Abstract
This paper put forward the concepts of breadth-oct-tree and depth-oct-tree.It analyzed their logic structures and storage structures,which were applied in 3D data set visualization.Depth-oct-tree was used in LOD volume rendering algorithm which was tested on a sismic wave data set.Compared with the traditional method,the new algorithm was much faster.On the contrary,the traditional method cannot be applied in PCs due to the large amount of time and space required.The results indicate that the new method can improve the performance of volume rendering.Especially,combining the whole and part volume rendering method,the speed was higher and more elaborated observation was achieved.
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