How to display an existing ROI on an image (Copy an ROI to another image)

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YZ
YZ am 27 Mär. 2014
Kommentiert: Surya Gnyawali am 10 Jul. 2017
Hi, Guys,
I have 2 images with the same size. An ROI was drawn on 1st image. I want to display this ROI on 2nd image. The key is to display this ROI at the same location on 2nd image. Please see the following example.
% Read 1st image and display it
i1 = imread('cameraman.tif');
figure(1)
imshow(i1);
h=imellipse; % Draw ROI on 1st image
% Read 2nd image and display it
i2 = imread('cameraman.tif');
figure(2)
imshow(i2);
How to copy the ROI generated on 1st image (h) to Figure (2) and display it? Thank you!

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Joseph Cheng
Joseph Cheng am 27 Mär. 2014
with the h = imellipse; you can get the points by doing
vert = getVertices(h)
figure(2),imshow(i2),hold on;
plot(vert(:,1),vert(:,2))
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Joseph Cheng
Joseph Cheng am 28 Mär. 2014
That shows most parameters you can change for your plot. Additionally you can look at the plot documentation in the link below.
plot(x,y,'--gs',...
'LineWidth',2,...
'MarkerSize',10,...
'MarkerEdgeColor','b',...
'MarkerFaceColor',[0.5,0.5,0.5])
http://www.mathworks.com/help/matlab/ref/plot.html
Surya Gnyawali
Surya Gnyawali am 10 Jul. 2017
It doesnt work with imrect. Can you please explain me why?

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