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How can I put an image over another in a specific coordinate?

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Mara Pereira
Mara Pereira 2022-3-16
回答： Voss 2022-3-16
How can I put an image over another in a specific coordinate?
This is what I have:
row=256;
col=256;
img=ones(row,col)
branco=imshow(img)
hold on
row1=100;
col1=100;
img1=zeros(row1,col1) this is the "black image" I need in a specific coordinate
preto=imshow(img1) (90,70)

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回答（3 个）

Image Analyst
Image Analyst 2022-3-16
编辑：Image Analyst 2022-3-16
See my attached demos. One copies and pastes a small image over a larger canvass image. The other sets up a small axes inside another larger axes, both holding images.
David Hill
David Hill 2022-3-16
row=256;
col=256;
img=ones(row,col);
img(100:190,100:170)=0;%why not just override the image at the pixel locations
imshow(img)
Voss
Voss 2022-3-16
Ran in:
Here is a thing you can try:
row=256;
col=256;
img=ones(row,col);
branco=imshow(img);
hold on
row1=100;
col1=100;
img1=zeros(row1,col1); % this is the "black image" I need in a specific coordinate
% specify the XData and YData of the black image to set its location:
preto = imshow(img1,'XData',90+[0 row1],'YData',70+[0 col1]); % (90,70)
% turn on the axes so you can see coordinates
set(gca(),'Visible','on')

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