Extracting data from ROI an IR image and discarding other pixels

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Kan
Kan 2019-3-22
回答： Image Analyst 2019-3-25
FLIR2100.jpg
Hi, I am new to matlab. I am trying to extract pixel data of a particular region (ROI defined by the user) in order to characterise that region. But I only want to extract this ROI and remove all other pixels. Any recommended approaches/code?

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回答（2 个）

Image Analyst
Image Analyst 2019-3-25
See my attached demo.
Shivam Gupta
Shivam Gupta 2019-3-25
You can extract pixel data of a particular region by using IMCROP function.
For example,
I= imread('example.png');
imshow(I);
rect = [290 160 220 165];
I2= imcrop(I,rect);
figure
imshow(I2);
For more information, see:
https://in.mathworks.com/help/matlab/ref/imshow.html?searchHighlight=imshow&s_tid=doc_srchtitle
https://in.mathworks.com/help/matlab/ref/imread.html?searchHighlight=imread&s_tid=doc_srchtitle
https://in.mathworks.com/help/images/ref/imcrop.html?searchHighlight=imcrop&s_tid=doc_srchtitle

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