Shaofeng Zhang, Hubing Du, Ruiqing Guo, Zhouxuan He. Two-Frame Phase Shift Extraction Algorithm Based on Gradient Descent Algorithm[J]. Laser & Optoelectronics Progress, 2020, 57(13): 131205
- Laser & Optoelectronics Progress
- Vol. 57, Issue 13, 131205 (2020)
Fig. 1. Two-frame simulation phase shift stripe maps. (a) 1st frame stripe maps; (b) 2nd frame stripe maps with phase shift Δ
Fig. 2. Theoretical wrapped phase map
Fig. 3. Distribution of amplitude standard deviation and phase shift
Fig. 4. Phase shift extraction errors
Fig. 5. Phase demodulation results. (a) Proposed algorithm; (b) AST algorithm; (c) GS algorithm; (d) ROF algorithm
Fig. 6. RMSE of different algorithms
Fig. 7. RMSE of four algorithms under different SNR
Fig. 8. Two-frame actual stripe maps. (a) 1st frame stripe maps; (b) 2nd frame stripe maps with phase shift Δ
Fig. 9. Reference phase map obtained by AIA
Fig. 10. Wrapped phase maps. (a) Proposed algorithm; (b) AST algorithm; (c) GS algorithm; (d) ROF algorithm
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Table 1. RMSE of four algorithms
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