Xianliang Wu

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An explicit fourth-order finite-difference time-domain (FDTD) scheme using the symplectic integrator is applied to electromagnetic simulation. A feasible numerical implementation of the symplectic FDTD (SFDTD) scheme is specified. In particular, new strategies for the air–dielectric interface treatment and the near-to-far-field (NFF) transformation are(More)
A method for feature selection in visual simultaneous localization and mapping (SLAM) is presented based on the potential data association cost. It is put into practice through a mechanism termed predictive virtual matching test, which measures the goodness of any new feature by examining the predictive repeatability and compatibility with the other(More)
Echocardiography is a potential alternative to X-ray fluoroscopy in cardiac catheterization given its richness in soft tissue information and its lack of ionizing radiation. However, its small field of view and acoustic artifacts make direct automatic segmentation of the catheters very challenging. In this study, a fast catheter segmentation framework for(More)
A high-order symplectic finite-difference time-domain (SFDTD) scheme using the diagonal split-cell model is presented to analyze electromagnetic scattering of the curved three-dimensional perfectly conducting objects. On the one hand, for the undistorted cells, the fourth-order accurate spatial difference is employed. On the other hand, for the completely(More)
Using the three-order symplectic integrators and fourth-order collocated spatial differences, a high-order symplectic finite-difference time-domain (SFDTD) scheme is proposed to solve the time-dependent Schrödinger equation. First, the high-order symplectic framework for discretizing a Schrödinger equation is described. Then the numerical stability and(More)
(2014) A fast catheter segmentation and tracking from echocardio-graphic sequences based on corresponding X-ray fluoroscopic image segmentation and hierarchical GRAPH modelling. Refereed: No ? c 2014 IEEE " Disclaimer UWE has obtained warranties from all depositors as to their title in the material deposited and as to their right to deposit such material.(More)