Image Adaptive Watermarking Project Proposal

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Image Adaptive WatermarkingProject Proposal

• Ryan Johnson
• EE6886 Multimedia Security Systems
• Prof. Ching-Yung Lin
• April 5, 2006

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Outline

• Introduction of proposed project
• Project purpose and objectives
• Techniques and references
• Project plan
• Research
• Experimentation
• Result evaluation
• Preliminary schedule

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Project Proposal

• Image Adaptive (IA) Watermarking
• Attempt to improve the conflict between the three
  image watermarking metrics
• Attempt to overcome problems with uniform images
• Utilizes human visual models to maximize
  watermark length and power.

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Project Purpose/Objectives

• Understand Human Vision Model
• Human visual system
• Just Noticeable Difference (JND)
• Compare IA watermarking schemes
• DCT vs. Wavelet Transform
• Spread Spectrum Technique (Cox et al)
• Compare Human Vision Models within watermarking
  schemes

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Techniques

• Discrete Wavelet Transform
• Discrete Cosine Transform
• Human Vision Models
• Obtaining JND thresholds
• Applying human vision models
• Watermark Extraction

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References

• Watson (NASA), Rubin (NYU)
• Human visual studies
• Podilchuk/Zeng (Purdue)
• IA watermarking based on DCT and wavelet
  transform
• Cao et al (Mississippi State Univ.)
• Redundant Wavelet Transform

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Project Plan

• Research Tasks (Week 1)
• Human Vision Models
• How human vision works
• How the human vision models were created
• Proposed human vision models
• Can I model a human vision system?
• Research various IA watermarking schemes

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Project Plan

• Experimentation/Implementation
• Implement IA watermarking schemes (Week 2 3)
• Spread Spectrum technique (Cox et al)
• Different IA schemes
• Different human vision models
• Evaluate results (Week 3 - 4)
• JND threshold testing/validation
• Test procedure - determine variables and minimize
• Report results (Week 5)
• Write report

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Evaluating Results

• JND Thresholds
• Compare colleague test results to proposed human
  vision models
• Watermarking metrics
• Transparency
• Human comparison test
• PSF
• Robustness - Attacks
• JPEG Compression
• Rescaling
• Cropping
• Any combination
• Capacity
• Maximum intensity watermark
• Maximum length watermark
• Overall improvement over Spread Spectrum
• Compare results of images with large, smooth
  areas for each type of watermarking scheme

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Questions?