Multi-Resolution Volume Rendering Based on Adaptive Bricking LOD

To visualize medical volume data based on multi-resolution volume rendering,we often generate the textures with a uniform threshold or level of details(LOD),but traditional methods are not efficient to deal with large-scale volumetric data.In this paper we propose a multi-resolution texture generation method that uses adaptive LOD,where the LOD is determined by Shannon entropy of the whole volume data with flat bricking.By using a bricking texture reorganization operation,we generate a compressed multi-representation texture.Our method is fully implemented on GPU,and the experimental results demonstrate that our approach with adaptive LOD can achieve overall higher rendering quality for a given memory constraint at a relatively high compression rate of the entire volumetric data.