Golden ratio-haar wavelet in image encryption
DU Jun-long · Xi'an Gongcheng Keji Xueyuan xuebao · 2008
Fibonacci sequence and some related important character are discussed.Fibonacci discrete orthogonal transforms are researched based on former.Golden ratio of Fibonacci is introduced into Hadamard transformation and orthogonal transformation matrix is got,a kind of transformation is produced based on golden ration-haar wavelet,and clear physical means of the orthogonal transformation in time and frequency domain are analyzed.At last,golden ratio-haar wavelet transform is researched in image encryption.The results of experiment indicate image encryption technique is efficient and facility.As compared to the existing transform,the obvious advantages of the matrix construction and algorithms are simple and have excellent character in frequency domain.Meanwhile decryption operation calculate easily with orthogonal encryption matrix.