摘要
在多尺度小波变换局部模极大值图的基础上,分别以图像边缘链的长度和按边缘链长自适应分块的块灰度作为双重阈值检测图像的边缘。实验表明,采用这一方法,可获得单像素宽、定位精准、抗噪声效果好的边缘图像。
Based on the local maximum module image of multi-scale wavelet transform, objective edge is detected according to the length of image edge chain and the average gray value of block witch is derived adaptively by the length of image edge chain. The result proves that this arithmetic can afford single pixel - wide, precise location , cleanly anti - noise edge image.
出处
《微机发展》
2005年第9期131-132,共2页
Microcomputer Development
关键词
边缘检测
多尺度方法
小波变换
阈值
edge detection
multi - scale approach
wavelet transform
threshold
