According to the characteristic of abnormal peak and abnormal slant-concave flaw, an automatic extraction algorithm of projection distance was presented individually.

针对峰值异常和斜凹形异常缺陷分别提出了一个缺陷到射线穿透焊件最薄处的投影距离自动提取算法。

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By extraction and selection of the cell shape feature, using the least distance method and shape method primarily identify and classify the lung cell.

通过形态特征的提取和选择，利用最小距离法和形态法对肺部细胞进行了初步的识别分类。

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The issue involves two aspects: the extraction of characteristics, and the measurement of the distance between two characteristics vectors, i. e. the problem of characteristic match.

这就涉及两个方面问题，一、如何提取特征，二、特征向量间距离如何测量，也就是特征如何匹配的问题。

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