14 research outputs found

    A watermarking scheme for High Efficiency Video Coding (HEVC).

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    This paper presents a high payload watermarking scheme for High Efficiency Video Coding (HEVC). HEVC is an emerging video compression standard that provides better compression performance as compared to its predecessor, i.e. H.264/AVC. Considering that HEVC may will be used in a variety of applications in the future, the proposed algorithm has a high potential of utilization in applications involving broadcast and hiding of metadata. The watermark is embedded into the Quantized Transform Coefficients (QTCs) during the encoding process. Later, during the decoding process, the embedded message can be detected and extracted completely. The experimental results show that the proposed algorithm does not significantly affect the video quality, nor does it escalate the bitrate

    Comparison of PSNR at QP 18 and 32 for watermarked and original video sequences.

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    <p>Comparison of PSNR at QP 18 and 32 for watermarked and original video sequences.</p

    Sample video sequences used to evaluate the performance of proposed watermarking scheme.

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    <p>Sample video sequences used to evaluate the performance of proposed watermarking scheme.</p

    Watermark embedding Algorithm.

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    <p>Watermark embedding Algorithm.</p

    The Racehorses video sequence.

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    <p>(a) Uncompressed video frame, (b) non-watermarked video frames at QP 18, (c) non-watermarked video frames at QP 32, (d) watermarked video frames at QP 18, (e) watermarked video frames at QP 32, (f) the QP 18 difference image (b – d), (g) the QP 32 difference image (c – e), (h) histogram QP 18 difference image (f), and (i) histogram of QP 32 difference image (g).</p

    Comparison of Payload and Bitrates at QP 18 and 32 for all video sequences.

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    <p>Comparison of Payload and Bitrates at QP 18 and 32 for all video sequences.</p

    Comparison at whole range of QP for BQMall sequence.

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    <p>(a) PSNR, (b) Frame size and (c) Payload.</p

    The Proposed Watermarking scheme for HEVC.

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    <p>The Proposed Watermarking scheme for HEVC.</p

    Comparison of PSNR, Frame Size and Payload at different range of QP for watermarked and original BQMall video sequence.

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    <p>Comparison of PSNR, Frame Size and Payload at different range of QP for watermarked and original BQMall video sequence.</p
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