NOTE: the size of the document being used for testing did not generate significant differences in average response times, but we did see greater variance in results.

注意：用于测试的文档的大小不会对平均响应时间产生很大的影响，但得出的结果有很大差别。

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The average size is 3,131 square feet, with a standard deviation of 655 square feet. (Standard deviation is a statistical measure of variance.)

平均大小为 3,131 平方英尺，标准偏差为 655 平方英尺（标准偏差是一个描述差异的统计量度）。

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First, we standardized the size, variance of gray scale and mean value of gray scale of the motor vehicle plate images.

首先，对机动车号牌图像进行大小、灰度方差、灰度均值的标准化处理。

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