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NETWORK ADJUSTMENT OF AUTOMATED RELATIVE ORIENTATION FOR A DUAL-CAMERA SYSTEM

K. Y. Lin, Y. H. Tseng, K. W. Chiang
2020 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
However, the scale might not be very accurate, and the error also could exist in the orientation including rotation and translation due to environmental factors such as the illumination and texture.  ...  By taking advantage of the calibrated stereo camera, this system is able to recover the true scale of relative translation without the need from additional sensors.  ...  ACKNOWLEDGEMENTS The authors would acknowledge the supports provided by the Ministry of the Interior.  ... 
doi:10.5194/isprs-archives-xliii-b2-2020-49-2020 fatcat:346xefvzrfe43cku4kmkroebd4

Automatic calibration and neural networks for robot guidance

Balaji Sethuramasamyraja, Masoud Ghaffari, Ernest L. Hall, David P. Casasent, Ernest L. Hall, Juha Roning
2003 Intelligent Robots and Computer Vision XXI: Algorithms, Techniques, and Active Vision  
The navigation system for one of the University of Cincinnati's designs, Bearcat, uses 2 CCD cameras and an image-tracking device for the front end processing of the image captured by the cameras.  ...  The purpose of this paper is to simplify this tedious calibration using an artificial neural network. Image processing is used to automatically detect calibration points.  ...  and weights of a network.  ... 
doi:10.1117/12.515036 fatcat:a3mu3tmqufd2hj3kepwfjrfdpm

Convolutional Neural Network-Based Robot Navigation Using Uncalibrated Spherical Images

Lingyan Ran, Yanning Zhang, Qilin Zhang, Tao Yang
2017 Sensors  
Inspired by [11] , we reformulate navigation as classifying spherical images into a series of rotation categories.  ...  These methods suffer from high computational cost and require stringent labelling and calibration efforts.  ...  ., azimuth rotations of these cameras only lead to a simple two dimensional rotation of their captured images, as shown in Figure 3 .  ... 
doi:10.3390/s17061341 pmid:28604624 pmcid:PMC5492478 fatcat:owcdps6okrfb5olmvzz5b5jkcq

Toward robot-assisted dental surgery: Path generation and navigation system using optical tracking approach

A. Lorsakul, J. Suthakorn, C. Sinthanayothin, W. Tharanon
2009 2008 IEEE International Conference on Robotics and Biomimetics  
The beneath marker recognition algorithm using rotation-invariant neural network and physical method is performed to identify markers.  ...  They are methodology design on tool tip calibration, optical marker recognition, and pose determination using neural networks.  ...  Fig. 8 . 8 Image processing stage Fig. 9 . 9 Rotation angles of T-shaped, L-shaped, and Seven-shaped patterns rotate about X-Axis ( x R ), Y-Axis ( y R ), and Z-Axis ( ) in every 1°.  ... 
doi:10.1109/robio.2009.4913173 dblp:conf/robio/LorsakulSST08 fatcat:rt7skjifjrczfhyga6xpz4x22i

Relative Pose of IMU-Camera Calibration Based on BP Network

Shasha Guo, Jing Xu, Ming Fang, Ying Tian
2017 Modern Applied Science  
There are many applications of the combination of IMU (Inertial Measurements Unit) and camera in fields of electronic image stabilization, enhancement reality and navigation where camera-IMU relative pose  ...  In this paper, a new camera-IMU relative pose calibration method is proposed by establishing a BP neural network model.  ...  This work is supported by the program of Jilin Science and Technology Development Plan (No.20170307002GX).  ... 
doi:10.5539/mas.v11n10p15 fatcat:qcfht4zeiber5balgxtl6ri3ke

A GPS/INS/imaging system for kinematic mapping in fully digital mode [chapter]

Mohamed M. R. Mostafa, Klaus-Peter Schwarz
2000 International Association of Geodesy Symposia  
The two digital cameras capture strips of overlapping nadir and oblique images. The INS/GPS-derived trajectory describes the full translational and rotational motion of the carrier aircraft.  ...  The system consists of a navigation-grade strapdown Inertial Navigation System, two GPS receivers, and two high resolution digital cameras.  ...  and Special Awards from The University of Calgary.  ... 
doi:10.1007/978-3-642-59742-8_54 fatcat:hjvmbuzlsndgfjb7u2gk5uw3n4

NETWORK ADJUSTMENT OF AUTOMATIC RELATIVE ORIENTATION FROM IMAGE SEQUENCES

C. C. Lin, Y. H. Tseng, K. Y. Lin, K. W. Chiang
2018 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
</strong> Recently, Visual Odometry (VO) using cameras for navigation is known as an alternative solution in GNSS-hostile environments.  ...  A traverse is a series of consecutive lines whose ends have been marked in the field and whose lengths and angles have been determined from observations.  ...  ACKNOWLEDGEMENTS The author would acknowledge the financial supports provided by the Ministry of Science and Technology.  ... 
doi:10.5194/isprs-archives-xlii-1-269-2018 fatcat:4gc3ybuemjbzhbo3lce72g3wse

MOBILE STEREO-MAPPER: A PORTABLE KIT FOR UNMANNED AERIAL VEHICLES

J. Li-Chee-Ming, C. Armenakis, R. Lee
2012 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
In this paper, the methods and results for system calibration, including camera, boresight and leverarm calibrations are presented.  ...  Two low-cost consumer digital cameras are calibrated and time-synchronized with the GPS/IMU to provide direct georeferenced stereo vision, while a video camera is used for navigation.  ...  The contributions of the graduate students Mark Post and Tom Yeung, Space Engineering, York University, in the hardware design of the platform are much appreciated.  ... 
doi:10.5194/isprsarchives-xxxviii-1-c22-241-2011 fatcat:jewmvjg2ivgndpst7vc3myrmcu

Simultaneous planning, localization, and mapping in a camera sensor network

Ioannis Rekleitis, David Meger, Gregory Dudek
2006 Robotics and Autonomous Systems  
In this paper we examine issues of localization, exploration, and planning in the context of a hybrid robot/camera-network system.  ...  We solve the local camera-calibration problem by using fiducial markers attached to the robot and by selecting robot trajectories in front of each camera that provide good calibration and field-of-view  ...  In addition, Dimitri Marinakis provided much of the implementation of the communication architecture for the sensor network.  ... 
doi:10.1016/j.robot.2006.05.009 fatcat:qca4h4uxrba3dl75aimntcvttu

IMPLEMENTATION AND EVALUATION OF A MOBILE MAPPING SYSTEM BASED ON INTEGRATED RANGE AND INTENSITY IMAGES FOR TRAFFIC SIGNS LOCALIZATION

M. Shahbazi, M. Sattari, S. Homayouni, M. Saadatseresht
2012 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
As the result, an improvement of 83% in RMS of range error and 72% in RMS of coordinates residuals for PMD camera, over that achieved with basic calibration is realized in independent accuracy assessments  ...  As the calibrating stage, a self-calibration method based on integrated bundle adjustment via joint setup with the digital camera is applied in this study for PMD camera calibration.  ...  As the result of accurate calibration of range errors and efficient integration of navigation data by EKF, an average RMS error of 12 centimeters in positioning has been observed by this system.  ... 
doi:10.5194/isprsarchives-xxxix-b5-51-2012 fatcat:yujzsk543zh7jonr6bwpntr3ty

IMPLEMENTATION AND EVALUATION OF A MOBILE MAPPING SYSTEM BASED ON INTEGRATED RANGE AND INTENSITY IMAGES FOR TRAFFIC SIGNS LOCALIZATION

M. Shahbazi, M. Sattari, S. Homayouni, M. Saadatseresht
2012 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
As the result, an improvement of 83% in RMS of range error and 72% in RMS of coordinates residuals for PMD camera, over that achieved with basic calibration is realized in independent accuracy assessments  ...  As the calibrating stage, a self-calibration method based on integrated bundle adjustment via joint setup with the digital camera is applied in this study for PMD camera calibration.  ...  As the result of accurate calibration of range errors and efficient integration of navigation data by EKF, an average RMS error of 12 centimeters in positioning has been observed by this system.  ... 
doi:10.5194/isprsarchives-xxxix-b5-505-2012 fatcat:4p5x53wxdbeudm7cxhuodtxtf4

Development and Evaluation of a UAV-Photogrammetry System for Precise 3D Environmental Modeling

Mozhdeh Shahbazi, Gunho Sohn, Jérôme Théau, Patrick Menard
2015 Sensors  
The hardware of the system consists of an electric-powered helicopter, a high-resolution digital camera and an inertial navigation system.  ...  The software of the system includes the in-house programs specifically designed for camera calibration, platform calibration, system integration, on-board data acquisition, flight planning and on-the-job  ...  All the authors assisted in data acquisition and fieldworks. Gunho Sohn and Jérôme Théau provided the direction and supervision of this study.  ... 
doi:10.3390/s151127493 pmid:26528976 pmcid:PMC4701242 fatcat:nmark3pfbreyhpvtdlnfebdbbe

A Versatile Method for Omnidirectional Stereo Camera Calibration Based on BP Algorithm [chapter]

Chuanjiang Luo, Liancheng Su, Feng Zhu, Zelin Shi
2006 Lecture Notes in Computer Science  
This study describes a full model of calibrating an omnidirectional stereo vision system, which includes the rotation and translation between the camera and mirrors, and an algorithm implemented with a  ...  The first step we calibrate the camera's intrinsics without the mirrors in order to reduce computational complexity and in the second step we estimate the pose parameters of the CCD camera with respect  ...  Acknowledgement This works is supported by National Science Foundation of P.R. China (60575024).  ... 
doi:10.1007/11760023_56 fatcat:rrtyehqsvngvxktjtutt7h3oqe

Special issue: Omnidirectional vision and camera networks

Peter Sturm, Tomas Svoboda, Seth Teller
2006 Computer Vision and Image Understanding  
Sinha and Pollefeys recover the calibration of a network of pan-tilt-zoom cameras. The automatic camera calibration allows creation of high-resolution mosaics.  ...  The resulting papers span a rather representative range of topics in omnidirectional vision, including camera networks, feature extraction in non-pinhole images, and theoretical aspects of non-traditional  ... 
doi:10.1016/j.cviu.2006.08.001 fatcat:so6hjildcne6jbvagdjedu3e74

High Precision Calibration Algorithm for Binocular Stereo Vision Camera using Deep Reinforcement Learning

Jie Ren, Fuyu Guan, Tingting Wang, Baoshan Qian, Chunlin Luo, Guoliang Cai, Ce Kan, Xiaofeng Li, Zaher Mundher Yaseen
2022 Computational Intelligence and Neuroscience  
Secondly, the internal parameter calibration is completed by solving the antihidden point of the camera light center and the camera distortion value of the camera plane.  ...  The target network is established to adjust the parameters of the value function, and the convergence of the value function is calculated to optimize reinforcement learning.  ...  Acknowledgments is work was supported by Natural Science Foundation of Heilongjiang Province of China under grant no. LH2021F040.  ... 
doi:10.1155/2022/6596868 pmid:35401726 pmcid:PMC8989564 fatcat:fboyxxthdbffrklfq4td4oiy5a
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