DIBR中基于平面扫描的深度重建方法(英文)  

A Plane-Sweep Based Depth Reconstruction for DIBR

作　　者：刘苏醒[1] 安平[1] 张兆杨[1] 

机构地区：[1]上海大学通信与信息工程学院

出　　处：《电子器件》2008年第1期320-324,328,共6页Chinese Journal of Electron Devices

基　　金：国家自然科学基金资助项目(60672052、60572127);上海市曙光计划项目资助(06SG43);上海市重点学科建设项目资助(T0102)

摘　　要：提出一种DIBR中基于平面扫描法的深度重建方法,与立体深度重建算法和基于图像的视觉壳算法不同,本文进一步改进平面扫描算法,无需任何场景的几何先验知识,而是利用每个像素点的深度信息合成真实场景的虚拟视点。当输入图像映射至相互平行的虚拟深度平面时,采用"动态判决方法"来计算像素间的色彩一致度;并在虚拟视合成中采用了基于视向权重策略的新视点重建方法。本文算法获取的深度信息更为精确,虚拟新视点的质量得到较大提高。A novel plane-sweep based depth reconstruction method for depth image-based rendering is presented. Unlike depth from stereo and image-based visual hull techniques, our method further develops the plane-sweeping algorithm, and extends it to synthesize ＂virtual＂ views of a real-world scene associated with depth information without any prior geometric information. When projecting the input images into the parallel ＂virtual depth planes＂, a dynamic scoring method to compute the color consistency is introduced. In addition, for building a photorealistic ＂virtual＂ view, we present a view-direction based weighting strategy for depth image-based rendering. An important advantage of our approach is that due to more accurate depth information, better novel views can be acquired.

关 键 词：平面扫描法 深度重建 新视点合成 基于深度的图像绘制 

分 类 号：TP399.41[自动化与计算机技术—计算机应用技术]