Research of Multi-Sensor Data Fusion Based on Binocular Vision Sensor and Laser Range Sensor

2016 ◽  
Vol 693 ◽  
pp. 1397-1404 ◽  
Author(s):  
Qi Long Wang ◽  
Jian Yong Li ◽  
Hai Kuo Shen ◽  
Teng Teng Song ◽  
Yan Xuan Ma
Keyword(s):  
Binocular Vision ◽  
Measurement Accuracy ◽  
Optical Axis ◽  
Vertical Direction ◽  
Utilization Efficiency ◽  
Sensor Data ◽  
Vision Sensor ◽  
Laser Range ◽  
Range Sensor ◽  
Sensor Information

The system of binocular vision sensor was used in the air-to-air close air target positioning in the paper. Due to the limitation of model itself, the measurement accuracy along the direction of optical axis is far lower than the accuracy of vertical direction. In order to improve the measurement accuracy of the optical axis, the paper put forward to using laser range sensor to cooperate with binocular vision sensor; Then the paper proposed adopts adaptive weighted fusion algorithm of multi-sensor information fusion to improve the utilization efficiency of multi-sensor information and to make the results accurately; Finally, the parameters of the system were calibration respectively and experiment is simulated, experimental results show that the position system is feasibility and effectiveness.

2P2-C05 Human following of mobile robot by local map from laser range sensor information

2008 ◽  
Vol 2008 (0) ◽  
pp. _2P2-C05_1-_2P2-C05_3
Author(s):  
Takashi OGINO ◽  
Toshinari AKIMOTO ◽  
Masahiro TOMONO ◽  
Akihiro MATSUMOTO
Keyword(s):  
Mobile Robot ◽  
Laser Range ◽  
Range Sensor ◽  
Sensor Information ◽  
Local Map

Profile Charts for Monitoring Lumber Manufacturing Using Laser Range Sensor Data

2007 ◽  
Vol 39 (3) ◽  
pp. 224-240 ◽  
Author(s):  
Christina Staudhammer ◽  
Thomas C. Maness ◽  
Robert A. Kozak
Keyword(s):  
Sensor Data ◽  
Laser Range ◽  
Range Sensor

Target Tracking System of Binocular Vision and Laser Range Sensor

2016 ◽  
Vol 36 (9) ◽  
pp. 0912002
Author(s):  
王琪龙 Wang Qilong ◽  
李建勇 Li Jianyong ◽  
沈海阔 Shen Haikuo
Keyword(s):  
Target Tracking ◽  
Binocular Vision ◽  
Tracking System ◽  
Laser Range ◽  
Range Sensor

scholarly journals High precision assembly and efficient dispensing approaches for millimeter objects

2019 ◽  
Vol 16 (3) ◽  
pp. 172988141985739 ◽  
Author(s):  
Ying Li ◽  
Dapeng Zhang ◽  
De Xu
Keyword(s):  
High Precision ◽  
Waiting Time ◽  
Optical Axis ◽  
Normal Vector ◽  
Limited Time ◽  
Lower Edge ◽  
Laser Range ◽  
Stable Level ◽  
Range Sensor ◽  
Novel Method

In this article, high precision alignment and efficient dispensing approaches for millimeter objects are proposed. Firstly, a thin component and a cylindrical component are assembled together based on microscopic vision and laser range sensor. If the normal vector of upper surface of thin component is not perpendicular to the optical axis of side camera, the region around the lower edge line will be blurred easily in image. In order to measure the orientation of the thin component with high precision, a novel method based on laser range sensor is proposed. The two components are assembled after orientation and position alignment. In order to bond the two components, the glue is dispensed into all the 16 holes on the components. For keeping the two components firm after being dispensed, the volume of glue dispensed into the 16 holes should be controlled precisely. A laser range sensor is employed to measure the volume of fluid glue. The dispensing process should be finished in a limited time for the characteristics of fluid glue that will change with time. The fluid glue should be dispensed into the hole for some times to reach the expected volume. However, it is necessary to wait a little time in order to obtain stable level of glue after the glue is dispensed into the hole. Therefore, a dual dispensing strategy with higher efficiency is developed which fully utilizes the waiting time. Experimental results validate the effectiveness of the proposed system and methods.

scholarly journals Laser Ranging-Assisted Binocular Visual Sensor Tracking System

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 688 ◽  
Author(s):  
Qilong Wang ◽  
Yu Zhang ◽  
Weichao Shi ◽  
Meng Nie
Keyword(s):  
Target Tracking ◽  
Binocular Vision ◽  
Measurement Accuracy ◽  
Mechanical Performance ◽  
Optical Axis ◽  
Tracking System ◽  
Laser Ranging ◽  
Visual Sensor ◽  
Vision Sensors ◽  
Federated Filtering

Aimed at improving the low measurement accuracy of the binocular vision sensor along the optical axis in the process of target tracking, we proposed a method for auxiliary correction using a laser-ranging sensor in this paper. In the process of system measurement, limited to the mechanical performance of the two-dimensional turntable, the measurement value of a laser-ranging sensor is lagged. In this paper, the lag information is updated directly to solve the time delay. Moreover, in order to give full play to the advantages of binocular vision sensors and laser-ranging sensors in target tracking, federated filtering is used to improve the information utilization and measurement accuracy and to solve the estimated correlation. The experimental results show that the real-time and measurement accuracy of the laser ranging-assisted binocular visual-tracking system is improved by the direct update algorithm and the federal filtering algorithm. The results of this paper are significant for binocular vision sensors and laser-ranging sensors in engineering applications involving target tracking systems.

scholarly journals Research on Measurement Accuracy of Laser Tracking System Based on Spherical Mirror with Rotation Errors of Gimbal Mount Axes

2018 ◽  
Vol 18 (1) ◽  
pp. 13-19 ◽  
Author(s):  
Zhaoyao Shi ◽  
Huixu Song ◽  
Hongfang Chen ◽  
Yanqiang Sun
Keyword(s):  
Measurement Error ◽  
Measurement Accuracy ◽  
Optical Axis ◽  
Tracking System ◽  
Vertical Direction ◽  
Laser Ranging ◽  
Spherical Mirror ◽  
Laser Tracking ◽  
Radial Error ◽  
Error Motion

Abstract This paper presents a novel experimental approach for confirming that spherical mirror of a laser tracking system can reduce the influences of rotation errors of gimbal mount axes on the measurement accuracy. By simplifying the optical system model of laser tracking system based on spherical mirror, we can easily extract the laser ranging measurement error caused by rotation errors of gimbal mount axes with the positions of spherical mirror, biconvex lens, cat’s eye reflector, and measuring beam. The motions of polarization beam splitter and biconvex lens along the optical axis and vertical direction of optical axis are driven by error motions of gimbal mount axes. In order to simplify the experimental process, the motion of biconvex lens is substituted by the motion of spherical mirror according to the principle of relative motion. The laser ranging measurement error caused by the rotation errors of gimbal mount axes could be recorded in the readings of laser interferometer. The experimental results showed that the laser ranging measurement error caused by rotation errors was less than 0.1 μm if radial error motion and axial error motion were within ±10 μm. The experimental method simplified the experimental procedure and the spherical mirror could reduce the influences of rotation errors of gimbal mount axes on the measurement accuracy of the laser tracking system.

scholarly journals Phase-Based Calibration Method for a Binocular Vision Sensor

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 44354-44362
Author(s):  
Mingwei Shao ◽  
Pan Wang ◽  
Yanjun Wang
Keyword(s):  
Binocular Vision ◽  
Calibration Method ◽  
Vision Sensor

scholarly journals Effects of Loading and Boundary Conditions on the Performance of Ultrasound Compressional Viscoelastography: A Computational Simulation Study to Guide Experimental Design

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2590
Author(s):  
Che-Yu Lin ◽  
Ke-Vin Chang
Keyword(s):  
Boundary Conditions ◽  
Simulation Study ◽  
Viscoelastic Properties ◽  
Measurement Accuracy ◽  
Computational Simulation ◽  
Vertical Direction ◽  
Fixation Method ◽  
Element Analysis ◽  
Sample Container

Most biomaterials and tissues are viscoelastic; thus, evaluating viscoelastic properties is important for numerous biomedical applications. Compressional viscoelastography is an ultrasound imaging technique used for measuring the viscoelastic properties of biomaterials and tissues. It analyzes the creep behavior of a material under an external mechanical compression. The aim of this study is to use finite element analysis to investigate how loading conditions (the distribution of the applied compressional pressure on the surface of the sample) and boundary conditions (the fixation method used to stabilize the sample) can affect the measurement accuracy of compressional viscoelastography. The results show that loading and boundary conditions in computational simulations of compressional viscoelastography can severely affect the measurement accuracy of the viscoelastic properties of materials. The measurement can only be accurate if the compressional pressure is exerted on the entire top surface of the sample, as well as if the bottom of the sample is fixed only along the vertical direction. These findings imply that, in an experimental validation study, the phantom design should take into account that the surface area of the pressure plate must be equal to or larger than that of the top surface of the sample, and the sample should be placed directly on the testing platform without any fixation (such as a sample container). The findings indicate that when applying compressional viscoelastography to real tissues in vivo, consideration should be given to the representative loading and boundary conditions. The findings of the present simulation study will provide a reference for experimental phantom designs regarding loading and boundary conditions, as well as guidance towards validating the experimental results of compressional viscoelastography.

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