Edge-directional interpolation algorithm using structure tensor
Andrey V. Nasonov, Andrey Serdjevich Krylov, Xenya Yu Petrova, Michael N. Rychagov · Electronic Imaging · 2016
The paper presents a new low complexity edge-directed image interpolation algorithm. The algorithm uses structure tensor analysis to distinguish edges from textured areas and to find local structure direction vectors. The vectors are quantized into 6 directions. Individual adaptive interpolation kernels are used for each direction. Experimental results show high performance of the proposed method without introducing artifacts.