Journal of Applied Sciences ›› 2023, Vol. 41 ›› Issue (2): 240-251.doi: 10.3969/j.issn.0255-8297.2023.02.005

• Digital Media Forensics and Security • Previous Articles     Next Articles

Research Progress on Glyph Perturbation for Anti-print Scanning and Anti-screen Shooting

WANG Chen1, YAO Ye2, LI Li3   

  1. 1. School of Electronics and Communication Engineering, Zhejiang Post and Telecommunication College, Shaoxing 312366, Zhejiang, China;
    2. School of Cyberspace, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang, China;
    3. School of Computer and Software, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang, China
  • Received:2022-10-27 Online:2023-03-31 Published:2023-03-29

Abstract: In this paper, we provide a review on the research progress of glyph perturbation. Following an introduction of the application scenarios of glyph perturbation, the existing works related to glyph perturbation for anti-print scanning and anti-screen shooting are systematically presented. The existing methods can be classified into two categories: traditional glyph perturbation and deep learning-based glyph perturbation. According to the attributes of characters, the former can be subdivided into pixel flipping, height adjustment, spacing adjustment, stroke adjustment, feature point adjustment, and skeleton adjustment. From the perspective of high-dimensional features, the latter slightly modifies the glyph of characters to embed additional messages. According to the property of the generated data, it can be divided into perturbed text image generation and vector font generation. The glyph perturbation methods are compared and analyzed in terms of robustness, embedding capacity, and complexity. Finally, the challenges and prospects of glyph perturbation are summarized.

Key words: glyph perturbation, text information hiding, vector font, anti-print scanning, anti-screen shooting

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