| 一种高效的自适应指纹图像压缩算法 |
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| 引用本文： | 夏勇,田捷,邓翔,漆远. 一种高效的自适应指纹图像压缩算法[J]. 计算机学报, 1999, 22(5): 525-528 |
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| 作者姓名： | 夏勇 田捷 邓翔 漆远 |
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| 作者单位： | 像的关键点对应的小波系数进,中国科学院自动化研究所人工智能实验室,北京,100080 |
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| 摘 要： | 提出了一种新的高效的指纹图像压缩算法，该算法根据识别特征对指纹图像的关键点对应的小波系数进行自适应量化，从而有效地改进了零树小波压缩算法，实验结果证明了本文算法的有效性。
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| 关 键 词： | 指纹图像压缩 小波变换 零树算法 自适应量化 特征识别 |
| 修稿时间： | 1998-04-27 |
AN EFFICIENT ADAPTIVE FINGERPRINT COMPRESSION ALGORITHM |
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| XIA Yong,TIAN Jie,DENG Xiang,QI Yuan. AN EFFICIENT ADAPTIVE FINGERPRINT COMPRESSION ALGORITHM[J]. Chinese Journal of Computers, 1999, 22(5): 525-528 |
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| Authors: | XIA Yong TIAN Jie DENG Xiang QI Yuan |
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| Abstract: | Fingerprint compression is a necessary component in automated fingerprint identification system. The famous wavelet scalar quantization (WSQ) algorithm may suffer from Gibbs effect, namely edge blurness at a low bit rate. This paper proposes a new fingerprint compression algorithm. Based on recognition features the wavelet coefficients corresponding to the critical fingerprint points are adaptively quantized. Consequently the zero tree wavelet image compression algorithm is effectively improved. Experimental results demonstrate the effectiveness of the proposed compression algorithm. |
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| Keywords: | Fingerprint compression wavelet transform zero tree algorithm adaptive quanti zation characteristic recognition. |
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