Monitoring Capabilities of a Mobile Mapping System Based on Navigation Qualities

Abstract

ABSTRACT:Mobile mapping systems are becoming increasingly popular as they can build 3D models of the environment rapidly by using a laser scanner that is integrated with a navigation system. 3D mobile mapping has been widely used for applications such as 3D city modelling and mapping of the scanned environments. However, accurate mapping relies on not only the scanner's performance but also on the quality of the navigation results (accuracy and robustness) . This paper discusses the potentials of using 3D mobile mapping systems for landscape change detection, that is traditionally carried out by terrestrial laser scanners that can be accurately geo-referenced at a static location to produce highly accurate dense point clouds. Yet compared to conventional surveying using terrestrial laser scanners, several advantages of mobile mapping systems can be identified. A large area can be monitored in a relatively short period, which enables high repeat frequency monitoring without having to set-up dedicated stations. However, current mobile mapping applications are limited by the quality of navigation results, especially in different environments. The change detection ability of mobile mapping systems is therefore significantly affected by the quality of the navigation results. This paper presents some data collected for the purpose of monitoring from a mobile platform. The datasets are analysed to address current potentials and difficulties. The change detection results are also presented based on the collected dataset. Results indicate the potentials of change detection using a mobile mapping system and suggestions to enhance quality and robustness.

Evaluation of Long-Range Mobile Mapping System (MMS) and Close-Range Photogrammetry for Deformation Monitoring. A Case Study of Cortes de Pallás in Valencia (Spain)

“…This work demonstrates its usefulness for data acquisition and mapping purposes, presenting similarities with the case studies described in [3,13], referring to the hand-held use of MMS. Indeed, we have been able to manage the occlusions, which are unavoidable from the photogrammetric model.…”

“…A 3D mapping was carried out by an airborne MMS, installed on a helicopter, to monitor a small landslide in the North Yorkshire coast in the UK. As a result, more accurate modeling of the terrain was obtained, especially areas covered by vegetation [13]. A ground-based approach was evaluated by James et al [5] using a handheld MLS to collect topographic data in complex terrain as a gully site at the coastal cliff in Sunderland, UK.…”

Absolute Positioning and Orientation of MLSS in a Subway Tunnel Based on Sparse Point-Assisted DR

“…The accuracy and precision of point clouds obtained by using MLSS is affected by many factors, the most important of which is the accuracy of the POS [14]. A pure inertial navigation system (INS) has the disadvantage of error accumulation [15]. Generally, a combination of multiple navigation technologies is used to overcome the shortcomings of a single navigation technique.…”