整体变分算法在图像修补中的应用研究.pdfVIP

第 卷 第 期 计算机辅助设计与图形学学报 ， 15 10 Voi . 15 No . 10 年 月 ， 2003 10 JOURNAL OF COMPUTER-AIDED DESIGN COMPUTER GRAPHICS Oct . 2003 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 整体变分算法在图像修补中的应用研究 郑精灵 王树根 （武汉大学遥感信息工程学院 武汉 430079 ） 摘 要 对如何将整体变分模型用于图像修补进行了讨论 主要研究整体变分算法在待修补区为长条形空白区域 . 的图像修补，并根据待修补区为长条形的特点，通过引入权值，对整体变分模型的离散化算法作了改进，使该算法利 用邻域信息仅对待修补空白区域进行填充，而不改变待修补区邻域的像素值. 实验表明，文中算法对窄长条状或线 状空白区域的图像修补是有效的. 关键词 整体变分；图像修补；图像恢复 中图法分类号 TP391 Image Restoration Using Total Variation Approach Zheng Jingiing Wang Shugen （ ， ， ） School of Remote Sensing Inf ormation Engineering Wuhan Uniuersity Wuhan 430079 Abstract The totai variation aigorithm appiied to restore image is fuifiied without taking into account denois- ， ing . Then the main research effort focuses on the image inpainting for iong but narrow rectangie biank area and an improved image inpainting method based on the totai variation aigorithm is presented . It introduces different weights into the aigorithm according to the features of biank area to be inpainted， and it oniy restores the iost in- formation for the biank area according to the surrounding information but keeping the surrounding information un- changed . Besides， the proposed aigorithm makes fuii use of the surrounding information during the inpainting process i