A Digital Watermarking Method Against Print Scanning Attack Based on Fusion Fonts

A technology of anti-print scanning and digital watermarking, applied in image watermarking, electrical digital data processing, image data processing and other directions, can solve the problems of small hidden information capacity and damage to the original document structure, and achieve anti-print scanning and robustness. Good results

Active Publication Date: 2021-08-31
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

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  • A Digital Watermarking Method Against Print Scanning Attack Based on Fusion Fonts
  • A Digital Watermarking Method Against Print Scanning Attack Based on Fusion Fonts
  • A Digital Watermarking Method Against Print Scanning Attack Based on Fusion 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 based on fused fonts to resist printing and scanning attacks, which specifically includes the following steps: constructing a commonly used Chinese character library and a Chinese font library; determining the font of a target document; Perform style transfer between images and target font images to generate a new font image collection; screen the new font image collection to create a font image library; find out the target new font image from the font image library according to the information to be embedded, and replace the original document Chinese characters to be replaced in . By fusing different fonts, the present invention selects the font most similar to the original document font to replace Chinese characters, and can embed multi-bit information into a Chinese character, greatly increasing the amount of watermark information hidden in a document, effectively solving the original problem of adding numbers in the space domain. Watermarking brings problems such as poor robustness and small capacity.

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 & AuthorityPatents(China)
IPC IPC(8): G06F40/109G06T1/00G06N3/04
CPCG06T1/005G06T2201/0062G06F40/109G06N3/045
Inventor牛少彰王贺高玉龙王心怡
OwnerBEIJING UNIV OF POSTS & TELECOMM