An edge-preserving image interpolation system for a digital camcorder

Abstract

Conventional image interpolation techniques degrade quality of the magnified image due to various artifacts, such as, blocking artifact and excessive smoothing. Those degradations become worse as the magnification ratio increases. And there also exists tradeoff between reducing blocking artifact and excessive smoothness. In this paper, an image interpolation system, which provides more naturally magnified images than the conventional ones, is proposed. The system preserves the original edge while not destroying the smoothness in flat area. Hardware structure of the proposed system is also proposed.