Instantaneous Measurement of 3D Profiles by Projecting Coded Grating

2005 ◽  
Vol 295-296 ◽  
pp. 495-500
Author(s):  
A.L. Tian ◽  
B. Li ◽  
M.T. Huang ◽  
Zhuang De Jiang
Keyword(s):  
Data Processing ◽  
Measurement System ◽  
Moving Objects ◽  
Three Dimensional ◽  
Profile Measurement ◽  
3D Measurement ◽  
Human Face ◽  
Measuring Range ◽  
Data Processing Software ◽  
Processing Software

A three-dimensional profile measurement system based on a projection coded grating technique is presented. The system uses a designing and decoding technique for grey coded gratings. The coded grating has black, white and grey stripes. The period triples a conventional grating. It greatly increases the height measuring range without any decrease in stripe separation. The shape of object can be obtained from only one grating image. The system is suitable for instantaneous measurement of moving objects including human face. The technique proposed permits rapid 3D measurement and no moving parts are involved in the system. The hardware is relatively simple. Special data processing software is developed. Results of a practical example confirm the effectiveness of the proposed method.

scholarly journals Status of the neutron time-of-flight single-crystal diffraction data-processing software STARGazer

2018 ◽  
Vol 74 (11) ◽  
pp. 1041-1052 ◽  
Author(s):  
Naomine Yano ◽  
Taro Yamada ◽  
Takaaki Hosoya ◽  
Takashi Ohhara ◽  
Ichiro Tanaka ◽  
...  
Keyword(s):  
Data Processing ◽  
Single Crystal ◽  
Diffraction Data ◽  
Three Dimensional ◽  
Time Of Flight ◽  
Intensity Data ◽  
Single Crystal Diffraction ◽  
Data Processing Software ◽  
Neutron Time ◽  
Processing Software

The STARGazer data-processing software is used for neutron time-of-flight (TOF) single-crystal diffraction data collected using the IBARAKI Biological Crystal Diffractometer (iBIX) at the Japan Proton Accelerator Research Complex (J-PARC). This software creates hkl intensity data from three-dimensional (x, y, TOF) diffraction data. STARGazer is composed of a data-processing component and a data-visualization component. The former is used to calculate the hkl intensity data. The latter displays the three-dimensional diffraction data with searched or predicted peak positions and is used to determine and confirm integration regions. STARGazer has been developed to make it easier to use and to obtain more accurate intensity data. For example, a profile-fitting method for peak integration was developed and the data statistics were improved. STARGazer and its manual, containing installation and data-processing components, have been prepared and provided to iBIX users. This article describes the status of the STARGazer data-processing software and its data-processing algorithms.

The Development of Flight Test Real-Time Trajectory Measurement System

2015 ◽  
Vol 798 ◽  
pp. 329-335
Author(s):  
Hong Li He
Keyword(s):  
Data Processing ◽  
Real Time ◽  
Measurement System ◽  
Implementation Process ◽  
Flight Test ◽  
Time Measurement ◽  
Data Processing Software ◽  
Real Time Measurement ◽  
Processing Software ◽  
Trajectory Measurement

According to the feature of test requirement existed inthe flight test and measuring equipments in plane track, the flight test trajectory measurement system is builtand anomaly recognition of flight test trajectory measurement is studied intensively. For the requirement of implementation guide and monitor treatment, the data processing software of flight test real-time trajectory measurement system is designed and programmed. Algorithm model construction and implementation process are also presented in this paper. In addition,real-time measurement and guidance andmonitoring processingare realized through the program. The system has been applied to realtime monitoring of flight test,which has obtain the very good application effect.

An Acoustic System for Pipeline Profile Measurement

1983 ◽  
Vol 105 (4) ◽  
pp. 475-479
Author(s):  
H. Van Calcar
Keyword(s):  
Measurement Technique ◽  
Measurement System ◽  
Performance Enhancement ◽  
Three Dimensional ◽  
Profile Measurement ◽  
Baseline Measurement ◽  
Acoustic System ◽  
Position Measurement ◽  
Long Baseline ◽  
Hardware Configuration

This paper presents an acoustic position measurement system used for precise three-dimensional flowline profile measurement. The system measures several points along the flowline using the long-baseline measurement technique and augments this measurement with depth telemetry repeaters to maintain elevation accuracy throughout the changing installation geometry. The paper discusses both the measurement system and the performance enhancement features. The paper concludes with a discussion of the hardware configuration and the accuracy that can be expected when the technique is extended into deeper operating areas.

scholarly journals DEVELOPMENT OF A HIGH-SPEED VIDEOGRAMMETRIC MEASUREMENT SYSTEM WITH APPLICATION IN LARGE-SCALE SHAKING TABLE TEST

2019 ◽  
Vol IV-2/W7 ◽  
pp. 33-38
Author(s):  
S. Gao ◽  
Z. Ye ◽  
C. Wei ◽  
X. Liu ◽  
X. Tong
Keyword(s):  
Data Processing ◽  
Measurement System ◽  
High Speed ◽  
Large Scale ◽  
Moving Objects ◽  
Shaking Table Test ◽  
Image Sequences ◽  
Shaking Table ◽  
Dynamic Monitoring ◽  
Observation Network

<p><strong>Abstract.</strong> The high-speed videogrammetric measurement system, which provides a convenient way to capture three-dimensional (3D) dynamic response of moving objects, has been widely used in various applications due to its remarkable advantages including non-contact, flexibility and high precision. This paper presents a distributed high-speed videogrammetric measurement system suitable for monitoring of large-scale structures. The overall framework consists of hardware and software two parts, namely observation network construction and data processing. The core component of the observation network is high-speed cameras to provide multiview image sequences. The data processing part automatically obtains the 3D structural deformations of the key points from the captured image sequences. A distributed parallel processing framework is adopted to speed up the image sequence processing. An empirical experiment was conducted to measure the dynamics of a double-tube five-layer building structure on the shaking table using the presented videogrammetric measurement system. Compared with the high-accuracy total station measurement, the presented system can achieve a sub-millimeter level of coordinates discrepancy. The 3D deformation results demonstrate the potential of the non-contact high-speed videogrammetric measurement system in dynamic monitoring of large-scale shake table tests.</p>

Research on Data Process of GPS in Road Surveying

2012 ◽  
Vol 433-440 ◽  
pp. 6007-6013
Author(s):  
Wei Duo Huang
Keyword(s):  
Data Processing ◽  
Gps Data ◽  
Gps Measurements ◽  
Highway Engineering ◽  
Gps Positioning ◽  
Engineering Theory ◽  
Data Process ◽  
Data Processing Software ◽  
Gps Data Processing ◽  
Processing Software

In this paper, absorbing the domestic and foreign research results of GPS positioning technology, it is based on further GPS measurements in the highway engineering theory and methods in a systematic study of the GPS data processing process. It also introduces the high-precision GPS data processing software GAMIT. It also gives and analyzes the highway GPS data processing results from control measurements.

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