NDLI: Shape from shading via the fusion of specular and Lambertian image components

Content Provider	IEEE Xplore Digital Library
Author	Clark, J.J. Yuille, A.L.
Copyright Year	1990
Description	Author affiliation: Div. of Appl. Sci., Harvard Univ., Cambridge, MA, USA (Clark, J.J.; Yuille, A.L.)
Abstract	A closed-form analytical solution to the problem of obtaining surface-normal information from the specular and Lambertian components of the image of a surface is presented. It is shown that this algebraic approach to the fusion of data is extremely sensitive to noise, and therefore two alternative approaches based on the minimization of energy functionals are provided. The first approach weights the specular and Lambertian information uniformly over the image with respect to a smoothness constraint. The second approach weights the specular and Lambertian component adaptively according to a measure of the sensitivity of the algebraically derived surface normals to noise in the measured image components. This results in a greater dependence on the smoothness constraint in the parts of the image where the surface reconstruction process is most sensitive to noise and provides a more accurate reconstruction of the surface than the uniform weighting technique.
Starting Page	88
Ending Page	92
File Size	601318
Page Count	5
File Format	PDF
ISBN	0818620625
DOI	10.1109/ICPR.1990.118070
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-06-16
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Shape Reflectivity Equations Surface reconstruction Image reconstruction Data mining Polarization Light sources Image analysis Information analysis
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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