Measurement error analysis of three dimensional coordinates of tomatoes acquired using the binocular stereo vision

2014 ◽  
Author(s):  
Rong Xiang
Keyword(s):  
Measurement Error ◽  
Error Analysis ◽  
Stereo Vision ◽  
Three Dimensional ◽  
Binocular Stereo Vision ◽  
Binocular Stereo

scholarly journals High-Accuracy Recognition and Localization of Moving Targets in an Indoor Environment Using Binocular Stereo Vision

2021 ◽  
Vol 10 (4) ◽  
pp. 234
Author(s):  
Jing Ding ◽  
Zhigang Yan ◽  
Xuchen We
Keyword(s):  
Stereo Vision ◽  
Stereo Matching ◽  
Three Dimensional ◽  
Target Localization ◽  
Parallel Structure ◽  
Moving Target ◽  
Target Area ◽  
Moving Targets ◽  
Binocular Stereo Vision ◽  
Binocular Stereo

To obtain effective indoor moving target localization, a reliable and stable moving target localization method based on binocular stereo vision is proposed in this paper. A moving target recognition extraction algorithm, which integrates displacement pyramid Horn–Schunck (HS) optical flow, Delaunay triangulation and Otsu threshold segmentation, is presented to separate a moving target from a complex background, called the Otsu Delaunay HS (O-DHS) method. Additionally, a stereo matching algorithm based on deep matching and stereo vision is presented to obtain dense stereo matching points pairs, called stereo deep matching (S-DM). The stereo matching point pairs of the moving target were extracted with the moving target area and stereo deep matching point pairs, then the three dimensional coordinates of the points in the moving target area were reconstructed according to the principle of binocular vision’s parallel structure. Finally, the moving target was located by the centroid method. The experimental results showed that this method can better resist image noise and repeated texture, can effectively detect and separate moving targets, and can match stereo image points in repeated textured areas more accurately and stability. This method can effectively improve the effectiveness, accuracy and robustness of three-dimensional moving target coordinates.

The Technology of Circular Parts Precise Measurement Based on Binocular Calibration

2013 ◽  
Vol 333-335 ◽  
pp. 199-206
Author(s):  
Chuan Wang ◽  
Jie Yang ◽  
Yan Wei Zhou
Keyword(s):  
Stereo Vision ◽  
Image Matching ◽  
Precise Measurement ◽  
Three Dimensional ◽  
Epipolar Constraint ◽  
Binocular Stereo Vision ◽  
Binocular Stereo ◽  
Analytic Expression ◽  
Lm Algorithm ◽  
Calibration Plane

A method of measuring the radius of circular parts by binocular stereo vision technology is proposed. First of all the interior and exterior parameters of cameras are acquired by the camera calibration technology. Then the epipolar constraint can be calculated which contains the calibrated information. The image matching which uses the epipolar constraint is done to find the matching points. The three dimensional (3D) coordinates of edges points are reconstructed through trigonometry reconstruction. At last the analytic expression of the plane in which the circle lies and the circles radius are calculated in two steps by Levenberg-Marquardt (LM) algorithm. The proposed method does not require the prior knowledge of position between the measuring plane and the calibration plane which monocular measurement needs. Experimental results show that the measurement has high precision.

Error Analysis of Binocular Stereo Vision System Applied in Small Scale Measurement

2015 ◽  
Vol 44 (10) ◽  
pp. 1011001 ◽  
Author(s):  
卢宝莉 LU Bao-li ◽  
刘育梁 LIU Yu-liang ◽  
孙亮 SUN Liang
Keyword(s):  
Error Analysis ◽  
Stereo Vision ◽  
Vision System ◽  
Small Scale ◽  
Stereo Vision System ◽  
Binocular Stereo Vision ◽  
Binocular Stereo

Object Tracking and Positioning Based on Stereo Vision

2013 ◽  
Vol 303-306 ◽  
pp. 313-317 ◽  
Author(s):  
Zhong Wei Zhou ◽  
Min Xu ◽  
Wei Fu ◽  
Ji Zeng Zhao
Keyword(s):  
Object Tracking ◽  
Real Time ◽  
Stereo Vision ◽  
Stereo Matching ◽  
Three Dimensional ◽  
Spatial Location ◽  
Binocular Stereo Vision ◽  
Camshift Algorithm ◽  
Spatial Location Information ◽  
Binocular Stereo

The goal of this paper is to present a method for object tracking and positioning based on stereo vision in real time. The method effectively combined stereo matching algorithm with object tracking algorithm, and calculated the spatial location information of the object by using binocular stereo vision while the object is being tracked. The stereo matching used dynamic programming, image pyramids and control points modification algorithm, and the object tracking mainly utilized CamShift algorithm in this paper. The experimental results have confirmed that the proposed method realized real-time tracking for moving object, accurate calculating for the object three-dimensional coordinates, which meet the applied needs of servo follow-up system.

scholarly journals Multivisual Animation Character 3D Model Design Method Based on VR Technology

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Leiming Li ◽  
Wenyao Zhu ◽  
Hongwei Hu
Keyword(s):  
Virtual Reality ◽  
Computer Graphics ◽  
Stereo Vision ◽  
3D Model ◽  
Three Dimensional ◽  
Geometric Transformation ◽  
3D Graphics ◽  
Binocular Stereo Vision ◽  
Binocular Stereo ◽  
Rendering Pipeline

For VR systems, one of its core parts is to present people with a real and immersive 3D simulation environment. This paper uses real-time computer graphics technology, three-dimensional modeling technology, and binocular stereo vision technology to study the multivisual animation character objects in virtual reality technology; designs a binocular stereo vision animation system; designs and produces a three-dimensional model; and develops a virtual multivisual animation scene application. The main research content and work performed in the text include the research of the basic graphics rendering pipeline process and the analysis and research of each stage of the rendering pipeline. It mainly analyzes the 3D graphics algorithm used in the three-dimensional geometric transformation of computer graphics and studies the basic texture technology, basic lighting model, and other image output processes used in the fragment processing stage. Combined with the development needs of the subject, the principles of 3D animation rendering production software and 3D graphics modeling are studied, and the solid 3D model displayed in the virtual reality scene is designed and produced. This article also reflects the application of virtual reality in multivisual animation character design from the side, so it has realistic value and application prospects.

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