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一种保持码流结构的JPEG2000加密算法 被引量:2

JPEG2000 Encryption Maintaining Codestream's Structure
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摘要 本文提出了一种JPEG2000包体数据加密算法,通过可逆整数S变换处理加密后的包体数据,保证了不会产生新的标记码,因而原码流的结构及特性被保留了下来,压缩率也没有发生改变。加密后的码流仍能被标准解码器解码,但解读出来的是内容被完全掩蔽的无意义的图像。对256×256的Lena灰度图像进行加密实验,结果显示,该算法可以有效地保障加密图像的安全。 A method for encryption of JPEG2000 image which keeps the structure of codestream is proposed in this paper. Marker codes won'be regenerated by using a transform process. As a result, the originaUPEG2000 codestream. However, the decoded image becomes completely incomprehensible. Also, the proposed method has no overhead on the compression efficiency and experimental results show that it is an effectiveencryption algorithm.
出处 《计算机科学》 CSCD 北大核心 2007年第11期222-223,263,共3页 Computer Science
基金 国家自然科学基金(60573019) 广东省自然科学基金(05103541) 广东省自然科学基金博士科研启动基金(05300198)
关键词 JPEG2000 加密 S变换 JPRG2000,Encryption, S transform
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参考文献8

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同被引文献16

  • 1王智娜,曹伯燕.基于JPEG2000的图像加密算法(英文)[J].仪器仪表学报,2004,25(z2):243-247. 被引量:1
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