| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an image encoding method of efficiently encoding even image data having deviation of a frequency distribution that a CG image, a limited-color image, etc., may have. <P>SOLUTION: When pixels adjacent to a pixel of interest increase or decrease in pixel value in the order of the left, left upper, upper, and right upper pixels, the periphery of the pixel of interest shows gradations with high possibility and neighborhood matching encoding mode is entered. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
