The following Matlab project contains the source code and Matlab examples used for image(or matrix) rotation and scaling function. This function takes an image or matrix and rotate it by theta (radian, rigid motion) The image could also be enlarged or shrinked by an optional scaling factor  img: input image (or or a 2D Matrix)  dtheta: the amount of rotation in radian  scale: a scalar number that scales the image (default=1)  interpMethod:       'nearest' - nearest neighbor interpolation       'linear' - bilinear interpolation (defalt)       'spline' - spline interpolation       'cubic' - bicubic interpolation  padding: background filling color (0~255, black~white).