1. A method implemented in an image processing device for modifying stereoscopic images, comprising: retrieving, by an image processing device, a stereoscopic image having at least a first view image and a second view image; retrieving an orientation selection relating to the stereoscopic image, the orientation selection comprising a selection other than one of: a horizontal flip selection and a 180 degree rotation selection; calculating a depth map according to at least part of the stereoscopic image; rotating the first view image based on the orientation selection to obtain a rotated first view image; and generating a new second view image according to the depth map and the rotated first view image.