Tag Archives: stéréo

Improving Border Localization of Multi-Baseline Stereo Using Border-Cut

Abstract This paper presents a novel algorithm that improves the localization of disparity discontinuities of disparity maps obtained by multi-baseline stereo. Rather than associating a disparity label to every pixel of a disparity map, it associates a position to every … Continue reading

Posted in IJCV, Marc-Antoine Drouin, Martin Trudeau, Sébastien Roy | Tagged , , , , | Leave a comment

Fast View Interpolation from Stereo: Simpler can be Better

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In this paper, we propose to rely only on images to generate novel views, and recall why modeling of the complete scene is often too expensive in the context of view interpolation. We investigate ways to achieve view interpolation by mean of forward and backward mapping. We present situations in which each one requires less computations and gives better results. Contrary to what we might expect, very simple stereo algorithms can produce very convincing interpolation despite providing really bad disparity maps. We propose to explain this with a probabilistic model of depth discontinuities. We test this model on synthetic data created to fit real image statistics and compare with images widely used in stereo. In practice, forward and backward mapping methods can rely on simple stereo algorithms running in real time, to produce very good results. A sequence of real images was acquired to allow accurate comparison of interpolated images, and standard metrics are used to assess the quality.
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Posted in 3DPVT, Nicolas Martin, Sébastien Roy | Tagged , | Leave a comment

Reconstruction of the surface of the Sun from stereoscopic images

Abstract This thesis concentrates on the stereoscopic reconstruction of environments containing transparent objects. The data used to test the algorithms is graciously provided by NASA through the STEREO mission. This thesis proposes a new spherical rectification technique as well as … Continue reading

Posted in M.Sc., Vlad Lazar | Tagged , , , | 1 Comment

Reconstruction par Stéréo Photométrique

Sorry, this entry is only available in Français.

Posted in Jamil Draréni, prédoc | Tagged , , | Leave a comment

Non-uniform Hierarchical Geo-consistency for Multi-baseline Stereo

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Abstract We propose a new and flexible hierarchical multi-baseline stereo algorithm that features a non-uniform spatial decomposition of the disparity map. The visibility computation and refinement of the disparity map are integrated into a single iterative framework that does not … Continue reading

Posted in CRV, Marc-Antoine Drouin, Martin Trudeau, Sébastien Roy | Tagged , , , | Leave a comment

(English) Improving Border Localization of Multi-Baseline Stereo Using Border-Cut

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Abstract This paper presents a novel algorithm that improves the localization of disparity discontinuities of disparity maps obtained by multi-baseline stereo. Rather than associating a disparity label to every pixel of a disparity map, it associates a position to every … Continue reading

Posted in CVPR, Marc-Antoine Drouin, Martin Trudeau, Sébastien Roy | Tagged , , , | Leave a comment

(English) Fast Multiple-baseline Stereo with Occlusion

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Abstract This paper presents a new and fast algorithm for multi-baseline stereo designed to handle the occlusion problem. The algorithm is a hybrid between fast heuristic occlusion overcoming algorithms that precompute an approximate visibility and slower methods that use correct … Continue reading

Posted in 3DIM, Marc-Antoine Drouin, Martin Trudeau, Sébastien Roy | Tagged , , , , | Leave a comment

(English) Geo-consistency for Wide Multi-Camera Stereo

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Abstract This paper presents a new model to overcome the occlusion problems coming from wide baseline multiple camera stereo. Rather than explicitly modeling occlusions in the matching cost function, it detects occlusions in the depth map obtained from regular efficient … Continue reading

Posted in CVPR, Marc-Antoine Drouin, Sébastien Roy | Tagged , , , , | Leave a comment

(English) Non-Uniform Hierarchical Pyramid Stereo for Large Images

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Abstract This paper addresses the stereo correspondence problem where the images are large enough to make stereo matching difficult. In order to reduce the problem size, we propose a new non-uniform hierarchical scheme with the ability to handle different coarseness … Continue reading

Posted in Marc-Antoine Drouin, Sébastien Roy, VMV | Tagged , , | Leave a comment

(English) Energy Minimization with Linear Smoothness Term: A Proof of Uniqueness of Solution for an Undirected Graph Formulation

iconeproof2001

Abstract (see paper) Reference Martin Trudeau and Sébastien Roy, Energy Minimization with Linear Smoothness Term: A Proof of Uniqueness of Solution for an Undirected Graph Formulation, Technical report DIRO, 15-2-2001 (final TR number not assigned yet). Document flowproof2001.pdf

Posted in Martin Trudeau, Rapports techniques, Sébastien Roy | Tagged , , , | Leave a comment