Observation Selection, Total Variation, and L-Curve Methods for LiDAR Data Denoising

Table 1

The comparison of noisy observations removal by the “Newsom” method, “Baranov” method, HKO method, and proposed method.

Range	Data	SNR	SNR	SNR
359 m–3509 m (total number: 1036067)	LiDAR observations	1033268	1032885	1031484
	Denoising values by the “Newsom” method	1031472	1031472	1031472
	Denoising values by the “Baranov” method	1033268	1032885	1031484
	Denoising values by the HKO method	1033212	1032874	1031484
	Denosing values by the proposed method	1032987	1032793	1031394
3509 m–6659 m (total number: 836510)	LiDAR observations	793282	772883	678138
	Denoising values by the “Newsom” method	677112	677112	677112
	Denoising values by the “Baranov” method	793282	772883	678138
	Denoising values by the HKO method	791440	772670	678130
	Denosing values by the proposed method	786772	772632	678043
6659 m–9809 m (total number: 455697)	LiDAR observations	281927	184425	77073
	Denoising values by the “Newsom” method	76645	76645	76645
	Denoising values by the “Baranov” method	281927	184425	77073
	Denoising values by the HKO method	263033	183026	77018
	Denoising values by the proposed method	247713	184353	77070