MATLAB: WIll imtransform shift the center

Image Processing Toolboximrotateimtransform

Hi, I am trying to rotate the image by using imtransform. However I realise that it is different to imrotate as I cant define the center. I believe that by using the imtransform will shift the image center. Is there a way that I can define the center point for transformation or I better to use imrotate instead? Sorry for asking stupid question.

Best Answer

Don't use imtransform to shift the center. Use imtranslate() instead.

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MATLAB: How to get the new coordinates of a point after rotation of an image (2D)

P = [5;8];    % coordinates of point
alpha = 45;   % angle for rotation
RotatedIm = imrotate(im,alpha);   % rotation of the main image (im)
RotMatrix = [cosd(alpha) -sind(alpha); sind(alpha) cosd(alpha)]; 
ImCenterA = (size(im)/2)';         % Center of the main image
ImCenterB = (size(RotatedIm )/2)';  % Center of the transformed image
RotatedP = RotMatrix*(P-ImCenterA)+ImCenterB;

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MATLAB: How to get the new coordinates of a point after rotation of an image (2D)

MATLAB: How to calculate degree of similarity between two images

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