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Vector field smoothing via heat flow
conference contribution
posted on 2004-09-20, 00:00 authored by Antonio Robles-KellyAntonio Robles-Kelly, Edwin R HancockWe develop a new method for recovering and smoothing fields of surface normals in shape-from shading. We show how to transform the problem of recovering surface normals that satisfy Lambert's law into that of solving the steady state heat equation for a scalar potential. According to this picture, the smoothed field of surface normals is found by taking the gradient of the scalar field. The heat equation for the scalar field can be solved using simple finite difference methods, and leads to an iterative procedure for vector estimation. We illustrate the utility of the new method on real world imagery and compare our results with those delivered by an alternative.
History
Event
ICPR Pattern Recognition. International Conference (17th : 2004 : Cambridge, United Kingdom)Pagination
94 - 97Publisher
IEEE Computer SocietyLocation
Cambridge, United KingdomPlace of publication
Los Alamitos, Calif.Publisher DOI
Start date
2004-08-23End date
2004-08-26ISSN
1051-4651ISBN-10
0-7695-2128-2Language
engPublication classification
E1.1 Full written paper - refereedCopyright notice
2004, Institute of Electrical and Electronics EngineersEditor/Contributor(s)
Josef Kittler, Maria Petrou, Mark NixonTitle of proceedings
ICPR 2004 : Proceedings of the 17th International Conference on Pattern RecognitionUsage metrics
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