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estimate the orientation of fingerprint
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指纹识别的一个应用实例.利用database来存储指纹的特征值与输入的指纹特征值比较找出近似的.-The basic idea is to combine both global and local information of fingerprint. Given a threshold to detect the given fingerprint with the fingerprint in database
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基于纹线的指纹分类方法,使用主线条作为分类判据-Fingerprint Classification Using Orientation Field Flow Curve
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for detecting fingerprint core using orientation field estimation
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指纹图像预处理与特征提取是指纹识别的前提。提出一套基于方向滤波与模糊数学方法的指纹图像
预处理算法, 并给出了指纹特征提取及其后处理算法。指纹图像预处理首先求出指纹的方向场, 然后根据方向
场进行滤波, 最后用模糊数学方法得到二值化图像。指纹特征提取则先从细化指纹图中得到特征点, 并依据伪
特征点的脊线与角度特征剔除伪特征点。-Fingerprint image preprocessing and feature extraction fingerprint identificati
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it can be used to estimate the orientation of fingerprint images
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指纹增强的matlab实现源代码,包含多个matlab函数文件。-ridgesegment.m identifies ridge-like regions of a fingerprint image. It also normalises the intensity values of the image.
ridgeorient.m estimates the local orientation of ridges in a fingerprint.
plotridgeorient.
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指纹分类是针对大型指纹库的一个重要的索引方式, 可以有效地提高指纹匹配的效率. 指纹类型的不同表现为指纹纹
理结构的差异, 而指纹的方向场则可以有效地描述纹理结构的差异. 同一类型指纹不同区域上方向角结构的差异以及相邻区域
间方向角结构的联系可以视作一个马尔可夫随机场. 本文利用嵌入式隐马尔可夫模型对指纹方向场进行建模分析, 通过合理地
抽取指纹的类型特征, 构造观察向量、进行建模训练, 然后利用训练好的马尔可夫模型进行匹配, 最终提出并实现了一种新的鲁
棒性强且精度较高的指纹分
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Most of the approaches proposed in the literature for singularity detection operate on the fingerprint
orientation image. In the
rest
of
this
section,
the
main
approaches are coarsely classified
and a subsection is dedicated
to ea
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计算指纹方向场的代码-code for computing orientation of fingerprint
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calculate fingerprint ridge orientation of gabor filter enhancement of fingerprint image.
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To match a Fingerprint image with a one already stored in the database.
A fingerprint image essentially consists of a set of minutiae on the plane.
Minutiae are the terminations and bifurcations of ridge lines in a fingerprint image.
A new appro
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