Infrared and Laser Engineering, Volume. 52, Issue 8, 20230126(2023)
Phase unwrapping technology for structured light three-dimensional measurement: A review (invited)
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Fig. 2. Schematic diagram of the optimal three-frequency selection. (a) Wrapped phase with fringe frequency of 9; (b) Wrapped phase with fringe frequency of 8; (c) Wrapped phase with fringe frequency of 6; (d) Unwrapped phase
Fig. 3. Example of phase unwrapping based on directional parallel mapping[73]
Fig. 5. (a) Flowchart of the proposed method in Ref. [107]; (b) Schematic of CNN1; (c) Schematic of CNN2
Table 1. Comparison of typical phase unwrapping methods
View tableView in ArticleTable 1. Comparison of typical phase unwrapping methods
Method classification Typical method Reference Number of patterns Measured speed Noise resistance Accuracy TPU PU-GC [ 33 ,36 -37 ,39 ,41 ]Medium High High Low MFPU [ 13 ,48 ,52 ,54 -55 ,61 ]High Low High High MWPU [ 15 ,62 -63 ]High Low Low Medium NTPU [ 64 -66 ]Medium Medium Medium High SPU QGPU [ 68 ,70 ,73 -74 ,77 ,79 ]Low High Low Low BCPU [ 84 ,87 ]Low High High Low PU-DL PhaseNet [ 97 -98 ]Medium High Medium Medium TriNet [ 103 ]Medium High High Medium MCDL [ 104 ]Low High Medium High BNN [ 109 ]Low High Medium Medium DL-TPU [ 104 -106 ]Medium High High High DCFPP [ 113 ]Low High Medium High MFFN [ 115 ]Low High Medium High LPTPU-DL [ 116 ]Low High Medium High U-DL [ 117 ]Low High Medium High OPU T-SBE [ 120 ]Medium Medium Medium Medium GCPU [ 123 -124 ]Medium High Medium High PCPU [ 126 ]Low High Low Medium
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Zonghua Zhang, Yanling Li, Feng Gao, Nan Gao, Zhaozong Meng, Xiangqian Jiang. Phase unwrapping technology for structured light three-dimensional measurement: A review (invited)[J]. Infrared and Laser Engineering, 2023, 52(8): 20230126
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Received: Mar. 9, 2023
Accepted: Mar. 30, 2023
Published Online: Oct. 19, 2023
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