The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2013
Filed:
Dec. 17, 2009
Jing-ming Guo, Taipei County, TW;
Ming-feng Wu, Taipei County, TW;
Jing-Ming Guo, Taipei County, TW;
Ming-Feng Wu, Taipei County, TW;
National Taiwan University of Science and Technology, Taipei, TW;
Abstract
An image processing method combining compression and watermark techniques is provided. In the method, a block is taken as a unit, and two ordered dither arrays mutually conjugate are used to code an original image, so as to insert information of a watermark into the original image during the coding process. Accordingly, the method generates a compressed image gives consideration to the compression ratio, the image quality and the data safety. On the other hand, the method also provides a procedure to extract the watermark from the compressed image, in order to verify whether the compressed image has been modified illegally.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile