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Journal articles on the topic 'Binocular vision. Computer vision'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Zhao, Ping, Yong Kui Li, and Shan Liang Xie. "Composite Measurement Method Based on Computer Vision Technology." Advanced Materials Research 418-420 (December 2011): 2118–21. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.2118.

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Based on analyzing current methods of acquiring point clouds data in reversing engineering, considering the features of structure light scanning and binocular stereovision, we proposed a composite measuring method based on vision technology, which combines the advantages of the two measurement methods in together, and established the measuring system. The greatest advantage of this method is that the edge data were obtained by binocular vision technology, and the internal data were obtained by Structure light method. In binocular vision, stereo matching was realized with the combination of epipolar constraint, corner feature matching and area matching, which could improve location precision and matching speed of feature point. An application example shows the composite measuring method is feasible.

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Zhang, Yanjun, Jianxin zhao, and Heyong Han. "A 3D Machine Vision-Enabled Intelligent Robot Architecture." Mobile Information Systems 2021 (March 4, 2021): 1–11. http://dx.doi.org/10.1155/2021/6617286.

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In this paper, the principle of camera imaging is studied, and the transformation model of camera calibration is analyzed. Based on Zhang Zhengyou’s camera calibration method, an automatic calibration method for monocular and binocular cameras is developed on a multichannel vision platform. The automatic calibration of camera parameters using human-machine interface of the host computer is realized. Based on the principle of binocular vision, a feasible three-dimensional positioning method for binocular target points is proposed and evaluated to provide binocular three-dimensional positioning of target in simple environment. Based on the designed multichannel vision platform, image acquisition, preprocessing, image display, monocular and binocular automatic calibration, and binocular three-dimensional positioning experiments are conducted. Moreover, the positioning error is analyzed, and the effectiveness of the binocular vision module is verified to justify the robustness of our approach.

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Hrdina, Jaroslav, and Aleš Návrat. "Binocular Computer Vision Based on Conformal Geometric Algebra." Advances in Applied Clifford Algebras 27, no. 3 (2017): 1945–59. http://dx.doi.org/10.1007/s00006-017-0764-4.

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4

Hansard, Miles, and Radu Horaud. "Cyclopean geometry of binocular vision." Journal of the Optical Society of America A 25, no. 9 (2008): 2357. http://dx.doi.org/10.1364/josaa.25.002357.

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5

Jiang, Du, Zujia Zheng, Gongfa Li, et al. "Gesture recognition based on binocular vision." Cluster Computing 22, S6 (2018): 13261–71. http://dx.doi.org/10.1007/s10586-018-1844-5.

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Ulianytska, Nataliia, Stepan Vadziuk, Nataliya Byelikova, Svitlana Indyka, and Oksana Usova. "Violation of the Teenagers-Computer Users’ Binocular Vision and Pecularities of its Restoration." Physical education, sports and health culture in modern society, no. 2(38) (June 30, 2017): 182–87. http://dx.doi.org/10.29038/2220-7481-2017-02-182-187.

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According to WHO experts, vision is vulnerable to computer loads. Computer users have complaints, combined by the terms «visual fatigue», «computer vision syndrome», which include a complex of violations in the system of refraction-accommodation. We did not find any research on the peculiarities of senior students’ binocular vision with emmetropia when they are working with a personal computer, and therefore we decided to study this issue. 63 healthy school age senior students were examined, those with emmetropic refraction but without ophthalmic, somatic and psychological abnormalities. Chromatic angle of view and chromatic stereoscopy were studied with the help of special computer techniques. The survey was conducted in three stages. At the first stage, we studied the effect of a one-hour nonstop work in front of the computer monitor on the visual functions, at the second one – their state after a 15 minute passive rest. The third stage involved implementing our own program «Saving and Restoration of Vision» anddetermining the investigated parameters. The «Saving and Restoration of Vision» program contains special eye exercises, as well as those for the shoulder and neck with breath-holding elements. It is ascertained that high school students’ one-hour work at the computer leads to deteriorating chromatic angle of view as well as chromatic stereoscopy. Herewith, the perfect match frequency of test objects decreased by 14,5 and 24,2 % respectively. Applying a set of rehabilitation exercises after a one-hour computer work allowed to restore the binocular vision to the original state, while a passive fifteen-minute rest after the computer visual load did not give such results. Thus, the study of senior students’ binocular vision with emmetropic refraction, after one hour of work, showed its violation, which can be eliminated by a complex of rehabilitation exercises from the authors' program «Saving and Restoration of Vision».

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Zhang, Ke, and Han Pin Luo. "A Fast Linear Calibration of Computer Stereo Vision System." Advanced Materials Research 305 (July 2011): 372–77. http://dx.doi.org/10.4028/www.scientific.net/amr.305.372.

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Computer stereo vision has been paid high attention in areas such as industry measurement and automatic control. Calibration of stereo vision system is a key step to implement vision measurement. Nonlinear calibration method involves too many parameters and too complex function, so the processing of optimization is difficult and slow. In this paper, two digital cameras are used to set up stereo vision system which provides convenient experimental operation. The binocular stereo vision system is calibrated using linear calibration model. The results indicate that the method is stable and fast with high precision and practicability.

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Harris, Julie, Harold Nefs, and Catherine Grafton. "Binocular vision and motion-in-depth." Spatial Vision 21, no. 6 (2008): 531–47. http://dx.doi.org/10.1163/156856808786451462.

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9

Sun, Hai Yan, and Li Guo Zang. "Monitoring driver attention distraction with binocular vision." International Journal of Modeling, Simulation, and Scientific Computing 10, no. 05 (2019): 1950027. http://dx.doi.org/10.1142/s1793962319500272.

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Driver attention distraction (DAD) is a typical artificial factor traffic accident, and DAD monitoring can improve driving security. In this study, a method was developed for accurate DAD monitoring based on binocular vision. A binocular vision system was built, and camera parameters of the system were calibrated based on Open CV. In the method, the driver’s facial image is obtained by using active infrared imaging technology and preprocessed to locate the eye positions. The connected component labeling algorithm for binary images is used to pinpoint the eye locations. The characteristic information of the eye pupils is extracted with the least-squares ellipse fitting algorithm, and the characteristic information of the Purkinje image is obtained with the Harris corner detection algorithm. A DAD warning model based on the binocular vision system was established to evaluate the attention state of the driver.

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10

Idesawa, Masanori. "3-D Illusory Phenomena with Binocular Viewing and Computer Vision." Journal of Robotics and Mechatronics 4, no. 3 (1992): 249–55. http://dx.doi.org/10.20965/jrm.1992.p0249.

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The human visual system can perceive 3-D information of an object by using disparity between two eyes, gradient of illumination (shading), occlusion, textures and their perspective and so on. Consequently, the disparity and the occlusion observed with binocular viewing seems to be the most important cues to get 3-D information. For the artificial realization of the visual function such as in computer vision or robot vision system, it seems to be a clever way to learn from the human visual mechanism. Recently, the author found a new type of illusion. When the visual stimuli of disparity are given only partially along the contour of an object, human visual system can perceive the 3-D surface (not only plane but also curved) of the object where there are no physical visual stimuli to get depth information. The interactions between the perceived illusory surface (occlusion, intersection and transparency) can be recognized. These newly found illusory phenomena have close relations with the visual function of 3-D space perception and can provide a new paradigm in the field of computer vision and human interface.

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Birkfellner, Wolfgang, Michael Figl, Christian Matula, et al. "Computer-enhanced stereoscopic vision in a head-mounted operating binocular." Physics in Medicine and Biology 48, no. 3 (2003): N49—N57. http://dx.doi.org/10.1088/0031-9155/48/3/402.

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Zhao, Lei. "Research on Virtual Piano Based on Computer Binocular Stereo Vision." Journal of Physics: Conference Series 1533 (April 2020): 032006. http://dx.doi.org/10.1088/1742-6596/1533/3/032006.

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Gimel'farb, G. L. "Intensity-based computer binocular stereo vision: Signal models and algorithms." International Journal of Imaging Systems and Technology 3, no. 3 (1991): 189–200. http://dx.doi.org/10.1002/ima.1850030304.

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Iwamoto, Tatsuya, and Masanori Idesawa. "Volume Perception and a Processing Method of Unpaired Region in Stereo Vision." Journal of Robotics and Mechatronics 9, no. 2 (1997): 121–25. http://dx.doi.org/10.20965/jrm.1997.p0121.

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In the human visual system, binocular unpaired regions, where binocular images do not correspond to each other, play a very important role on stereo perception. In our recent experiments, we found that binocular unpaired regions give a special effect on the volume perception of solid objects with curved surfaces. In this paper, we shall introduce phenomena of volume perception, and then propose some strategies for realizing such function on a computer vision system.

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Shen, Jie, Hong Ye Sun, Hui Bin Wang, Zhe Chen, and Yi Wei. "A Binocular Vision System for Underwater Target Detection." Applied Mechanics and Materials 347-350 (August 2013): 883–90. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.883.

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For the underwater target detecting task, a binocular vision system specialized to the underwater optical environment is proposed. The hardware platform is comprised of a image acquising unit, a image processing unit and a upper computer. Accordingly, the loaded software system is operated for the camera calibration, image preprocessing, feature point extraction, stereo matching and the three-dimensional restoration. The improved Harris operator is introduced for the three-dimensional reconstruction, considering the high scattering and strong attenuation by the underwater optical environment. The experiment results prove that the improved Harris operator is better adapt to the complex underwater optical environment and the whole system has the ability to obtain the three-dimensional coordinate of the underwater target more efficient and accurate.

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Zhang, Hui, Ling Tao Zhang, and Li Wang. "A New Binocular Vision Stereo Matching Algorithm." Applied Mechanics and Materials 389 (August 2013): 721–25. http://dx.doi.org/10.4028/www.scientific.net/amm.389.721.

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With the shortcomings of the large data amount and long time consuming in the conventional binocular vision stereo matching algorithm, a new fast stereo matching algorithm is presented in this paper. It is fast computed based on the line moments and angle vector .Firstly, the method detects image edge using canny operator, and finds the target objects according line moments, then the object contours feature points are extracted. Finally, using angle vector to realize the corresponding pixel matching in the left and right image .The algorithm effectively reduces the computational complexity, computational cost is decreased greatly. The experimental results show that the algorithm is possible and valid.

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Idesawa, Masanori, and Yasuhiro Mizukoshi. "3-D Computer Graphics System for Vision Research by Binocular Viewing." Journal of Robotics and Mechatronics 4, no. 1 (1992): 70–75. http://dx.doi.org/10.20965/jrm.1992.p0070.

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For the artificial realization and the application of the visual function of 3-D space perception, the better understanding of human visual mechanism is required strongly. The disparity and occlusion observed with binocular viewing seems to be the most important cues to get 3-D information. Then, the authors developed a simple stereoscopic display system using a time sharing display of left eye and right eye images with liquid crystal shutter. This system is composed of a simple small control circuit and has big advantages such as that the hardware can be applied to any types of display system and the software can be transplant to different type computer system easily. Then, the authors tried to apply this system for the vision research of 3-D perceptural function with binocular viewing.

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Liu, Shuang, Xiang Jie Kong, and Ming Cai Shan. "Vehicle Security Distance Control Based on Binocular Parallax Vision." Applied Mechanics and Materials 644-650 (September 2014): 207–10. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.207.

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Binocular parallax vision system is a kind of computer vision technology. Two cameras on different locations can get two different pictures of same object. The space position of the object can be calculated by the parallax information of two different pictures. The binocular parallax vision technology includes cameras calibration, image processing, and stereo matching analysis. The paper will introduce the inside and outside parameters calibration methods, and combing the traffic applications, designed the calibrating scheme. The parameters that obtained according to the scheme can meet the demands of measuring the vehicle distance. The high precision can meet the needs of intelligent transportation vehicles in a security vehicles spacing survey, which is an effective way for measuring the front car distance.

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19

Gui, Chen, Jun Peng, and Zuojin Li. "Oriented Planetary Exploration Robotic Vision Binocular Camera Calibration." International Journal of Cognitive Informatics and Natural Intelligence 7, no. 4 (2013): 83–95. http://dx.doi.org/10.4018/ijcini.2013100105.

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One of the goals of planetary exploration is to cache rock samples for subsequent return to Earth in the future Mars Sample Return (MSR) mission. This paper presents a method of binocular camera calibration. Robotic vision has become a very popular field in recent years due to the numerous promising applications it may enhance. However, errors within the cameras and in their perception of their environment can cause applications in robotics to fail. To help correct these intrinsic and extrinsic imperfections, stereo camera calibrations are performed. There are currently many accurate methods of camera calibration available; however, most or all of them are barely theoretical and difficultly practical. Because the authors' robot need to accurately approach and placement scientific objects, in this paper the authors present an image rectification method that is an extension to two-step method. There is an additional step for correcting the distorted image coordinates. The image rectification is performed and accurately compensates for radial and tangential distortions. Finally, through Matlab tool developed the results of experiment are accurate and available.

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Ma, Wen Juan, Shu Sen Sun, Jin Yu Song, and Wen Shu Li. "Circle Pose Estimation Based on Stereo Vision." Applied Mechanics and Materials 263-266 (December 2012): 2408–13. http://dx.doi.org/10.4028/www.scientific.net/amm.263-266.2408.

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This paper presents a simple method of circle pose estimation based on binocular stereo vision. It takes the projective equation of a circle as the basis, and gives the closed form solution of the pose parameters. Since there are two possible sets of pose parameters for a circle from one calibrated perspective view, the stereo vision constraints are incorporated and the accurate pose parameters are determined. Experiments using computer simulated data and real data demonstrate the robustness and accuracy of our method.

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Lee, Ji-Woo, Hyun Gug Cho, Byeong-Yeon Moon, Sang-Yeob Kim, and Dong-Sik Yu. "Effects of prolonged continuous computer gaming on physical and ocular symptoms and binocular vision functions in young healthy individuals." PeerJ 7 (June 4, 2019): e7050. http://dx.doi.org/10.7717/peerj.7050.

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Background and Objective Addiction to computer gaming has become a social problem in Korea and elsewhere, and it has been enlisted as a mental health disorder by the World Health Organization. Most studies related to computer use and vision have individually assessed physical and ocular symptoms and binocular vision. Accordingly, the present study comprehensively assessed subjective physical and ocular symptoms and functions related to binocular vision after prolonged continuous computer gaming. This study aimed to investigate the effects of prolonged continuous computer gaming on physical and ocular health and visual functions in young healthy individuals. Methods Fifty healthy college students (35 male/15 female), aged 19–35 years old, were enrolled in this study. The inclusion criteria were no binocular vision problems and no reported history of ocular disease. Participants played continuously for 4 h from 6:00 to 10:00 p.m. Physical and ocular symptoms and visual functions such as convergence, accommodation, phoria, and the blink rate were assessed before and after continuous computer gaming for 4 h. Results Continuous computer gaming for 4 h resulted in convergence and accommodation disturbances and increased physical and ocular discomfort. Near phoria showed an exophoric shift, whereas distance phoria showed no change. Moreover, the accommodative and vergence facilities and blink rate were significantly decreased. All visual functions recovered to the baseline levels by the following morning. Discussion Our findings suggest that excessive and continuous computer gaming impairs visual functions and causes ocular and physical fatigue. Our findings further the understanding of the adverse effects of excessive computer use on physical and ocular health, and adequate breaks are necessary to reduce physical and visual discomfort during computer gaming.

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Liu, James N. K., and Bernard C. S. Kan. "Development of the binocular-vision-enhanced mobile robot navigation." International Journal of Intelligent Systems Technologies and Applications 10, no. 1 (2011): 15. http://dx.doi.org/10.1504/ijista.2011.038262.

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Du, Qinjun, Xiang Shi, Bin Dai, and Enqing Lu. "Binocular stereo vision system for a humanoid robot." International Journal of Computer Applications in Technology 46, no. 4 (2013): 316. http://dx.doi.org/10.1504/ijcat.2013.053422.

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Zhang, Ben, and Denglin Zhu. "Improved Camera Calibration Method and Accuracy Analysis for Binocular Vision." International Journal of Pattern Recognition and Artificial Intelligence 35, no. 09 (2021): 2155010. http://dx.doi.org/10.1142/s0218001421550107.

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The quality of the stereo camera calibration method governs the accuracy of the binocular vision and thus determines the precision of the 3D reconstruction. Spurred by that, in this paper, we propose an improved calibration method that increases the calibration accuracy by optimizing the captured corners. Our method is multi-staged, where first, we employ the Harris corner detector to identify the uncertainties of all image corners. Then, for each detected corner, we apply a linear optimization, and finally, we calibrate the intrinsic and extrinsic parameters of the binocular vision setup by employing a nonlinear optimization scheme. We confirm the validity of our technique by analyzing the factors influencing the camera calibration accuracy and confirm the experimental conditions. Ultimately, we evaluate the proposed method and demonstrate that the mean error of our binocular vision architecture is more appealing compared to current literature.

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Zhang, Xiaolin. "Realize New Generation Vision Based onHuman Binocular System." Journal of The Institute of Image Information and Television Engineers 64, no. 12 (2010): 1850–53. http://dx.doi.org/10.3169/itej.64.1850.

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26

Fu, Yue Gang, and Fan Hao Jin. "A High-Precision Binocular Measurement System." Advanced Materials Research 823 (October 2013): 402–5. http://dx.doi.org/10.4028/www.scientific.net/amr.823.402.

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The system uses three-dimensional measurement of binocular vision theory, through optical, mechanical, computer and other aspects of the technology to measure the target without contact, and up to a certain precision. In the high-voltage area, high-altitude target,and the target which is not easy to touch, there is a unique measure advantage. Binocular stereo vision is based on the principle of parallax and using imaging devices from different locations to obtain two images of the measured object and obtain three dimensional geometric of target by positional deviation between corresponding points in computer image. Binocular stereo currently used in four areas: robot navigation, micro operating system parameter detection, three-dimensional measurements and virtual reality. In addition, the system not only to measure the length of the distant object, the system can also be used to measure the width, surface area, height and tilt angle. As the tip of an optical imaging technology this system has a broad application prospects in the future.

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Ma, Zong Fang, Hui Qin Wang, Dan Yang Zhao, Yan Hu, and Chan Luo. "Study on Source Locating Technology of Visible Fire Detection in Large Space Building." Advanced Materials Research 368-373 (October 2011): 3262–65. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.3262.

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Locating fire source position is a significant aspect of automatic fire detection since it plays an important role in extinguishing fire in large space building in a short time. On the basis of previous literatures of visible fire location detection through analyzing the features of fire images, binocular vision based fire source spatial location is proposed in accordance with the computer vision principle in this paper. The binocular vision location algorithm is employed to identify the fire source position. To reach this, three typical spatial positions of fire source are measured in terms of camera scanning firstly; Secondly, confidence coefficients are added into the measured data to obtain the accurate position of fire source. Finally, the amount of water in cannon is adjusted to the right direction to put out the fire.

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Rychkova, S. I., та V. G. Likhvantseva. "Мethod of Functional Treatment of Refractive Amblyopia in Children Using Alternating Presentation of Stereo Stimules". Ophthalmology in Russia 17, № 3 (2020): 429–34. http://dx.doi.org/10.18008/1816-5095-2020-3-429-434.

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The research is devoted to one of the most urgent problems of modern ophthalmology — the search for new approaches to creating effective methods of functional treatment of refractive amblyopia using computer technologies.The purpose of the work is to evaluate the effectiveness of computer technology with consistent use of alternating and non-alternating modes of presentation of stereostimulars in the functional treatment of refractive amblyopia in children.Patients and methods. 105 patients with refractive amblyopia at the age of 7 to 17 (on average 11.45 ± 0.3) years were observed. Refraction was hypermetropic in 31 (29.5 %) children, myopic in 62 (59 %) and mixed astigmatism was detected in 12 (11.5 %) children. The visual acuity of the best-seeing eye was on average 0.76 ± 0.01, that of the worse-seeing eye was 0.68 ± 0.02, and that of the binocular eye was 0.77 ± 0.01. In the study on synoptophore, all children had normal correspondence of the retina with the fusion reserves, which were significantly reduced. The character of vision was binocular in all children, but the presence of stereo vision on the Fly test was detected in 96 (91.4 %) children, and on the Lang test only in 73 (69.5 %) children. Functional treatment was performed using computer programs with sequential use of modes of alternating and non-alternating presentation of stereo stimuli with certain characteristics.Results. As a result of the course of treatment, the number of children with stereo vision increased from 96 (91.4 %) to 105 (100 %) on the Fly test and from 73 (69.52 %) to 97 (92.4 %) on the Lang test. In addition, there was a significant increase in visual acuity (on average, up to 0.96 ± 0.01 for the best-seeing eye, up to 0.9 ± 0.01 for the worse-seeing eye, and up to 0.97 ± 0.01 binocularly). There was also an increase in positive fusion reserves by 1.5 times and negative reserves by 1.3 times.Conclusion. Visual training with computer programs that provide the consistent use of modes of alternating and non-alternating presentation of stereo stimuli with certain characteristics is an effective way of functional treatment of refractive amblyopia in children, allowing to increase monocular and binocular visual acuity, improve the performance of fusion reserves and improve the state of stereo vision.

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Zhang, Jing, Ru Gao, Chun Yan Liu, and Ya Wei Zhao. "Research on 3D Modeling System Based on Binocular Vision Image Acquisition." Applied Mechanics and Materials 385-386 (August 2013): 640–43. http://dx.doi.org/10.4028/www.scientific.net/amm.385-386.640.

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Three-dimensional modeling of the image acquisition system based on binocular computer vision scanning system scene with MCU processing the two-dimensional image data collected by the CCD sensor, and complete the image binarization processing using hardware, to improve the efficiency of the image processing; using timing delay analysis circuit the edge of the identification image characteristics, the data amount of the compression of the image processing; will be collected by the CCD sensor the two-dimensional image data transmission to a computer, thereby effectively shortening the transmission time of the data.

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Lu, Lei, Ming Xu, Jeremy S. Smith, and Yuyao Yan. "Moving shadow detection via binocular vision and colour clustering." IET Computer Vision 14, no. 8 (2020): 665–73. http://dx.doi.org/10.1049/iet-cvi.2019.0175.

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Tachi, Susumu, and Kenichi Yasuda. "Evaluation Experiments of a Teleexistence Manipulation System." Presence: Teleoperators and Virtual Environments 3, no. 1 (1994): 35–44. http://dx.doi.org/10.1162/pres.1994.3.1.35.

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A teleexistence manipulation system was evaluated quantitatively by comparing tasks of tracking a randomly moving target under several operational conditions. The effects of various characteristics, e.g., binocular vision and the effect of natural arrangement of the head and the arm, are analyzed by comparing quantitatively the results under these operational conditions. A human tracking transfer function was measured and used for comparison. The results revealed the significant dominance of the binocular vision with natural arrangement of the head and arm, which is the most important characteristic of teleexistence.

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Yuan, Xuejiao, Qing Ran, Wenjing Zhao, and Jieqing Feng. "An Iterative Local Color Correction Method for Binocular Stereo Vision." Journal of Computer-Aided Design & Computer Graphics 31, no. 1 (2019): 65. http://dx.doi.org/10.3724/sp.j.1089.2019.17355.

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Shao, Mingwei, Pan Wang, and Yanjun Wang. "Phase-Based Calibration Method for a Binocular Vision Sensor." IEEE Access 9 (2021): 44354–62. http://dx.doi.org/10.1109/access.2021.3066379.

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Mansour, Mostafa, Pavel Davidson, Oleg Stepanov, and Robert Piché. "Relative Importance of Binocular Disparity and Motion Parallax for Depth Estimation: A Computer Vision Approach." Remote Sensing 11, no. 17 (2019): 1990. http://dx.doi.org/10.3390/rs11171990.

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Binocular disparity and motion parallax are the most important cues for depth estimation in human and computer vision. Here, we present an experimental study to evaluate the accuracy of these two cues in depth estimation to stationary objects in a static environment. Depth estimation via binocular disparity is most commonly implemented using stereo vision, which uses images from two or more cameras to triangulate and estimate distances. We use a commercial stereo camera mounted on a wheeled robot to create a depth map of the environment. The sequence of images obtained by one of these two cameras as well as the camera motion parameters serve as the input to our motion parallax-based depth estimation algorithm. The measured camera motion parameters include translational and angular velocities. Reference distance to the tracked features is provided by a LiDAR. Overall, our results show that at short distances stereo vision is more accurate, but at large distances the combination of parallax and camera motion provide better depth estimation. Therefore, by combining the two cues, one obtains depth estimation with greater range than is possible using either cue individually.

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Chang, Wen-Chung. "Binocular vision-based 3-D trajectory following for autonomous robotic manipulation." Robotica 25, no. 5 (2007): 615–26. http://dx.doi.org/10.1017/s0263574707003505.

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SUMMARYRobotic manipulators that have interacted with uncalibrated environments typically have limited positioning and tracking capabilities, if control tasks cannot be appropriately encoded using available features in the environments. Specifically, to perform 3-D trajectory following operations employing binocular vision, it seems necessary to have a priori knowledge on pointwise correspondence information between two image planes. However, such an assumption cannot be made for any smooth 3-D trajectories. This paper describes how one might enhance autonomous robotic manipulation for 3-D trajectory following tasks using eye-to-hand binocular visual servoing. Based on a novel encoded error, an image-based feedback control law is proposed without assuming pointwise binocular correspondence information. The proposed control approach can guarantee task precision by employing only an approximately calibrated binocular vision system. The goal of the autonomous task is to drive a tool mounted on the end-effector of the robotic manipulator to follow a visually determined smooth 3-D target trajectory in desired speed with precision. The proposed control architecture is suitable for applications that require precise 3-D positioning and tracking in unknown environments. Our approach is successfully validated in a real task environment by performing experiments with an industrial robotic manipulator.

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Lunghi, Claudia, and M. Concetta Morrone. "Early Interaction between Vision and Touch during Binocular Rivalry." Multisensory Research 26, no. 3 (2013): 291–306. http://dx.doi.org/10.1163/22134808-00002411.

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Multisensory integration is known to occur at high neural levels, but there is also growing evidence that cross-modal signals can be integrated at the first stages of sensory processing. We investigated whether touch specifically affected vision during binocular rivalry, a particular type of visual bistability that engages neural competition in early visual cortices. We found that tactile signals interact with visual signals outside of awareness, when the visual stimulus congruent with the tactile one is perceptually suppressed during binocular rivalry and when the interaction is strictly tuned for matched visuo-tactile spatial frequencies. We also found that voluntary action does not play a leading role in mediating the effect, since the interaction was observed also when tactile stimulation was passively delivered to the finger. However, simultaneous presentation of visual and tactile stimuli is necessary to elicit the interaction, and an asynchronous priming touch stimulus is not affecting the onset of rivalry. These results point to a very early cross-modal interaction site, probably V1. By showing that spatial proximity between visual and tactile stimuli is a necessary condition for the interaction, we also suggest that the two sensory spatial maps are aligned according to retinotopic coordinates, corroborating the hypothesis of a very early interaction between visual and tactile signals during binocular rivalry.

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Hibbard, Paul. "Can appearance be so deceptive? Representationalism and binocular vision." Spatial Vision 21, no. 6 (2008): 549–59. http://dx.doi.org/10.1163/156856808786451444.

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Xiang, Rong, Huanyu Jiang, and Yibin Ying. "Recognition of clustered tomatoes based on binocular stereo vision." Computers and Electronics in Agriculture 106 (August 2014): 75–90. http://dx.doi.org/10.1016/j.compag.2014.05.006.

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Chung, Jae-Moon, and Tadashi Nagata. "Binocular vision planning with anthropomorphic features for grasping parts by robots." Robotica 14, no. 3 (1996): 269–79. http://dx.doi.org/10.1017/s0263574700019585.

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SUMMARYPlanning of an active vision having anthropomorphic features, such as binocularity, foveas and gaze control, is proposed. The aim of the vision is to provide robots with the pose informaton of an adequate object to be grasped by the robots. For this, the paper describes a viewer-oriented fixation point frame and its calibration, active motion and gaze control of the vision, disparity filtering, zoom control, and estimation of the pose of a specific portion of a selected object. On the basis of the importance of the contour information and the scheme of stereo vision in recognizing objects by humans, the occluding contour pairs of objects are used as inputs in order to show the proposed visual planning.

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Udin, Susan B. "The instructive role of binocular vision in the Xenopus tectum." Biological Cybernetics 97, no. 5-6 (2007): 493–503. http://dx.doi.org/10.1007/s00422-007-0188-7.

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Zhu, Hao, Mulan Wang, and Weiye Xu. "Research on Calibration Method of Binocular Vision System Based on Neural Network." Security and Communication Networks 2021 (June 19, 2021): 1–9. http://dx.doi.org/10.1155/2021/5542993.

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In binocular vision inspection system, the calibration of detection equipment is the basis to ensure the subsequent detection accuracy. The current calibration methods have the disadvantages of complex calculation, low precision, and poor operability. In order to solve the above problems, the calibration method of binocular camera, the correction method of lens distortion, and the calibration method of projector in the binocular vision system based on surface structured light are studied in this paper. For lens distortion correction, on the basis of analyzing the traditional correction methods, a distortion correction method based on radial basis function neural network is proposed. Using the excellent nonlinear mapping ability of RBF neural network, the distortion correction models of different lenses can be obtained quickly. It overcomes the defect that the traditional correction model cannot adjust adaptively with the type of lens. The experimental results show that the accuracy of the method can meet the requirements of system calibration.

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Zhao, Yang, Jing Bo Gao, Chang Xu, and Chun Fang Zhang. "The Improved Algorithm about Binocular Vision of Flexible Structure in On-Orbit Modal Identification." Advanced Materials Research 989-994 (July 2014): 1766–69. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.1766.

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The modal of large flexible structure with low and close modes hardly computes accurate data in the ground. While binocular stereo vision is valued for non-contact measurement, greater flexibility and higher precision in on-orbit identification method. This paper optimized the binocular vision algorithm. The difference between original and new algorithm, which includes the aiming-point number, the identification time and the memory number was shown. The conclusion manifests that new algorithm can improve the identification accuracy and speed up the identification and provide support for on-orbit modal identification.

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Fan, Di, Yanyang Liu, Xiaopeng Chen, et al. "Eye Gaze Based 3D Triangulation for Robotic Bionic Eyes." Sensors 20, no. 18 (2020): 5271. http://dx.doi.org/10.3390/s20185271.

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Three-dimensional (3D) triangulation based on active binocular vision has increasing amounts of applications in computer vision and robotics. An active binocular vision system with non-fixed cameras needs to calibrate the stereo extrinsic parameters online to perform 3D triangulation. However, the accuracy of stereo extrinsic parameters and disparity have a significant impact on 3D triangulation precision. We propose a novel eye gaze based 3D triangulation method that does not use stereo extrinsic parameters directly in order to reduce the impact. Instead, we drive both cameras to gaze at a 3D spatial point P at the optical center through visual servoing. Subsequently, we can obtain the 3D coordinates of P through the intersection of the two optical axes of both cameras. We have performed experiments to compare with previous disparity based work, named the integrated two-pose calibration (ITPC) method, using our robotic bionic eyes. The experiments show that our method achieves comparable results with ITPC.

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Lai, Xiao-Bo, Hai-Shun Wang, and Yue-Hong Xu. "A Real-Time Range Finding System with Binocular Stereo Vision." International Journal of Advanced Robotic Systems 9, no. 1 (2012): 26. http://dx.doi.org/10.5772/50921.

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To acquire range information for mobile robots, a TMS320DM642 DSP-based range finding system with binocular stereo vision is proposed. Firstly, paired images of the target are captured and a Gaussian filter, as well as improved Sobel kernels, are achieved. Secondly, a feature-based local stereo matching algorithm is performed so that the space location of the target can be determined. Finally, in order to improve the reliability and robustness of the stereo matching algorithm under complex conditions, the confidence filter and the left-right consistency filter are investigated to eliminate the mismatching points. In addition, the range finding algorithm is implemented in the DSP/BIOS operating system to gain real-time control. Experimental results show that the average accuracy of range finding is more than 99% for measuring single-point distances equal to 120cm in the simple scenario and the algorithm takes about 39ms for ranging a time in a complex scenario. The effectivity, as well as the feasibility, of the proposed range finding system are verified.

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Lunghi, Claudia, and Maria C. Morrone. "Early interaction between vision and touch during binocular rivalry." Multisensory Research 26, no. 1-2 (2013): 92. http://dx.doi.org/10.1163/22134808-000s0064.

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FERRIER, NICOLA J., and JAMES J. CLARK. "THE HARVARD BINOCULAR HEAD." International Journal of Pattern Recognition and Artificial Intelligence 07, no. 01 (1993): 9–31. http://dx.doi.org/10.1142/s0218001493000029.

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The ability to dynamically control the imaging parameters such as camera position, focus, and aperture is satisfied through the use of special purpose hardware such as a robotic head. This paper presents the design and control aspects of the Harvard Head, a binocular image acquisition system. We present three applications of the head in vision tasks concentrating on the computation of depth from controlled camera motion.

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Lin, Psang Dain, and Te-tan Liao. "A New Model of Binocular Stereo Coordinate Measurement System Based on Skew Ray Tracing." Journal of Dynamic Systems, Measurement, and Control 126, no. 1 (2004): 102–14. http://dx.doi.org/10.1115/1.1649975.

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Two-CCD binocular stereo vision systems using pinhole model are attracting research interest in many important fields such as 3-D coordinate measurement. However, new system modeling is difficult because of lack of fundamental imaging formation theory. In this paper, in order to measure a 3-D surface, we demonstrate how a binocular stereo vision system can be modeled by the proposed skew ray tracing method to study the geometric relations between the binocular camera images and the 3-D surface. In order to investigate the overall accuracy and resolution of this system, the influence of infinitesimal camera reading errors on measured coordinate errors is determined by sensitivity analysis. Experimental verification demonstrates that the performance of the proposed system is excellent.

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Sui, Bo. "PATH ACCURACY MEASUREMENT OF INDUSTRIAL ROBOT BASED ON BINOCULAR VISION." Chinese Journal of Mechanical Engineering 39, no. 05 (2003): 88. http://dx.doi.org/10.3901/jme.2003.05.088.

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Yang, T. W., K. Zhu, Q. Q. Ruan, and J. D. Han. "Moving target tracking and measurement with a binocular vision system." International Journal of Computer Applications in Technology 39, no. 1/2/3 (2010): 145. http://dx.doi.org/10.1504/ijcat.2010.034743.

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Zou, Xiang Jun, Hai Xin Zou, J. Lu, et al. "Research on Manipulator Positioning Based on Stereo Vision in Virtual Environment." Key Engineering Materials 392-394 (October 2008): 200–204. http://dx.doi.org/10.4028/www.scientific.net/kem.392-394.200.

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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.

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