An information hiding method based on context-based adaptive variable length coding. (2017)

• Record Type: Journal Article
• Authors: Sun, Yi-Xiao; Zhan, Ren-Jun; Yang, Yong; Niu, Han; Wang, Xu An
• Is Part Of: International journal of innovative computing and applications. Volume 8:Number 1(2017)
• Page Start: 50
• Page End: 57
• Publication Date: 2017
• Subjects: real-time transmission -- CAVLC -- trailing coefficients -- real-time transport protocol -- RTP packet loss channels -- information hiding -- context-based AVLC -- adaptive variable length coding -- video information -- video degradation -- embedded secret information -- security; Evolutionary computation -- Periodicals; Neural networks (Computer science) -- Periodicals; Genetic programming (Computer science) -- Periodicals; Biologically-inspired computing -- Periodicals; Swarm intelligence -- Periodicals; Quantum computers -- Periodicals; 006.3
• Languages: English
• ISSNs: 1751-648X

Abstract

Current video information hiding algorithms based on H.264 cannot meet the requirement of real-time transmission and get compromise between embedding strength and the changing amplitude of bits stream. To solve these problems, a real-time video information hiding method in CAVLC for H.264/AVC is proposed, which combines information hiding with CAVLC process, and embeds the secret information in the number of trailing coefficients of 4 × 4 macroblocks. Aiming at alleviating video degradation and the embedded secret in real-time transmission, the method is time-efficient and robust. Experimental results show that the embedding process cannot bring detectable video degradation, and only cause a small change in the length of the video stream. Moreover, the embedded secret information can be recovered correctly when being transferred under different RTP lost channels. And the secret information can be extracted directly from the encoded stream without resorting to the original video.