Calibration Method of 3D Body Measurement System Using Stripe Grating Projection

2012 ◽  
Vol 503-504 ◽  
pp. 1265-1269
Author(s):  
Xiu Xiang Huang ◽  
Qing Tan ◽  
Yi Min Xia ◽  
Ze Yuan Liu ◽  
Lei Cai
Keyword(s):  
Measurement System ◽  
Low Cost ◽  
Calibration Method ◽  
High Accuracy ◽  
Body Measurement

Calibration is crucial to the accuracy of grating measurement, which directly determines the accuracy of the measurement. The traditional calibration principle is easily influenced by some factors in projection measurement for lack of flexibility. This paper presents a new calibration method by using and improving Zhang’s Calibration Method, by which high accuracy and efficiency are achieved with low cost.

A self-calibration method with high-accuracy and low-cost for large-area motion stage based on digital grating projection mode

2019 ◽  
Vol 12 (12) ◽  
pp. 126503
Author(s):  
Shengzhou Huang ◽  
Mujun Li ◽  
Lei Wang ◽  
Yongsheng Su ◽  
Yi Liang
Keyword(s):  
Low Cost ◽  
Calibration Method ◽  
High Accuracy ◽  
Large Area ◽  
Self Calibration ◽  
Motion Stage

Research of Super-Size Intelligence Flow Measurement System

2012 ◽  
Vol 588-589 ◽  
pp. 1006-1009
Author(s):  
Yu Bin Zhao ◽  
Ya Li Li ◽  
Jia Cheng Wang ◽  
Zhen Zhang
Keyword(s):  
Measurement System ◽  
Flow Measurement ◽  
Calibration Method ◽  
High Accuracy ◽  
Venturi Tube ◽  
Calibration Data ◽  
International Standard ◽  
Water Transportation ◽  
Flow Metering ◽  
Industrial Projects

In this paper, we study a kind of intelligent and high-accuracy flow measurement system, which is a type of venturi tube flowmeter that surpassed the international standard ISO5167. This paper analyzes the characteristics of the super-size flow measurement in the water transportation and industrial projects, and the choice for suitable flow meters. We study the practical compensation technology for discharging coefficient “C” of the international-standard-exceeding venturi tube, and puts forward water calibration method for venturi tube, and design the intelligent and high-accuracy flow metering system based on computer technology. Furthermore, this paper analyzes the calibration data of water flow, and propose the segment and compensation method for discharging coefficient “C” practically. We solved the limitations of the international-standard-exceeding venturi tubes, and effectively improved the accuracy and range of the flow measurement system.

3D Body Measurement System Based on Structured Light

2012 ◽  
Vol 503-504 ◽  
pp. 1280-1283
Author(s):  
Zhong Yang Li ◽  
Ze Yuan Liu ◽  
Bai Tong Wang ◽  
Xiu Xiang Huang
Keyword(s):  
Measurement System ◽  
Vision System ◽  
Structured Light ◽  
Calibration Method ◽  
Profile Measurement ◽  
Body Measurement ◽  
Standard Data ◽  
Projection Profile ◽  
Cad Cam ◽  
Visual Interface

This paper presents a 3D body measurement system based on structured light. We analyze the principal of projection profile measurement and model binocular system with two cameras which comprise a stereo vision system. The goal of calibration method is to achieve the high accuracy for human body dimensions. The system software based on VS 2008 and OpenGL provides a visual interface with standard data interface for CAD/CAM.

scholarly journals Low cost, high accuracy 1.5m2 heliostat

2020 ◽  
Author(s):  
Derek Schulte ◽  
Kyam Krieger ◽  
Carl W. Chin ◽  
Alexander Sonn
Keyword(s):  
Low Cost ◽  
High Accuracy

scholarly journals A Machine Vision Approach for Bioreactor Foam Sensing

2021 ◽  
pp. 247263032110088
Author(s):  
Jonas Austerjost ◽  
Robert Söldner ◽  
Christoffer Edlund ◽  
Johan Trygg ◽  
David Pollard ◽  
...  
Keyword(s):  
Machine Learning ◽  
Machine Vision ◽  
State Of The Art ◽  
Low Cost ◽  
High Accuracy ◽  
Consumer Electronics ◽  
Learning System ◽  
Automotive Applications ◽  
Fine Grained

Machine vision is a powerful technology that has become increasingly popular and accurate during the last decade due to rapid advances in the field of machine learning. The majority of machine vision applications are currently found in consumer electronics, automotive applications, and quality control, yet the potential for bioprocessing applications is tremendous. For instance, detecting and controlling foam emergence is important for all upstream bioprocesses, but the lack of robust foam sensing often leads to batch failures from foam-outs or overaddition of antifoam agents. Here, we report a new low-cost, flexible, and reliable foam sensor concept for bioreactor applications. The concept applies convolutional neural networks (CNNs), a state-of-the-art machine learning system for image processing. The implemented method shows high accuracy for both binary foam detection (foam/no foam) and fine-grained classification of foam levels.

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