Rotate - rotates the image after specifying the angle in degrees. Rotation is implicitly performed with bilinear interpolation.
If the rotation angle is not an integral multiple of 90°, the resulting image is resized to avoid cropping the original image. Blank spaces are filled in
with a constant gray value adjustable in a special window that is triggered by double-clicking on the panel labeled Background.
Flip - flips the image according to the vertical or horizontal axis.