How to Find the image gradient and magnitude and angle. I’ve attached the 2pic, tells which is foreground & background needs to remove for process. thanks

Question

Nav 2022-1-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1625925-how-to-find-the-image-gradient-and-magnitude-and-angle-i-ve-attached-the-2pic-tells-which-is-foreg

编辑： Nav 2022-1-13

%Aim is how to find multiple gradient and magnitude and angle for edge detection of this image?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Image Analyst 2022-1-10

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1625925-how-to-find-the-image-gradient-and-magnitude-and-angle-i-ve-attached-the-2pic-tells-which-is-foreg#answer_871800

There are imgradient() and imgradientxy() functions. I'm not sure what is background in the images. There are lots of regions that could potentially be considered as "background". Can you identify the background and foreground regions? And what is your algorithm for detecting defects? Some sort of morphological subtraction based on using imbinarize on the original image? Note that you cannot use imbinarize on two images if the images are different because it may choose different thresholds for each image so you can't compare them. You'll have to use graythresh() on one of the images and then use that threshold gray level to apply to both images.