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The 3D shape of radar beams is drawn by direct volume rendering (DVR) algorithm based on 3D texture. Two procedures based on graphical processing unit (GPU) are explored to optimize the algorithm. In order to probe into the internal details of radar beams, three volume clipping methods are proposed, geometry-guided clipping, is surface DVR and exploded view based on texture-space transformation, which...
This paper presents a new framework for simple, interactive volume exploration of biological datasets. We accomplish this by automatically creating dataset-specific transfer functions and utilizing them during direct volume rendering. The proposed method employs a K-Means++ clustering algorithm to classify a two-dimensional histogram created from the input volume. The classification process utilizes...
Confocal fluorescence endomicroscopy is an emerging endoscopic modality, which allows in vivo microscopic imaging of the mucosal layer of living tissues. In this paper, we will present a low-cost real-time 3D imaging system using an endomicroscope. In the system, the volumetric image data are automatically captured by continuously scanning the surface and subsurface tissue structures without removing...
Three-dimensional (3D) seismic data visualization is a critical technique in 3D seismic data interpretation. In the paper, the characteristics of seismic data, the technology of 3D data sets visualization and the technology of 3D graphics construction and display using interactive data language (IDL) were discussed. The author proposed new solutions for 3D seismic data visualization, moreover expounded...
As an effective tool for revealing internal structures, direct volume rendering has been widely used in 3D medical image visualization. However, its quality strongly depends on the transfer function design in the rendering process of mapping data values to the optical properties. In this paper, a novel and intuitive method for transfer function design based on the feature variation curve is proposed...
Although direct volume rendering is established as a powerful tool for the visualization of volumetric data, efficient and reliable feature detection is still an open topic. Usually, a tradeoff between fast but imprecise classification schemes and accurate but time-consuming segmentation techniques has to be made. Furthermore, the issue of uncertainty introduced with the feature detection process...
3D visualization on electromagnetic environment (EME) is one of the most important research fields in virtual battle space. This paper presents a novel approach on visualizing the 3D EME by direct volume rendering on 3D globe. 3D power volumetric data is calculated based on the Longley-Rice radio propagation model(Irregular Terrain Model, ITM), which takes into account the effects of irregular terrain...
Maximum intensity projection (MIP) is one of the most common methods for the visualization of volumetric data. MIP works by traversing all viewing rays and finding the maximum data value along each of them. The main limitation of MIP is that it cannot adequately depict the spatial relationships of overlapping tissues. An approach has been proposed to eliminate this drawback: local maximum intensity...
This paper describes the Medical Visualizer, a real-time visualization system for analyzing medical volumetric data in various virtual environments, such as autostereoscopic displays, dual-projector screens and immersive environments such as the CAVE. Direct volume rendering is used for visualizing the details of medical volumetric data sets without intermediate geometric representations. By interactively...
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