Fast watermarking scheme for real-time spatial scalable video coding
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Recent advancements in high resolution scalable video coding have significantly increased the computational complexities of watermarking solutions for real-time video encoding systems. This paper proposes a human visual system based watermarking algorithm for spatial scalable coding based on the H.264/SVC standard. The proposed algorithm extracts textural feature from a set of 7 high energy quantized coefficients in 4×4 luma INTRA-predicted blocks of all slices and embeds watermark into the highly textured block which has at least one non-zero coefficient in 6 selected locations. The same embedding process is performed for all layers of the video to improve robustness against common video processing attacks. Experiments were conducted by embedding up to 8192 watermark bits into a four-layer spatial scalable coded video. Results suggest that the proposed scheme produces watermarked video with an average visual quality degradation of ~0.36 dB at the expense of 2.18% bitrate overhead. In addition, the proposed watermarking scheme achieves an average detection rate of 0.98, 0.97 and 0.71 against re-encoding, recompression and Gaussian filtering attacks, respectively, using the base layer, and above 0.97, 0.94 and 0.66, respectively when using any of the enhancement layer.
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Buhari, A.; Ling, Huo Chong; Baskaran, V.; Wong, K. (2016)© 2016 IEEE. This paper presents a low complexity human visual system based watermarking algorithm for H.264 spatial scalable coding. The proposed algorithm extracts textural feature from a set of 7 high energy quantized ...
Real-time high-resolution downsampling algorithm on many-core processor for spatially scalable video codingBuhari, A.; Ling, Huo Chong; Baskaran, V.; Wong, K. (2015)© 2015 SPIE and IS and T. The progression toward spatially scalable video coding (SVC) solutions for ubiquitous endpoint systems introduces challenges to sustain real-time frame rates in downsampling high-resolution videos ...
Potdar, Vidyasagar; Han, Song; Chang, Elizabeth; Wu, Chen (2006)Many digital watermarking algorithms are proposed in the literature. Broadly these watermarking algorithms can be classified into two main categories. The first category of algorithms uses a pseudo random Gaussian sequence ...