Title: Apparatus and method for inlaying machine-readable watermark into picture
Application Number: 200610031217 Application Date: 2006.02.13
Publication Number: 1837955 Publication Date: 2006.09.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G03C11/02,G06T1/00,H04N1/00,G06K9/00
Applicant(s) Name: Hunan Yacheng Technology Co., Ltd. Address: 410007
Inventor(s) Name: Tan Jichun, Tang Xinhuai, Jia Hui, Zhou Pu, Wang X
Attorney & Agent: zhao jinghua
Abstract:
     This invention relates to an apparatus and method for inlaying machine-readable watermark into picture. To embed an invisible false proof mark, with a special illuminating beam coder and coding background screen, embedding a random illuminated coded watermark pattern and background coded watermark pattern, as well as the (1) object shape, (2) character and false proof mark, and (3) self-defined mark of the shooting field, all into the photo in the exposing moment based on the optical synthesis principle. To check the mark, converting the photo into a digital image by a photo-electric device, and using the machine-read device to extract the watermark and hidden information with the key for decision. This invention provides technical guarantee to opposite department.
Time: 8