Line patterns in palmprint are very complicated because of the low contrast and the heavy noise caused by fine wrinkles and ridges, so it is a challenging task to complete the feature extraction.
由于在线掌纹图象的对比度较低，掌纹中的细小皱纹和乳突纹会形成一定的噪声，掌纹中的线特征的模式十分复杂，因此对掌纹进行线特征提取是一项具有挑战性的研究课题。
参考来源 - 基于掌纹图象的特征提取方法研究2 Extraction line features from offline palmprintA line extraction algorithm based on morphological median pyramid and Law’s template is proposed for offline palmprint.
本文提出一种基于形态中值金字塔和LAW模板的脱机掌纹线特征提取方法。
参考来源 - 基于掌纹图象的特征提取方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
近年来，人们已经提出许多种线特征提取的方法。
Recently, many methods of linear feature extraction were proposed.
由于在线掌纹图象的对比度较低，掌纹中的细小皱纹和乳突纹会形成一定的噪声，掌纹中的线特征的模式十分复杂，因此对掌纹进行线特征提取是一项具有挑战性的研究课题。
Line patterns in palmprint are very complicated because of the low contrast and the heavy noise caused by fine wrinkles and ridges, so it is a challenging task to complete the feature extraction.
介绍图像中的点、线、面的特征提取方法。
This article introduces the methods of distilling characters of dot line and surface in image.
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