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Open Access Green as soon as Postprint is submitted to ZB.
Stereo time-of-flight with constructive interference.
IEEE Trans. Pattern Anal. Mach. Intell. 36, 1402-1413 (2013)
This paper describes a novel method to acquire depth images using a pair of ToF (Time of Flight) cameras. As opposed to approaches that filter, calibrate or do 3D reconstructions posterior to the image acquisition, we combine the measurements of the two cameras within a modified acquisition procedure. The new proposed stereo-ToF acquisition is composed of three stages during which we actively modify the infrared lighting of the scene: first, the two cameras emit an infrared signal one after the other (stages 1 and 2), and then, simultaneously (stage 3). Assuming the scene is static during the three stages, we gather the depth measurements obtained with both cameras and define a cost function to optimize the two depth images. A qualitative and quantitative evaluation of the performance of the proposed stereo-ToF acquisition is provided both for simulated and real ToF cameras. In both cases, the stereo-ToF acquisition produces more accurate depth measurements. Moreover, an extension to the multi-view ToF case and a detailed study on the interference specifications of the system are included.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Emerging Technologies ; Reconstruction ; Sensors
ISSN (print) / ISBN
0162-8828
e-ISSN
1939-3539
Quellenangaben
Volume: 36,
Issue: 7,
Pages: 1402-1413
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Computational Biology (ICB)