Camera calibration method of binocular stereo vision based on OpenCV

Aiming at the camera calibration of binocular stereo vision system, based on Zhang’s calibration method, the specified points in the calibration template obtained by the Harris operator, a set of camera calibration system combined with VC++ and Matlab was developed. The results of the calibration system, comparing with those of four-step calibration method, was analyzed and showed that: the error of calibration data in this system was within 0~5 mm, which had a high precision calibration, providing a new reference measure for the camera calibration.

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Research on Ranging Method Based on Binocular Stereo Vision

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.945-949.2075 ◽

2014 ◽

Vol 945-949 ◽

pp. 2075-2081 ◽

Cited By ~ 2

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.

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The Implementation of Distance Measurement Using Binocular Vision

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.490-495.711 ◽

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.

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.397-400.1547 ◽

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.

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Measurement of the Depth Distance Based on the Binocular Stereo Vision

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.468-471.1895 ◽

2012 ◽

Vol 468-471 ◽

pp. 1895-1898 ◽

Cited By ~ 1

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.

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.701-702.361 ◽

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.

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