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2005
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An Enhanced Correlation-Based Method for Stereo Correspondence with Sub-Pixel Accuracy

13 years 3 months ago
An Enhanced Correlation-Based Method for Stereo Correspondence with Sub-Pixel Accuracy
The invariance of the similarity measure in photometric distortions as well as its capability in producing subpixel accuracy are two desired and often required features in most stereo vision applications. In this paper we propose a new correlation-based measure which incorporates both mentioned requirements. Specifically, by using an appropriate interpolation scheme in the candidate windows of the matching image, and using the classical zero mean normalized cross correlation function, we introduce a suitable measure. Although the proposed measure is a nonlinear function of the sub-pixel displacement parameter, its maximization results in a closed form solution, resulting in reduced complexity for its use in matching techniques. Application of the proposed measure in a number of benchmark stereo pair images reveals its superiority over existing correlation-based techniques used for sub-pixel accuracy.
Emmanouil Z. Psarakis, Georgios D. Evangelidis
Added 15 Oct 2009
Updated 30 Oct 2009
Type Conference
Year 2005
Where ICCV
Authors Emmanouil Z. Psarakis, Georgios D. Evangelidis
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