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Complete software architecture block diagram.

Complete software architecture block diagram.

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Langlois for translating the abstract to French. Finally, I would like to thank my family for being so supportive and for encouraging me to embark,on my endeavors. iii ABSTRACT

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This paper presents the design and development of an interactive system to accomplish the task of visually guided grasping. We focus on human-machine inter-action. Our system provides the user with a simple graphical method to specify the task to the robot. This high level specification is translated into "visual-servo commands". Experiments demons...

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... A two-dimensional histogram is then generated from the (H)ue and (S)aturation channels while the (V)alue channel is discarded. The V channel contains most of the colour information that is sensitive to light changes [20,25,26]. By ignoring the V channel and concentrating on the H and S channels the model becomes more robust to changing light conditions between frames. ...
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In this article a novel approach to visual tracking called the harmony filter is presented. It is based on the Harmony Search algorithm, a derivative free meta-heuristic optimisation algorithm inspired by the way musicians improvise new harmonies. The harmony filter models the target as a colour histogram and searches for the best estimated target location using the Bhattacharyya coefficient as a fitness metric. Experimental results show that the harmony filter can robustly track an arbitrary target in challenging conditions. We compare the speed and accuracy of the harmony filter with other popular tracking algorithms including the particle filter and the unscented Kalman filter. Experimental results show the harmony filter to be faster and more accurate than both the particle filter and the unscented Kalman filter.