GIM International: May-June 2020

GIM International May-June 2020 cover

Today's geospatial technology means that land administration systems can increasingly be implemented for the benefit of all. This issue of GIM International has a special focus on land management and the role of the mapping and surveying profession in this field. 

This issue contains the following articles:

- Integrating UAV-based Lidar and Photogrammetry
- How 3D Scanning Rebuilds Crime Scenes for Courtrooms
- The Anatomy of Corruption in Land Management
- Fit-for-purpose Land Administration for All
- Mapping the Yangtze River
- Modernization of Suriname's Public Domain Cadastre
- The Evolution of FLEPOS 3.0

UAV-based Lidar and Photogrammetry

Integrating UAV-based Lidar and PhotogrammetryRecent unmanned aerial vehicle (UAV or ‘drone’) platforms jointly collect imagery and Lidar data. Their combined evaluation potentially generates 3D point clouds at accuracies and resolutions of some millimetres, so far limited to terrestrial data capture. This article outlines a project that integrates photogrammetric bundle block adjustment with direct georeferencing of Lidar point clouds to improve the respective accuracy by an order of magnitude. Further benefits of combined processing result from adding Lidar range measurement to multi-view-stereo (MVS) image matching during the generation of high-precision dense 3D point clouds. Read on...

Suriname's Cadastre

Modernization of Suriname's Public Domain CadastreIn 2017, Suriname’s Ministry of Land Management decided to digitize and automate the process of citizen requests for land and the management of land, which had mainly been paper-based for the past decades. This article outlines how the approach of consciously addressing technical and cultural aspects in combination with modernizing the public-domain land administration in Suriname has enabled significant results. Read on...

Evolution of FLEPOS 3.0

The Evolution of FLEPOS 3.0A continuously operating reference stations (CORS) provides GNSS data to support very accurate 3D positioning and additional geophysical applications. Flemish Positioning Services (FLEPOS) is the real-time global navigation satellite system (GNSS) CORS network for the Flanders region in northern Belgium. This article outlines the evolution of the next generation of the real-time network, FLEPOS 3.0. Read on...

How 3D Scanning Rebuilds Crime Scenes

How 3D Scanning Rebuilds Crime Scenes for CourtroomsCrime scene investigators with larger US metropolitan police departments and state patrols are increasingly deploying 3D laser scanners to tell detailed, data-based stories that will withstand public and legal scrutiny while bringing justice to victims. 3D laser scanning technology is being used to accurately depict the relational aspect of each piece of evidence so investigators can rebuild and reconstruct crime scenes. This is a powerful investigation tool, especially as legal systems grow more comfortable with high-tech evidence in courtrooms. Read on...

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