Title :
A Covert Communication Scheme for the DWT and Data Partitioning Based Image Multiple Description Coding System
Author :
Lin, Chuang ; Pan, Jeng-Shyang ; Huang, Kuang-Chih
Author_Institution :
Dept. of Autom. Test & Control, Harbin Inst. of Technol., Harbin
Abstract :
In this paper, a covert communication scheme is proposed for a discrete wavelet transform (DWT) and packetization based image multiple description coding (MDC) system. Firstly, the secret information is embedded in the DWT domain of the carrier image by the parity modulation based method. And then, the DWT coefficient set is divided into 3 subsets, one is the horizontal subset, another is the vertical subset, the other is the diagonal subset. Each subset is compressed with the SPIHT algorithm, and one subset corresponds to one SPIHT stream. Then the SPIHT streams are packed and transmitted through the packet based channels individually. If there are packets lost, the lost DWT coefficients can be estimated by the ones which arrived at the receiver successfully. At the receiver side, the inverse procedures are performed to recover the carrier image and the secret information.
Keywords :
discrete wavelet transforms; image coding; set theory; DWT coefficient set; SPIHT algorithm; covert communication scheme; data partitioning; diagonal subset; discrete wavelet transform; horizontal subset; image multiple description coding system; parity modulation; secret information; vertical subset; Automatic testing; Data engineering; Discrete wavelet transforms; Electronic equipment testing; Image coding; Partitioning algorithms; Steganography; Streaming media; System testing; Watermarking;
Conference_Titel :
Innovative Computing Information and Control, 2008. ICICIC '08. 3rd International Conference on
Conference_Location :
Dalian, Liaoning
Print_ISBN :
978-0-7695-3161-8
Electronic_ISBN :
978-0-7695-3161-8
DOI :
10.1109/ICICIC.2008.16
