10.1.3 边缘检测(2)
?一阶导数用于可以检测图像中的一个点是否是边缘的点。
?二阶导数的符号可以用于判断一个边缘像素是在边缘亮的一边还是在暗的一边。
10.1.3 边缘检测(3)：Sensitivity to noise
有效。
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z z z z z z z z z ?
δ?
?
10.1.3 边缘检测(11)
Application of LoG
Example 10.16 Application of region growing in weld inspection. connected to at least one pixel in that region.
The image (c) was obtained by thresholding(a), with a threshold
10.5.1 Basic concepts 10.5.1 Basic concepts