CASIA OpenIR  > 智能制造技术与系统研究中心  > 多维数据分析
Lighting Estimation of a Convex Lambertian Object Using Redundant Spherical Harmonic Frames
Zhao, Wen-Yong; Chen, Shao-Lin; Zheng, Yuan; et al.; Wen-Yong Zhao
Source PublicationJOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
2013-05-01
Volume28Issue:3Pages:454–467
SubtypeArticle
AbstractAn explicit lighting estimation from a single image of Lambertian objects is influenced by two factors: data incompletion and noise contamination. Measurement of lighting consistency purely using the orthogonal spherical harmonic basis cannot achieve an accurate estimation. We present a novel signal-processing framework to represent the lighting field. We construct a redundant spherical harmonic frame with geometric symmetry on the sphere S2. Spherical harmonic frames are defined over the generating rotation matrices about symmetry axes of finite symmetry subgroups of SO(3), and the generating functions are spherical harmonic basis functions. Compared with the orthogonal spherical harmonic basis, the redundant spherical harmonic frames not only describe the multidirectional lighting distribution intuitively, but also resist the noise theoretically. Subsequently, we analyze the relationship of the irradiance to the incoming radiance in terms of spherical harmonic frames, and reconstruct the lighting function filtered by the Lambertian BRDF (bidirectional reflectance distribution function). The experiments show that the frame coefficients of spherical harmonic frames can better characterize the complex lighting environments finely and robustly.
KeywordLighting Estimationspherical Harmonic Framelambertian Object
WOS HeadingsScience & Technology ; Technology
WOS KeywordADVENT ; IMAGE ; BASES ; LIFE
Indexed BySCI
Language英语
WOS Research AreaComputer Science
WOS SubjectComputer Science, Hardware & Architecture ; Computer Science, Software Engineering
WOS IDWOS:000318509400008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/2913
Collection智能制造技术与系统研究中心_多维数据分析
Corresponding AuthorWen-Yong Zhao
Recommended Citation
GB/T 7714
Zhao, Wen-Yong,Chen, Shao-Lin,Zheng, Yuan,et al. Lighting Estimation of a Convex Lambertian Object Using Redundant Spherical Harmonic Frames[J]. JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,2013,28(3):454–467.
APA Zhao, Wen-Yong,Chen, Shao-Lin,Zheng, Yuan,et al.,&Wen-Yong Zhao.(2013).Lighting Estimation of a Convex Lambertian Object Using Redundant Spherical Harmonic Frames.JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,28(3),454–467.
MLA Zhao, Wen-Yong,et al."Lighting Estimation of a Convex Lambertian Object Using Redundant Spherical Harmonic Frames".JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY 28.3(2013):454–467.
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