A New Approach to the Uncertainty in Diameter Measurement Using Laser Scanning Instrument

2014 ◽  
pp. 463-470
Author(s):  
Ryszard Jablonski ◽  
Pawel Fotowicz
Keyword(s):  
Laser Scanning ◽  
Diameter Measurement ◽  
New Approach

Laser scanning system for large diameter measurement

2009 ◽  
Author(s):  
Liang Chen ◽  
Shuqin Zhang ◽  
Shangzhong Ji ◽  
Benkang Chang ◽  
Jun Yu
Keyword(s):  
Laser Scanning ◽  
Large Diameter ◽  
Scanning System ◽  
Diameter Measurement ◽  
Laser Scanning System

scholarly journals Reduction Method for Mobile Laser Scanning Data

2018 ◽  
Vol 7 (7) ◽  
pp. 285 ◽  
Author(s):  
Wioleta Błaszczak-Bąk ◽  
Zoltan Koppanyi ◽  
Charles Toth
Keyword(s):  
Data Reduction ◽  
Point Cloud ◽  
Laser Scanning ◽  
Digital Terrain Model ◽  
New Approach ◽  
Terrain Model ◽  
Digital Terrain ◽  
Airborne Laser ◽  
Short Time ◽  
Mls Method

Mobile Laser Scanning (MLS) technology acquires a huge volume of data in a very short time. In many cases, it is reasonable to reduce the size of the dataset with eliminating points in such a way that the datasets, after reduction, meet specific optimization criteria. Various methods exist to decrease the size of point cloud, such as raw data reduction, Digital Terrain Model (DTM) generalization or generation of regular grid. These methods have been successfully applied on data captured from Airborne Laser Scanning (ALS) and Terrestrial Laser Scanning (TLS), however, they have not been fully analyzed on data captured by an MLS system. The paper presents our new approach, called the Optimum Single MLS Dataset method (OptD-single-MLS), which is an algorithm for MLS data reduction. The tests were carried out in two variants: (1) for raw sensory measurements and (2) for a georeferenced 3D point cloud. We found that the OptD-single-MLS method provides a good solution in both variants; therefore, the choice of the reduction variant depends only on the user.

A Novel Method of Diameter Measurement by Laser Scanning Based on Flat-Crystal

2011 ◽  
Vol 467-469 ◽  
pp. 1604-1609 ◽  
Author(s):  
Yi Wang ◽  
Yong Jie Ren ◽  
Chang Jie Liu ◽  
S.H. Ye
Keyword(s):  
Measurement Error ◽  
Theoretical Analysis ◽  
High Precision ◽  
Laser Scanning ◽  
Propagation Direction ◽  
Diameter Measurement ◽  
Measurement Device ◽  
The Core ◽  
Scanning Beam ◽  
Novel Method

A novel diameter measurement device by laser scanning of which a flat-crystal was used as the core scanning part was designed. The device can generate high parallel scanning beam by means of the property that a beam won’t change its propagation direction after transmitting a flat-crystal. The influences on measurement error and range by using flat-crystal were analyzed in details. Theoretical analysis showed that the method was easy to realize and achieve high precision.

A new approach to recording and monitoring wet-preserved archaeological wood using three-dimensional laser scanning

2010 ◽  
Vol 37 (12) ◽  
pp. 2995-2999 ◽  
Author(s):  
Michael Lobb ◽  
Kristina Krawiec ◽  
Andy J. Howard ◽  
Benjamin R. Gearey ◽  
Henry P. Chapman
Keyword(s):  
Laser Scanning ◽  
Three Dimensional ◽  
New Approach ◽  
Archaeological Wood

scholarly journals Development of an advanced diagnostic concept for intestinal inflammation: molecular visualisation of nitric oxide in macrophages by functional poly(lactic-co-glycolic acid) microspheres

2017 ◽  
Vol 8 ◽  
pp. 1637-1641
Author(s):  
Kathleen Lange ◽  
Christian Lautenschläger ◽  
Maria Wallert ◽  
Stefan Lorkowski ◽  
Andreas Stallmach ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Laser Scanning ◽  
Glycolic Acid ◽  
Intestinal Inflammation ◽  
Laser Scanning Microscopy ◽  
Hydrodynamic Diameter ◽  
New Approach ◽  
Early Evaluation ◽  
Griess Reaction ◽  
No Release

We here describe a new approach to visualise nitric oxide (NO) in living macrophages by fluorescent NO-sensitive microspheres based on poly(lactic-co-glycolic acid) (PLGA). PLGA microspheres loaded with NO550 dye were prepared through a modified solvent-evaporation method. Microparticles were characterized by a mean hydrodynamic diameter of 3000 nm, zeta potential of −26.000 ± 0.351 mV and a PDI of 0.828 ± 0.298. Under abiotic conditions, NO release was triggered through UV radiation (254 nm) of 10 mM sodium nitroprusside dehydrate (SNP). After incubation, AZO550 microspheres exhibited an about 8-fold increased emission at 550 nm compared to NO550 particles. For biotic NO release, RAW 264.7 murine macrophages were activated with lipopolysaccharide (LPS) of Salmonella typhimurium. After treatment with NO550 microparticles, only activated cells caused a green particle fluorescence and could be detected by laser scanning microscopy. NO release was confirmed indirectly with Griess reaction. Our functional NO550 particles enable a simple and early evaluation of inflammatory and immunological processes. Furthermore, our results on particle-based NO sensing and previous studies in targeting intestinal inflammation via (PLGA)-based microspheres demonstrate that an advanced concept for visualizing intestinal inflammation is tangible.

Using Confocal Laser Scanning Microscopy to Study an Ambers, a New Approach

2019 ◽  
Vol 806 ◽  
pp. 197-202
Author(s):  
Alexander Mikhailovich Zakharenko ◽  
Igor Yurevich Chekryzhov ◽  
Kirill Sergeevich Golokhvast
Keyword(s):  
Confocal Laser Scanning Microscopy ◽  
Laser Scanning ◽  
Far East ◽  
Laser Scanning Microscopy ◽  
Confocal Laser Scanning ◽  
Scanning Microscopy ◽  
Confocal Laser ◽  
Northern Spain ◽  
New Approach ◽  
Laser Bleaching

Currently, in the scientific literature, there is no a sole opinion on mechanisms governing phenomenon of blue amber. In specimens sampled in Dominican Republic it is caused by presence of perylene; whereas, specimens sampled in northern Spain this has not been confirmed. We have obtained specimens from a third, earlier not studied, source of blue amber in the Far East of Russia that was described in 2015. This sample was investigated with a laser confocal microscopy and a laser bleaching studies. We found fluorescence pattern that is typical for perylene and bleaching showed rapid diffusion that is consistent with the perylene hypothesis. Moreover we demonstrate that confocal laser scanning microscopy could be successfully used for rapid search of the organisms in the dark part of the amber samples.

scholarly journals Maritime Laser Scanning as the Source for Spatial Data

2015 ◽  
Vol 22 (4) ◽  
pp. 9-14 ◽  
Author(s):  
Jakub Szulwic ◽  
Paweł Burdziakowski ◽  
Artur Janowski ◽  
Marek Przyborski ◽  
Paweł Tysiąc ◽  
...  
Keyword(s):  
Spatial Data ◽  
Geographical Information Systems ◽  
Laser Scanning ◽  
Rapid Development ◽  
Unmanned Vehicles ◽  
Geographical Information ◽  
New Approach ◽  
New Perspective ◽  
The Baltic ◽  
Maritime Environment

Abstract The rapid development of scanning technology, especially mobile scanning, gives the possibility to collect spatial data coming from maritime measurement platforms and autonomous manned or unmanned vehicles. Presented solution is derived from the mobile scanning. However we should keep in mind that the specificity of laser scanning at sea and processing collected data should be in the form acceptable in Geographical Information Systems, especially typical for the maritime needs. At the same time we should be aware that data coming from maritime mobile scanning constitutes a new approach to the describing of maritime environment and brings a new perspective that is completely different than air and terrestrial scanning. Therefore, the authors, would like to present results of an experiment aimed at testing the possibilities of using mobile scanning at sea. Experiment was conducted in the harbour and the associated environment of neighbouring southern coast of the Baltic Sea.

Sign in / Sign up

Export Citation Format

Share Document