| 摘要 |
PROBLEM TO BE SOLVED: To generate an image object subjected to antialiasing. SOLUTION: In the method and apparatus for antialiasing images that contain an image object such that the edge pixels of the image object subjected to antialiasing will exhibit relatively uniform values, and the appearance of the image object is thereby improved, an improved antialiasing filter is employed to detect at least one region within the received image. Upon detecting a region containing a background image level that adjoins an image object having pixel values in a range other than a range of limit values, the antialiasing filter sets the pixel values of the edge or border pixels of the image object to substantially the same value. Selection among a logical filter operation and an averaging filter operation may be adaptively employed in the antialiasing filter in order to obtain the desired uniformity of pixel values. COPYRIGHT: (C)2005,JPO&NCIPI |
