AsiaIPEX is a one-stop-shop for players in the IP industry, facilitating IP trade and connection to the IP world. Whether you are a patent owner interested in selling your IP, or a manufacturer looking to buy technologies to upgrade your operation, you will find the portal a useful resource.
Back to search results

Digital watermarking algorithms for recovery and authentication of compressed images

Summary
Shih-Fu Chang, Ph.D.
Technology Benefits
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
Technology Application
Authenticator for compressed and altered imagesRecovery system for damaged image filesDigital image management system for photographers, artists, publishers, etc.
Detailed Technology Description
Shih-Fu Chang, Ph.D.
*Abstract
None
*Inquiry
Satish RaoColumbia Technology VenturesTel: (212) 854-8444Email: TechTransfer@columbia.edu
*IR
M01-018
*Principal Investigator
*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
Country/Region
USA

For more information, please click Here
Mobile Device