基于JPEG 2000实时量化水印和指纹识别的身份认证系统  

Identity verification system using JPEG 2000 real-time quantization watermarking and fingerprint recognition

作　　者：姜聃[1] 宣国荣[1] 杨程云[1] 郑伊展[1] 刘连生 白维朝 

机构地区：[1]同济大学计算机系,上海200092 [2]深圳宝嘉电子设备有限公司,广东深圳518057

出　　处：《计算机应用》2005年第8期1750-1752,共3页journal of Computer Applications

基　　金：国家自然科学基金资助项目(90304017)

摘　　要：提出了新的JPEG 2000实时量化水印算法,并将其用于改进的基于指纹识别和数字水印的银行养老金发放系统.系统客户端,量化水印在JPEG 2000压缩过程中实时嵌入指纹图像,压缩比特流传送到服务端;系统服务端,水印在JPEG 2000解压缩过程中实时提取,使用解压缩的指纹图像和水印进行身份认证.实验表明典型指纹图像压缩到1/4～1/20的时候,嵌入的水印能够无损提取,指纹图像虽不能完全恢复但识别率没有明显降低.因而在低网络带宽条件下,新系统有更好的交互性能,在电子商务中有很好的应用前景.The proposed JPEG 2000 real-time quantization watermarking algorithm was used in an improved online bank pension distribution system. The system was based on fingerprint recognition and digital watermarking technologies. In the client side, real-time quantization watermark was embedded into the sampled fingerprint image in the JPEG 2000 coding pipeline; then the compressed bit-stream was sent to the server side. In the server side, the watermark was extracted from the compressed bit-stream in the JPEG 2000 decoding pipeline; then the decompressed fingerprint image and extracted watermark were used to verify users identification. Experiments showed when typical fingerprint image was compressed to 1/4~1/20 of its original size, the embedded watermark could be exactly extracted, and fingerprint recognition rate remained almost the same after lossy compression. The system has a better interaction performance in the band-limited network situation, and is very promising in the E-business applications.

关 键 词：JPEG 2000 实时量化水印 指纹识别 身份认证 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]