Title :
Generalized Discrete Fractional Hadamard Transformation and its Application on the Image Encryption
Author :
Yan, Li-Jun ; Pan, Jeng-Shyang
Author_Institution :
Harbin Inst. of Technol., Harbin
Abstract :
Discrete fractional Hadamard transform (DFHaT) is a generalization of discrete Hadamard transform. It has been widely used in signal processing. Different from only having one order parameter, in this paper, a new generalized discrete fractional Hadamard transform (GDFHaT) is proposed, which has multi-order parameters. This kind of GDFHaT shares most properties with DFHaT. The GDFHaT becomes DFHaT when all of its order parameters are the same. Then we apply it to the image encryption. Results show this method performs well.
Keywords :
Hadamard transforms; cryptography; discrete transforms; image coding; generalized discrete fractional Hadamard transformation; image encryption; Automatic testing; Cryptography; Discrete cosine transforms; Discrete transforms; Eigenvalues and eigenfunctions; Electronic equipment testing; Fourier transforms; Karhunen-Loeve transforms; Signal processing; Symmetric matrices;
Conference_Titel :
Intelligent Information Hiding and Multimedia Signal Processing, 2007. IIHMSP 2007. Third International Conference on
Conference_Location :
Kaohsiung
Print_ISBN :
978-0-7695-2994-1
DOI :
10.1109/IIHMSP.2007.4457587
