Efficient Separation Between Projected Patterns for Multiple Projector 3D People Scanning

Petković, Tomislav; Pribanić, Tomislav; Đonlić, Matea; Sturm, Peter

doi:10.1109/iccvw.2017.101

Cited by 13 publications

(14 citation statements)

References 25 publications

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“…Note that for some scanning setups a particular ℎ A may equal zero if camera and projector do not share a common FOV. As described in our previous work [14] the contributions of each projector may be recovered from the additive sum of Eq. (5) if the following conditions are satisfied:…”

Section: Proposed Multiplexing Using Temporal Phase-shiftsmentioning

confidence: 99%

“…There are two approaches to using multiple projectors in a SL scanner: (1) projectors are employed sequentially in turns [6,7,8] and (2) projectors are employed simultaneously [9,10,11,12,13,14]. The first approach completely avoids the interference problem at the cost of extended scanning time which grows linearly with the number of projectors.…”

Section: Introductionmentioning

confidence: 99%

“…As projectors are used in turns the sequential employment allows one to select and use any of the various SL patterns described in the literature. The second approach offers significant advantage of shorter scanning times but has to cope with the inter-projector interference problem [6,14,15]. This usually requires specifically designed SL patterns which are insensitive to interference.…”

Section: Introductionmentioning

confidence: 99%

“…Spatial multiplexing means assigning a different spatial orientation to each sinusoidal fringe as described by Woolford and Brunett [9] for the case of two projectors. Temporal multiplexing means assigning different temporal phase-shift sequence to each sinusoidal fringe as described in our previous work [14].…”

Section: Introductionmentioning

confidence: 99%

“…We propose to use temporal multiplexing for multi-projector structured light scanning [14] where each fringe has its own carefully selected set of temporal phase shifts, i.e. temporal phase-shifts are selected to form an orthogonal basis of the discrete Fourier transform (DFT) which enables efficient separation of individual fringes from their combination.…”

Section: Introductionmentioning

confidence: 99%

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Multi-Projector Multi-Camera Structured Light 3D Body Scanner

Petković¹,

Pribanić²,

Đonlić³

et al. 2017

Proceedings of 3DBODY.TECH 2017 - 8th International Conference and Exhibition On 3D Body Scanning and Processing Technologies,

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Human body scanners using structured light are usually comprised of one projector which provides a limited view of the body surface due to limited field-of-view. To scan the whole surface of a human body multiple projectors must be used. Using more than one projector in a structured light scanner is typically difficult due to inter-projector interferences which make surface reconstruction a hard task. We propose to use temporal phase-shifts to enable multiplexing in fringe-projection profilometry. In our approach each projector projects a sinusoidal fringe pattern having its own specifically chosen set of temporal phase shifts so for a system of projectors all temporal phase shifts together comprise a DFT basis. Such choice of temporal phase shifts enables simple and efficient separation of the combined pattern into the contributions of each projector. The proposed approach places no constraints on the number of projectors and on spatial projector placement. We demonstrate the applicability of the proposed approach on a prototype human body scanner using three projectors and six cameras.

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Section: Proposed Multiplexing Using Temporal Phase-shiftsmentioning

confidence: 99%