Considering the character of human visual system (HVS) and the actual demand in information protection,this paper describes a method to embed a digital watermark into a digital image in the spatial domain.

• 根据著作权、版权保护的实际需要 ；结合人眼视觉系统的有关特性 ；探讨了数字图像中数字水印的加入与提取方法 .