基于图像重投影的视图合成  

View synthesis based on image reprojection

作　　者：刘然[1,2] 朱庆生[1] 易琳[3] 许小艳[1] 

机构地区：[1]重庆大学计算机学院,重庆400044 [2]四川虹微技术有限公司,成都610041 [3]重庆市肿瘤医院,重庆400030

出　　处：《计算机应用》2010年第4期898-901,共4页journal of Computer Applications

基　　金：国家973计划项目(2009ZX01033-001-010);国家863计划项目(2006AA10Z23);国家自然科学基金资助项目(60773082/F0205);中国博士后科学基金资助项目(20080440700)

摘　　要：针对摄像机绕光心旋转的情形,讨论了在这种特殊情形下单应矩阵具有的性质。然后根据这些性质结合三维图像变换技术给出了一种摄像机绕光心旋转时新视图的合成方法。该方法首先利用单应矩阵的性质生成目标图像的一部分,并采用逆向映射的方法以避免产生空洞;接着利用三维图像变换生成目标图像的剩余部分;最后对由三维图像变换生成的部分进行空洞填补。实验结果表明,该方法能够生成质量较好的新视图。What properties the homography should have when the camera rotates around its optical center was discussed.Then combining these properties with the 3D image warping technique,a new way to synthesize novel views when camera rotates around its optical center was proposed.The method first generated part of the novel view by making use of the properties of the homography,and backward mapping method was used to avoid holes;then 3D image warping method was applied to create the remaining part of the novel view;finally,holes in the remaining part which were caused by 3D image warping were filled.Experimental results show that the proposed method provides novel views with quite good image quality.

关 键 词：图像处理 视图合成 图像重投影 单应矩阵 深度图 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TP319[自动化与计算机技术—计算机科学与技术]