Description: 在指纹特征提取中，结合方向图和图像局部灰度方差对指纹图像进行分割，然后再进行阈值分割去处边缘效应得出较好的分割结果。-In the fingerprint feature extraction, the combination of pattern and image local variance of gray-scale fingerprint image segmentation, and then conducted threshold segmentation edge effects come to a better place for the segmentation results. Platform: |
Size: 67584 |
Author:zizou |
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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: 介绍并实现了一套完整的指纹图像预处理方法,通过剩余块处理和平滑方法改进了传统
的指纹图像分割算法 使用方向匹配的方法对指纹图像方向块进行方向滤波完成图像增强 并除去细化后存在的短线和毛刺。该算法对Secugen指纹仪采集的图像和FVC2004数据库中的指纹图像进行实验,结果表明经过预处理后的指纹图像质量得到明显增强,方便进行细节特征提取。-Introduction and realize a complete set of fingerprint image pre-processing methods, and treatment through the remaining block smoothing method to improve the traditional fingerprint image segmentation algorithm using the direction of matching the method of fingerprint image filtering direction the direction of block completion of image enhancement and refinement to remove after the the existence of short-term and burr. The algorithm for fingerprint Secugen Miriam Collection FVC2004 images and fingerprint images in the database to conduct experiments, results showed that after pretreatment of the fingerprint image quality has been markedly enhanced, to facilitate the details of feature extraction. Platform: |
Size: 750592 |
Author:张杰 |
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Description: matlab处理指纹图像，由于指纹的唯一性、可靠性和稳定性，指纹已成为身份识别和鉴定的一个重
要标志，并被公认为“物证之首”。指纹识别作为一种生物识别技术，历来受到人们的广泛关注和重视，是未来个人身份认证的重要组成部分。-Fingerprint image processing matlab，Because the uniqueness of fingerprints, reliability and stability,fingerprint identification has become an important symbol of appraisal,and is recognized as the "first" material.The fingerprint identified as a kind of biometrics,has received extensive attention of,the individual identity authentication is the important component.Based on the MATLAB software applications for tools,for fingerprint image preprocessing and feature extraction technology research.Including pretreatment part involves by different methods of fingerprint image segmentation to extract valid area,with the improvement of OPTA thinning algorithm for thinning,
Platform: |
Size: 427008 |
Author:赖晓燕 |
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Description: 用VC++编写的一个指纹预处理程序，里面有指纹分割，平滑，Gabor增强，二值化，细化，特征提取等过程，预处理的指纹图像效果很好-Using VC++ to prepare a fingerprint pre-processing procedure, there are fingerprint segmentation, smooth, Gabor enhanced binarization, thinning, feature extraction, such as the process of the fingerprint image pre-processing well Platform: |
Size: 154624 |
Author:wy |
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Description: 本文详细介绍了指纹识别技术的预处理算法，其中包括MATLAB算法仿真部分和DSP实现部分，并着重研究了预处理算法中的指纹图像归一化、图象滤波增强、图像分割、二值化、细化等关键技术。本文提出了改进的Gabor滤波算法，同时对其他预处理部分算法进行了优化，并将傅立叶分析方法应用于指纹图象处理研究中，采用MATLAB实现了本文讨论的所有算法。-This paper describes a fingerprint recognition algorithm technologies, including part of MATLAB simulation and DSP algorithms to achieve part of, and focus on the pre-processing algorithm of fingerprint image normalization, image enhancement filter, image segmentation, binarization, refining and other key technologies. In this paper, the Gabor filtering algorithm to improve at the same time some of the other pre-processing algorithm optimization, and Fourier analysis method has been applied to study of fingerprint image processing using MATLAB realized all the algorithms discussed in this paper. Platform: |
Size: 5605376 |
Author:孙丽平 |
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Description: fingerprint segmentation - performs the segmentation of an inputted fingerprint-fingerprint segmentation- performs the segmentation of an inputted fingerprint Platform: |
Size: 3072 |
Author:timosboy |
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Description: 指纹图像的质量测量与评价,在指纹图像分割、增强及指纹匹配等环节都有重要应用. 同时,指纹图像的质量分类,对指纹识别算法的适用性研究也有重要意义. 本文提出一种基于支持向量机的指纹图像质量分类方法.该方法选择梯度、Gabor特征、方向对比度等指标,利用支持向量机有效实现指纹图像质量分类. 并采用少类样本合成过采样技术( SMOTE)降低指纹图像质量好坏的类别不平衡问题对分类的影响. 理论分析和实验结果都表明该方法能够较为有效地提高指纹图像质量分类的正确率.-Fingerprint Image Quality Measurement and evaluation, in the fingerprint image segmentation, enhancement and fingerprint matching has important applications such links. Meanwhile, the quality of fingerprint image classification, on the applicability of fingerprint recognition algorithm is also important. In this paper, based on support vector machine classification of fingerprint image quality. The method chosen gradient, Gabor features, such as indicators of the direction of contrast, the effective use of support vector machine classification of fingerprint image quality. and use a small sample of synthetic over-sampling technique class (SMOTE) lower quality fingerprint image the type of imbalance bad influence on the classification. Theoretical analysis and experimental results show that the method can be used effectively to improve the quality of fingerprint image classification accuracy. Platform: |
Size: 564224 |
Author:郭事业 |
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Description: 提取指纹特征点的matlab代码，很有用，利用自适应阈值进行分割，再进行频域增强，根据八邻域纹线编码进行特征提取。-Extracted fingerprint feature points of the matlab code, useful, adaptive threshold segmentation, and then increased in frequency domain, the eight neighborhood ridge coding for feature extraction. Platform: |
Size: 583680 |
Author:李辉艳 |
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Description: 主要讲指纹的预处理的过程，包括图像的分割，图像增强，二值化和细化等-Mainly about the process of fingerprint preprocessing, including image segmentation, image enhancement, thresholding and thinning Platform: |
Size: 1204224 |
Author:李琳莉 |
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Description: 指纹图像分割~利用分开的局部均值及方向场方法-~ Use of fingerprint image segmentation and direction of separate local mean field method Platform: |
Size: 1024 |
Author:汪玉琦 |
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Description: 指纹模式识别预处理演示（特征点获取）
包括梯度方向场确认 图像分割二值化细化处理 标记特征点演示-Fingerprint pattern recognition preprocessing Demo (feature points to obtain), including the direction of field gradient confirmed the binary segmentation of feature points marked thinning demonstration Platform: |
Size: 3755008 |
Author:renee |
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Description: 有关指纹识别预处理阶段图像分割的源程序，用matlab言语做的，很好用-The fingerprint identification preprocessing stage image segmentation of the source, using MATLAB language to do, very good use Platform: |
Size: 351232 |
Author:陈怡 |
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Description: 图形图片的分割，包括分水岭分割、水平集分割、图像分割和指纹提取-Graphic picture of the split, including watershed segmentation, level set segmentation, image segmentation and fingerprint extraction Platform: |
Size: 1167360 |
Author:黄小菲 |
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Description: 由于光线分布不均匀或斑块噪音干扰等原因,往往使所要处理的指纹的灰
度值分布缺乏均匀性。在指纹特征自动识别提取过程中,造成许多传统的算法在局部出
现很大的误差。利用方差和均值特征的自动提取方法,首次对不均匀灰度图像进行自适
应分割。然后通过对图像分区域进行不同程度的自适应调整,使具有相同属性的像素单
元具有近似的灰度值分布。调整结果的灰度均匀水平与预先指定的调整精度成正比。这
种调整不仅提高了图像分割的自适应性,而且进一步扩大了一般阈值算法的应用领域。-Gray value distribution of the lack of uniformity due to the light distribution is uneven or plaque noise reasons, tend to make the fingerprint to be processed. Automatic identification of fingerprint feature extraction process, resulting in many traditional algorithm in the local large errors. Automatic extraction method using the variance and the mean characteristics, for the first time on the the uneven grayscale image adaptive segmentation. Then, through adaptive adjustment of the different degrees of the image subregion, so that pixels having the same attribute unit having the approximate distribution of grayscale values. Proportional to the adjustment accuracy of the result of the adjustment of the gray uniform level with a previously specified. This adjustment is not only self-adaptability of image segmentation, but also to further expand the application areas of the general threshold algorithm. Platform: |
Size: 131072 |
Author:东方 |
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Description: 梯度法计算指纹方向场，采用了三种方式：1、滑动块 2、自适应块 3、分割固定块(Gradient method is used to calculate the direction field of fingerprint, and three methods are adopted: 1, sliding block 2, adaptive block 3 and segmentation fixed block) Platform: |
Size: 3072 |
Author:HDU_LGL
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Search - segmentation of fingerprint