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Stereo matching method using multiple angular signatures matched by multidimensional dynamic time warping (MD-DTW)
Grogna, David; Guerri, Géraldine; Verly, Jacques
2014In IEEE Xplore Digital Library
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Keywords :
Stereo matching; angular signature; dynamic time warping; DTW; multidimensional dynamic time warping; MD-DTW; SIFT
Abstract :
[en] We consider the problem of matching interest points (IPs) extracted from the two images of a stereoscopic pair. We describe each IP via a descriptor consisting in one angular signature for a grayscale image, three signatures for a color image, and, more generally, N signatures for N coregistered images of different modalities. Each angular signature is generated by spinning a “steerable x-tapered, y-derivative, half-Gaussian filter” 360° around each IP. The novel contribution of the paper is the use of multidimensional dynamic time warping (MD-DTW) for (1) producing a single, common warping for all pairs of corresponding signatures in the two descriptors of two IPs that are candidate for matching, and (2) for computing a single related distance between the two sets of signatures. Preliminary experimental results and a comparison with the results obtained with SIFT descriptors and matching via the smallest Euclidean distance in parameter space demonstrates the value of this novel approach.
Disciplines :
Computer science
Author, co-author :
Grogna, David ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Exploitation des signaux et images
Guerri, Géraldine ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Exploitation des signaux et images
Verly, Jacques ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Exploitation des signaux et images
Language :
English
Title :
Stereo matching method using multiple angular signatures matched by multidimensional dynamic time warping (MD-DTW)
Publication date :
2014
Event name :
3DTV Conference 2014
Event date :
du 2 juillet 2014 au 4 juillet 2014
Audience :
International
Main work title :
IEEE Xplore Digital Library
Peer reviewed :
Peer reviewed
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since 17 November 2014

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