Digital watermark method capable of simultaneously resisting various attacks

Abstract

The invention discloses a digital watermark method capable of simultaneously resisting various attacks, belonging to the field of digital watermark. The invention particularly relates to a digital watermark method capable of simultaneously resisting attacks, such as clipping, scaling, filtering, noise and the like. At present, the most published digital watermark technologies only can resist certain common geometric attacks, noise attacks and filtering attacks, wherein geometric attacks do not contain clipping attacks, only one attack can be resisted once, and the combined attack of various attacks can not be resisted. The invention relates to the digital watermark method which is characterized in that different types of watermark information are embedded into a carrier image, specifically comprising the steps of embedding and extracting the watermark; the watermark can be converted into binary information with a specific length; the watermark becomes a 'pseudo watermark' by coding, correcting errors and adding a watermark head; then, the obtained 'pseudo watermark' is embedded into the carrier image; in the extraction process, the 'pseudo watermark' is obtained firstly; and then an original watermark is obtained. With the method, clipping attack and image scaling attack can be effectively resisted.

Description

Technical field: [0001] The invention belongs to the field of digital watermarking, and in particular relates to a digital watermarking method capable of simultaneously resisting attacks such as cutting, zooming, filtering and noise. Background technique: [0002] Most of the digital watermarking technologies that have been disclosed so far can only resist some common geometric attacks, noise attacks, and filtering attacks. Among them, geometric attacks do not include cropping attacks, and they can only resist one kind of attack at a time, and cannot resist the combination of multiple attacks. attack. Some people have proposed some anti-cropping watermarking techniques, but the watermarking information involved in these techniques is a picture, and no one has proposed a binary (01) technique for watermarking information. If the watermark information is a picture, the extracted watermark may be incomplete, as long as a rough configuration is restored and the copyright of the...

AI Technical Summary

Problems solved by technology

[0002] Most of the digital watermarking technologies that have been disclosed so far can only resist some common geometric attacks, noise attacks, and filtering attacks. Among them, geometric attacks do not include cropping attacks, and they can only resist one kind of attack at a time, and cannot resist the combination of multiple attacks. attack

Some people have proposed some anti-cropping watermarking technologies, but the watermarking information involved in these technologies is a picture, and no one has proposed a binary (01) technology for watermarking information

Images