Thread Subject:

Trouble with imrotate (not rotating)

Imrotate seems to be translating my image instead of rotating it. Here is the relavent portion of my code:

for r = 1:Full_Size
      
    theta = r; %theta in degrees

    imR = imrotate(imcand, theta); %Uses degrees {'nearest'}
    
    imC = imcrop(imR, rect);

    if (r == 1 || r == center || r == Full_Size)
        figure('Name', strcat('imcandTransformed r:', num2str(theta))); imshow(imC);
    end
end

I am trying to incrementally rotate the image to compare to the original, but the figures that are being displayed have been translated and not rotated. Note: I am using a selected rectangular portion of my original image. I have tried using "Rotate an image about a point"
by Jan Motl but have the same problem.
Anyone with insight here?

If your cropping rectangle is not exactly in the center of the image, then of course it will look like the image was also translated.