本文所做的正是指纹图像增强方面的一些研究。
This paper just studied and discussed the fingerprint image enhancement.
实践表明，该方法能提高指纹图像增强的效果和速度。
Practice the enunciation, that method can increase the result that fingerprint image strengthen with speed.
该文介绍了一种基于指纹线方向的指纹图像增强算法。
This paper introduces a fingerprint image enhancement algorithm based on fingerprint line orientation.
针对指纹图像中的噪声干扰，提出一种基于指纹局部方向的指纹图像增强算法。
An algorithm based on the local direction of fingerprint is proposed to improve the quality of the fingerprint image in noise background.
其中图像预处理中的指纹图像增强是最关键的步骤，直接影响特征提取和匹配。
A critical step is the fingerprint enhancement that affects minutia extraction and minutia matching.
文章研究了目前的指纹图像增强算法，提出了一种新的指纹方向场的动态计算方法。
In this paper, we studied the algorithms of fingerprint image enhancement and put forward a new method to calculate the direction image.
实验表明，本文提出的指纹图像增强算法对模糊，缺损的指纹图像有较好的增强效果。
The experiment indicated that these fingerprint enhancement methods which were introduced in this paper, could amend the mistiness fingerprint with a good impact.
为减小噪声的影响，须在指纹识别预处理过程中对指纹进行优化，如进行指纹图像增强。
To reduce the noise influence on fingerprint identification pretreatment, the process of fingerprint image is need, such as fingerprints image enhancement.
指纹图像增强在指纹图像预处理过程中有着非常重要的作用，直接影响指纹识别的识别率和识别速度。
Fingerprint image enhancement has very important using in the preprocessing of the fingerprint image, it is directly restricting the recognition rate and speed of fingerprint recognition.
实验表明该算法具有良好的增强指纹图像的脊线和抑制噪声的作用。
Experiment results indicate that the new algorithm has a higher ability to resist noises and to enhance quality of fingerprint image.
指纹图像的增强。
实验结果表明该算法能有效地增强指纹图像，且具有较快的速度。
Experiments show that the algorithm can enhance fingerprint image effectively and fast.
设计中采用了双节点上传指纹图像的方法，提高指纹图像的采集速度，从而减少验证时间，增强系统的可用度。
In the design, we adopt the method of transferring the fingerprint in double-points, to raise the speed of collecting the drawings, to reduce the verify time, to strengthen the usability.
指纹图像预处理的研究包含四个方面：图像分割、图像增强、二值化和细化。
In preprocessing of fingerprint image, four sides are discussed, including outline segmentation, filtering enhancement, segmentation binarization and thinning.
指纹图像的周期性和局部方向性是指纹图像的重要结构特征，充分利用这两个结构特征是提高指纹增强算法的重要方法。
Periods and local direction of fingerprint image are the important structure characters. The two characters of structure are important in the fingerprint enhancement.
其中图像预处理中的图像增强是最为关键的环节，直接影响着后面指纹图像的细化特征提取等处理。
A critical step is the fingerprint enhancement that affects the process of thinning and minutia extraction directly.
具体实现的算法包括指纹的分割、方向场的提取和指纹图像的增强。
The algorithm used on division of fingerprints were a set of algorithm based on the intensity of Corner, which was proposed by a.
指纹增强的目的在于改善指纹图像的质量，以提高指纹识别系统的性能。
Fingerprint enhancement aims to improve fingerprint image quality, and enhance the performance of fingerprint recognition system.
在大量样本分析的基础上 ，根据指纹纹理频率参数的变化动态调整方向滤波模板的大小对指纹图像进行有效的增强处理 ，对不同的纹理方向专门采用了查表的方法 ，减小了时间消耗。
According to the characteristics of fingerprints, the proposed algorithm also designs a group of oriented filters, and then manipulates them to filter the image depending on the orientation of the.
在对比指纹图像的灰度直方图增强的技术的基础上，针对均衡化算法的不足和现有直方图规定化算法中映射规则计算量大的情形，提出一种改进的规定化算法。
In view of the shortcoming of direct histogram equalization and big work of mapping law's calculate in histogram specification, proposed one kind of improvement stipulation algorithm.
重点研究图像的预处理增强算法和二值化算法，根据指纹图像的方向性信息求出方向图，并利用方向滤波器对原图像进行滤波去噪。
Enhancement and binarization algorithm are the emphases among them. According to fingerprint feature, orientation map is calculated, and image is denoised by orientation filters.
重点研究图像的预处理增强算法和二值化算法，根据指纹图像的方向性信息求出方向图，并利用方向滤波器对原图像进行滤波去噪。
Enhancement and binarization algorithm are the emphases among them. According to fingerprint feature, orientation map is calculated, and image is denoised by orientation filters.
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