Integrative evaluation of the optimal configuration for the measurement of the line segments using stereo vision

Xu, Guolin; Li, Xiaotao; Su, Jian; Pan, Hongda; Geng, Lanxin

doi:10.1016/j.ijleo.2013.01.018

Cited by 9 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This time, however, a stereo pair with parallel optical axes is considered. Another, more recent analysis of a stereo pair is given in papers [28], [29]. From the point of view of specific applications, the importance of studying the impact that the geometry of the system exerts on the results obtained in practice is shown, for instance, in [12], where stereo pair-based visual odometry is optimized by adjusting camera orientation.…”

Section: Related Workmentioning

confidence: 99%

Factors Influencing Accuracy of Estimating Position of Objects in a Multi-camera System

Klimaszewski,

Grajek,

Wegner

2024

JTIT

View full text Add to dashboard Cite

Nowadays, research focusing on robotics, autonomous vehicles, and scene analysis shows a clear need for the ability to accurately reconstruct three-dimensional environments. One of the methods allowing to conduct such a reconstruction is to use a set of cameras and image processing techniques. This is a passive method. Despite being, in general, less accurate than its active counterparts, it offers significant advantages in numerous applications in which active systems cannot be deployed due to limited performance. This paper provides a theoretical analysis of the accuracy of estimating 3D positions of objects present at a given scene, based on images from a set of cameras. The analysis assumes a known geometrical configuration of the camera system. The important limiting factor in the considered scenario is the physical resolution of sensors - especially in the case of systems that are supposed to work in real time, with a high FPS rate, as the use of high-resolution cameras is difficult in such circumstances. In the paper, the influence of the geometric arrangement of the cameras is studied and important conclusions about the potential of three-camera configurations are drawn. The analysis performed and the formulas derived help predict the boundary accuracy values of any system using a digital camera. The results of an experiment that confirm the theoretical conclusions are presented as well.

show abstract

Section: Related Workmentioning

confidence: 99%

Factors Influencing Accuracy of Estimating Position of Objects in a Multi-camera System

Klimaszewski,

Grajek,

Wegner

2024

JTIT

View full text Add to dashboard Cite

show abstract

“…We assume that the camera has no significant lens radial distortion or tangent distortion in this paper. The camera is modeled by the usual pinhole, which is represented as 33 where X = ( X , Y , Z ,1)’ are the world coordinates of the feature points on the 3D calibration board, x = ( x , y ,1)’ are the image coordinates of the corresponding feature points, M is a 3 × 4 transformation matrix, which shows the relationship between the 3D point X on the 3D calibration board and its 2D projection x in the camera image. s is a scaling factor.…”

Section: Calibration Processmentioning

confidence: 99%

An optimization solution of a laser plane in vision measurement with the distance object between global origin and calibration points

Hao

et al. 2015

Sci Rep

Self Cite

View full text Add to dashboard Cite

Equation construction of a laser plane demonstrates a remarkable importance for vision measurement systems based on the structured light. Here we create a simple 1D target with a cone at the bottom and a checkered pattern on the top to calibrate the equation of the laser plane in the view field of a camera. A group of 2D coordinates of the intersection points are extracted from the images with the 1D target at different positions. The objective function is constructed to optimize the coefficients of the laser plane by minimizing the difference between the distance from the feature point to the the origin point and the length of the 1D target. The projective lines of the optimized laser plane on the 3D calibration board overlap the real intersection lines in the experimental images. Finally, the comparison work about the influences of the non-Gaussian noise and point number is investigated experimentally. The experiments show that the method of the distance optimal object from the feature point to the origin point provides an accurate and robust calibration for the laser plane in structured light measurement.

show abstract

“…Deng et al [26] have studied the effect of vision measurement parameters on the accuracy of binocular reconstruction at high temperatures. Xu et al [27] determined the optimal configuration of the system by comprehensively analyzing the baseline distance and measurement distance. Tang et al [28] analyzed the relationship between the depth errors, the field of views and the distances through measurement tests, and obtained the error correction curves.…”

Section: Introductionmentioning

confidence: 99%

Accuracy Improvement of Binocular Vision Measurement System for Slope Deformation Monitoring

Feng

et al. 2020

Sensors

View full text Add to dashboard Cite

This paper studies the limitations of binocular vision technology in monitoring accuracy. The factors affecting the surface displacement monitoring of the slope are analyzed mainly from system structure parameters and environment parameters. Based on the error analysis theory, the functional relationship between the structure parameters and the monitoring error is studied. The error distribution curve is obtained through laboratory testing and sensitivity analysis, and parameter selection criteria are proposed. Corresponding image optimization methods are designed according to the error distribution curve of the environment parameters, and a large number of tests proved that the methods effectively improved the measurement accuracy of slope deformation monitoring. Finally, the reliability and accuracy of the proposed system and method are verified by displacement measurement of a slope on site.

show abstract

Integrative evaluation of the optimal configuration for the measurement of the line segments using stereo vision

Cited by 9 publications

References 10 publications

Factors Influencing Accuracy of Estimating Position of Objects in a Multi-camera System

Factors Influencing Accuracy of Estimating Position of Objects in a Multi-camera System

An optimization solution of a laser plane in vision measurement with the distance object between global origin and calibration points

Accuracy Improvement of Binocular Vision Measurement System for Slope Deformation Monitoring

Contact Info

Product

Resources

About