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Partially Decoupled Image-Based Visual Servoing Using Different Sensitive Features
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DOI：10.1109/TSMC.2016.2641951.png)
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Abstract
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A new image-based visual servoing method based on sensitive features is presented to separately realize the position control and orientation control. Line features are used for the orientation control because of their sensitivities to rotational motions. Point features and area size features are employed to realize the position control since area size features are very sensitive to the objects' depths. The translations resulting from rotational motions are introduced into the position control as the compensation in order to eliminate the influence of the camera's motions on the point features. The depths for all active features are estimated via interaction matrices, features variations, and the executed camera motions. The proposed method can keep the tracked objects in the camera's field of view in the visual servoing process. In addition, the determination methods of the interaction matrices for point, line, and area size features are proposed. Comparing to the traditional method, the proposed determination method of the interaction matrix for line is independent from the parameters of the plane containing the line. Experimental results verify the effectiveness of the proposed methods.
Keywords:
Depth estimation
interaction matrix
sensitive features
visual control
visual servoing
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