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随着现代三维图像显示技术的发展,使用体视学方法从二维截面估计三维几何似乎越来越显得多余了。本文将讨论这两种途径的局限性并概述两者在实际应用中的优点。对场和特征物参量及数据简约问题进行了讨论。结论是,在大量的应用中,体视学方法是表征不规则三维几何的最有效途径。当需要表征比较复杂的参数如形状、排列或尺寸分布时,应当优先采用三维直接测量手段。从二维截面分析获得的参数,对于比较研究、经验相关性分析和“指纹”识别式描述则是非常有用的。
With the development of modern three-dimensional image display technology, the use of stereology to estimate the three-dimensional geometry from two-dimensional cross-sections seems to be more and more superfluous. This article discusses the limitations of both approaches and outlines the benefits of both in practical applications. Field and feature parameters and data are discussed briefly. The conclusion is that in a large number of applications, stereological methods are the most effective way to characterize irregular three-dimensional geometry. When the need to characterize more complex parameters such as shape, arrangement or size distribution, should be given priority to the use of three-dimensional direct measurement. The parameters obtained from 2D cross-section analysis are very useful for comparative studies, empirical correlation analysis, and “fingerprinting” discriminant descriptions.