自动化学报2012，Vol.38Issue(4)：525-530,6.DOI:10.3724/SP.J.1004.2012.00525
边导向的双三次彩色图像插值
Edge-directed Bicubic Color Image Interpolation
摘要
Abstract
Image interpolation becomes very important because various low-cost digital cameras and camcorders have spread widely. Most of the existing image interpolation methods are geared to gray images. Interpolating a color image is usually implemented by the componentwise interpolation scheme using gray image interpolation methods, which is insufficient and results in additional artifacts. In this paper, a novel edge-directed bicubic color image interpolation method is proposed. Our method is an extension to the classical bicubic convolution interpolation. Our improvement includes: considering the correlation between color channels; giving a new method of color edge detection and a novel scheme estimating the missing pixels. The proposed method can well preserve the edges and textures, and noticeably suppress common artifacts such as blurring, blocking and aliasing in interpolated images. The experimental results demonstrate that it outperforms significantly the bicubic interpolation in terms of both objective and subjective measures.关键词
彩色图像处理/边导向/双三次卷积/图像插值/图像放大Key words
Color image processing, edge-directed, cubic convolution (CC), image interpolation, image zooming引用本文复制引用
周登文,申晓留..边导向的双三次彩色图像插值[J].自动化学报,2012,38(4):525-530,6.基金项目
北京市支持中央在京高校共建项目(“首都高校重点科研平台大型仪器设备共享管理信息系统”),北京市自然科学基金(4112061)资助 （“首都高校重点科研平台大型仪器设备共享管理信息系统”）
