Implementation of Spatial Information for Monitoring and Analysis of the Area Around the Port Using Laser Scanning Techniques

Abstract

Nowadays, maritime infrastructure is heavily exploited, which requires monitoring. The article presents the implementation of spatial information which are point clouds for monitoring and analysis of the area around the port (buildings and wharves). For this study, point clouds coming from terrestrial (TLS) and airborne laser scanning (ALS), each of them having different accuracy, were used. An important part of the analysis was the integration of the two data sources. Through integration, the acquisition of information on areas not covered by the measurement in the presented case, one of the methods was possible for use (e.g. the roofs in case of TLS, or the lack of some of the walls of buildings in case of ALS).Another aspect was to use this data. Measurement of the shape and geometry of objects was executed. Additionally, the planeness analysis of individual elements of port infrastructure has been carried out. An interesting analysis was to determine the water level, based on relation to specific characteristics of the light reflectance.

The circle object detection with the use of Msplit estimation

“…3), i = 1050 points data was assumed. Points (xi,yi) can be interpreted as the creation of 7 functional models in the form of circle equations (8). Three of these circles were overlaid on each, in order to test the reliability of the algorithm to the penetrate results of functional models (Fig.…”

“…The spatial and topological relations obtained in this way can be used to gain knowledge about the study space as well as to perform analyses based on them such as [8][9][10][11]. The modelling process compared to the measurement process is more time consuming and demanding from operator's point of view.…”

Searching for road deformations using mobile laser scanning

“…To exactly indicate places with cracks and ruts, the values of the amplitude must be estimated which are not affected by the traffic [15]. Fig.…”

Bus bays inventory using a terrestrial laser scanning system

“…In addition to ranging, Light Detection and Ranging systems can provide information about the target and transmission path [4]. In that option we could indicate the lanes and measure the geometry of every pavement type.…”