Results 171 to 180 of about 1,576,564 (201)

Characteristic Line of Planar Homography Matrix and Its Applications in Camera Calibration

18th International Conference on Pattern Recognition (ICPR'06), 2006
In this paper, we employ the concept of characteristic line to show some useful properties of planar homography matrix. These properties relate the characteristic line of a planar homography matrix with Euler angles of the planar pattern. Based on the characteristic line, a new method of linear camera calibration is proposed and a strategy to select ...
Jianhua Wang, Yuncai Liu
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A new algorithm for linearly reconstructing the infinite homography matrix and intrinsic parameter matrix of a camera

Proceedings 7th International Conference on Signal Processing, 2004. Proceedings. ICSP '04. 2004., 2005
By deriving the formula to directly determine the infinite homography matrix from a pair of fundamental matrixes, a new linear restoration algorithm of the homography matrix of the plane at infinity from feature point-pair sets extracted from three views under a pair of linearly independent motions is developed in this paper.
null Zhonggen Yang, null Lei Ren
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A Fast Video Mosaic Algorithm Based on Optimal Homography Matrix

CICTP 2012, 2012
Mosaic technology is widely used in traffic surveillance. In this paper, we propose a fast video mosaic algorithm based on optimal homography matrix. First, we extract characteristic feature points using SURF method. Second, we match corresponding feature points using NN (Nearest Neighbor) and RANSAC (Random Sample Consensus) method.
Wen Wang, Chunyu Zhang, Li Sang, Yong Su, Keyou Guo   +4 more
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Study of Monocular Measuring Technique Based on Homography Matrix

2011
This paper presents a real-time and effective measuring technique to determine the location of moving object on a fixed plane using homography matrix with a single camera. Based on OpenCV, this paper firstly calibrates the camera’s intrinsic parameters, and then obtains homography matrix between the plane of moving object and the image through specific
Jia-Hui Li, Xing-Zhe Xie
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Iterative Learning Control for Visual Servoing with Unknown Homography Matrix

2007 IEEE International Conference on Control and Automation, 2007
An iterative learning control scheme for robot planar motion visual servo with an arbitrarily mounted camera is presented in the paper. In our previous work, it has been proved that, when the image plane and the motion plane are parallel with a constant but unknown image Jacobian matrix, an iterative learning control law with a Nussbaum learning gain ...
null Daqing Yi, null Jian Wu, null Ping Jiang   +2 more
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Visual measurement of the bearing diameter based on the homography matrix and partial area effect

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2023
A measurement method based on the homography matrix and partial area effect is studied to improve the precision of the visual measurement of the bearing size. Firstly, the camera is calibrated to obtain its distortion coefficient, and the image is corrected for distortion. Secondly, the relationship between the pixel plane and the bearing imaging plane
Benchi Jiang, Xin Du, Lulu Wu, Jiawang Zhu   +3 more
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Simulation Design of Visual Servo Based on Homography Matrix Decomposition

Applied Mechanics and Materials, 2012
A visual servo simulation model for puma560 robot based on homography matrix decomposition was designed. Utilizing the Robotics Toolbox and Machine Vision Toolbox, the simulation model of the visual servo system was built using the sub-systems in Matlab Simulink.
Xiao Ping Zong, Yue Xia Li, Pei Guang Wang, Wei Dong Liu   +3 more
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Planar surface area transformation using modified homography matrix

Transactions of the Institute of Measurement and Control, 2013
This research targets a problem of planar area size inconsistency after image warping to the top view. An orientation sensor attached to a camera was used to acquire the camera’s orientation in real time. Then, extrinsic parameters derived from the sensor and pre-computed intrinsic parameters were used to generate a homography matrix.
Miti Ruchanurucks, Pongthorn Apiroop, Surangrak Sutiworwan   +2 more
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A Fast Aerial Images Mosaic Method Based on ORB Feature and Homography Matrix

2019 International Conference on Computer, Information and Telecommunication Systems (CITS), 2019
Image mosaic is of great significance for the research of computer vision. However, the environment is constantly changing over time. Accordingly, its image mosaic also needs to be regularly updated to support various applications, including comprehensive improvement of road environment, resolution enhancement and motion detection.
Guiqin Yang, Xing Chang, Zhanjun Jiang
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FVHNet: Homography Matrix Estimation for Virtual Camera

2023 IEEE 14th International Symposium on Parallel Architectures, Algorithms and Programming (PAAP), 2023
Zhiming Hou, Yuanzhouhan Cao
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