Directional Bicubic Interpolation — A New Method of Image Super-Resolution
Jing Liu, Zongliang Gan, Xiuchang Zhu · Advances in intelligent systems research/Advances in Intelligent Systems Research · 2013
Gan Zongliang and Zhu XiuchangAbstr act Bicubic interpolation is a standard method in image interpolation field because of its low complexity and relatively good results.But as it only interpolates in horizontal and vertical directions, edges easily suffer from artifacts such as blocking, blurring and ringing.This paper proposed a new method of image super-resolution which is named directional bicubic interpolation.According to local strength and directions, different ways are used to interpolate missing pixels.Compared with bicubic interpolation, the proposed method can preserve sharp edges and details better.Experiment results show that the proposed method is better than existing edge-directed interpolations in terms of subjective and objective measures, and its computation complexity is low.As high-resolution (HR) images can provide more details and better perceptual quality, image interpolation is required to produce a HR image from its lowresolution (LR) counterpart in many fields, such as medical images, HD videos, satellite imaging, mobile devices (e.g.iphone, ipad, etc) and so on.