手指静脉图像小波增强算法  

Finger vein image enhancement algorithm based on wavelet transform

作　　者：杨数强[1] 杨杰慧[1] 宋亚龙 

机构地区：[1]洛阳师范学院物理与电子信息学院,河南洛阳471022

出　　处：《现代电子技术》2013年第15期73-75,共3页Modern Electronics Technique

基　　金：洛阳师范学院应用科研基金项目(2011-YYJJ-011);河南省科技厅科技攻关重点项目(112102310078);河南省科技厅科技攻关项目(112102310337);河南省科技厅科技攻关项目(112102310530);河南省科技厅科技攻关项目(122102310459)

摘　　要：针对低质量的手指静脉图像,提出一种小波域静脉图像滤波增强算法。首先采用小波变换,然后对其低频系数进行频域增强,最后进行小波逆变换得到增强后的图像。实验表明:该方法能很好地抑制噪声,准确定位图像边缘信息,大大的改善了图像的质量,提高了图像的特征提取准确性和识别精度,使图像取得很好的增强效果。According to the low-quality images of finger vein, a vein image filtering enhancement algorithm in the wavelet domain is proposed. In the algorithm, the wavelet transform is used, the parameter of the low frequency is enhanced in the frequency domain, and then the inverse wavelet transform is adopted to achieve the enhanced image. The experimental results show that the method can suppress noise perfectly, locate the image edge information accurately, improve the quality of image significantly, and enhance the extraction veracity of image features and identification accuracy. The algorithm obtained perfect efforts of image enhancement.

关 键 词：手指静脉 小波变换 图像增强 傅里叶变换 

分 类 号：TN911.733.4[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]