Image Interpolation Exploiting Phase Diversity

In this paper we present an analysis-synthesis system with adaptive synthesis filters. The general formulation can be employed for image compression applications, but can also be used for image size enlargement. The synthesis section is constructed to contain a multiplicity of outputs with different phase characteristics. By exploiting phase diversity in synthesis, improvement in both PSNR and subjective interpolation quality are possible relative to conventional bilinear and bicubic interpolation methods.