An image joint compression-encryption algorithm based on adaptive arithmetic coding

• Published in: Chinese physics B Vol. 22; no. 9; pp. 403 - 408
• Main Author: 邓家先 邓海涛
• Format: Journal Article
• Language: English
• Published: 01.09.2013
• Subjects: Adaptive algorithms; Algorithms; Arithmetic coding; Coding; Computer simulation; Encryption; Image compression; Series (mathematics); 仿真结果; 关节; 加密算法; 压缩过程; 图像压缩算法; 离散小波变换; 编码技术; 自适应算术编码
• ISSN: 1674-1056; 2058-3834; 1741-4199
• DOI: 10.1088/1674-1056/22/9/094202

Through a series of studies on arithmetic coding and arithmetic encryption, a novel image joint compression- encryption algorithm based on adaptive arithmetic coding is proposed. The contexts produced in the process of image compression are modified by keys in order to achieve image joint compression encryption. Combined with the bit-plane coding technique, the discrete wavelet transform coefficients in different resolutions can be encrypted respectively with different keys, so that the resolution selective encryption is realized to meet different application needs. Zero-tree coding is improved, and adaptive arithmetic coding is introduced. Then, the proposed joint compression-encryption algorithm is simulated. The simulation results show that as long as the parameters are selected appropriately, the compression efficiency of proposed image joint compression-encryption algorithm is basically identical to that of the original image compression algorithm, and the security of the proposed algorithm is better than the joint encryption algorithm based on interval splitting.