| 摘要 |
<P>PROBLEM TO BE SOLVED: To effect edge enhancement in which over-enhancement is prevented. <P>SOLUTION: Edge pixel determination means 5 determines whether a plurality of pixels arranged in a matrix shape are edge pixels. Weighted individual edge enhancement effect degree calculation means 7, when a pixel of interest is specified, calculates for edge pixels present in a peripheral region of the pixel of interest the degree of a weighted individual edge enhancement effect by taking a distance to or from the pixel of interest into consideration as a weight. Edge enhancement degree calculation means 9 assumes an edge enhancement degree W (x, y) of the pixel of interest as zero if it is smaller than a lower limit threshold THs or as an upper limit threshold Wh if it is larger than an upper limit threshold THh or calculates it following the equation below if it is intermediate between the two: W(x,y)=Wh*(NumE(x,y)-THs)/(THh-THs). <P>COPYRIGHT: (C)2012,JPO&INPIT |
