An edge-based adaptive image interpolation and its VLSI architecture

The design of high quality yet real-time image interpolation has become increasingly important for digital TV SoC, as the size of flat-panel display has been steadily increased. This paper aims to develop a real-time image interpolation algorithm that can achieve the high-ratio image scaling with sharp and natural edges. Comparing with conventional image interpolation approaches that often suffer from either image blurring/jagged problem or high computational cost, this paper proposes a high-efficient edge directional image interpolation approach that support multiple interpolation directions and hence can well preserve the detail and edges. Experimental result shows that the proposed image interpolation algorithm is able to achieve high quality at the high image scaling ratio while only incurring very low computational cost. And the VLSI architecture of proposed image interpolation is also presented.