steganography for secure digital watermarking
DESCRIPTION
Steganography for Secure Digital Watermarking. Pratheepan Yogarajah, Dr. Joan Condell, Dr. Kevin Curran, Prof. Paul Mc Kevitt University of Ulster, UK. Dr. Abbas Cheddad Umea University, Sweden. Steganography. Secret Data. Stego Object. Cover Image. Encoder. Key. Decoder. - PowerPoint PPT PresentationTRANSCRIPT
http://isrc.ulster.ac.uk
Steganography for Secure Digital Watermarking
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Pratheepan Yogarajah, Dr. Joan Condell, Dr. Kevin Curran, Prof. Paul Mc Kevitt
University of Ulster, UK
Dr. Abbas CheddadUmea University, Sweden
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Steganography
Key
Encoder
Cover Image
Secret Data
Stego Object
Decoder
Secret Data
Communications Channel
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Secure Digital Watermarking
Cover Image
Secret Data
Protected Image
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Digital content authentication
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Sorry - this is NOT original.
Test image Original image
Original Image Attacked Image
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Secret Data Cover Image Stego Object
Self-Embedding
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How to detect alterations (1/2)
Final ResultGrayscale image of
Altered image
Altered image
Extracted grayscale
image
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Original image Extracted image
How to detect alterations (2/2)
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Self-Embedding - Temporal information
UU SDW:American Beauty-045/789+0
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Key Frames
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Temporal content change detection
Original Video Attacked Video
Detected Video
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Conclusion A steganography based self-embedding technique
provides a solution for digital content authentication. Benefits
- Protects commercial value of digital content- Protects the secrecy of digital content- Protects digital content from modification
Applicable fields: film/animation, TV, games, music, images
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Thank You
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Secret Data Cover Image Stego Object
Self-Embedding
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How to detect alterations (1/3)
Altered Document
Recovered Document
Grayscale image of Altered Document
Final Result
Altered Document
Recovered Document
Grayscale image of Altered Document
Altered Document
Recovered Document