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We describean active contour framework with accurate shape and size constraints on the vessel cross-sectional planes to produce the vessel segmentation. It starts with a multiscale vessel axis tracing in a 3D computed tomography (CT) data, followed by vessel boundary delineation on the cross-sectional planes derived from the extracted axis. The vessel boundary surface is deformed under constrained...
We describe a novel appearance model with optimal combined features to produce the accurate vessel segmentation. It starts with investigating a set of multi-scale vessel features, followed by a weighed approach to optimally combine different features. Then the optimally combined features advantage the appearance model to reveal more detailed information of vessel. The novelty of the work lies in the...
This paper presents a novel vision system design for the Rubik's cube robot. The vision system is implemented on an ARM9 platform. The s3c2440 development board was cut to meet hardware system, including the core-board, the bottom board, touch screen, USB camera and other interfaces. The principle of the vision system can be described as follows: Six image of the Rubik's cube are captured by the USB...
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