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Digital printing method capable of resisting printing and scanning attacks based on fused fonts

A technology of anti-print scanning and digital watermarking, applied in electrical digital data processing, image watermarking, image data processing and other directions, can solve the problems of small hidden information capacity, damage to the original document structure, etc., to ensure anti-print scanning, document beauty, Addressing the effects of poor robustness

Active Publication Date: 2019-04-05
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] In view of this, the present invention provides a digital watermarking method based on fused fonts that is resistant to printing and scanning attacks, to solve the problem that the traditional digital watermarking method will cause damage to the original document structure and the hidden information capacity is small

Method used

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  • Digital printing method capable of resisting printing and scanning attacks based on fused fonts
  • Digital printing method capable of resisting printing and scanning attacks based on fused fonts
  • Digital printing method capable of resisting printing and scanning attacks based on fused fonts

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Embodiment Construction

[0047] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0048] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0050] The embodiment of the present invention p...

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Abstract

The invention discloses a digital watermarking method capable of resisting a printing scanning attacks based on fused fonts. The method specifically comprises the following steps: constructing a common Chinese character font library and a Chinese font library; Determining a font of the target document; Carrying out style migration on the source font picture and the target font picture of the Chinese characters in the common Chinese character library through the CGAN to generate a new font picture set; Screening the new font picture set to prepare a font image library; And according to the to-be-embedded information, finding out a target new font picture from the font image library, and replacing the to-be-replaced Chinese character in the original document. According to the method, different fonts are fused, the fonts most similar to the original document fonts are selected for Chinese character replacement, multi-bit information can be embedded into one Chinese character, the watermark information amount hidden in one document is greatly increased, and the problems that robustness is poor, the capacity is small and the like due to the fact that digital watermarks are added in a space domain in the prior art are effectively solved.

Description

【Technical field】 [0001] The invention relates to a digital watermarking technology, in particular to a digital watermarking method based on fused fonts against printing and scanning attacks. 【Background technique】 [0002] Digital watermarking technology refers to embedding digital information in digital images, which is invisible. Digital watermarking has a wide range of uses and can be applied to many fields such as information hiding, image authentication, and copyright protection. People have achieved fruitful research on digital watermarking technology, but most of the research on digital watermarking mainly focuses on the addition or addition of digital image watermarking. extract. [0003] At present, for the addition of digital image watermarks after digital / analog and analog / digital conversion, digital watermarks are usually added in image space domains such as line spacing or word spacing, or digital watermarks are hidden for font edge pixel flips, but these meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/21G06T1/00G06N3/04
CPCG06T1/005G06T2201/0062G06F40/109G06N3/045
Inventor 牛少彰王贺高玉龙王心怡
Owner BEIJING UNIV OF POSTS & TELECOMM
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