Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Mobile mapping"”.
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Calculating and Assessing Mobile Mapping System Point Density for Roadside Infrastructure Surveys
The current generation of Mobile Mapping Systems (MMSs) capture increasingly larger amounts of data in a short time frame. Due to the relative novelty of this technology there is no concrete understanding of the point density that different scanner confgurations and scanner hardware settings will …
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Wide-angle Lens Camera Calibration using Automatic Target Recognition
… of the Ladybug5 multi-camera system into a Mobile Mapping System. To calibrate this system an efficient and accurate automatic target recognition methodology that could work with a multi-camera system was needed. This automatic target recognition methodology was developed and works by …
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Large Scale Acquisition of Complex Environments by Data Fusion from Mobile Visual and Depth Sensors
… and visual scanning technology. This innovative mobile mapping system (MMS) is designed to capture complex man-made structures in diverse settings, ranging from indoor spaces to challenging outdoor environments and underground settings. The MMS combines high-resolution photographic data with …
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Développement d'une nouvelle plateforme de cartographie mobile avec images de haute résolution et numérisation LiDAR en 3D
… c'est le domaine des systèmes de cartographie mobiles ( en anglais : Mobile Mapping Systems (MMS). Leur rôle fondamental est de collecter des données géographiques à partir d'un terrain en combinant plusieurs types de données tels que : les données de navigation globale GNSS, les données de …
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Leveraging Autonomous Vehicles In Transportation Asset Management
… current field inventory, image-log, street-view, mobile mapping, and computer vision methods may be limited when agencies need to update sign records across roadway networks under practical data collection and processing requirements. This limitation makes it difficult to convert ordinary roadway …
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Geometric accuracy evaluation of mobile terrestrial LIDAR surveys with supporting algorithms
<p>Mobile Mapping System (MMS) technology is widely used for many applications, hence quantifying its accuracy is a very important and essential task and is a primary focus of this research. In general, to perfrom geometric accuracy evaluation of MMS data, validation points/features are needed. A …
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Visible communities : designing a socio-spatial map
… presents a collaborative human-machine crowdmapping approach to creating socio-spatial maps that represent both spatial and social aspects of communities. Our implemented system combines satellite image analytics, a mobile mapping app, and social survey data. The system is designed to provide …
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Automatic derivation of schematic maps from large scale digital geographic datasets for mobile GIS
"Mapping is a way of visualizing parts of the world and maps are largely diagrammatic and two dimensional. There is usually a one-to-one correspondence between places in the world and places on the map, but while there are limitless aspects to the world, the cartographer can only select a few to …
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Automatic Registration of Imagery to Mobile LiDAR Maps
Mapping in 3D that records geospatial data from platform-mounted sensors with digital twinning supports maintenance and future planning of civil infrastructure. Three-dimensional mapping is efficiently performed with a Mobile Mapping System (MMS). This research demonstrates camera-only registration …
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Enhancing the Resolution and Predicting the Accuracy of Point Clouds Generated by Handheld 3D Scanners in Construction
… for post-processing tasks. However, existing mobile mapping devices are limited in their ability to produce accurate and high-resolution point clouds as compared to terrestrial laser scanners. The primary objective of this thesis is to formulate, implement, and evaluate two methods designed to …
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Feature Extraction Workflows for Urban Mobile-Terrestrial LiDAR Data
Mobile Terrestrial LiDAR (MTL) is an active remote sensing technology that uses laser-based ranging and global positioning systems (GPS) to record 3D point location measurements on surfaces within and near transportation corridors, such as along a railroad track or a street. This thesis examines …