Watermark embedding method and device based on zero-width character, equipment and storage medium

Abstract

The invention discloses a watermark embedding method, device and equipment based on zero-width characters and a storage medium, which are applied to the field of digital watermarking, watermark data are converted into binary watermark data, and a mapping rule table of the binary data and target zero-width characters is constructed based on the number of invisible characters in a text to be embedded; converting the binary watermark data into zero-width character watermark data based on a mapping rule table; deleting the target zero-width character from the invisible characters of the to-be-embedded text, and determining the text type of the to-be-embedded text; and determining an embedding position based on the text type of the to-be-embedded text, and embedding the zero-width character watermark data into the embedding position of the to-be-embedded text. According to the method, the mapping rule table of the binary data and the zero-width characters is constructed according to the number of the invisible characters in the to-be-embedded text, and the digital watermark is embedded based on the mapping rule table, so that the problem that the volume expansion rate of the text is too large after the watermark is embedded is avoided.

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