Rotating an Image and Keeping the Bounding Box in Registration

I have an image, a small part of which is surrounded by a bounding box. I rotate the whole image x degrees. How can I also rotate the bounding box by the same angle, thus keeping the bounding box in registration?

I tried the following:

     bbox = [10 20 50 60];
     points = bbox2points(bbox);

Apply a rotation to the points using affine2d and transformPointsForward (a simple rigid rotation). However, I cannot convert the list of points back to a bounding box. Thanks for your help.

Answer 1

[Chris Williams]

If this is too difficult, I can restrict the transformation of the image to flipud and fliplr. I just need to then apply the same flip to the bounding box.