近年来，数字水印技术开始广泛用于数字图像，音频，视频和多媒体产品的版权保护。
In recent years, digital watermarking has been widely used in copyright protection for digital images, audio, video and multimedia products.
近年来，数字水印技术已经广泛应用于数字图像、音频、视频等多媒体产品的版权保护。
In recent years, digital watermarking has been widely used in copyright protection for digital image, audio, video or multimedia products.
数字水印是一种数字多媒体数据保护技术。
Digital watermarking is a technique which is used to protect digital multimedia data.
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