Image Rotation

I want to rotate an image through the rotation matrix whose center of rotation is variable.

Answer 1

[Sean de Wolski]

doc maketform
doc imtransform

Or you could pad the image so that the center of rotation is the center, use imrotate and then unpad as necessary.

Answer 2

[ahlem]

imrotate actually enlarges the dimensions of the image that is why I want to multiply the rotation matrix "R = [cos (angle)-sin (angle), sin (angle) cos (angle)]" with the image I

[Sean de Wolski]

IMROTATE _can_ do expand the dimensions, yes. It also has a 'crop' option that maintains the original dimensions.

[ahlem]

Thank you sean .

Actually, my work is to implement generalized Radon whose projections are rectangles. I do the rotation of each rectangle then I go through the main image to find the peak.

that's why the Imrotate don't work with!!!