The present invention discloses a method and product for generating and embedding a
watermark image that is visible on
copying, relates to the technical field of
digital watermarking, and solves the problem that
watermark images generated by the prior art are difficult to simultaneously take into account concealed embedding of watermarks, low-operation generation, and efficient recognition. The key points of the technical solution are: embedding
watermark text into the lines of a watermark pattern through an improved
hybrid screening technology, which makes it difficult for the
naked eye to recognize the watermark text, thereby realizing concealed embedding of the watermark text; adopting the improved
hybrid screening technology to generate a watermark image, the generation of the watermark image only involves
matrix addition and multiplication, without complex operations, and with low operation requirements; in the generated watermark image, the watermark text area and the non-watermark text area are composed of different screening dots, and based on the difference in
processing of different screening dots by
copying equipment, the watermark text can be recognized by the
naked eye after
copying, without the need for complex
image processing.