| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an improved image processing method and system. <P>SOLUTION: The improved method and system involves edge-adaptive interpolation. The method uses a "9×2" window to detect the edge direction with post-processing to remove any artifacts due to possible false edge direction detection. A hierarchical scheme may be employed to reduce the computation required. The method determines if there exists an edge along the current pixel. To improve the edge detection precision, and also to remove the possibility of false edge direction detection, a post-processing technique is applied to the edge direction signal. After the edge signal post-processing, the edge direction information is then passed to the edge adaptive interpolation block to perform interpolation along the edge direction detected. Still another post-processing technique may be applied to the edge adaptive interpolated signal to further remove the possible noise due to an incorrect edge direction detection. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
