Laser & Optoelectronics Progress, Volume. 58, Issue 23, 2328001(2021)
Wavelet and Empirical Mode Decomposition Denoising for GLAS Full Waveform Data
Figures & Tables(4)
Fig. 1. Typical ground feature map and echo waveform of GLAS data. (a) Woodland without slope; (b) woodland with slope; (c) flat land without slope; (d) flat land with slope;(e) buildings without slope; (f) buildings with slope
Fig. 2. Denoising results of 5 methods on GLAS data. (a) Woodland without slope;(b) woodland with slope; (c) flat land without slope; (d) flat land with slope; (e) buildings without slope; (f) buildings with slope
Table 1. Noise reduction accuracy of 5 methods on GLAS data
View tableTable 1. Noise reduction accuracy of 5 methods on GLAS data
Method Precision
index
Woodland without slope Woodland with slope Flat land without slope Flat land
with slope
Buildings without slope Buildings with slope Gaussian SNR 30.5210 27.1948 51.2415 45.5369 18.4426 22.3167 RMSE 0.0143 0.0155 0.0223 0.0174 0.0057 0.0096 WTD-Soft SNR 37.6608 33.4901 63.8431 55.9938 32.6993 28.0127 RMSE 0.0100 0.0113 0.0119 0.0103 0.0028 0.0072 WTD-Improved SNR 47.4859 45.7251 70.7825 65.9482 36.1995 40.8214 RMSE 0.0066 0.0066 0.0029 0.0070 0.0018 0.0013 EMD-WTD SNR 27.4859 25.7251 50.7825 45.9482 12.1995 20.8214 RMSE 0.0166 0.0166 0.0229 0.0170 0.0078 0.0103 EMD-Hurst SNR 34.7496 29.4438 54.8620 48.8775 20.2148 28.1858 RMSE 0.0116 0.0138 0.0186 0.0147 0.0052 0.0072
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Zhenhua Wang, Xiaodan Liu, Xiangfeng Liu. Wavelet and Empirical Mode Decomposition Denoising for GLAS Full Waveform Data[J]. Laser & Optoelectronics Progress, 2021, 58(23): 2328001
Paper Information
Category: Remote Sensing and Sensors
Received: Feb. 18, 2021
Accepted: Mar. 26, 2021
Published Online: Nov. 29, 2021
The Author Email: Liu Xiangfeng (xiangfeng_liu@163.com)
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