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Accurate and fast estimation of a target's orientation with inertial/magnetic sensors is widely applied in many Virtual Reality applications. Due to the abrupt movement of targets, the accuracy of the motion estimate degrades. In this paper, we propose a quaternion-based Kalman filter for a multi-sensor system which utilizes a low-cost tri-axis accelerometer, a tri-axis gyroscope and a tri-axis magnetometer...
In this paper, we propose a novel extended-field-ofview (EFOV) imaging algorithm based on the property of motion estimation in quaternion wavelet domain (QWD) for ultrasound images. Firstly, transform the ultrasound video frames into QWD from spatial domain, and the result consists of one magnitude and three phases. Secondly, use two phases to estimate the motion of image sequence derived from the...
In this paper, a new electrical capacitance tomography (ECT) algorithm for real-time reconstruction of images sequence of moving objects passing through a given two dimensional section is presented. The reconstruction method explores the inter-frame correlation that usually exists between the consecutive frames, and uses this information as an additional constraint during the reconstruction of the...
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