the storage capacity for data storage and reduction in a data transfer time. COPYRIGHT: (C)2003,JPO
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