Check if a binary image is within a particular binary area

4 次查看（过去 30 天）

显示更早的评论

Elysi Cochin 2022-4-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1703690-check-if-a-binary-image-is-within-a-particular-binary-area

评论： DGM 2022-4-25

采纳的回答： DGM

I have a binary image BW_large, and another binary image BW_small

How do I check if BW_small is within BW_large?

采纳的回答

DGM 2022-4-24

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1703690-check-if-a-binary-image-is-within-a-particular-binary-area#answer_949590

编辑：DGM 2022-4-24

在 MATLAB Online 中打开

I'm assuming your images are the same size, but contain objects of differing size.

The intersection of two binary images A and B is

intAB = A & B;

If the intersection is equal to one of the two images, then that image is wholly contained within the other.

BinA = isequal(B,intAB);

Otherwise, if you have different size images which contain similarly-sized and oriented copies of the same object, you might look at normxcorr() or something.

6 个评论
显示 4更早的评论隐藏 4更早的评论

Elysi Cochin 2022-4-25

Thank you Sir, thats working. Sir one more doubt, how did you find tolerance?

DGM 2022-4-25

在 MATLAB Online 中打开

This gives the ratio of the intersection area to the area of BW3

nnz(intAB3)/nnz(BW3)

请先登录，再进行评论。

更多回答（1 个）

Image Analyst 2022-4-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1703690-check-if-a-binary-image-is-within-a-particular-binary-area#answer_949790

If you just want to know if ANY part of it is within the other blob, then you can make up your marker image and main image, and call imreconstruct(). You have years of image processing experience now so you should be able to figure it out.