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• W4313830063 startingPage "114156" @default.
• W4313830063 abstract "Spatial phase unwrapping (SPU) is a thorny ill-posed problem in the field of three-dimensional(3D) sensing, because the influence of interference signal such as noise signal and aliasing signal has always restricted the stable unwrapping of wrapped phase map. Ingeniously, the simplest filtering method has been used to successfully solve the most complex problem of phase unwrapping that has plagued researchers for years, accompanied by an increase in measurement accuracy. And, a point-to-point phase unwrapping algorithm is proposed, which differs from all previous methods of pixel-by-pixel unwrapping of noise-wrapped phase map. Most importantly, a differential iterative model with less than π/2 phase shift is established to solve the long-standing problem of noise-induced local fringe order inaccuracy in SPU. The proposed model is universal to all SPU methods and can achieve ultra-robust anti-noise ability. Without noise correction, the bi-staggered phase unwrapping method (BSPU) is simplified to determine the fringe order of the smooth wrapped phase more efficiently and accurately. Point-to-point inverse calculation of the noise wrapped phase for adaptive correction of errors can be achieved due to the smoothing characteristics of the phase. The phase in the unstable region is effectively estimated by the iterative filtering model to further improve the measuring accuracy. Experimental results show that the proposed method is ultra-robust and universal in 3D sensing." @default.
• W4313830063 created "2023-01-09" @default.
• W4313830063 creator A5049336189 @default.
• W4313830063 creator A5082296195 @default.
• W4313830063 date "2023-03-01" @default.
• W4313830063 modified "2023-10-10" @default.
• W4313830063 title "Ultra-robust spatial point-to-point phase unwrapping algorithm for severe interference signal in 3D sensing" @default.
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• W4313830063 doi "https://doi.org/10.1016/j.sna.2023.114156" @default.
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