New edge directed interpolation

Xin Li, M.T. Orchard
2000 Proceedings 2000 International Conference on Image Processing (Cat. No.00CH37101)  
This paper presents a novel edge-orientation adaptive interpolation scheme for resolution enhancement of still images. In order to achieve ideal orientation adaptation, we propose to estimate local covariance characteristics at low resolution but cleverly use them to direct the interpolation at high resolution based on resolution invariant property of edge orientation. Orientation adaptive property guarantees the interpolation always go along the edge orientation but not across it. Our new
more » ... ss it. Our new interpolation scheme can generate images with dramatically higher visual quality than linear interpolation techniques while keeping computational complexity still modest.
doi:10.1109/icip.2000.899369 dblp:conf/icip/LiO00 fatcat:ktqzpqxg5vh3lclsiisacitcra