Zeitlich konsistente Disparitätsbestimmung in einem globalen Stereo Matching Verfahren
Thesis by Elias Thomas Hiller
Supervision by Margrit Gelautz and Florian Seitner
Abstract
The increasingly popular 3D technology extends the movie experience by an additional dimension: depth. However, this technology introduces entirely new problems. On the one hand, additional aids, such as eyeglasses, are needed and on the other hand, the 3D effect is often used incorrectly, which can lead to discomfort and even headaches. This incorrect use often makes it necessary to reduce the disparity range with digital post-processing depending on the selected output medium. Here, temporal consistency plays an important role, because visually distracting effects can occur otherwise. This thesis presents two different approaches to accomplish temporal consistency in an existing global stereo matching algorithm. The first approach achieves this by spatial-temporal cost aggregation in the local part of the stereo matcher. Alternatively, the second method includes temporal information into the stereo matching process by filtering the costs, based on the previous frame´s disparity map. The extension as well as the comparison of both methods enables a holistic view of the matter. Finally, after introducing the subject of graphic card optimization, solutions are presented to accelerate the more computationally demanding sections of the proposed algorithms.
Reference
E. Hiller: "Zeitlich konsistente Disparitätsbestimmung in einem globalen Stereo Matching Verfahren"; Supervisor: M. Gelautz, F. Seitner; Fakultät für Informatik der Technischen Universität Wien, 2012.
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