基于光度立体技术的三维形状重构  

Three-dimensional shape reconstruction based on PMS technology

作　　者：苗绘翠 王吉华[1] 张全英 MIAO Hui-cui;WANG Ji-hua;ZHANG Quan-ying(School of Information Science and Engineering,Shandong Normal University,Jinan 250358,China)

机构地区：[1]山东师范大学信息科学与工程学院,山东济南250358

出　　处：《计算机工程与设计》2019年第2期473-477,522,共6页Computer Engineering and Design

基　　金：国家自然科学基金项目(61472233);山东省自然科学基金项目(ZF2014FM018)

摘　　要：为实现复杂光环境下目标物体的准确三维重构,增加光度立体技术应用的灵活性,提出一种基于光度立体技术的改进算法来估算物体表面的反照率和三维形状。需要通过标定球校准出光源系统的方向参数,利用球谐模型代替朗伯表面模型,计算目标物体表面的反射率和法向量,基于全局积分算法,由法向量恢复物体表面的三维形状信息。比较传统光度立体技术的实现策略,该方法具有误差小、鲁棒性好的优点。An improved algorithm based on photometric stereo technology was proposed to estimate the albedo and the shape of the object surface for realizing the accurate 3 Dreconstruction of the target object in the complex light environment and increasing the flexibility of the application of the photometric stereo technology.The direction parameters of the light source system needed to be calibrated by calibrating the ball.The albedo and normal vectors of the object surface were calculated using the spherical harmonic model instead of the Lambert surface model.The 3 Dshape information of the surface was recovered from the normal vector based on the global integration algorithm.The method has the advantages of small error and good robustness compared with the implementation strategy of traditional photometric stereo technology.

关 键 词：光度立体 球谐模型 法向量 表面梯度 三维形状重构 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]