This paper introduces a new whole binarization method by using image gray statistical characteristic value as threshold.

本文给出了一种利用图像灰度统计特征值为阈值的全局二值化方法。

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The most important random factors in the earthquake disaster prediction is analyzed, the probabilistic model and statistical characteristic value of the primary random variables are also put forward.

同时，分析了储油罐震害预测中影响较大的随机性因素，并建议了主要随机变量的概率模型和统计特征值的选取方法。

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Based on the statistical data for the sufficient degree of 137 sand bodies in Jiyang sag to calculate the characteristic value, and make the distribution map of factor loading.

根据济阳坳陷137个砂体充满度的统计数据，计算了特征值，作出了因子载荷分布图。

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