Description: 提取指纹图象的 方向场还有ROI。喜欢就下。还可以。-Extraction of fingerprint orientation field there is image ROI. Like on the next. Can also be. Platform: |
Size: 3072 |
Author:sundongxiu |
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Description: 经典的Gabor滤波算法实现，利用指纹的局部特征包括脊线频率和方向通过求卷积实现带通滤波。-Classic Gabor filtering algorithm, using local features, including fingerprint ridge frequency and orientation, through seeking to achieve band-pass filter convolution. Platform: |
Size: 1024 |
Author:heying |
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Description: 用于指纹分割，matlab7.0编写，该分割算法包含求取点方向、块方向以及指纹质量等-For fingerprint segmentation, matlab7.0 preparation, the segmentation algorithm that contains the direction of strike points, block orientation, as well as the quality of fingerprint Platform: |
Size: 3072 |
Author:刘振兴 |
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Description: 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 Platform: |
Size: 7223296 |
Author:Ming |
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Description: 提出一种新的指纹匹配算法.在配准阶段,引入局部方向场匹配,并结合局部细节点拓扑结构匹配以进行指纹对齐 在对齐后的匹配中,首先在两个指纹的细节点集之间进行弹性匹配,得到一个由匹配的细节点对组成的相集,然后以相似集中的细节点做顶点,以各顶点之间的连线为边,为输入指纹和模板指纹组对应的拓扑图进行图匹配 还引入了全局方向场匹配,并与细节点集匹配进行融合,以提高算法的精度.采用FVC2002公布的指纹库进行对比实验,结果证明了算法的有效性.-A new fingerprint matching algorithm. In the registration phase, the introduction of local orientation field matching, combined with the topology of local minutiae matching for fingerprint alignment in alignment after the match, the first two fingerprint minutiae elastic matching between sets, get the details of a matching set of points on the phase composition, and then focus on the details of the points made similar peak to the connection between the vertices for the edge of the input fingerprint and template fingerprint groups corresponding graphs, graph matching also introduces the global orientation field matching, point set match with the details of the fusion to improve the algorithm accuracy. FVC2002 published fingerprint database using comparative experiment results demonstrate the effectiveness of the algorithm. Platform: |
Size: 333824 |
Author:李辉艳 |
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Description: 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 identification is a prerequisite. Proposed a filter based on direction and the method of fuzzy fingerprint image preprocessing algorithm, and gives the fingerprint feature extraction and post-processing algorithms. First find the fingerprint image preprocessing fingerprint orientation field, and then filtered orientation field, and finally fuzzy binary images obtained. Fingerprint feature extraction is to start to get detailed fingerprint feature points and feature points based on pseudo-angle characteristics of the ridge line and remove the false feature points. Platform: |
Size: 355328 |
Author:陆玮 |
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Description: 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.m plots ridge orientations calculated by ridgeorient.
ridgefreq.m estimates the local ridge frequency across a fingerprint image.
freqest.m estimates the ridge frequency within a small block of an image. This is used by ridgefreq.
ridgefilter.m enhances a fingerprint image using oriented filters.
Platform: |
Size: 10240 |
Author:tc |
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Description: 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类方法.-Fingerprint classification is an important index for a large-scale fingerprint database, can effectively improve the efficiency of the fingerprint matching, the different performance of the fingerprint type fingerprint texture differences in the structure, while the direction of the field of the fingerprint can be effectively describe the texture differences in the structure. fingerprint different regions of the same type the direction angle differences in the structure and the adjacent areas between the direction of the angular structure of the contact can be regarded as a Markov Random Field paper embedded hidden Markov model fingerprint orientation field modeling analysis by reasonable to extract fingerprint type characteristics, construct observation vectors, modeling training, and then take advantage of the training good match Markov model eventually proposed and implemented a new robust and high precision fingerprint classification . Platform: |
Size: 452608 |
Author:东方 |
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Description: 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 each family of algorithms.
Platform: |
Size: 529408 |
Author:mah |
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Description: 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 each family Platform: |
Size: 644096 |
Author:mah |
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Description: 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 approach towards fingerprint recognition is to match the distribution and orientation of such points. Platform: |
Size: 16533504 |
Author:willshiny |
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Search - orientation of fingerprint