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The marching cubes (MC) algorithm is employed to generated triangular meshes for visualizing medical images, sculpture scans and mathematical surfaces. It sequentially traverses cuberille data composed of sampled points of a scalar volumetric data. This paper proposes a propagation-based MC algorithm that uses the open boundary loop concept. The open boundary loop is used to determine adjacent cells...
Several respiratory diseases, such as COPD and asthma, requires periodical checkups and past data comparison. While this kind of analysis is usually done by a medical expert, it depends greatly on the medical expertise and the image quality. Image registration, a technique which compares images volumes automatically using predefined computational algorithms, is a great tool to assist on diagnosis...
Segmentation of the lung is particularly difficult because of the large variation in image quality. A modified Hough transform in combination with a mask creation algorithm can robustly determine synchronous respiratory patterns. The synchronicity restriction is relaxed by applying a greedy active contour algorithm. The respiratory patterns define a point cloud near the lung region boundary representing...
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