id
	12076
Url
	https://chloe.cnr.it/s/BiDiAr/item/12076
Resource template
	Academic Article
Resource class
	bibo:AcademicArticle
Title
	Obtaining 3-dimensional shape of textured and specular surfaces using four-source photometry
Creator
	Coleman, E. North
	Jain, Ramesh
Date
	1982
Language
	eng
Abstract
	Thephotometric stereo method is extended to four-source photometry for obtaining 3-dimensional shapes of visually textured and specular surfaces from intensity values. The table look-up approach (based on reflectance maps) for determining surface normals is shown to be of limited value in this context and a more direct method of computing these normals is used. Our method also eliminates the requirement of a preliminary system calibration procedure. The method is applied to real images as a test of its applicability.
Is Part Of
	Computer Graphics and Image Processing
Cited by
	11056
Doi
	https://doi.org/10.1016/0146-664X(82)90001-6
Issn
	0146-664X
Issue
	4
Pages
	309-328
Uri
	https://www.sciencedirect.com/science/article/pii/0146664X82900016
Volume
	18
Homepage
	https://www.zotero.org/groups/5293298/bidiar/items/ATVHCU4Y/item-list

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