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| | Wavelet based image order rendering algorithm was presented by Gross and Lippert in 1997. But in its realization, the definition of differential sampling parameter and data structure given by Gross and Lippert need to be consulted. Besides, the algorithm needs huge storage when dealing with large scale 3D data sets. Here investigated is improved wavelet based image order rendering algorithm by using 3D CT medical data. The paper, first, describes the key technologies of wavelet based image order renderin... | | 以三维医学 CT数据为实验对象 ,描述基于小波的图像序绘制的关键技术 :物质分类、转换函数、体数据的小波表示、明暗计算及体绘制积分的计算 .修正现有文献中差分因子的定义 ,由此提出新的数据结构 ,阐述利用同一光线上相邻抽样点的相关性构造数据结构的技术 .给出简化的明暗计算方法 .以重构三维数据场代替重构光亮度场 ,提出基于小波的图像序绘制的改进算法 .最后 ,通过实例检验了有关绘制算法的实用性能 | | 文摘来源 | |   |
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