نتایج جستجو برای: position based visual system

تعداد نتایج: 4853550  

2017
Sneha K S

The lips and mouth region are the main visual parts of the human speech system; these parts hold the most visual speech information. A few techniques have been recommended to perceive lip tracking with the focus on segmentation of lip regions or extraction of lip contours. Commonly used approaches for lip tracking are Image-based methods. In the Image based methods a set of characteristic point...

Journal: :ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences 2016

2000
François Chaumette Ezio Malis

We describe in this paper potential problems that may appear in image-based visual servoing when the initial camera position is far away from its desired position. We show by concrete examples that local minima or a singularity of the image Jacobian can be reached during the servoing. We then recall recent results obtained to avoid these drawbacks. It consists in combining visual features obtai...

2000
François Chaumette Ezio Malis

We describe in this paper potential problems that may appear in image-based visual servoing when the initial camera position is far away from its desired position. We show by concrete examples that local minima or a singularity of the image Jacobian can be reached during the servoing. We then recall recent results obtained to avoid these drawbacks. It consists in combining visual features obtai...

2011
W. Zhu M. C. Leu X. F. Liu

The development of a low-cost motion capture based landmine detection training system is presented in this paper. Two Nintendo Wii Remotes (Wiimotes) are used to form a stereo vision system to obtain the position and orientation of the simulated physical landmine detector. The position data is used to compute the distance between the detector and a virtual mine, and the distance is used to gene...

Journal: :IEEE Trans. Robotics and Automation 1996
Seth Hutchinson Gregory D. Hager Peter I. Corke

This paper provides a tutorial introduction to visual servo control of robotic manipulators. Since the topic spans many disciplines our goal is limited to providing a basic conceptual framework. We begin by reviewing the prerequisite topics from robotics and computer vision, including a brief review of coordinate transformations, velocity representation, and a description of the geometric aspec...

2004
Gregory D. Hager

This article provides a tutorial introduction to visual servo control of robotic manipulators. Since the topic spans many disciplines our goal is limited to providing a basic conceptual framework. We begin by reviewing the prerequisite topics from robotics and computer vision, including a brief review of coordinate transformations, velocity representation, and a description of the geometric asp...

Journal: :مهندسی صنایع 0
کامران رضایی دانشگاه تهران محمد محسن صادق عمل نیک دانشگاه تهران سروش لاجوردی دانشگاه تهران سلمان نظری شیرکوهی دانشگاه تهران

in this paper, a mechanized system for self-assessment based on process-oriented approach of iso 9004:2000 has been developed. to design of this mechanized system, the expert system has been used as in providing the assessment and scoring questions the experts’ knowledge, head auditors of quality management system, has been used and this knowledge has been saved in the access software database....

2013
Sorin M. Grigorescu Claudiu Pozna

In this paper, a new object tracking system is proposed to improve the object manipulation capabilities of service robots. The goal is to continuously track the state of the visualized environment in order to send visual information in real time to the path planning and decision modules of the robot; that is, to adapt the movement of the robotic system according to the st...

2008
H. J. Lee M. C. Lee

In this study, stereo vision system is applied to visual servoing of a mobile manipulator. The robot can recognize a target and compute the 3D position of the target by using a stereo vision system. A stereo vision system enables the robot to find the position of a target without additional information while a monocular vision system needs properties such as geometric shape of a target. Many al...

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