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Verimatrix / Siemens Watermarking Technology Application

Verimatrix / Siemens Watermarking Technology Application. A presentation to the CPTWG.

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Verimatrix / Siemens Watermarking Technology Application

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  1. Verimatrix / SiemensWatermarking Technology Application A presentation to the CPTWG

  2. Verimatrix in partnership with Siemens ICN is able to provide a video watermarking solution for the ‘analog hole’ based upon technology developed initially by the Fraunhofer Institute and licensed by Verimatrix.

  3. Overview Applied to the Analog Hole, the solution is: • a novel video watermarking technology application • highly viable as a video watermark: • Invisible – conveys CCI • Extremely reliable and robust • Multi-layered for excellent security • Highly resistant against sophisticated attack. • Economic for inclusion in low-cost codec chips for CE and IT devices Intended for use in broadcast, cable, satellite, and fixed media applications

  4. How it works Device Platforms with Analog outputs Digital Recorder WM Detector Cable Analog Video with Watermark Satellite Analog to Digital Copy rules obeyed > > DVD Player WM Detector VCR DVD R/RW Internet Other A/D converters: DTV, PC, DVR, …

  5. CCI Primary States

  6. Intellectual Property • Patents: • US: # 6,359,985 (with the priority date on Jun 16, 1995). This patent covers a set of digital watermarking methods, including a method for watermarking color or grayscale images or videos by slightly modifying coefficients in frequency representation (particularly in DCT domain) of digital data. • Europe: EP 879535B1, DE 195 219 69 C1 • Pending in Japan, Canada, … (WO 97/00578 A1) • Backed by Legal Opinions

  7. Technical Information • Frequency-based (DCT-based) perceptual modeling • for best invisibility • Tightly-bound with the content of digital data • cannot be lifted • Securely embedded • multiple layer security • Watermark survives all kinds of video processing typically used in a professional environment: • copying, editing, further compression stages, • logo insertion, or conversion to the analog domain, • discoverable in Digital to Digital transcoding.

  8. MPEG Encoder Overview Pre- processing Motion Estimation DCT Quantization Variable Length Coding MPEG Video Output Input Video Example of standard MPEG encoder

  9. MPEG Encoder withWatermark Insertion W E A M T B E E R D M D A E R R K Pre- processing Motion Estimation DCT Quantization Variable Length Coding MPEG Video Output Input Video Example of standard MPEG encoder with Watermark Inserter

  10. Positions Original Data Position Sequence Generator Block-based DCT Watermark Embedding System Block-based IDCT Watermarked Data Secret Key Watermark Information (Payload) Watermark Embedding

  11. Watermark insertionusing DCT coefficients DCT Coefficients (post Quantization) DCT Coefficients (post Watermarking) W E A M T B E E R D M D A E R R K For the bit being added - that the ratio of the two DCT values must be set such that the first bit is larger than the second bit. Meaning the bit value of 16 must be changed to be larger than 17. Depending on the perceptual model the value 17 could have been changed to 15 to establish the correct ratio. From the input DCT coefficients the Ratio of the highlighted DCT values will be used to add a watermark bit

  12. Watermark detection using DCT coefficients DCT Coefficients (post inverse quantization) D E T E C T O R Extracted watermark payload bits is based on the ratio of the two highlighted DCT coefficients

  13. MPEG Decoder Overview Variable Length Decoding Inverse Quantization IDCT Post Processing Output Video MPEG Input Example of standard MPEG decoder

  14. MPEG Decoder withWatermark Detector W D A E T T E E R C M T A O R R K Output Video Variable Length Decoding Inverse Quantization IDCT Post Processing MPEG Input Example of standard MPEG decoder with Watermark Detector

  15. Feature Summary • Watermarking can occur in DCT-based compressed video (MPEG1, MPEG2, MPEG4, H.264, WM9, other) • Detection in both compressed or non-compressed video • Watermarking each frame (may partially watermark P- or B- frames if direct watermarking in compressed data required) • Support for all MPEG1 and MPEG2 profiles: MP@ML, 4:2:2P@ML, and MP@HL, other • The MPEG-2 video materials can be: • long GOP or I-frame only • variable (VBR) or constant (CBR) bit rates • Program Streams or Transport Streams • 16:9 and 4:3 aspect ratios supported

  16. Feature Summary(cont.) • Very low false positive rate is achieved by aggregating watermark signals from video frames (in time domain) • Robust against, for example: • D/A, A/D, and VHS conversion • Down to 200K bps Divx compression • Format conversion (PAL<->NTSC) • Scaling, shifting and cropping • Low-pass filtering • Noise addition • Invisibility: • Passed several tests by professional independent organizations

  17. Feature Summary(cont.) • Any bit rates from 500 Kbps (MPEG-4) up to 50 Mbps (MPEG-2, 4:2:2 profile @ main level) • High Level coding capabilities (HD) • PAL and NTSC supported • Codec independent

  18. Feature Summary(cont.) “Tamper Proofing” Through Onion Skin “Peel-Away” • Watermark detectors look for one of several possible marks. • If one mark is compromised, detector can move to one of the alternate marks to restore usefulness. • Different marks could assert different codes.

  19. CompetitiveAdvantages • Low Insertion Overhead:watermark embedding can be performed on compressed MPEG (in DCT domain); up to 10x real time can be achieved • Low-cost:both watermark embedding and detection can be implemented in chips very economically; DCT/IDCT processing circuitry is very well known in video industry. • * * * Efficient * * *: To change CCI bits, watermarking of analog video will require an MPEG Encode. Verimatrix DCT watermarking does not require MPEG encode. • Robust: watermark survives common video processing such as recompression (e.g. to 200kbps), A/D and D/A, cropping • Invisible:DCT-based perceptual model, works in HD • Anti-lift:watermarks can’t be lifted from one image to another • Anti-filtering:watermark cannot be removed by analog or digital filtering

  20. Test Results Successful Watermark Distortion Survivability: • Distortions:1. Interleave of 2 sources: 2 src files banded in avisynth (e and b)2. Rotation: Rotated 1 degree in vdub3. Cropping: cropped to remove traces of rotate4. Scaling: resize to 512 in vdub5. Compression: xvid encoding at 750kbps • Distortions:1. Interleave of 5 files: 5 src files banded in avisynth2. Low-pass filter: dctfilter in avisynth (1,1,1,.5,.5,0,0,0)3. Scaling: resize to 512 in vdub4.  Compression: xvid encoding at 750kbps • More data to be made available soon…

  21. Test Results (Cont.) Other attacks that the watermark will survive: • Aspect ratio changes • Cut several top/bottom lines • Divx conversion with cropping • Filtering • Averaging watermarked copies

  22. DevelopmentSchedules • Core product commercially viable now • ARDG Analysis Matrix available • Development for application to Analog Hole, first testable prototype scheduled July 2004. Testing with lab environment to begin early August • Chip development work, and improvements (enhancements) currently scheduled to meet goal of end of Summer 2004 for complete cycle • Closed Security Audit scheduled at end of cycle by third party auditing agency • Marks to be licensed for all business models • No royalties to be requested of CE and IT product implementers • 25 Year Tariff lifetime • Full mark maintenance plan

  23. Conclusion • Proven and available technology • Invisible and robust mark • Known use royalties for all models • Low cost detection - no MPEG encode needed • HD capable • Total dedication to maintaining the effectiveness of the mark

  24. Presentation Addendum

  25. DVD Authoring adding CCI information Standard MPEG Encode Processing CCI Watermark Added to Video MPEG Video Output with Embedded CCI Input Video CCI Watermark information is added to video after standard MPEG Encoding Process. The CCI Watermark can be added to any video before golden master is ready for DVD production, or master video is ready for distribution

  26. False Detection Error Rate System False Detection Rate can be predetermined using error detection and correction codes (CRCs, BCH, Turbocodes) Detector can integrate watermark over several frames to build strength of watermark False detection error rates of 10-5 to 10-9can be achieved

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