Phase unwrapping algorithms for use in a true real-time optical body sensor system for use during radiotherapy
作者： James Parkhurst , Gareth Price , Phil Sharrock , Christopher Moore
DOI: 10.1364/AO.50.006430
关键词:
摘要: An evaluation of the suitability eight existing phase unwrapping algorithms to be used in a real-time optical body surface sensor based on Fourier fringe profilometry is presented. The are assessed both robustness results they give and their speed execution. evaluated using four sets real human data, each containing five-hundred frames, obtained from patients undergoing radiotherapy, where discontinuity significant. We also present modifications an algorithm, noncontinuous quality-guided path algorithm (NCQUAL), order decrease its execution time by factor 4 make it suitable for use system. modified compared with those algorithms. Three were identified: two-stage (TSNCQUAL)—the presented here—for online processing Flynn’s minimum (FLYNN) preconditioned conjugate gradient method (PCG) enhanced accuracy off-line processing.
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