该文主要研究海量遥感数据的可视化，针对NASAWorldWind在遥感影像数据处理应用中面临的多景遥感影像之间存在拼接问题．设计基于NASA World Wind的遥感影像处理方案。本方案着眼于单案遥感影像处理，对NASA World Wind多分辨率图层技...该文主要研究海量遥感数据的可视化，针对NASAWorldWind在遥感影像数据处理应用中面临的多景遥感影像之间存在拼接问题．设计基于NASA World Wind的遥感影像处理方案。本方案着眼于单案遥感影像处理，对NASA World Wind多分辨率图层技术进行改进，提出基于单景遥感影像的多分辨率图层技术，从而避免了多景遥感影像处理中的拼接问题。该处理方案有效的避免了多景遥感影像之间的拼接问题，实验证明处理后的遥感影像显示效果良好。展开更多
In order to perform a high-quality interactive rendering of large medical data sets on a single off-the-shelf PC, a LOD selection algorithm for multi-resolution volume rendering using 3D texture mapping is presented, ...In order to perform a high-quality interactive rendering of large medical data sets on a single off-the-shelf PC, a LOD selection algorithm for multi-resolution volume rendering using 3D texture mapping is presented, which uses an adaptive scheme that renders the volume in a region-of-interest at a high resolution and the volume away from this region at lower resolutions. The algorithm is based on several important criteria, and rendering is done adaptively by selecting high-resolution cells close to a center of attention and low-resolution cells away from this area. In addition, our hierarchical level-of-detail representation guarantees consistent interpolation between different resolution levels. Experiments have been applied to a number of large medical data and have produced high quality images at interactive frame rates using standard PC hardware.展开更多
文摘该文主要研究海量遥感数据的可视化，针对NASAWorldWind在遥感影像数据处理应用中面临的多景遥感影像之间存在拼接问题．设计基于NASA World Wind的遥感影像处理方案。本方案着眼于单案遥感影像处理，对NASA World Wind多分辨率图层技术进行改进，提出基于单景遥感影像的多分辨率图层技术，从而避免了多景遥感影像处理中的拼接问题。该处理方案有效的避免了多景遥感影像之间的拼接问题，实验证明处理后的遥感影像显示效果良好。
基金the Advanced Project Foundation between China and France(PRA SI03-02).
文摘In order to perform a high-quality interactive rendering of large medical data sets on a single off-the-shelf PC, a LOD selection algorithm for multi-resolution volume rendering using 3D texture mapping is presented, which uses an adaptive scheme that renders the volume in a region-of-interest at a high resolution and the volume away from this region at lower resolutions. The algorithm is based on several important criteria, and rendering is done adaptively by selecting high-resolution cells close to a center of attention and low-resolution cells away from this area. In addition, our hierarchical level-of-detail representation guarantees consistent interpolation between different resolution levels. Experiments have been applied to a number of large medical data and have produced high quality images at interactive frame rates using standard PC hardware.
