SECURE FRACTAL IMAGE CODING BASED ON FRACTAL PARAMETER ENCRYPTION

作     者：Lian, Shiguo Chen, Xi Ye, Dengpan 

作者机构：France Telecom R&D Orange Labs Beijing Beijing 100080 Peoples R China Nanjing Univ Sch Management Nanjing 210093 Peoples R China Wuhan Univ Comp Sch Wuhan 430072 Peoples R China 

出 版 物：《FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY》 (分数；自然复几何多学科杂志)

年 卷 期：2009年第17卷第2期

页      面：149-160页

核心收录：

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

基　　金：Crypto [PEK07-ILAB-014] National Ministry of Education Foundation of China [06JC630016] Pre-research Foundation of Nanjing University [200711.] 

主　　题：Fractal Image Coding Image Encryption Partial Encryption Fractal Parameter 

摘      要：In recent work, various fractal image coding methods are reported, which adopt the self-similarity of images to compress the size of images. However, till now, no solutions for the security of fractal encoded images have been provided. In this paper, a secure fractal image coding scheme is proposed and evaluated, which encrypts some of the fractal parameters during fractal encoding, and thus, produces the encrypted and encoded image. The encrypted image can only be recovered by the correct key. To maintain security and efficiency, only the suitable parameters are selected and encrypted through investigating the properties of various fractal parameters, including parameter space, parameter distribution and parameter sensitivity. The encryption process does not change the file format, keeps secure in perception, and costs little time or computational resources. These properties make it suitable for secure image encoding or transmission.