In this paper, the coherence cube technology and graph thinning technology of image processing are introduced.

简要介绍了相干体技术和细线化技术。

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The first chapter is introduction, mainly discussed the fingerprint identification technology and summarized the problem of the fingerprint classification and the fingerprint thinning.

全文共分四章，第一章是绪论部分，主要是指纹识别技术介绍和指纹分类、指纹细化综述。

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Fingerprint thinning is a key part in the automatic fingerprint identification technology. The fingerprint thinning result has an important influence of the AFIS.

指纹图像细化是自动指纹识别的关键技术之一，图像细化效果对自动指纹识别系统的性能有着重要的影响。

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