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C++ code snippet of our CPU implementation of Gray pattern decoder. 

C++ code snippet of our CPU implementation of Gray pattern decoder. 

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Fig. 1 Projections of 3 out of 10 Gray coded binary patterns onto a...
Table 2 . Average Running Time of Pattern Decoding 
Table 3 . CUDA Running Time Profile 
Fig 5. C++ code snippet of our CPU implementation of Gray pattern decoder. 
Fig 6. GPU program converted from Fig. 5. 
GPU-Accelerated Correspondence Recovery on the Gray Coded Structured Light
Conference Paper
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  • Aug 2014
Structured light is one of the most commonly adopted techniques in 3D shape acquisition. To speed up the scanning time the so-called Gray codification strategy is widely adopted among modern structured light scanners. Such binary codification established dense stereo correspondence map in a fast manner, and has been proved to be optimally robust to...
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... pixel with a threshold í µí¼ ∈ [0,1]. Alternatively one may compute an albedo image A = í µí¼í µí°¼ í µí±ší µí±Ží µí±¥ + (1 − í µí¼)í µí°¼ í µí±ší µí±–í µí±› first, compare it with a captured image í µí°¼ í µí±˜ and do binarisation with respect to the condition í µí°¼ í µí±˜ < A. For a C++ implementation of the described procedure please see Fig. 5. Fig. 3 Principle of depth recovery using an active vision system. Fig. 4 Gray coded light pattern sequence designed for an 8-stripe black-white projector. Note patterns U0 and U1 are augmented for adaptive ...
Context 2
... this work we use a CUDA wrapper comes with the OpenCV 2.4.9 library [14] for matrix manipulation to avoid reinvention of existing low-level CUDA code. The source code (see Fig. 5) of our C++ implementation of Gray pattern decoder are converted to its CUDA alternative ...

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