Digital watermark embedding device

The invention discloses a digital watermark embedding device comprising a body and a control component. The body includes a touch display and a camera. The control component includes an interface unit, an MPU unit, an image acquisition unit, a face image processing unit, an information input unit, an identity card information processing unit, a watermark generation unit, a digital watermark embedding unit, a USB input port, and a USB output port. The face image processing unit generates a face image feature code. The identity card information processing unit generates an identity card information feature code. The watermark generation unit uses a watermark generation algorithm to generate a digital watermark based on the face image feature code and the identity card information feature code. A digital watermark can be generated based on identity card information and face image information and embedded into an original image. By using identity card information and face image information, the uniqueness of digi