| 摘要 |
PROBLEM TO BE SOLVED: To provide three-dimensional dither algorithm of eliminating floating phenomenon and screen edge dither phenomenon of horizontal scanning lines and vertical scanning lines which are switched by frames to be observed according as frame are switched. SOLUTION: An observed pixel block is expanded to a 4x2 size to include eight pixels and can be analyzed into two 2x2 sub-blocks which each include four pixels. When two least significant bits of a specified pixel are 00, no processing is performed, but when the least significant bits are 10, a moving carry pixel is an up/down moving type in frame switching to provide extra pixel values whose mean value is 2. When two least significant bits are 01 or 11, the moving carry pixels are floated in the order of left-upper, right-lower, left-lower, and right-upper pixels in 1st 2×2 sub-pixel blocks according as frames are switched and in the order of corresponding left-lower, right-upper, left-upper, and right-lower pixels in 2nd 2x2 sub-pixel blocks according as frames are switched. COPYRIGHT: (C)2005,JPO&NCIPI
|
