scholarly journals Hybrid Multi-camera Visual Servoing to Moving Target

Author(s):  
Hanz Cuevas-Velasquez ◽  
Nanbo Li ◽  
Radim Tylecek ◽  
Marcelo Saval-Calvo ◽  
Robert B. Fisher
Robotica ◽  
2003 ◽  
Vol 21 (6) ◽  
pp. 615-625 ◽  
Author(s):  
M-C. Tsai ◽  
K-Y. Chen ◽  
M-Y. Cheng ◽  
K.C. Lin

Due to the increasing popularity of surveillance and security systems, the problem of automatically tracking a moving target by visual servoing has become a research topic deserving more investigation. Nonetheless, the success of tracking a moving target in real-time primarily depends on the performance of the motion detection techniques employed. This paper addresses visual tracking control of an unknown target that could be motional arbitrarily in the scene. A pan-tilt mechanism is used to gain the flexibility of tracking, and the so-called region-based matching method and motion energy method are modified and proposed in this study to detect a moving target based on the consecutive images acquired. A visual servo control scheme that adopts proportional control in the visual loop for reducing the servo lagging is proposed using output disturbance feedforward compensation. Experimental results show the superiority of the proposed method in achieving high system bandwidth and tracking accuracy.


2015 ◽  
Vol 772 ◽  
pp. 512-517 ◽  
Author(s):  
Yu Cui ◽  
Kenta Nishimura ◽  
Yusuke Sunami ◽  
Mamoru Minami ◽  
Takayuki Matsuno ◽  
...  

Visual Servoing to Moving Target with Fixed Hand-Eye Cameras Mounted at Hand of Robot is Inevitably Be Affected by Hand Dynamical Oscillations, then it is Hard to Keep Target at the Centre of Camera’s Image, since Nonlinear Dynamical Effects of Whole Manipulator Stand against Tracking Ability. in Order to Solve this Problem, an Eye-Vergence System, where the Visual Servoing Controller of Hand and Eye-Vergence is Controlled Independently, so that the Cameras can Observe the Target Object at the Center of the Camera Images through Eye-Vergence Functions. the Eyes with Light Mass Make the Cameras’ Eye-Sight Direction Rotate Quickly, so the Track Ability of the Eye-Vergence Motion is Superior to the One of Fixed Hand-Eye Configuration. in this Report Merits of Eye-Vengence Visual Servoing for Pose Tracking Have been Confirmed through Frequency Response Experiments.


2013 ◽  
Vol 2013 (0) ◽  
pp. _G011014-1-_G011014-5
Author(s):  
Pengyu LIU ◽  
Sen HOU ◽  
Koichi MAEDA ◽  
Mamoru MINAMI ◽  
Akira YANOU

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