Multirate Filter Bank-based Conversion of Image Resolution

This paper proposes a multirate processing scheme for the conversion of image resolution by using filter banks. A resolution-converted signal is synthesized from decomposed ones by the filter banks. A new design of filter banks for resolution conversion is proposed. The design strategy is that we make the output of synthesis filter banks nearly equal to the one of a direct resolution conversion approach. Simulation results are also given, in which we examine the performance of the proposed synthesis scheme