Fig. 1. Flowchart of the proposed hyperspectral waveform decomposition method

Fig. 2. Schematic diagram of point cloud expansion and identification method

Fig. 3. Schematic diagram of the experimental scene

Fig. 4. Decomposition results of classical waveform decomposition method for echoes of four wavelength channels

Fig. 5. Waveform decomposition results from four wavelength channels using hyperspectral waveform decomposition method

Fig. 6. Reconstructed targets' spectral reflectance results. (a) Classical waveform decomposition method; (b) Hyperspectral waveform decomposition method

Fig. 7. Comparison of the laser point cloud and expansion results. (a) Original point cloud; (b) After expansion; (c) Before indentification; (d) After indentification