Warping is one of the basic image processing techniques. Directly
applying existing monocular image warping techniques to stereoscopic
images is problematic as it often introduces vertical disparities
and damages the original disparity distribution. In this paper,
we show that these problems can be solved by appropriately warping
both the disparity map and the two images of a stereoscopic image.
We accordingly develop a technique for extending existing image
warping algorithms to stereoscopic images. This technique divides
stereoscopic image warping into three steps. Our method first
applies the user-specified warping to one of the two images. Our
method then computes the target disparity map according to the user
specified warping. The target disparity map is optimized to preserve
the perceived 3D shape of image content after image warping.
Our method finally warps the other image using a spatially-varying
warping method guided by the target disparity map. Our experiments
show that our technique enables existing warping methods
to be effectively applied to stereoscopic images, ranging from parametric
global warping to non-parametric spatially-varying warping