水印与信息隐藏及隐秘术密切相关。信息隐藏是一种在较大范围内使用的一个术语；而隐一词来自古希腊词汇steganos graphia，其意义为“秘密地写”，是一种隐秘通信技术；水印一种不被感知地在作品中嵌入某些信息以保护作品的技术。-Watermarking and information hiding and secret technique closely related. Information hiding is used in the larger context of a term　the hidden word from the ancient Greek word steganos graphia, its meaning " secret writing" , is a secret communication technology　watermark in a non-perceived works to protect the works of some of the information embedded in the technology.