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Industrial computed tomography (ICT) is a device which examines the internal structures of industrial components without destroying them. However, lots of artifact and noise usually exist in the industrial CT image and troubles are brought on the visualization and classification of industrial CT volume data at the same time. Image segmentation for Industrial CT images is one of the most important...
Industrial CT, by which the internal structures of industrial components are examined without destruction, is an useful tool in construction engineering and manufacturing. However, lot of artifacts and noise are usually generated in the industrial CT image and troubles are brought synchronously on the visualization and classification of industrial CT volume data. The goal of our work is to decrease...
In the medical domain, digital images are produced in ever-increasing quantities and used for diagnostics and therapy. However, it is not sufficient to capture the semantic content of an image and difficult to provide good medical image retrieval results according to the predefined categories in the medical domain for less using the medical knowledge. This paper proposes a semantic approach by focusing...
It is necessary to incise a 3D object to obtain detail structure information inside in the process of developing 3D medical visualization system. VC++6.0 with VTK toolbox are used to reconstruct 3D images using the CT slice sequence in DICOM format. Cuboids that can be controlled to zoom, move or circumrotate by mouse and used for clipping the object of 3D object. The technique can realize the real...
The classification step used to assign the appropriate opacity to each voxel is very important in the volume rendering. A new classification algorithm for volume data, which is based on minimum cross entropy, is proposed in this paper. Firstly, the volume data is constructed from a series of sequential two-dimension industrial CT images and the histogram of the volume data is computed. Secondly, the...
In the volume rendering, the classification step is used to determine voxel visibility and plays an important role. In this paper, a new classification algorithm, which is based on moment of histogram of volume data, is proposed for volume rendering. Firstly, the histogram of volume data is partitioned into different subsections by the number of object classes, which is developed through calculating...
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