向量场是科学和工程中的重要概念，描述物理过程中的方向信息和状态的变化趋势。
Vector field is important conception in science and engineering, which describes directional information of physical procedure and developing trends of states.
本文选取细节点邻域的方向场，细节点，纹线三方面的信息全面地描述细节点的邻域信息，并将特征以三值特征向量的形式存储。
In our algorithm, the direction of minutiae neighborhood field, neighborhood minutiae, neighborhood ridges are used as descriptions. and all descriptions are stored as three-valued feature vectors.
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