利用光度立体法确定的表面法线误差灵敏度分析与校正

应用科学学报 ›› 1994, Vol. 12 ›› Issue (3): 259-266.

利用光度立体法确定的表面法线误差灵敏度分析与校正

杨敬安

合肥工业大学

收稿日期:1992-01-09 修回日期:1992-05-16 出版日期:1994-09-30 发布日期:1994-09-30
基金资助:
国家自然科学基金

ERROR SENSITIVITY ANALYSIS AND CORRECTION FOR SURFACE NORMALS DETERMINED BY PHOTOMETRIC STEREO METHOD

YANG JINGAN

Hefei University of Technology

Received:1992-01-09 Revised:1992-05-16 Online:1994-09-30 Published:1994-09-30

摘要/Abstract

摘要： 利用光度立体法不需要复杂计算就能确定景物内3D物体的表面方向,但容易产生许多误差.为克服这一问题,文中着重研究与分析几种主要误差,提出新的误差灵敏度分析算法.利用这种新算法,使推导过程变得极为简单并能导出十分严密的表面法线灵敏度计算公式.经试验证明,所得结果与光度立体理论完全一致.

关键词: Lambertian反射针图, 误差灵敏度分析, 由明暗恢复形状, 光度立体理论

Abstract: The surface orientation of a 3-D object in a scene can be determined by the photometric stereo method without the need of complicated computation,but this method is susceptible to a number of errors.In this paper, we not only discuss and analyse several kinds of major errors, but propose a new algorithm for error sensitivity analysis.This new one leads to a mush simpler derivation process and substantially rigorous sensitivity formula.It is demonstrated that the experimental results are fully consistent with the photometric stereo theory.

Key words: Error sensitivity analysis, Shape from shading, Lambertian reflectance needle map, Photometric stereo theory

杨敬安. 利用光度立体法确定的表面法线误差灵敏度分析与校正[J]. 应用科学学报, 1994, 12(3): 259-266.

YANG JINGAN. ERROR SENSITIVITY ANALYSIS AND CORRECTION FOR SURFACE NORMALS DETERMINED BY PHOTOMETRIC STEREO METHOD[J]. Journal of Applied Sciences, 1994, 12(3): 259-266.