AustralieFrV1, Main, Exploration, bibRecord, 004072

Local scene flow by tracking in intensity and depth

Identifieur interne : 004072 ( Main/Exploration ); précédent : 004071; suivant : 004073

Local scene flow by tracking in intensity and depth

Auteurs : Julian Quiroga [France, Colombie] ; Frédéric Devernay [France] ; James Crowley [France]

Source :

Journal of visual communication and image representation [ 1047-3203 ] ; 2014.

RBID : Pascal:14-0147828

Descripteurs français

Pascal (Inist)
- Vision ordinateur, Pistage, Estimation mouvement, Flux optique, Analyse mouvement, Recalage image, Brillance, Modélisation, ., Flot de scène, Interface naturelle, Caméra vidéo.

English descriptors

KwdEn :
- Brightness, Computer vision, Image registration, Modeling, Motion analysis, Motion estimation, Natural interface, Optical flow, Scene flow, Tracking, Video cameras.

Abstract

The scene flow describes the motion of each 3D point between two time steps. With the arrival of new depth sensors, as the Microsoft Kinect, it is now possible to compute scene flow with a single camera, with promising repercussion in a wide range of computer vision scenarios. We propose a novel method to compute a local scene flow by tracking in a Lucas-Kanade framework. Scene flow is estimated using a pair of aligned intensity and depth images but rather than computing a dense scene flow as in most previous methods, we get a set of 3D motion vectors by tracking surface patches. Assuming a 3D local rigidity of the scene, we propose a rigid translation flow model that allows solving directly for the scene flow by constraining the 3D motion field both in intensity and depth data. In our experimentation we achieve very encouraging results. Since this approach solves simultaneously for the 2D tracking and for the scene flow, it can be used for motion analysis in existing 2D tracking based methods or to define scene flow descriptors.

Affiliations:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000405
to stream PascalFrancis, to step Curation: 005A57
to stream PascalFrancis, to step Checkpoint: 000209
to stream Main, to step Merge: 004133
to stream Main, to step Curation: 004072

Le document en format XML

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Local scene flow by tracking in intensity and depth

Local scene flow by tracking in intensity and depth

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri