| Paper: | WA-P7.10 |
| Session: | Security V: Watermarking |
| Time: | Wednesday, September 19, 09:50 - 12:30 |
| Presentation: |
Poster
|
| Title: |
CAMCORDER CAPTURE ROBUST LOW-COMPLEXITY WATERMARKING OF MPEG-2 BIT-STREAMS |
| Authors: |
Mehmet Celik; Philips Research Europe | | |
| | Joop Talstra; Philips Research Europe | | |
| | Aweke Lemma; Philips Research Europe | | |
| | Stefan Katzenbeisser; Philips Research Europe | | |
| Abstract: |
Unauthorized re-distribution remains a significant threat for emerging electronic movie distribution services. In this paper, we propose a forensic tracking watermark for MPEG-2 bit-streams that can be employed to complement Digital Rights Management and conditional access systems in electronic movie distribution. The watermark is embedded by modulating a subset of quantization matrix entries, which are periodically present in the MPEG-2 headers. When observed over time the watermark can be detected even after cropping, de-interlacing, resizing and DivX compression at 300 kbps or after being captured with a video camera from a flat-screen TV. As the method modifies only a small part of the bit-stream (~100 bytes per second), it can be readily implemented in resource constrained environments like the current generation set-top boxes, without costly hardware upgrades. |
