Digital watermarking algorithms for recovery and authentication of compressed images
- 总结
- Shih-Fu Chang, Ph.D.
- 技术优势
- Does not degrade image qualityAccepts legitimate and innocent alterations to images Detects malicious alterations such as cropping and replacementRecovers approximate pixel values in corrupted areasPatent information:Patent Issued (US 6,879,703)Tech Ventures Reference: IR M01-018
- 技术应用
- Authenticator for compressed and altered imagesRecovery system for damaged image filesDigital image management system for photographers, artists, publishers, etc.
- 详细技术说明
- Shih-Fu Chang, Ph.D.
- *Abstract
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None
- *Inquiry
- Satish RaoColumbia Technology VenturesTel: (212) 854-8444Email: TechTransfer@columbia.edu
- *IR
- M01-018
- *Principal Investigation
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- *Publications
- Lin C-Y, Chang S-F. "Semifragile watermarking for authenticating JPEG visual content" SPIE Proceedings 3971. 2000 May 9;140.
- *Web Links
- Patent number: US20030147547USPTO: US 6,879,703
- 国家/地区
- 美国
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