Xiangwei Zhang

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A computer-aided diagnosis (CAD) system to detect small-size (from 2 mm to around 10 mm) pulmonary nodules in helical CT scans is developed. This system uses different schemes to locate juxtapleural nodules and non-pleural nodules. For juxtapleural nodules, morphological closing, thresholding and labeling are performed to obtain volumetric nodule(More)
The tasks of extracting the 3D geometric features such as lines, corners, and planes play an important role in 3D modeling. This paper presents a novel 3D planar extracting algorithm based on fuzzy clustering. Our objective is focused on developing a set of techniques for the automatic extraction of 3D indoor models with robots, which is motivated by the(More)
A novel method called local shape controlled voting has been developed for spherical object detection in 3D voxel images. By introducing local shape properties into the voting procedure of normal overlap, the proposed method improves the capability of differentiating spherical objects from other structures, as the normal overlap technique only measures the(More)
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