论文部分内容阅读
本文提出了一种基于ＩＩＲ指数平滑滤波与非线性Ｌａｐｌａｃｉａｎ算子的边缘检测方法，具有以下特点：采用最佳指数平滑滤波器增强抗噪声能力，且可实现无限大窗口的快速递归运算；利用非线性Ｌａｐｌａｃｉａｎ算子只沿边缘方向增强边缘，充分利用了边缘的局部方向信息；引入边缘强度信息，在二阶零交叉处根据边缘强度定位边缘；运算量独立于滤波器窗口尺寸，具有较高的计算效率．通过与ＬＯＧ算子的对比实验和在立体视觉中的应用表明，该方法具有良好的实用性．
In this paper, an edge detection method based on IIR exponential smoothing and non-linear Laplacian operators is proposed. The method has the following features: The best exponential smoothing filter is used to enhance the anti-noise ability and fast recursive computation of infinite windows; The linear Laplacian operator only enhances the edge along the edge direction and makes full use of the local orientation information of the edge. The edge intensity information is introduced to locate the edge according to the edge strength at the second-order zero-crossing. The computation amount is independent of the filter window size, Computational efficiency. The comparison with LOG operator and the application in stereo vision show that this method has good practicability.