Highlight a specific part within an image

Question

Mariam Ramzi 2021-10-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1569788-highlight-a-specific-part-within-an-image

评论： Image Analyst 2021-10-24

Fig.1.jpg

I would like to ask how to read a picture, and then distinguish if there is something inside this picture from another picture is also included.

Depending on the attached images , I would like, for example, to insert image 1 and then identify and define the non-smooth part based on an image containing a non-smooth part, I will include it.

The goal is to highlight areas of an image that are rough and smooth in nature.

Knowing that the images of the original sample will differ each time, and the system has to distinguish that area due to the same image of the part.

I hope I was able to convey the idea and I hope to find an answer.

thanks

2 个评论
显示无隐藏无

DGM 2021-10-23

编辑：DGM 2021-10-23

Define "something inside this picture [say picture A] from another picture [B] is also included".

Does that mean that picture B is a subset of A, or does that merely mean that some feature of B is similar to some feature in A? If the latter, what defines "similar"?

If the goal is simply to find the location of textured regions of A, what is the purpose of using B?

Mariam Ramzi 2021-10-23

编辑：Mariam Ramzi 2021-10-23

DGM

thank you for your comment

Yes the idea is to find specific areas in A (areas of a rough nature) I used B because I could not find another alternative and I thought this is the easiest way, I hope to find a more effective way

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Image Analyst 2021-10-23

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1569788-highlight-a-specific-part-within-an-image#answer_814583

Try something like stdfilt() or entropyfilt() to identify the rough region.

4 个评论
显示 2更早的评论隐藏 2更早的评论

Mariam Ramzi 2021-10-24

Thank you very much for the answer

I appreciate that

But I have a question about the " mask", what exactly does it do, here was my mistake in my previous code

Image Analyst 2021-10-24

@Mariam Ramzi, I did not see your previous code because you did not attach it. In my code, mask is a binary image gotten by thresholding the standard deviation image. The resulting image is true wherever there is high standard deviation (meaning the image is rough there), and false where there is low standard deviation (meaning the image is smooth there). I can analyze your code for the problem but you'd have to attach it.

请先登录，再进行评论。