| EPSRC Reference: |
GR/M37691/01 |
| Title: |
VITEX: A HIDDEN, ROBUST, LOW-BIT-RATE CHANNEL FOR WATERMARKING AND DATA IN VIDEO SYSTEMS |
| Principal Investigator: |
Tomlinson, Professor M |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Communication & Electronic Eng |
| Organisation: |
University of Plymouth |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
08 April 1999 |
Ends: |
07 December 2002 |
Value (£): |
185,106
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| EPSRC Research Topic Classifications: |
| Digital Signal Processing |
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| EPSRC Industrial Sector Classifications: |
| Communications |
Creative Industries |
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Summary on Grant Application Form |
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The research is concerned with signal processing and coding in communication systems (Including multimedia systems) and so falls well within the remit of the IT/CS programme. Specifically, the research is an extension of the video 'water marking ' concept. Watermarking permanently embeds a pseudo-noise sequence into video frames with the primary objective of protecting copyright. The owner, using cross-correlation can detect the sequence. The project embraces watermarking, but also extends this concept to provide a hidden, low bit-rate channel (with a target rate of 1 K bit/s) by using spread spectrum and state of the art error control coding. This is an idea application for turbo codes since low code rate and is acceptable, and the low bit rate makes real time turbo decoding more feasible. The use of error control also increases the robustness of the basic watermark to compression and determine attack. Emphasis is upon marking compressed (MPEG-2) video (since this is probably required in practice) and the use of video-dependent, i.e. perceptual-based modulation of the MPEG-2 DCT coefficients. Robustness will also depend upon the spreading sequence and both advance binary and non-binary sequences will be investigated.The project will place considerable emphasis upon combating different forms of attack.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.plym.ac.uk |