Lidar Point Cloud Segmentation

A Novel Framework for Processing Terrestrial Lidar Data
Terrestrial Lidar data has great potential to produce measurements for as-built building information modelling (BIM). Unfortunately, processing hundreds of millions of points, often contaminated by substantial noise, can be tedious and time-consuming. This article describes normal variation analysis (Norvana) segmentation – an automatic method that can segment large terrestrial Lidar point clouds containing hundreds of millions of points within minutes. Thanks to the high speed, point density and accuracy of modern terrestrial laser scanning (TLS), as-built BIM can be conducted with a high level of detail. But TLS captures not only useful geometric information but also unwanted objects, such as... (read more)
2019-05-10 02:00:42

Pointfuse Laser Scanning Software Set to Transform Digital Construction Workflows

Pointfuse has released the latest version of its advanced point cloud processing software that converts the millions of individual measurements captured by laser scanning and photogrammetry. Featuring new streamlined classification to ensure maximum efficiency and multicore processing for unlimited conversion power, the new version of Pointfuse is set to transform workflows within digital construction, facilities management and virtual design applications. “Pointfuse is designed to make the use of point cloud data more accessible by removing many of the traditional barriers to use,” commented Mark Senior, regional sales director at Pointfuse. “Obstacles such as processing time and computer power, incompatibility within... (read more)
2019-08-20 10:40:47

Pointfuse Showcases New Scan-to-BIM Workflow at Digital Construction Week

At this year's Digital Construction Week, Pointfuse demonstrated a new scan-to-BIM workflow, aimed at bringing reality capture to building information modelling (BIM) and virtual design and construction (VDC) practitioners. Pointfuse software converts the millions of individual measurements captured by laser scanning and photogrammetry into usable 3D mesh models. The ability to classify objects within Pointfuse, both automatically and manually, has had a huge impact on how as-built data is used within the construction workflow.   New features also on show at Digital Construction Week, which took place from 16-17 October at Excel, London, included streamlined classification to ensure maximum efficiency and... (read more)
2019-10-22 01:03:28

3D Modelling for Construction

This article introduces topics on the state of the art comparing photogrammetry and Lidar for 3D modelling for construction. The advantages and disadvantages of both will be highlighted in terms of accuracy, complexity and cost. Breaking away from laser measurement in construction is a taboo subject perhaps hampering the use of photogrammetry. In construction aerial survey has enormous time saving benefits for measuring groundwork areas. Data can be used for asset classification, construction validation as well as health and safety. In particular regular scans provide a time series of work in progress to detect new issues, managing risk rather than... (read more)
2019-10-15 03:28:52

James Crawford

James Crawford is a research associate at Ordnance Survey currently working in Singapore. He has worked at OS since 2007 in various capacities and has successfully delivered improvements relating to core geospatial information processing, data standards and development activities. (read more)
2018-07-11 10:43:49

FARO Introduces 3D Lidar Solutions for AEC Industry

FARO, one of the leading companies in 3D imaging solutions for construction BIM, has showcased an innovative set of 3D solutions specifically developed for AEC professionals at Intergeo 2019 in Stuttgart, Both solutions will be formally announced and available soon. As 3D laser scanning – also known as Lidar – becomes more ubiquitous across various industries, there is an ever increasing need to make the scanning process and data processing more efficient. Conventionally, this has been addressed with a variety of mobile mapping solutions. However, these solutions typically have limitations in terms of accuracy and data fidelity. Kinematic 3D scans According... (read more)
2019-09-24 10:20:50

Home Renovation Made Easy with Handheld 3D Scanning

As residential real estate prices continue to climb in many parts of the United States, property owners are increasingly investing in renovations and additions to their existing homes. To meet the demand, architects seek digital as-built documentation of the structures, so they can design the new construction. Many are asking for mobile 3D scanning by name as the technology they prefer to quickly capture the accurate, comprehensive as-built detail needed to start the design work. Business is booming for Precision Property Measurements (PPM), a Long Beach, California, firm that has provided as-built documentation services to Architecture, Engineering and Construction (AEC)... (read more)
2019-09-10 09:59:42

Topcon Unveils New Technology Advancements in Inspection and Monitoring

Topcon Positioning Group has announced advancements in its inspection and monitoring portfolio designed to ensure longer term health of buildings and infrastructure assets. Among the improvements announced at Intergeo 2019 include new flight planning software for the Topcon rotary-wing UAV; mass data photogrammetry processing integration capabilities, as well as the release of Delta Link version two, the new command console for the Topcon construction and structural health monitoring system. “Inspection, assessment and monitoring (IAM) is a crucial cycle to ensure the integrity of building assets. Topcon IAM solutions help to keep assets in operation, providing intuitive tools for site engineers... (read more)
2019-09-23 10:06:59

Hyperspectral Imaging to Analyse Building Material Strengths

A recent study has shown that, with proper post-processing of the data, hyperspectral imaging can automatically and reliably detect weak from strong hardened concrete and normally fired bricks, all without any destructive testing or direct contact with the materials. This technology will help civil engineers and developers rapidly analyse the integrity of construction materials and assist with the documentation, preservation and restoration of historical structures, as well as the asset management of infrastructure. Professor Debra Laefer from NYU’s Center for Urban Science and Progress (CUSP), in collaboration with Professor Aoife Gowen and Zohreh Zahiri from the University College Dublin, recently demonstrated... (read more)
2018-09-05 11:15:38

Rapid Site Surveys Using SLAM Technology

Access All Areas: Geomatics Systems for the Future
The difficulties of undertaking geospatial surveys, particularly within unstable buildings or underground environments, are well documented. However, the pressure to collect accurate, real-time data within strict timelines has certainly intensified in recent years. With increasingly tight deadlines coupled with strict budgets, conducting surveys of hard-to-access sites can be a real challenge for engineering and construction firms. In this article, Stuart Cadge from indoor mobile mapping specialist GeoSLAM explains how new innovations in building information modelling (BIM) are providing an answer with the aid of simultaneous localisation and mapping (SLAM) technology. As engineering and construction firms grapple with issues such as... (read more)
2018-10-24 04:26:50
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