Coupling Dilated Encoder–Decoder Network for Multi-Channel Airborne LiDAR Bathymetry Full-Waveform Denoising

Performance Assessment of High Resolution Airborne Full Waveform LiDAR for Shallow River Bathymetry

We evaluate the performance of full waveform LiDAR decomposition algorithms with a high-resolution single band airborne LiDAR bathymetry system in shallow rivers. A continuous wavelet transformation (CWT) is proposed and applied in two fluvial environments, and the results are compared to existing echo retrieval methods. LiDAR water depths are also compared to independent field measurements. In...

Airborne Lidar Bathymetry

A Signal Denoising Method for Full-waveform Lidar Data

The lack of noise reduction methods resistant to waveform distortion can hamper correct and accurate decomposition in the processing of full-waveform LiDAR data. This paper evaluates a time-domain method for smoothing and reducing the noise level in such data. The Savitzky-Golay (S-G) approach approximates and smooths data by taking advantage of fitting a polynomial of degree d, using local lea...

Terrain Roughness Parameters from Full-waveform Airborne Lidar Data

As an active remote sensing technique airborne laser scanning (ALS) is able to capture the topography with high precision even for densely forested areas. Due to the high pulse repetition frequency of up to 400 kHz a high sampling rate on the ground can be achieved, which allows the description of the terrain surface in decimeter scale. In this contribution two approaches to characterize terrai...

Morphological characterization of full waveform airborne LiDAR data Context

The main principle of remote sensing LiDAR is to send a laser pulse from a transmitter and to analyze the backscattered signal (in particular its largest amplitude) to reconstruct the 3D position of the encountered objects (to which the intensity of the wave is generally associated). Using airborne LiDAR, it is possible to obtain a series of 3D positions whose analysis is extremely interesting ...