JPEG2000 Digital Image Encryption Algorithm Based on Chaotic System
Jiyun Yang · 2009
This paper designed a matrix scrambling algorithm based on the chaotic system firstly which has excellent performance.As most important image information after DWT was concentrated upon the part of the lowest approximation coefficient,the image encryption algorithm was designed only to scramble the lowest approximation coefficient matrix for encryption.Therefore,the algorithm,which overcomes some shortcomings existing in preceding image encryption based on JPEG2000 skillfully,well comebined the encryption,decryption with image coding and decoding.Finally,experiments were implemented to testify and analyse the feasibility and superiority of the algorithm,and the results prove that the algorithm is characterized by high complexity,good performance of security and encoding efficiency.