查询词典 fingerprint

With the sub-pixel calculation,the fingerprint periodicity matrix and normal direction image can be gotten accurately and the sharp corner of fingerprint image center line in existing direction image method can be avoided,the AFIS performance also can be improved significantly.

通过亚像素的计算，可以精确地输出指纹的周期矩阵和法向图，避免了方向图算法中无法计算指纹中心线急转弯的问题，使整个AFIS的性能得到了很大的提高。

Based on long term study, we put forward new algorithm of recognizing fingerprint directional diagram: the iterative algorithm based on model, which revises the singular points (central point and triangulation point) and fingerprint directional diagram through local and global iteration. Hence, the algorithm can recognize the directional diagram and singular point more accurately and can extract detail features more accurately.

经过长期的研究，我们提出全新的判别指纹方向图算法：基于模型的迭代算法，通过局部和全局反复迭代修正图像的奇异点和指纹方向图，更能准确地判断指纹方向图、奇异点，从而更能准确地提取细节特征点。

With the analysis of the principal curves,the extended polygonal line algorithm and the specialties of fingerprint,the original extended polygonal line algorithm is improved a lot,and becomes much more suitable for the extraction of the skeletonization of fingerprint.

在分析主曲线、推广多边形算法和指纹数据的特点后，尝试使用主曲线来描述指纹特征，对原推广多边形算法作了较大改进，使其更适用于指纹骨架的提取，最后实现了基于骨架的指纹特征提取。

In this paper, we established an automatic fingerprint recognition software system with micro-computer.It can pretreat, do feature extraction and recognize the input fingerprint dynamically.

本文建立了一个微机指纹自动识别软件系统，该系统能够动态地对输入指纹图像进行预处理、特征提取和识别工作。

For fingerprint segmentation, aiming at the deficiency of existing method, we first bring forward a new thought of fingerprint segmentation based quadric surface model and carry it out.

在指纹图像分割方面，针对现有指纹图像分割方法存在的不足之处，首次提出采用二次曲面对指纹图像进行分割的思想，并使用该思想实现了基于二次曲面模型的分割方法。

A two-dimensional sine quadric surface model accord with the ridge gray distributing rule was designed, and a fingerprint enhancement algorithm was produced based on the model after analyzing the basic character of the fingerprint image.

在深入分析指纹图像的基本特征及其对正弦曲面相似性的基础上，构造符合指纹局部区域纹线灰度分布规律的正弦曲面滤波器模型，并提出了基于该模型的指纹增强算法。

In this paper, an adaptive algorithm for singular points detection is proposed, which is based on the behavior of Gaussian-Hermite moments. In order to detect singular point accurately, the distribution of Gaussian-Hermite moments of different orders of the fingerprint image in multiple scales is used. A PCA-based method is used to analyze the distribution of Gaussian-Hermite of fingerprint image.

介绍了一种基于Gaussian-Hermite矩分布属性的自适应指纹奇异点定位方法，为了准确地确定奇异点，用到了指纹图像在多种尺度下的不同阶Gaussian-Hermite矩分布，并用一种基于主分量分析(principal component analysis，简称PCA)的方法分析指纹图像的Gaussian-Hermite矩分布。

Although there have been many kinds of products, the perfect fingerprint identification system is still a hard research task because of the yawp of the fingerprint, the unlinearity of skin springiness and the secrecy of many literatures for commercial benefit.

尽管在此技术上已有多种成型产品，但因为指纹图的噪声、皮肤弹性的非线性等因素，以及许多文献都因商业利益而未经公开，理想的指纹自动识别系统依然是一个很困难的研究任务。

Based on analyzing the two conventional segmentations of fingerprint images,a method of fingerprint images segmentation was presented in terms of the subarea processing.

在分析2种传统指纹分割方法的基础上，提出了一种自适应分区处理的指纹图像分割方法。

The traditional Fingerprint Recognition System is usually contact-type. The drawback of contact-type is that it is easy to make dirty, so we have to maintain and clean it often. We apply Touchless Fingerprint Sensor in order to avoid this kind of situation.

一般指纹取像装置通常为指腹接触式，因常会有沾污、故障等情况发生，所以必须经常委派专人做清洁维修的动作，为了避免此情况而影响到使用者操作，故本研究采取非接触式指纹取像装置。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。