It has an operating process which includes graph acquiring, preprocessing, pattern extracting, searching and explaining, graph combining and output.
它有一个包括图形获取、预处理、模式抽取、搜索与解释、图形复合与输出等环节的工作过程。
Pattern matching is a powerful and elegant way of extracting information from objects, when used appropriately.
模式匹配在使用恰当时是一个强大的，优雅的从对象中抽取信息的方式。
Extracting or construction of the invariant features is one of the key technologies in the field of pattern recognition and computer vision.
图像不变量特征的提取与构造是模式识别和计算机视觉领域中的关键技术之一。
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