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Ultrasound-guided medical interventions are broadly applied in diagnostics and therapy, e.g., regional anesthesia or ablation. A guided intervention using 2-D ultrasound is challenging due to the poor instrument visibility, limited field of view, and the multi-fold coordination of the medical instrument and ultrasound plane. Recent 3-D ultrasound transducers can improve the quality of the image-guided...
During ultrasound-guided needle interventions, low signal-to-noise ratio and poor needle visibility limit the performance of automated detection systems. This becomes even more challenging when the needle is inserted at higher angles with respect to the ultrasound probe. For very large insertion angles, the needle becomes virtually invisible in the ultrasound data and medical specialists need to find...
Basic and compound pose invariant geometric features are explored to conduct pre-alignment, down sampling, and outlier removal to improve the speed and accuracy of Iterative Closest Point (ICP) registration on dense 3D laser scanning data for metallic part modeling. Rectification of planar surfaces, which are segmented from point normals and matched on similarity of clustered viewpoint feature histogram...
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