发明名称 |
Method of edge direction detection based on the correlation between pixels of a vector and an edge direction detection system |
摘要 |
A method for edge direction detection at a selected pixel on a center-line between two lines of an image includes defining two vectors using certain pixels on the two lines. A vector norm is defined which gives an indication of the correlation of between pixels of one vector and pixels of the other vector. If a vertical vector norm value indicates a low correlation in the vertical direction, then it can be assumed that the selected pixel is in a non-vertical edge area. Vector norm values associated with small angles from the vertical direction are used to determine candidate directions for the non-vertical edge. If a candidate direction is verified as being a preferred direction, then a direction-fine tuning process is performed in which vector norm values associated with big angles from the vertical direction are calculated in order to find a more accurate direction for the non-vertical edge.
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申请公布号 |
US2006233443(A1) |
申请公布日期 |
2006.10.19 |
申请号 |
US20060387482 |
申请日期 |
2006.03.22 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
WANG XIANGLIN;KIM YEONG-TAEG |
分类号 |
G06K9/48;H04N7/01;G06T5/00;G06T7/00;H04N5/44 |
主分类号 |
G06K9/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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