发明名称 |
Method and apparatus for detecting the location and luminance transition range of slant image edges |
摘要 |
A system that detects the location as well as the luminance transition range of slant image edge in a digital image. The variance value of the pixels inside a rectangular image window centered with a current pixel is checked to determine if the current pixel is in an edge region or a in non-edge region. If the current pixel is in a non-edge region, no further checking is performed. Otherwise, it is determined if the current pixel is a center pixel in a luminance transition range of a slant edge. The values of the current pixel and its neighboring pixels inside the rectangular window are used to determine if the selected pixel is the center pixel in a luminance transition range of a slant edge. If it is, then the exact length of the luminance transition range of the slant edge is determined. Through such a detection process, both the center position and the luminance transition range of slant image edge can be determined.
|
申请公布号 |
US7263229(B2) |
申请公布日期 |
2007.08.28 |
申请号 |
US20030697361 |
申请日期 |
2003.10.30 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
WANG XIANGLIN;KIM YEONG-TAEG |
分类号 |
G06K9/48;H04N5/208;G06K9/00;G06K9/40;G06T5/00;H04N5/14 |
主分类号 |
G06K9/48 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|