公开(公告)号：US20070177217A1

公开(公告)日：2007-08-02

申请号：US11454977

申请日：2006-06-19

申请人： Hsu-Pin Kao ,  Tsang-Hung Tsai ,  Yi-Chia Shan ,  Kai-Hsiang Hsu ,  Hsu-Chia Kao

发明人： Hsu-Pin Kao ,  Tsang-Hung Tsai ,  Yi-Chia Shan ,  Kai-Hsiang Hsu ,  Hsu-Chia Kao

IPC分类号： G06F15/00

CPC分类号： G06T5/003 ,  G06T5/20

摘要： A method for adjusting a target gray level of a target pixel based on a spatial mask is provided. The target pixel is surrounded with N adjacent pixels; each of the N adjacent pixels respectively has an adjacent gray level. The method first multiplies the target gray level with a sharpness index to generate an amplified target gray level and respectively multiplies each of the adjacent gray level with an adjacent index to generate N modified adjacent gray levels. Then, the amplified target gray level and the N modified adjacent gray levels are added up to generate a first gray level sum. The method multiplies the first gray level sum with a multiplying parameter to generate a second gray level sum. At last, the method divides the second gray level sum by a dividing parameter to generate an adjusted gray level for the target pixel.

摘要翻译： 提供了一种基于空间掩码来调整目标像素的目标灰度级的方法。 目标像素被N个相邻像素包围; N个相邻像素中的每一个分别具有相邻的灰度级。 该方法首先将目标灰度级与锐度索引相乘以产生放大的目标灰度级，并分别将相邻灰度级与相邻索引相乘以产生N个修改的相邻灰度级。 然后，将放大的目标灰度级和N个修改的相邻灰度级相加以产生第一灰度级和。 该方法将第一灰度和与乘法参数相乘以产生第二灰度级和。 最后，该方法将第二灰度和除以分割参数，以生成目标像素的调整灰度级。