3D roataion of image (jpg image)
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Dear All,
How can I rotate in 3D the jpg image in Matlab. The imrotate does it only in 2D? I found the rotate function and 3D rotate, but I don't know could I use these 2 functions for this problem! Thank You in advance!
Laslo
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Risposta accettata
Chandra Kurniawan
il 25 Gen 2012
Hi,
in Matlab R20011a, I don't face any problem with imrotate to rotate 3D image
I = imread('football.jpg'); %3D image
J = imrotate(I,30);
imshow(J);
But, you also can rotate it by :
I = imread('football.jpg'); %3D image
s = 30;
J(:,:,1) = imrotate(I(:,:,1),s);
J(:,:,2) = imrotate(I(:,:,2),s);
J(:,:,3) = imrotate(I(:,:,3),s);
imshow(J);
2 Commenti
slama najla
il 16 Giu 2012
Spostato: DGM
il 20 Feb 2023
hello i try imrotate us on 2d but it change the size of the 3d image, is it normal or no
Image Analyst
il 16 Giu 2012
Spostato: DGM
il 20 Feb 2023
If you didn't clip the rotated image to the canvass, but instead enlarged the canvass, it might appear to be shrunk because it may fit the enlarged canvass into the same display area.
Più risposte (2)
Chandra Kurniawan
il 25 Gen 2012
Hi, I have read your message to my email.
I see your problem.
Imrotate cannot rotate an image in z - direction.
Please try imtransform instead.
Maybe this helps.
Eq:
I = imread('football.jpg');
Dorig = [0 0; 1 0; 1 1; 0 1];
Dtrans = [-4 2; -8 -3; -3 -5; 6 3];
tform = maketform('projective',Dorig,Dtrans);
B = imtransform(I,tform,'udata',[0 1],'vdata',[0 1],'size',size(I));
imshow(B);
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/168360/image.jpeg)
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Walter Roberson
il 16 Giu 2012
Modificato: John Kelly
il 12 Mar 2015
If you want to be able to rotate an image dynamically, then you need to create it as a texture map.
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