- published: 29 Sep 2014
- views: 27256
Lidar (also written LIDAR, LiDAR or LADAR) is a surveying technology that measures distance by illuminating a target with a laser light. Although thought by some to be an acronym of Light Detection And Ranging, the term lidar was actually created as a portmanteau of "light" and "radar". Lidar is popularly used as a technology to make high-resolution maps, with applications in geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, airborne laser swath mapping (ALSM) and laser altimetry. What is known as Lidar is sometimes simply referred to as laser scanning or 3D scanning, with terrestrial, airborne and mobile applications.
Lidar originated in the early 1960s, shortly after the invention of the laser, and combined laser-focused imaging with radar's ability to calculate distances by measuring the time for a signal to return. Its first applications came in meteorology, where the National Center for Atmospheric Research used it to measure clouds. The general public became aware of the accuracy and usefulness of lidar systems in 1971 during the Apollo 15 mission, when astronauts used a laser altimeter to map the surface of the moon.
Workflow process for the FARO Focus X330 to FARO SCENE and Webshare Cloud 1.6, including new software features. This video shows the scanning with the FARO Focus3D, data processing with FARO Scene. The results can be shared worldwide with WebShare Cloud. More info about WebShare Cloud: http://www.faro.com/products/faro-software/scene-webshare-cloud/overview More info about Software Scene http://www.faro.com/products/faro-software/scene/overview More info about FARO Laser Scanner FARO Focus3D http://www.faro.com/products/3d-surveying/laser-scanner-faro-focus-3d/overview
Low Cost 360 Degree Laser Range Scanner 4000 samples/s 10Hz Range: 6m Rotation speed: 600 RPM Resolution: 0.9° Requires at least 1.5A@5V
The FARO Focus3D is a high-speed Terrestrial Laser Scanner (TLS) offering the most efficient method for 3D measurement and 3D image documentation. In only a few minutes, this 3D laser scanner produces dense point clouds containing millions of points that provide incredibly detailed 3D colour images of large scale geometries. Multiple scans from different positions can then be automatically placed to create a cohesive point cloud, resembling an exact measureable copy of even the most complex and large structures. Download the brochure and tech sheet: http://www.faro.com/products/3d-surveying/laserscanner-faro-focus-3d/downloads Request a quote: http://www.faro.com/about-faro/contact/quote-request Request an On-Site Product Demonstration: http://www.faro.com/about-faro/contact/demo-reque...
This is an example of what can be done with a point cloud which is produced by laser scanning from a tripod based equipment. LiDAR means: "Light Detection and Ranging" which is very similar to RADAR "Radio Detection and Ranging" but light waves are much faster and much smaller than radio waves and therefore the results are quite a bit more accurate, i.e. +/- 2mm accurate.
This is a video submission for entry into the Kalie Prize, a hardware innovation competition hosted by the Zahn Innovation Center. The video pitches the concept of a general purpose scanner suitable for LIDAR systems (think Radar but using light; the scanner is a combination of hardware and software that will automatically steer the beam in multiple directions). Currently LIDAR vendors only sell complete systems and there is no vendor in this space. We have seen a lot of researchers leveraging off-the-shelf telecom equipment and we believe our solution fills a need for that niche market.
3D Laser Scanning ( Combination of Lidar and Terrestrial laser Scanning Data)
Zebedee is a handheld 3D mobile mapping system developed at CSIRO. The primary sensor is a 2D Hokuyo lidar scanner which measures the distances to surfaces in the environment (43200 samples per second). A simple spring mechanism is used to convert the natural motion of the operator into scanning sweeps that result in a 3D field of view. CSIRO's specialized software interprets the raw data to estimate the motion of the scanner and generate a 3D point cloud model of the environment. As seen in the video, the system is capable of large-scale mapping of a wide variety of environments ranging from built to natural scenes. Typically, the time it takes to map an environment is the time it takes to walk through it. For visualization purposes, the point clouds shown in this video contain only 9 p...
Demo video of a LiDAR UAV drone (type Riegl RiCOPTER with VUX-SYS) with UAV-based Laser Scanning Applications with specs. It is able to scan data reflectance scaled, colorized by target classification, produce digital terrain models, slice of scan data, showing e.g. historical walls underneath dense vegetation. The LiDAR UAV drone is available for research by anyone interested. Please contact Shared Research Facilities of Wageningen University and Research.
Fly over of 73 freeway and the MSE wall near Costco in Laguna Niguel, CA. Post construction monitoring initial scan.
LiDAR Viewer (http://idav.ucdavis.edu/~okreylos/ResDev/LiDAR, http://doc-ok.org/?p=432) is an out-of-core, multi-resolution, view-dependent interactive visualization and analysis software for massive (tens of billions of points) LiDAR (Light Detection and Ranging, large-extent 3D laser scanning) data. LiDAR Viewer allows seamless visualization of data sets many times the size of the computer's main memory, and provides measurement and feature extraction / analysis tools to perform scientific or engineering field work in a virtual environment. LiDAR Viewer is an immersive application aimed at high-end holographic displays like CAVEs, but it also works in low-cost VR environments (http://idav.ucdavis.edu/~okreylos/ResDev/LowCostVR) or on normal desktop or laptop PCs, as shown in this video....