应用科学学报 ›› 2026, Vol. 44 ›› Issue (5): 800-815.doi: 10.3969/j.issn.0255-8297.2026.05.007

• 智能信息处理 • 上一篇    下一篇

基于三元组特征分布损失的GAN生成人脸反取证方法

尚雨婷, 范春年, 陈北京   

  1. 南京信息工程大学 计算机学院, 江苏 南京 210044
  • 收稿日期:2024-04-17 发布日期:2026-10-09
  • 通信作者: 陈北京,教授,博士生导师,研究方向为多媒体内容安全、图像处理、模式识别。E-mail:nbutimage@126.com
  • 基金资助:
    国家自然科学基金(No.62572251)

GAN-Generated Face Anti-forensic Method Based on Triplet Feature Distribution Loss

SHANG Yuting, FAN Chunnian, CHEN Beijing   

  1. School of Computer Science, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu, China
  • Received:2024-04-17 Published:2026-10-09

摘要: 针对现有生成对抗网络(generative adversarial network,GAN)生成人脸的反取证方法可转移性不强的问题,设计了三元组特征分布损失(triplet feature distribution loss,TriFDL),并据此提出一种基于TriFDL的GAN生成人脸反取证方法。该方法通过优化TriFDL训练反取证模型的扰动生成器,使扰动生成器输出的反取证人脸尽可能落入所有取证模型共同的真实人脸决策区域,从而实现对多个取证模型的欺骗并提升方法可转移性。此外,为了增强抵抗JPEG压缩的鲁棒性,在反取证模型训练过程中引入JPEG压缩模拟模块。在基于StyleGAN生成的人脸数据集上进行的实验表明,与7种已有方法相比,所提方法对黑盒模型的平均攻击效果最优,受JPEG压缩影响最小,这表明提出方法具有较强的可转移性和鲁棒性。

关键词: 生成人脸, 生成对抗网络, 反取证, JPEG压缩

Abstract: To address the limited transferability of existing anti-forensic methods for generative adversarial network (GAN)-generated faces, this study designed a triplet feature distribution loss (TriFDL) and proposed a TriFDL-based anti-forensic method for GANgenerated faces. The proposed method optimized TriFDL to train the perturbation generator in the anti-forensic model, enabling the anti-forensic faces generated by the perturbation generator to fall, as much as possible, within the common real-face decision region shared by all forensic models, thus deceiving multiple forensic models and improving transferability. In addition, to enhance robustness to JPEG compression, a JPEG compression simulation module was introduced during the training of the anti-forensic model. Experiments conducted on a dataset of StyleGAN-generated faces show that, compared with seven existing methods, the proposed method achieves the best average attack performance against black-box models and is the least affected by JPEG compression, demonstrating strong transferability and robustness.

Key words: generated face, generative adversarial network, anti-forensic, JPEG compression

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