图像边缘检测的改进方法

Approach of improving image edge examination

为了对sobel算子检测进行改进,使其检测的边缘连续,对二进制小波变换的图像边缘检测算法进行了改进,在进行二进制小波变换分解时,将原始分解滤波器h和g相邻系数间内插2j个"0"得到尺度j的分解滤波器hj和gj,然后再进行小波变换。改进后的算法提取了图像边缘,有效地去除图像的噪声。实验表明:改进的算法算法简单、易于编程。

The way of sobel operator examination is improved to cause its edge to be continual and the algorithm for image edge detection of binary wavelet transformation is also improvd, that is, when transforming and decomposing of binary wavelet, 2j ＂0＂s are inserted between adjacent modulus of primitive decomposition wave filter h and g to get j in decomposition wave filter hj and gj and then wavelet transformation is made. The improved approach has advantages of abstracting image border and deliminating noise of the image effectively. Experiments prove that the improved algorithm is simple and easy to program.