Example of segmenting 8×8 coefficients data into a series of 2×2 blocks.

<p>Example of segmenting 8×8 coefficients data into a series of 2×2 blocks.</p

PSNR quality predicted values for Y-components of intra and inter frames for six stego videos sequences.

<p>(a) I-frame, (b) B-frame and (c) P-frame.</p

Samples of SSIM quality map for Y-components of the I-frame within the 3^rd GOP of the stego MPEG-2 "Suzie" using different steganographic methods.

<p>(a) BPCS, (b) EBBD, (c) PVD, (d) EPVD and (e) TPVD.</p

Ranking the coefficients locations for each <i>B</i>_<i>C</i>(<i>i</i>) block.

<p>Ranking the coefficients locations for each <i>B</i>_<i>C</i>(<i>i</i>) block.</p

Percentage average alteration in video file size and compression ratio when I, B or P-frames are considered as a cover using techniques for the scenario that the data payload of 32768 bits are embedded in the MPEG-2 encoder.

<p>Percentage average alteration in video file size and compression ratio when I, B or P-frames are considered as a cover using techniques for the scenario that the data payload of 32768 bits are embedded in the MPEG-2 encoder.</p

Flowchart for data extraction in the compressed domain using EBBD steganographic scheme.

<p>Flowchart for data extraction in the compressed domain using EBBD steganographic scheme.</p

Summary of BER values of different steganographic techniques for compression attack.

<p>Summary of BER values of different steganographic techniques for compression attack.</p

Data hiding results with the intra and the inter frames of the test video sequences for different steganographic techniques for the scenario that the data payload of 32768 bits are embedded in the MPEG-2 encoder.

<p>Data hiding results with the intra and the inter frames of the test video sequences for different steganographic techniques for the scenario that the data payload of 32768 bits are embedded in the MPEG-2 encoder.</p

Flowchart for data embedding in the compressed domain using EBBD steganographic scheme.

<p>Flowchart for data embedding in the compressed domain using EBBD steganographic scheme.</p

An example of selected 4x4 sub-block of AC- QTCs with embedded data.

<p>(a) Before embedding and (b) after embedding.</p