Results 31 to 40 of about 177,323 (293)
A Hand-held Laser Scanner based on Multi-camera Stereo-matching [PDF]
, 2012 Most laser scanners in engineering are extended versions of tactile measuring machines. These high precision devices are typically very expensive and hardware modifications are not possible without impairing the precision of the device.
Bender, Christoph +4 more
core +1 more source
JOINT CALIBRATION OF 3D LASER SCANNER AND DIGITAL CAMERA BASED ON DLT ALGORITHM [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 Design a calibration target that can be scanned by 3D laser scanner while shot by digital camera, achieving point cloud and photos of a same target. A method to joint calibrate 3D laser scanner and digital camera based on Direct Linear Transformation ...
X. Gao, M. Li, L. Xing, Y. Liu
doaj +1 more source
Data, 2020 In forest inventory, trees are usually measured using handheld instruments; among the most relevant are calipers, inclinometers, ultrasonic devices, and laser range finders.
Christoph Gollob +2 more
doaj +1 more source
Integrated Georeferencing of LiDAR and Camera Data Acquired from a Moving Platform [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014 This paper presents an approach for modeling the trajectory of a moving platform equipped with a laser scanner and a camera. In most cases, GNSS and INS is used to determine the orientation of the platform, but sometimes it is impossible to use GNSS ...
F. Liebold, H.-G. Maas
doaj +1 more source
Comparing Three Different Ground Based Laser Scanning Methods for Tree Stem Detection
Remote Sensing, 2018 A forest inventory is often carried out using airborne laser data combined with ground measured reference data. Traditionally, the ground reference data have been collected manually with a caliper combined with land surveying equipment.
Ivar Oveland +4 more
doaj +1 more source
Measurement of 3D Space Using a 2D Profilograph [PDF]
Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2016 This article proposes a method how to create a measurement system which can be used as a terrestrial laser scanner. The system utilizes laser scanner LD-OEM 1000.
Marián HRUBOŠ +4 more
doaj +1 more source
The survey of the Basilica di Collemaggio in L’Aquila with a system of terrestrial imaging and most proven techniques [PDF]
, 2017 The proposed job concerns the evaluation of a series of surveys carried out in the context of a campaign of studies begun in 2015 with the objective of comparing the accuracies obtainable with the systems of terrestrial imaging, compared to unmanned ...
Allegra, Massimo +5 more
core +2 more sources
Optimising Mobile Mapping System Laser Scanner Orientation
ISPRS International Journal of Geo-Information, 2015 Multiple laser scanner hardware configurations can be applied to Mobile Mapping Systems. As best practice, laser scanners are rotated horizontally or inclined vertically to increase the probability of contact between the laser scan plane and any surfaces
Conor Cahalane +3 more
doaj +1 more source
한국해양공학회지, 2018 This paper proposes a vision-based underwater laser scanner with separate structures for an underwater camera and a line laser projector. Because the two devices can be adaptively placed regardless of the features of the unmanned underwater vehicle (UUV),
Yeongjun Lee +4 more
doaj +1 more source
Investigation in optimisation of accuracy with non-contact systems by influencing variable processes [PDF]
, 2019 The use of 3D scanning systems is becoming increasingly popular and an essential tool for manufacturers for inspection and measurement. With such systems being utilised on the manufacturing shop floor due to their portability and ease of use, it is no ...
Gashi, Bekim V. +3 more
core +1 more source