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目标特征指导的多分辨率体绘制算法

DOI: 10.11834/jig.20140214

Keywords: 体绘制|海量数据|多分辨率|目标特征

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Abstract:

目的多分辨率体绘制是解决海量数据体绘制的一种有效方法。但对于数据散乱分布、同质区域较小的体绘制数据(比如物探领域的地震信号数据),传统的基于香农熵或均方差的多分辨率方式均难以有效实现降低数据量的效果,为此提出了一种基于目标特征的多分辨率体绘制方法。方法以数据体中的目标特征为指导,适当降低非目标区域的分辨率,在尽可能不丢失其目标区域信息的情况下,实现有效的多分辨率体绘制。结果本文方法能够在目标保证数据量的前提下,尽可能地通过丢弃非目标区域的信息量,进而保护数据体的关键信息,以得到较好的绘制效果。结论实验结果表明,本文方法与传统方法相比能够更好地保证关键区域绘制效果,同时进一步地降低用于绘制的数据量。

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