Karen J. Reynolds

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Virtual reality (VR) surgical simulations are among the most difficult software applications to develop mainly because of the type of user interactions that they must support. Surgery typically includes precise cutting of often intricate structures. Modelling these structures and accurately simulating their response to user interaction requires many(More)
The development and validation of a virtual generic 3D model of the distal femur using computer graphical methods is presented. The synthesis of the generic model requires the following steps: acquisition of bony 3D morphology using standard computed tomography (CT) imaging; alignment of 3D models reconstructed from CT images with a common coordinate(More)
In this paper, we propose a three stage technique for cardiac arrhythmia classification. This method includes a de-noising module, a feature extraction module and a classification module. In the first module we investigate the application of a FIR least squares filter for noise reduction of the electrocardiogram (ECG) signals. The feature extraction module(More)
BACKGROUND This study evaluates whether surgical experience influences technical competence using the Flinders sinus surgery simulator, a virtual environment designed to teach nasal endoscopic surgical skills. METHODS Ten experienced sinus surgeons (five consultants and five registrars) and 14 novices (seven resident medical officers and seven(More)
In this paper, we improve our previous work to recover the user interacting virtual object's contact surface features based on the recorded visual-haptic data for replaying haptic feeling. First the haptic stylus motion is tracked from the recorded screenshot images of the haptic virtual environment (HVE). The virtual object's contact surface can then be(More)