how can I rotate an image about an arbitrary point in that image

how can I rotate an image about an arbitrary point in that image

[Rik]

What did you already try?

Answer 1

[Srinath Tankasala]

The ability to rotate an image around a point is not available directly in MATLAB.

However, to work around this issue, rotating an image around a point is possible by first zero-padding the image (calculating how many rows and columns to pad to create a "virtual center"), rotating around its center (using "imrotate"), and then cropping to remove the initial padding ("un-pad" the image).

There is a File exchange submission that performs this rotation using the above methodology.

Download this file and add it to MATLAB's path before use. The provided example in the function's help documentation works fine:

imshow(rotateAround(imread('eight.tif'), 1, 1, 10));

[Rik]

Comment posted as answer by Mustafa Emresoy:

What if the rotation point is not an interger pixel location? This will introduce error