计算机应用与软件Issue(9)：53-56,4.DOI:10.3969/j.issn.1000-386x.2013.09.016
一种基于自适应多窗口选择的 NEDI改进算法
AN IMPROVED NEW EDGE-DIRECTED INTERPOLATION ALGORITHM BASED ON ADAPTIVE MULTIPLE WINDOWS SELECTION
摘要
Abstract
Classic NEDI ( new edge-directed interpolation ) algorithm uses rectangular template to calculate the interpolation coefficients , this has the limitation of not taking into account the directivity of the pixels within template , besides, it just uses a single window while interpolating , which may lead to the mismatch of covariance in high-resolution and low-resolution , and cause obvious ringing effect in image edges after interpolating and impact the visual quality .In light of these problems , in this paper , we adopt a circular template with the centre in the interpolating point to calculate the interpolation coefficients , and further present an adaptive multiple windows selection approach according to the judging criterion of minimum means square error to chose the most matchable interpolation window .Experimental result indicates that relative to traditional interpolation methods , the proposed algorithm can better preserve the edges information , the interpolation results have better visual effect , and the peak signal noise ratio ( PSNR) is noticeably improved as well .关键词
图像缩放/NEDI/插值系数/多窗口/峰值信噪比Key words
Image zooming/NEDI/Interpretation coefficient/Multiple windows/PSNR分类
信息技术与安全科学引用本文复制引用
刘楠,毕笃彦,李权合..一种基于自适应多窗口选择的 NEDI改进算法[J].计算机应用与软件,2013,(9):53-56,4.基金项目
国家自然科学基金项目（61175029）；国防科技重点实验室基金项目（9140C610301080C6106）；航空科学基金项目（20101996009）。 （）
