三维表面纹理高度重建中的光线不均校正  

Correction of non-uniform illumination for 3D surface heightmap reconstruction

作　　者：董军宇[1] 蹇木伟[2] 姜荣[3] 

机构地区：[1]中国海洋大学信息科学与工程学院,山东青岛266100 [2]山东大学威海分校空间科学与物理学院,山东威海264209 [3]威海职业学院信息工程系,山东威海2642101

出　　处：《计算机工程与应用》2008年第34期61-63,共3页Computer Engineering and Applications

基　　金：山东省优秀中青年科学家科研奖励基金项目(No.2006BS01004)

摘　　要：因三维表面纹理能比二维纹理更好地表现物体的纹理信息,而且随场景光照及视角的变化而变化,所以被广泛用于虚拟现实以及计算机游戏等技术之中。Photometric Stereo作为一种有效的获取三维表面纹理信息的技术而被人们所广泛关注。均匀的光照条件是Photometric Stereo捕获和重建三维表面纹理成功的关键条件。在现实应用中,不均匀光照会导致三维表面纹理在捕获和重建过程中发生失真和畸变。针对这种失真和畸变进行了研究,并提出了一种解决此类问题的方法。实验结果表明,该方法简单可行,有效。Because the three-dimensional surface texture can display the texture information of the object better than the two-dimentional lamination and can vary with scene illumination and the view angles,it is widely used in virtual reality and computer games.Photometric Stereo,as one of the effective technologies for capture of three-dimensional surface texture information,has attracted wide attention.Uniform illumination is the essential condition for the capture and reconstruction of three-dimensional surface texture using Photometric Stereo.In practice,non-uniform illumination leads to distorted surface heightmaps during the capture and reconstruction processes.This paper aims to eliminate this kind of distortion and aberration and proposes a simple method to solve the issue.The experimental result shows the effectiveness of the proposed method.

关 键 词：三维表面纹理 纹理捕获 纹理重建 凹凸映射 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]