数字指纹

摘要

Digital fingerprinting is widely used in the field of copyright protection, the paper first introduces the relationship be-tween the digital fingerprints and digital watermarking, and then establishs a digital fingerprinting system based on cox, which completes the embedding and detection,then compares it with the block DCT transform, the conclusion is the block DCT make improvements to digital fingerprint system . Finally, the paper indicate the developmental of watermark application.%数字指纹广泛应用在版权保护等领域中，该文首先介绍了数字指纹与数字水印之间的关系，然后以cox为模型建立数字指纹系统，实现了指纹的嵌入和检测，再与块DCT变换作比较，得出结论：块DCT变换可以对数字指纹系统做出改进；最后对数字指纹的现状进行分析和展望。