图像的边缘检测对图像的分割、图像信息的提取等都非常重要。由于闪烁光斑的原因,SAR图像的边缘检测比一般的光学图像更难。利用htrous小波变换、图像块生长和wavelet snake算法相结合,本文提出了一种检测SAR图像中河岸边缘的新算法,并成功用于提取淮河SAR图像中的一段水岸边缘。
Edge detection is very important for image segmentation, information extraction, etc. Because of noise and speckle, the edge detection of SAR images is more difficult than common optical images. A new algorithm for detecting the boundaries between land and water from SAR images are designed by using htrous wavelet transform, block-growing algorithm and wavelet snake algorithm, the new algorithm is successful in detecting the part edge of Huai River.