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LOW-COST 3D DEVICES AND LASER SCANNERS COMPARISON FOR THE APPLICATION IN ORTHOPEDIC CENTRES
Low-cost 3D sensors Biomedical applications 3D Metrology Resolution Systematic error
2018/6/4
Low-cost 3D sensors are nowadays widely diffused and many different solutions are available on the market. Some of these devices were developed for entertaining purposes, but are used also for acquisi...
On-line processing of stereo data ofCCD Line Scanners
Online processing CCD Line Scanner Ster eo
2016/5/20
There are two main reasons for a data processing concept a ll owing an au tomatic processing of image data of CCD se n-
sors without operators in to different products, e.g. digital terrain models.
Photogrammetric scanners-survey, technological developments and requirements
Scanner Technology Photogrammetric Scanner Requirements
2016/5/20
Scanners are necessary for retrieving digital information from analogue imagery. In the context of this paper, scanners as input devices
for softcopy photogrammetric systems, which ask for high radio...
While 3-D printers have become relatively cheap and available, 3-D scanners have lagged well behind. Now an algorithm developed by Brown University researchers may help bring high-quality 3-D scanning...
An Analysis of Crowds Flow Characteristics by Using Laser Range Scanners
Laser scanning Sensor Computer Vision
2015/12/17
Recently, according to growth and concentration of population in urban area, congested situations at several railway stations in rush
hour become a serious social issue. Therefore, designing the stat...
Estimation of Opto-Mechanical Parameters for Calibration of Laser Scanners
calibration terrestrial laser scanner ray tracing Accuracy coordinate system adjustment
2015/12/8
Within this paper an approach of calibration for a terrestrial laser scanner with two mirrors driven by two galvanometers is presented. This includes a mathematical model for the interior of the laser...
Indoor Navigation by Using Segmentation of Range Images Obtained by Laser Scanners
laser scanning localization mapping navigation robotics segmentation tracking
2015/11/23
This paper proposes a method to reconstruct the trajectory of a moving laser scanner on the basis of indoor scans made at different positions. The basic idea is that a position with respect to a measu...
Radiometric Calibration of Full-Waveform Small-Footprint Airborne Laser Scanners
Laser scanning Lidar Calibration Radiometry Point Cloud Classification
2015/11/20
Small-footprint airborne laser scanners (ALS) are lidar instruments originally developed for topographic mapping. In recent years ALS sensors are increasingly used also in other applications (forest m...
ON-SITE SELF-CALIBRATION USING PLANAR FEATURES FOR TERRESTRIAL LASER SCANNERS
Calibration Systematic error Planar targets Laser Scanning
2015/11/10
Terrestrial laser scanners provide a three-dimensional sampled representation (i.e. point cloud) of the surfaces of objects. They have great potential to improve the measurement and representation of ...
TERRESTRIAL LASER SCANNERS SELF-CALIBRATION STUDY: DATUM CONSTRAINTS ANALYSES FOR NETWORK CONFIGURATIONS
Terrestrial laser scanner self-calibration network configuration datum constraints
2015/11/3
Similar to other electronic instruments, terrestrial laser scanner (TLS) can also inherent with various systematic errors coming from different sources. Self-calibration technique is a method availabl...
Comparison of photogrammetric applications based on narrow angle line scanners with traditional photogrammetric methods
line scanner camera accuracy orthoimage height models
2015/9/2
By the Pegasus project digital line scanner images taken from an elevation of 20km, with a ground sampling distance (GSD) of
20cm, will be available. The photogrammetric use of such images is compare...
Autonomous calibration of moving line scanners with coded photogrammetric targets recognition
line scanner calibration position tracking coded targets convincedness segmentation
2015/8/24
In this paper, we describe an automatic approach for a terrestrial line scanner calibration. The system is calibrated with prior knowledge of the exterior orientation of the camera in an unknown coord...
NEW CALIBRATION SCHEME FOR PANORAMIC LINE SCANNERS
Line-Scanner Calibration Diffractive Optical Elements Spatial Light Modulator
2015/7/31
In the DLR department of optical information technology exists long experience and practical knowledge in geometrical calibration of opto-elctronical systems especially CCD-line scanners. An approved ...
Color Calibration of Scanners using Polynomial Transformation
scanner calibration color theory
2015/7/15
Digital imaging is a rapid growing area with the developments in computer technology. Digital color use has become a conventional
tool in many disciplines, such as cartography remote sensing and phot...
Automated Registration of Unorganised Point Clouds From Terrestrial Laser Scanners
Registration Automation Three-dimensional
2015/7/14
Terrestrial laser scanners provide a three-dimensional sampled representation of the surfaces of objects resulting in a very
large number of points. The spatial resolution of the data is much higher ...