New Ideas for Stereo Matching of Untextured Scenes

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Startdatum:18. August 2017
Startzeit:13:00 Uhr
Stoppzeit:13:45 Uhr
Veranstalter:Fachbereich Informatik
Referent:Prof. Dr. Daniel Scharstein, Charles A. Dana Professor of Computer Science Middlebury College
Ort:S3 05|074

Two talks for the price of one! I will present two radically different approaches to the challenging problem of stereo matching of scenes with little or no surface texture.

First, I will discuss how surface orientation priors can be added to the popular semi-global matching (SGM) algorithm, which significantly reduces errors on slanted weakly-textured surfaces. The orientation priors serve as a soft constraint during matching and can be derived in a variety of ways, including from low-resolution matching results and from monocular analysis and Manhattan-world assumptions.

Second, we will examine the pathological case of Mondrian Stereo - synthetic scenes consisting solely of solid-colored planar regions, resembling paintings by Piet Mondrian. I will discuss assumptions that allow disambiguating such scenes, present a novel stereo algorithm employing symbolic reasoning about matched edge segments, and discuss how similar ideas could be utilized in robust real-world stereo algorithms for untextured environments.




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64289 Darmstadt

+49 6151 16-25501

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