Spectral Analysis Based Fingerprint Image Enhancement Algorithm
Many fingerprint images are of very poor quality, which will greatly damage the performance of the automatic fingerprint identification system (AFIS). In order to ensure that the performance is robust with respect to the quality of input fingerprint images, an enhancement algorithm is necessary. Gabor filter is a very effective tool for image enhancement In this paper, an algorithm that take advantage of the characteristics of gabor filter functions both in spectral and spatial domain are proposed to dynamically estimate the gabor filters parameters and bandwidth. Finally, the images are filtered in frequency domain using the obtained gabor Frequencydomain filter function. The filtering results show that images are greatly improved.
AFIS gabor filter gauss function spectral analysis Fourier transform
Zhang Yuanyuan Jing Xiaojun
School of info, and comm. engineering, Beijing University of Posts and Telecommunications Beijing, China
国际会议
2010 International Conference on Image Analysis and Signal Processing(2010 图像分析与信号处理国际会议 IASP 10)
厦门
英文
656-659
2010-04-12（万方平台首次上网日期，不代表论文的发表时间）