warping is an image resampling utility that allows to apply a deformation to an image. The supported deformations are:
It is useful to apply e.g. small rotations, translations, or scale differences to images to make them fit for 3-colour combination. It can also be used to correct images for detector deformations, usually modelled by a second-degree polynomial. warping uses high quality resampling kernels to perform the resampling, in a reverse warping fashion. To get more information about resampling in image processing, the reader is referred to the image processing litterature.