The values of pixels in a new image matrix are obtained by mapping pixels of the new matrix in the old matrix and then using polynomial interpolation of a plurality of values of pixels in the old matrix to obtain values of interim pixels in the new matrix and then using polynomial interpolation of a...http://www.google.fr/patents/US4653013?utm_source=gb-gplus-shareBrevet US4653013 - Altering spatial characteristics of a digital image
Altering spatial characteristics of a digital image