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Wearable digital self-tracking technologies for monitoring individuals' health condition have become more accessible to the public in recent years with the development of connected portable devices, such as smart phones, smart watches, smart bands, and other personal biometric monitoring devices. Mining behavioural patterns from such wearable data along with other available sensory data, has the potential...
This paper presents a novel two-level scheme for adaptive active visual servoing of a mobile robot equipped with a pan camera. In the lower level, the pan platform carrying an onboard camera is controlled to keep the reference points lying around the center of the image plane. On the higher level, a switched controller is utilized to drive the mobile robot to reach the desired configuration through...
In this paper, a kind of rectification technique for stereo image pairs is proposed and the related formulae are derived, which mainly consists of geometric distortion correction, reprojection transformation by central projection, zooming transformation and vertical translation transformation. And based on it, a method of depth measurement with desktop binocular camera vision system is realized. Firstly,...
This paper presents a novel visual servoing strategy for a nonholonomic mobile robot, which is based on a new motion estimation technique. By taking into account the planar motion constraint of mobile robots, the proposed motion estimation technique does not require the estimation and decomposition of the homography or fundamental matrix, and it dose not cause any ambiguity problems. Moreover, the...
This paper presents a novel two-level scheme for active visual servoing of a mobile robot equipped with a pan camera. In the lower level, the pan platform carrying an on-board camera is controlled to keep the target points lying around the center of the image plane. On the higher level, a switched controller is utilized to drive the mobile robot to reach the desired configuration through image feature...
Ball-pressure test has been widely implemented as a method for testing heat endurance of non-metallic materials of electrotechnical equipments. The test result is determined by the valid diameter of indentation at the tangent points, not the complete indentation. At present most tests are based on experience, and are subjected to various problems due to personal difference. In this paper, a cost-efficient...
For a monocular camera-based mobile robot system, an adaptive visual regulation controller is proposed in this paper to asymptotically stabilize the robot to its desired position/orientation, in which range sensor is not required and unknown camera extrinsic parameters are considered as well. First, based on the relationship between the robot frame and the camera frame, kinematic model of the monocular...
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