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Castaneda, V.* ; Mateus, D. ; Navab, N.*

Stereo time-of-flight with constructive interference.

IEEE Trans. Pattern Anal. Mach. Intell. 36, 1402-1413 (2013)
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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 Article Number: , Supplement: ,
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Reviewing status Peer reviewed