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Page History: Watermarking

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Page Revision: 2010/12/20 13:12

protect the rights of their owners

• Copyright identification
• User identification or fingerprinting
• Authenticity determination
• Automated monitoring
• Copy protection
  

조건

• 추가된 워터마크는 눈에 보이지 않아야 함
• 어떤 경우에서던지 제거할수 없이 강력하여야 함
• 저작자의 정보를 내장
• 내장된 디지털워터마크는 복잡해야 한다.
  

visible watermark

Invisible Watermark

깨지기 쉬운 워터마크

강력한 워터 마크

• compression, filtering cropping, rotation, resampling, additional watermark or noise
• A typical image watermarking system
  

DCT-based watermarking

Mark insertion

1. Setp1

2. Setp2

3. Setp3

4. Setp4

5. Setp5

Mark extraction

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This Program is released under the GNU General Public License v2. View the GNU General Public License v2 or visit the GNU website.