IEEE Trans Pattern Anal Mach Intell - Stereo Time-of-Flight with Constructive Interference.

Tópicos

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Resumo

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.

Resumo Limpo

paper describ novel method acquir depth imag use pair tof time flight camera oppos approach filter calibr d reconstruct posterior imag acquisit combin measur two camera within modifi acquisit procedur new propos stereotof acquisit compos three stage activ modifi infrar light scene first two camera emit infrar signal one stage simultan stage assum scene static three stage gather depth measur obtain camera defin cost function optim two depth imag qualit quantit evalu perform propos stereotof acquisit provid simul real tof camera case stereotof acquisit produc accur depth measur moreov extens multiview tof case detail studi interfer specif system includ

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