Description: 本算法用来求取指纹图像的质量，也可用于其他的图像处理上，通过指纹的干湿、有效面积等来判断质量-The algorithm used to strike a fingerprint image quality, can also be used for other image processing through the wet and dry fingerprints, such as the effective area to determine the quality of Platform: |
Size: 1024 |
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: 根据指纹的固有规律，提出了一套较完整的指纹图像预处理和特征提取算法。改进了指纹脊线频率求取算法和二值图像去孔噪声
算法，并提出了一种新的滤除指纹伪特征点的方法。通过对上百幅不同质量的指纹图像进行测试，获得了较好的效果。
关键词：指纹；预处理；特征提取-According to the inherent laws of fingerprints, a set of more complete fingerprint image pre-processing and feature extraction algorithm. To improve the frequency of the fingerprint ridge strike algorithms and binary image noise algorithm to hole, and filter out a new fingerprint method of pseudo-feature points. Increase by hundreds of different fingerprint image quality testing, to obtain good results. Key words: fingerprint pretreatment Feature Extraction Platform: |
Size: 200704 |
Author:martin |
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Description: This a simple a gorithm for fingerprint image thinning. The image should be of good quality and binarized prior to the thinning. The thinning process is by using morphological mathematics.-This is a simple a gorithm for fingerprint image thinning. The image should be of good quality and binarized prior to the thinning. The thinning process is by using morphological mathematics. Platform: |
Size: 2048 |
Author:geo1985 |
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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: 基于FPS200指纹采集系统的设计与实现:文章采用新型固体指纹传感芯片FPS200设计出完整的指纹采集系统。该系统具有结构简单、采集速率快、图像质量高等特点,为现今的活体指纹采集提出高效的解决方案。通过对芯片参数的调整,实验表明该系统能够采集到清晰、高质量的指纹图像,为身份认证提供优良的图像来源。-Fingerprint acquisition system based on FPS200 Design and Implementation: This paper fingerprint sensor chips using the new solid FPS200 design a complete fingerprint acquisition system. The system is simple, fast acquisition speed, image quality and advanced features for today' s live fingerprint proposed efficient solutions. On-chip adjustment of parameters, experiments show that the system can acquire a clear, high-quality fingerprint images, to provide excellent image authentication source. Platform: |
Size: 922624 |
Author:de69 |
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Description: 将指纹图像分为好、中、差三类，然后根据典型的质量指标在各类质量中的影响度来设定相关的权重，以此可以更准确的表示图像质量，提高指纹识别的后续处理的准确性，系统的稳定性-Fingerprint image is divided into good, normal and poor, and then the typical quality indicators in the quality of the impact of various degrees to set the associated weight, this can be a more accurate representation of image quality and follow-up to deal with fingerprint recognition accuracy, system stability Platform: |
Size: 7168 |
Author:yx |
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Description: 将指纹图像分为好、中、差三类，然后根据典型的质量指标在各类质量中的影响度来设定相关的权重，以此可以更准确的表示图像质量，提高指纹识别的后续处理的准确性，系统的稳定性-Fingerprint image is divided into good, normal and poor, and then the typical quality indicators in the quality of the impact of various degrees to set the associated weight, this can be a more accurate representation of image quality and follow-up to deal with fingerprint recognition accuracy, system stability Platform: |
Size: 9216 |
Author:yx |
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Description: 实现了指纹图像的质量措施ocl(方向确定度),并以网格形式显示-Measures to achieve the quality of the fingerprint image ocl (direction determining degrees), and displays a grid Platform: |
Size: 1024 |
Author:guoyanyan |
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Description: The widespread deployment of Automated Fingerprint Identification Systems (AFIS) in law enforcement and border control applications has heightened the need for ensuring that these systems are not compromised. While several issues related to fingerprint system security have been investigated, including the use of fake fingerprints for masquerading identity, the problem of fingerprint alteration or obfuscation has received very little attention. Fingerprint obfuscation refers to the deliberate alteration of the fingerprint pattern by an individual for the purpose of masking his identity. Several cases of fingerprint obfuscation have been reported in the press. Fingerprint image quality assessment software (e.g., NFIQ) cannot always detect altered fingerprints since the implicit image quality due to alteration may not change significantly. Platform: |
Size: 56320 |
Author:jayesh |
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Description: 指纹匹配仍然是一个具有挑战性的问题,可靠的人身份验证,因为复杂的扭曲参与两个印象相同的手指。因为绝大多数的指纹匹配算法依赖于细节匹配,细节信息被认为是自动指纹识别系统非常重要的特性。误判率系统的准确性取决于图像质量,图像增强方法、特性提取算法,和以前特性集
-Fingerprint matching is still a challenging problem for reliable person authentication because of the complex distortions involved in two impressions of the same finger. Since the vast majority of fingerprint matching algorithms rely on minutiae matching, minutiae information are regarded as highly significant features for Automatic Fingerprint Recognition System. The accuracy of the AFRS system depends on the image quality, image enhancement methods, feature set extraction algorithms, and feature set pre‐processing/post‐processing algorithms. Platform: |
Size: 4899840 |
Author:小罗 |
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Description: The popular Biometric used to
authenticate a person is Fingerprint which is unique and
permanent throughout a person’s life. A minutia matching is widely used for fingerprint recognition and can be
classified as ridge ending and ridge bifurcation. In this paper we projected Fingerprint Recognition using
Minutia Score Matching method (FRMSM). For Fingerprint
thinning, the Block Filter is used, which scans the
image at the boundary to preserves th
e quality of the image and extract
the minutiae the thinned image.
The false matching ratio is better compared to the existing algorithm-The popular Biometric used to
authenticate a person is Fingerprint which is unique and
permanent throughout a person’s life. A minutia matching is widely used for fingerprint recognition and can be
classified as ridge ending and ridge bifurcation. In this paper we projected Fingerprint Recognition using
Minutia Score Matching method (FRMSM). For Fingerprint
thinning, the Block Filter is used, which scans the
image at the boundary to preserves th
e quality of the image and extract
the minutiae the thinned image.
The false matching ratio is better compared to the existing algorithm Platform: |
Size: 153600 |
Author:ashok |
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Description: 指纹质量评价方法，值越大质量越高，对５００dpi左右的灰度图像可用，比NFIQ能降低更多误差率
mseg 是主程序
help mseg可用-Fingerprint Quality Assessment Approach (FQA). Larger values represent better quality. This is designed for gray-scale fingerprint image, which holds a resolution of 500dpi or so. This approach is better than NFIQ in reducing EER.
mseg is the main program
help mseg to know how to run it Platform: |
Size: 6144 |
Author:Putelays.Yao |
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Search - fingerprint image quality