发明授权
- 专利标题： Steganographic system, method, program and storage medium therefor
- 专利标题（中）： 隐写系统，方法，程序和存储介质
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申请号： US09542295申请日： 2000-04-04
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公开(公告)号： US06707927B1公开(公告)日： 2004-03-16
- 发明人: Kazumasa Kita , Hiroshi Yoshiura , Yutaka Kurosu , Miki Tanaka , Shinobu Eikawa , Tomoyuki Kaji
- 申请人： Kazumasa Kita , Hiroshi Yoshiura , Yutaka Kurosu , Miki Tanaka , Shinobu Eikawa , Tomoyuki Kaji
- 优先权： JP11-097291 19990405
- 主分类号： G06K900
- IPC分类号： G06K900
摘要：
There is provided a steganographic system which can dispense with an original image during extraction of watermark by determining a position at which an optimum space dependent physical quantity is embedded as a watermark complying with an image such that the picture quality can be prevented from being deteriorated, embedding watermark information in the image, generating information such as watermark embedding position information and receiving a watermark embedded image and watermark embedded position information to extract watermark information.
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