Abstract
Aiming at the problem that the data hiding algorithm of high efficiency video coding (HEVC) has great influence on the video bit rate and visual quality, an information hiding algorithm based on intra prediction mode and matrix coding is proposed. Firstly, 8 prediction modes are selected from 4×4 luminance blocks in I frame to embed the hidden information. Then, the Least Significant Bit (LSB) algorithm is used to modulate the LSB of the last prediction mode. Finally, the modulated luminance block is re-encoded to embed 4 bits secret information. Experimental results show that the algorithm improves the embedding capacity, guarantees the subjective and objective quality of the video, and the bit rate increases by 1.14% on average.
Highlights
With the development of digital multimedia technology, more multimedia resources are widely used
Aiming at the problem that the data-hiding algorithm of high efficiency video coding (HEVC) has great influence on the video bit rate and visual quality, an information-hiding algorithm based on intra-prediction mode and matrix coding is proposed
Information hiding algorithm based on HEVC standard, Wang et al (2014), reduces the errors caused by coding, prediction mode modulation is applied to intra luminance blocks with complex texture
Summary
With the development of digital multimedia technology, more multimedia resources are widely used In the research of h.264/AVC information hiding algorithm for intra prediction mode, Hu et al (2008) firstly proposed the idea to modify the intra prediction mode to embed the secret information, and completed the information embedding by establishing the mapping relationship between the prediction mode and the secret information. Information hiding algorithm based on HEVC standard, Wang et al (2014), reduces the errors caused by coding, prediction mode modulation is applied to intra luminance blocks with complex texture. According to the local texture feature (LBP), the algorithm searches all prediction modes that need parity mapping, and uses Lagrange rate distortion rate to modify the original prediction mode to the optimal prediction mode to achieve information hiding with the minimum cost. This paper presents an information hiding algorithm based on HEVC intra-frame prediction mode and matrix coding. The prediction mode with the lowest rate-distortion cost is selected as the best prediction mode of current prediction block
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