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Conference Papers Year : 2005

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

Abstract

The invariance of the similarity measure in photomet- ric distortions as well as its capability in producing sub- pixel accuracy are two desired and often required features in most stereo vision applications. In this paper we pro- pose a new correlation-based measure which incorporates both mentioned requirements. Specifically, by using an ap- propriate interpolation scheme in the candidate windows of the matching image, and using the classical zero mean normalized cross correlation function, we introduce a suit- able measure. Although the proposed measure is a non- linear 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. Ap- plication of the proposed measure in a number of bench- mark stereo pair images reveals its superiority over existing correlation-based techniques used for sub-pixel accuracy.
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Dates and versions

hal-00864387 , version 1 (23-09-2013)

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Emmanouil Psarakis, Georgios Evangelidis. An Enhanced Correlation-Based Method for Stereo Correspondence with Sub-Pixel Accuracy. 10th IEEE International Conference on Computer Vision (ICCV), Oct 2005, Beijing, China. pp.907-912, ⟨10.1109/ICCV.2005.33⟩. ⟨hal-00864387⟩
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