首页>
外国专利>
Method of edge direction detection based on the correlation between pixels of a vector and an edge direction detection system
Method of edge direction detection based on the correlation between pixels of a vector and an edge direction detection system
展开▼
机译:基于矢量像素之间的相关性的边缘方向检测方法及边缘方向检测系统
展开▼
页面导航
摘要
著录项
相似文献
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.
展开▼