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Stereo visual servoing from straight lines

Abstract : Closing the control loop of a manipulator robot with vision feedback is widelyknown. It concerns nowadays all areas of robotics. Such a return can make a comparison between a desired state and current state, using visual measurements. The main objective of this doctoral thesis is to design several types of kinematic control laws for stereo visual servoing. It strongly involves the formalism of the task function which is a well-known and useful mathematical tool to express the visual error as a function of state vectors.We have investigated the decoupling between the rotational and translational velocities control laws together with the epipolar constraint with a stereo visual feedback.That is why, the visual measurements and features used in this thesis are the 3Dstraight lines.The interests of this type of visual features rely on the robustness against the noise, and the possibility to represent straight lines or other features like points or planes pairs by the Plücker coordinates, as a 3D straight line can be represented as well by two points or the intersection of two planes. This makes all the control laws designed in this thesis valid for another visual features like points
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Submitted on : Monday, November 12, 2012 - 5:12:09 PM
Last modification on : Tuesday, August 21, 2018 - 4:51:04 PM
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  • HAL Id : tel-00750946, version 1



Fadi Alkhalil. Stereo visual servoing from straight lines. Optics / Photonic. Université de Strasbourg, 2012. English. ⟨NNT : 2012STRAD026⟩. ⟨tel-00750946⟩



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