A method of correcting an image with perspective distortion and creating an artificial
image with perspective distortion is disclosed. First, image data including a distorted
object image are received. Next, the user inputs an operational instruction for
setting a plurality of distortion parameters pertaining to the image data, which
include a distorted side of the distorted object image, a central line and a distortion
ratio. Thus, a plurality of coordinates of corners of the distorted object image
are calculated according to these distortion parameters and a transformation matrix
is determined according to the calculated coordinates of the corners of the distorted
object image. Finally, the distorted object image is transformed to a corrected
object image according to the transformation matrix.