Research on Ranging Method Based on Binocular Stereo Vision

2014 ◽  
Vol 945-949 ◽  
pp. 2075-2081 ◽  
Author(s):  
Xue Zhi Lv ◽  
Mei Ting Wang ◽  
Yong Feng Qi ◽  
Xue Mei Zhao ◽  
Hao Dong
Keyword(s):  
Camera Calibration ◽  
Stereo Vision ◽  
Experimental Platform ◽  
Binocular Stereo Vision ◽  
Parallel Arrangement ◽  
Binocular Stereo ◽  
Contour Boundary ◽  
Measurement Object ◽  
Stereo Calibration ◽  
Left And Right

Binocular stereo vision ranging method taking contour boundary center of measurement object as matching features was investigated. And experimental platform for binocular stereo vision ranging system was built up. The stereo vision ranging system comprised four modules: camera calibration, stereo calibration, stereo rectification and features extraction. Firstly, the intrinsic parameters of single camera were obtained by camera calibration and relative pose of two cameras was obtained by stereo calibration. Then the left and right images were rectified into a frontal parallel arrangement by Bouguet’s method. The edge pixels of contours were detected by image processing. Then the disparity and the distance was calculated taking contour center as matching features. Finally, measurement error analysis was performed to verify the proposed method with good practicability.

The Calibration of Binocular Stereo Vision for the Camera Based on Machine Vision Measurement

2014 ◽  
Vol 701-702 ◽  
pp. 361-366
Author(s):  
Xiao Jing Yang ◽  
Si Qi Wang
Keyword(s):  
Machine Vision ◽  
Camera Calibration ◽  
Stereo Vision ◽  
Vision System ◽  
Calibration Target ◽  
Vision Measurement ◽  
Matlab Program ◽  
Binocular Stereo Vision ◽  
Binocular Stereo ◽  
Left And Right

Camera calibration is the most important stage of machine vision measurement. The principle and method of camera calibration for binocular stereo vision system are introduced and the left and right CCD are respectively calibrated by using the prepared calibration target and the MATLAB program. Then internal and external camera parameters are obtained by the calibration experiments. The experimental results show that the calibration results have high precision.

The Implementation of Distance Measurement Using Binocular Vision

2012 ◽  
Vol 490-495 ◽  
pp. 711-715
Author(s):  
Alin Hou ◽  
Ying Geng ◽  
Xue Cui ◽  
Wen Ju Yuan ◽  
Feng Guang Shi
Keyword(s):  
Camera Calibration ◽  
Binocular Vision ◽  
Stereo Vision ◽  
Distance Measurement ◽  
Simulation Experiments ◽  
Visual Measurement ◽  
Actual Distance ◽  
Binocular Stereo Vision ◽  
Binocular Stereo ◽  
Image Pairs

The method of distance measurement based on binocular stereo vision is presented in this paper. The model of camera imaging is established and the process of camera calibration is described. Interior and external parameters of two cameras are calculated by HALCON. The system of visual measurement is fabricated. The parallax measurement of the image pairs is accomplished. The simulation experiments of distance measurement have been done and the calculated results can be in accordance with the actual distance.

Binocular Stereo Vision Calibration System Implementation of Grid Strain Measurement in Sheet Forming

2013 ◽  
Vol 397-400 ◽  
pp. 1547-1551
Author(s):  
Hui Yu Xiang ◽  
Bao An Han ◽  
Zhe Li ◽  
Jia Jun Huang
Keyword(s):  
Stereo Vision ◽  
Strain Measurement ◽  
Calibration Method ◽  
Sheet Forming ◽  
Calibration System ◽  
Camera Model ◽  
Distortion Factor ◽  
Binocular Stereo Vision ◽  
Binocular Stereo ◽  
Stereo Calibration

For the research of camera calibration in the system of grid strain measurement in sheet forming, the pinhole camera model, the nonlinear model of the camera and the binocular stereo model are analyzed, drawing a binocular stereo calibration method based on HALCON, which detailedly describes the calibration principle and specific calibration process. A binocular stereo vision calibration system based on VC6.0 is established, by which the influence on camera focus, distortion factor and principle points from the number of calibration images is verified by experiments.

Measurement of the Depth Distance Based on the Binocular Stereo Vision

2012 ◽  
Vol 468-471 ◽  
pp. 1895-1898 ◽  
Author(s):  
A Lin Hou ◽  
Ying Geng ◽  
Xue Cui ◽  
Wen Ju Yuan ◽  
Feng Guang Shi
Keyword(s):  
Camera Calibration ◽  
Stereo Vision ◽  
Measurement System ◽  
Measuring Method ◽  
Simulation Experiments ◽  
Camera Imaging ◽  
Binocular Stereo Vision ◽  
Binocular Stereo ◽  
Image Pairs

The measurement system of the depth distance based on binocular stereo vision is proposed. The model of camera imaging is established and the process of camera calibration is described. Interior and external parameters of two cameras are calculated by HALCON. Then the depth distance can be obtained by the parallax measurement of the image pairs. The simulation experiments have been done and the results demonstrated that the measuring method is feasible.

Research on Manipulator Positioning Based on Stereo Vision in Virtual Environment

2008 ◽  
Vol 392-394 ◽  
pp. 200-204 ◽  
Author(s):  
Xiang Jun Zou ◽  
Hai Xin Zou ◽  
J. Lu ◽  
Yan Chen ◽  
Ai Xia Guo ◽  
...  
Keyword(s):  
Virtual Environment ◽  
Stereo Vision ◽  
Simulation System ◽  
Simulation Software ◽  
Complex Environment ◽  
Environment Modeling ◽  
Long Distance ◽  
Experimental Platform ◽  
Binocular Stereo Vision ◽  
Binocular Stereo

Inherent uncertainties always exist in the positioning picking manipulators in complex environment, modeling and simulation of positioning. The manipulators were discussed based on binocular stereo vision in virtual environment (VE). Based on stereo vision, a method how virtual manipulators locate picking object by human-computer interaction (HCI) was proposed. The data input from vision were mapped to virtual picking manipulators so that it could enable the positioning and simulation with route and events-driven mechanism. The positioning experimental platform in VE consists of hardware of CCD stereo vision and simulation software. The visualized simulation system was exploited by EON SDK. The simulation of manipulator’s positioning was realized in VE by the platform. This method can be used for virtual robot to locate objects’ long-distance positioning in complex environment.

Research on Underwater Binocular Camera Calibration and Distortion Analysis in Current Disturbance

2014 ◽  
Vol 548-549 ◽  
pp. 688-692 ◽  
Author(s):  
Yong Jie Pang ◽  
Di Wang ◽  
Hai Huang ◽  
Ming Wei Sheng
Keyword(s):  
Camera Calibration ◽  
Flow Disturbance ◽  
Binocular Stereo Vision ◽  
Calibration Experiment ◽  
Distortion Analysis ◽  
Calibration Methods ◽  
Static Water ◽  
Binocular Stereo ◽  
Actual Operation ◽  
Stereo Calibration

The camera calibration is the basis of the binocular stereo vision technology. The purpose of the stereo calibration camera is to obtain the camera internal and external parameters and distortion coefficients. However, disturbances such as current are usually accompanied with the static water in the actual operation environment of underwater binocular cameras, which may cause further coefficients distortion. Therefore it is necessary to carry out the binocular calibration experiment in the flow disturbance. The camera distortion is analyzed both in static water condition and flow disturbance state. The analysis results indicate that the calibration methods used in this article is verified and the obtained parameters and distortion coefficients are accurate and reliable.

Sign in / Sign up

Export Citation Format

Share Document