Water-Land-Classification in Coastal Areas with Full Waveform Lidar Data
نویسنده
چکیده
flat, a high accuracy of the DTM is required for tasks such as hydrographic modelling. Airborne lidar (light detection and ranging) has become a standard method for DTM generation in coastal zones. The lidar technique has two main advantages compared to traditional aerial photogrammetry: Firstly, the active laser technique works independently from illumination from the sun, which allows mapping also during night-time. Secondly, the elevation model can be directly inferred from the two-way time-of-flight of the pulse reflected at the ground, whereas stereo techniques rely
منابع مشابه
Classification of lidar data into water and land points in coastal areas
Over the last years lidar has become one of the major techniques to obtain spatial data in coastal areas. Due to the fact that lidar systems can provide several 3D points per square meter and high height accuracy, lidar data is suitable for several applications in the field of coastmonitoring and coastprotection. Generally, a digital terrain model (DTM) is used as basic spatial information for ...
متن کاملLand Classification of Wavelet-compressed Full-waveform Lidar Data
Given sufficient data storage capacity, today’s full-waveform LiDAR systems are able to record and store the entire laser pulse echo signal. This provides the possibility of further analyzing the physical characteristics of the reflecting objects. However the size of the captured data is enormous and currently not practical. Thus arises the need for compressing the waveform data. We have develo...
متن کاملClassifying Compressed Lidar Waveform Data
Full waveform recording is becoming increasingly affordable and, consequently, available in today's state-of-the-art LiDAR systems. Therefore, there is no practical limitation to the complexity of pulse detection and other methods that can be applied in post-processing mode. Analyzing the entire return signal, the full waveform can provide additional geometrical and physical information about t...
متن کاملLe développement de LiDAR satellitaire multifonctions. Analyse exploratoire du potentiel de capteurs LiDAR pour le suivi altimétrique et bathymétrique des surfaces en eau continentales et côtières
Possessing accurate, spatial and current data on the water levels and the depths are necessary for anticipation and better management of coastal and continental waters. Among the remote sensing techniques to monitor the water bathymetry and altimetry, the LIDAR appears as an adapted and promising technique, already proven on airborne platforms, because of its potential accuracy, spatial resolut...
متن کاملLand Cover Classification from Full-waveform Lidar Data Based on Support Vector Machines
In this study, a land cover classification method based on multi-class Support Vector Machines (SVM) is presented to predict the types of land cover in Miyun area. The obtained backscattered full-waveforms were processed following a workflow of waveform pre-processing, waveform decomposition and feature extraction. The extracted features, which consist of distance, intensity, Full Width at Half...
متن کامل