Invention Grant
- Patent Title: Method and system for efficient watermarking of video content
- Patent Title (中): 视频内容的高效水印方法和系统
-
Application No.: US13027675Application Date: 2011-02-15
-
Publication No.: US08379911B2Publication Date: 2013-02-19
- Inventor: Aditya Vashistha , Rajarathnam Nallusamy , Sanjoy Paul
- Applicant: Aditya Vashistha , Rajarathnam Nallusamy , Sanjoy Paul
- Applicant Address: IN Bangalore, Karnataka
- Assignee: Infosys Technologies Limited
- Current Assignee: Infosys Technologies Limited
- Current Assignee Address: IN Bangalore, Karnataka
- Agency: Michael Best & Friedrich LLP
- Priority: IN3779/CHE/2010 20101210
- Main IPC: G06K9/00
- IPC: G06K9/00 ; H04L9/32

Abstract:
A method for watermarking of video content is provided. An averaged scene image is computed for each scene of video content by performing averaging of frames present in each scene of video content. For each averaged scene image a set of random numbers are generated using a secret key to identify pixels at random locations of the averaged scene image. The secret key is associated with a watermark pattern corresponding to each averaged scene image. The identified pixels in each averaged scene image are mapped to each pixel of corresponding watermark pattern to obtain respective mapped pixels. Using respective mapped pixels, values of verification information are fetched and assigned using predetermined rules. The values of verification information are arranged to obtain first visual cryptographic share of watermark pattern for each averaged scene image.
Public/Granted literature
- US20120148089A1 METHOD AND SYSTEM FOR EFFICIENT WATERMARKING OF VIDEO CONTENT Public/Granted day:2012-06-14
Information query