how to select region of interest with same parameter in different image..

Question

pooja dixit 2013-2-20

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https://ww2.mathworks.cn/matlabcentral/answers/64209-how-to-select-region-of-interest-with-same-parameter-in-different-image

Hello, I would like to use ROI at different image multiple times, but it little bit harder. I need to save parametrs of first ROI and then use it at others.. for example if i select first image roi. Then I would like to select second square in different image but with same size as the first one.

Thanks for help

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Answer 1

Thorsten 2013-2-20

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https://ww2.mathworks.cn/matlabcentral/answers/64209-how-to-select-region-of-interest-with-same-parameter-in-different-image#answer_75798

编辑：Thorsten 2013-2-20

在 MATLAB Online 中打开

Select first image ROI

[B1 x y] = roipoly(I1);

Use selected ROI on another image

B2 = roipoly(I2, x, y);

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pooja dixit 2013-2-20

Hello, I would like to use ROI at different image multiple times with imrect tool , but it little bit harder. I need to save parametrs of first ROI and then use it at others.. for example if i select first image roi. Then I would like to select second square in different image but with same size as the first one.

Thanks for help

Image Analyst 2013-2-20

When you're "done" with the rectangle you can right click inside it and select create mask. I think you can also double click inside it to "finish" it.

Alternatively you can use the rbbox() function if you think that's easier. Or if it's not a rectangle, but a polygon, you can use roipolyold().

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