Name
Abstract | ||
|---|---|---|
The alteration of compressed video bitstream due to embedding of digital watermark tends to produce unpredictable video bit rate variations which may in turn lead to video playback buffer overflow/underflow or transmission bandwidth violation problems. This paper presents a novel bit rate control technique for real-time MPEG watermarking applications. In our experiments, spread spectrum watermarks are embedded in the quantized DCT domain without requantization and motion reestimation to achieve fast watermarking. The proposed bit rate control scheme evaluates the combined bit lengths of a set of multiple watermarked VLC codewords, and successively replaces watermarked VLC codewords having the largest increase in bit length with their corresponding unmarked VLC codewords until a target bit length is achieved. The proposed method offers flexibility and scalability, which are neglected by similar works reported in the literature. Experimental results show that the proposed bit rate control scheme is effective in meeting the bit rate targets and capable of improving the watermark detection robustness for different video contents compressed at different bit rates. |
Year | DOI | Venue |
|---|---|---|
2004 | 10.1109/ICIP.2004.1421641 | Image Processing, 2004. ICIP '04. 2004 International Conference |
Keywords | Field | DocType |
data compression,data encapsulation,variable length codes,video coding,watermarking,bit rate control scheme,compressed video bitstream,digital watermark embedding,multiple watermarked VLC codeword,real-time MPEG watermarking,transmission bandwidth violation,video playback buffer overflow-underflow | Digital watermarking,Computer science,Bit field,Real-time computing,Watermark,Artificial intelligence,Transmission time,Computer hardware,Bit manipulation,Computer vision,Arithmetic underflow,Data compression,Bit (horse) | Conference |
Volume | ISSN | ISBN |
4 | 1522-4880 | 0-7803-8554-3 |
Citations | PageRank | References |
2 | 0.43 | 5 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Sugiri Pranata | 1 | 2 | 0.43 |
| Yong Liang Guan | 2 | 6 | 2.50 |
| Hock Chuan Chua | 3 | 57 | 4.32 |