【摘要】 图象数字水印技术是一种在数字图象中嵌入数字信息 ,从而保护图象版权的方法。介绍了一种离散余弦变换 (DCT)域的图象水印方法 ,嵌入水印信息时考虑了人眼的视觉特性 ,具有较强的稳健性、视觉透明性。水印的检测采用统计的方法 ,不依赖原宿主图象更多还原

【Abstract】 Digital watermarking is an approach for copyright protection by embedding digital information into digital image. There is a watermarking method based on DCT domain introduced in this paper, which are designed to exploit aspects of the human visual system for both robustness and perceptual transparency. By exploiting the statistical properties of embedded sequence, the watermark can be reliably detected without resorting to the original uncorrupted image.更多还原