深度伪造检测与防御

7月 10, 2021

“深度伪造”（Deepfake）是指利用人工智能等技术合成虚假信息，配合社交网络传播会给网络安全、数据安全和信息安全带来重大威胁，进而对政治、军事、经济、社会安全带来严峻挑战。各国政府、科研机构和企业高度重视深度伪造的风险，积极部署相关的研究和防御。我们针对伪造手段和伪造内容两个方面，从信号、内容和语义三个层面研究智能伪造的检测识别取证技术。研究智能伪造系统（算法）的指纹提取、识别与追踪技术，研究基于人物软生物特征的智能伪造检测与识别技术，致力于解决当前检测技术鲁棒性低、适用性窄、可解释性差等问题。

王伟
王伟
副研究员、硕导

主要从事多媒体内容安全、人工智能安全、多模态内容分析与理解等方面的研究工作。

学术论文

DFGC 2022: The Second DeepFake Game Competition
This paper presents the summary report on our DFGC 2022 competition. The DeepFake is rapidly evolving, and realistic face-swaps are …
彭勃, 项伟, Yue Jiang, 王伟, 董晶, 孙哲南, Zhen Lei, Siwei Lyu
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RiDDLE: Reversible and Diversified De-Identification With Latent Encryptor
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SNIS: A Signal Noise Separation-Based Network for Post-Processed Image Forgery Detection
Image forgery detection has aroused widespread research interest in both academia and industry because of its potential security …
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面向轻量级深度伪造检测的无数据模型压缩
目的：尽管现有的深度伪造检测方法已在各大公开数据集上展现出了极佳的真伪鉴别性能，但考虑到运行过程中耗费的巨大内存占用和计算成本，如何实现此类模型的在线部署仍是一个具有挑战性的任务。对此，本文尝试利用无数据量化的方法开发轻量级的深度伪造检测器。方法：在保证准确率损失较少的 …
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AdaDeId: Adjust Your Identity Attribute Freely
Face de-identification has drawn increasing attention in recent years. It is important to protect people’s identity information …
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Contrastive Knowledge Transfer for Deepfake Detection with Limited Data
Nowadays forensics methods have shown remarkable progress in detecting maliciously crafted fake images. However, without exception, the …
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Defending Against Deepfakes with Ensemble Adversarial Perturbation
Maliciously manipulated images and videos, represented by prevalent deepfakes, can easily deceive human and mislead the public …
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Counterfactual Image Enhancement for Explanation of Face Swap Deepfakes
Highly realistic AI generated face swap facial imagery known as deepfakes can easily deceive human eyes and have drawn much attention. …
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Detecting Compressed Deepfake Videos in Social Networks Using Frame-Temporality Two-Stream Convolutional Network
The development of technologies that can generate Deepfake videos is expanding rapidly. These videos are easily synthesized without …
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IrisGuard: Image Forgery Detection for Iris Anti-spoofing
With the development of generative models, new types of fake iris have emerged. Distinguished from traditional spoofing means caused by …
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Robust Face-Swap Detection Based on 3D Facial Shape Information
Maliciously-manipulated images or videos - so-called deep fakes - especially face-swap images and videos have attracted more and more …
管伟楠, 王伟, 董晶, 彭勃, 谭铁牛
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开放环境下自适应聚类优化包络的相机来源取证
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DFGC 2021: A Deepfake Game Competition
This paper presents a summary of the DeepFake Game Competition (DFGC) 20211. DeepFake technology is developing fast, and realistic …
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A Features Decoupling Method for Multiple Manipulations Identification in Image Operation Chains
Recently, many forensic techniques have been developed to detect the use of a certain processing operation. When utilizing several …
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Feature Pyramid Deep Matching and Localization Network for Image Forensics
To advance the state of the art of image forensics technologies, a new formulation of splicing localization is proposed, which aims to …
叶奎, 董晶, 王伟, 彭勃, 谭铁牛
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On the Generalization of GAN Image Forensics
Recently GAN generated face images are more and more realistic with high-quality, even hard for human eyes to detect. On the other …
轩心升, 彭勃, 王伟, 董晶
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Image Forensics Based on Planar Contact Constraints of 3D Objects
Standing objects on planar surfaces are common to see in images, e.g., people on the ground. For most objects to stay stable on the …
彭勃, 王伟, 董晶, 谭铁牛
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Position Determines Perspective: Investigating Perspective Distortion for Image Forensics of Faces
This paper points out a new telltale trace - the characteristic of perspective distortion (CPD), for the image forensics of faces. The …
彭勃, 王伟, 董晶, 谭铁牛
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Optimized 3D Lighting Environment Estimation for Image Forgery Detection
Image forgery is becoming a growing threat to information credibility. Among all kinds of image forgeries, photographic composites of …
彭勃, 王伟, 董晶, 谭铁牛
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Image Forgery Detection Based on Semantic Image Understanding
Image forensics has been focusing on low-level visual features, paying little attention to high-level semantic information of the …
叶奎, 董晶, 王伟, Jindong Xu, 谭铁牛
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Automatic Detection of 3D Lighting Inconsistencies via a Facial Landmark Based Morphable Model
Existing 3D lighting consistency based forensic methods have some practical problems. They usually require additional images and human …
彭勃, 王伟, 董晶, 谭铁牛
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Improved 3D Lighting Environment Estimation for Image Forgery Detection
3D lighting environment is an important clue in an image that can be used for image forgery detection. Existing forensic methods …
彭勃, 王伟, 董晶, 谭铁牛
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Detection of Computer Generated Faces in Videos Based on Pulse Signal
The rapid development in the field of computer graphics (CG) makes it quite easy to create photo-realistic images and videos. This …
彭勃, 王伟, 董晶, 谭铁牛
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Exploring DCT Coefficient Quantization Effects for Local Tampering Detection
In this paper, we focus on local image tampering detection. For a JPEG image, the probability distributions of its DCT coefficients …
王伟, 董晶, 谭铁牛
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CASIA Image Tampering Detection Evaluation Database
Image forensics has now raised the anxiety of justice as increasing cases of abusing tampered images in newspapers and court for …
董晶, 王伟, 谭铁牛
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