Efficient encoding and rapid decoding for interactive visualization of large three-dimensional hyperspectral chemical images.
Efficient encoding and rapid decoding for interactive visualization of large three-dimensional hyperspectral chemical images.
复制标题
高效编码和快速解码，用于大型三维高光谱化学图像的交互式可视化。
DOI：
10.1002/rcm.3962
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Reichenbach SE
中科院分区：
文献类型：
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作者：
Reichenbach SE
来自新一代化学成像系统的交互式可视化数据需要高效和可访问的编码。二次离子质谱（SIMS）的新技术产生了具有高空间和光谱分辨率的大型三维高光谱数据集。交互可视化对化学分析很重要，但原始数据集的大小超过了当前典型计算机系统的内存容量，是一个重大障碍。本文报告了一种无损编码方法的开发，该方法具有内存效率，使大型SIMS数据集能够保存在快速存储器中，并支持交互式可视化的快速访问。该方法提供了化学成像应用所需的像素索引，并基于数据的统计特征。该方法使用差分飞行时间来影响质谱运行长度编码，并使用可变长度、字节单位表示方案来表示质谱飞行时间和强度值。实验证明该算法具有较高的压缩率和快速的访问速度。版权所有©2009 John Wiley & Sons， Ltd
Interactive visualization of data from a new generation of chemical imaging systems requires coding that is efficient and accessible. New technologies for secondary ion mass spectrometry (SIMS) generate large three‐dimensional, hyperspectral datasets with high spatial and spectral resolution. Interactive visualization is important for chemical analysis, but the raw dataset size exceeds the memory capacities of typical current computer systems and is a significant obstacle. This paper reports the development of a lossless coding method that is memory efficient, enabling large SIMS datasets to be held in fast memory, and supports quick access for interactive visualization. The approach provides pixel indexing, as required for chemical imaging applications, and is based on the statistical characteristics of the data. The method uses differential time‐of‐flight to effect mass‐spectral run‐length‐encoding and uses a scheme for variable‐length, byte‐unit representations for both mass‐spectral time‐of‐flight and intensity values. Experiments demonstrate high compression rates and fast access. Copyright © 2009 John Wiley & Sons, Ltd.