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Ultrasound (US) probes have been used as guiding tools for Computer Assisted Orthopedic Surgeries (CAOS) [1]. Because of the US data uncertainty, the process of recognition - the localization of regions of interest in the image-requires a registration to a more precise, but invasive, imaging modality such as Computed Tomography (CT). A millimetric precision and a real-time processing are intraoperative...
In order to automatically guide orthopedists during the interventions, computers need to localize and track bones to be operated. Localization may be done thanks to a calibrated ultrasound (US) probe for non invasive Computer Assisted Orthopedic Surgery (CAOS) instead of implanting trackers in the bone. In this approach, rigid registration is required for the transfer and update of the plan. In this...
In This paper, a more simple approach for radar shadow extracting from SAR images is proposed. It's based on 1D geometry projection using a digital elevation model (DEM) and considering the corresponding georeferenced SAR image. The DEM to be processed is firstly rotated into the radar geometry so that each row would be suitable for a radar line of sight. Then, the extraction of shadow would be done...
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