MULTI-WATERMARKING SCHEME FORGROUP USERS BASED ON VISUAL CRYPTOGRAPHY

• 作 者: YuanZhonglan XiaGuangsheng Wen
• 机 构: P.O.Box126,StateKeyLaboratoryofIntegratedServicesNetwork
• 出 处: 电子科学学刊：英文版
• 发表日期: 2005年4期
• 关键词: 数字水印 视觉密码 VCS 阴影图像 Digital watermarking Visual cryptography Multi-watermarking
• 基金项目: 国家自然科学基金，国家重点基础研究发展计划(973计划)，ISN Open Foundation

All watermarks are shared into shadow images using VCS(Visual Cryptography Scheme). Only one specific shadow (as a new watermark) is embedded into the host signal and the other ones are distributed to every user in each group as a key. In the watermarking