STFANet:一个空间和时间特征聚合网络,用于在视频中检测假面孔
Guoren Yao1, Gaoming Yang2, Xintian Liu3
1School of Computer Science, Huainan Normal University, Huainan, Anhui, China.
PloS one
|December 10, 2025
概括
检测被操纵的视频是具有挑战性的. 空间和时间特征聚合网络 (STFANet) 通过整合空间和时间特征,有效地识别面部伪造,在基准数据集上实现高精度.
科学领域:
- 计算机视觉 计算机视觉
- 人工智能的人工智能
- 数字法医学数字法医学
背景情况:
- 视频合成技术的快速发展使得视频真实性验证变得越来越困难.
- 当前的检测方法往往忽略了全面的时空特征,主要依赖于框架内的空间文物和时间不一致.
- 这种限制限制了有效检测复杂视频操纵的能力.
研究的目的:
- 提出一个新的网络,空间和时间特征聚合网络 (STFANet),用于增强视频伪造检测.
- 通过有效利用时空特征来解决现有方法的局限性.
- 提高操纵视频检测的准确性和稳定性,特别是在面部伪造方面.
主要方法:
- 在STFANet中开发了一个双路径网络结构,以独立提取空间和时间特征.
- 集成提取的空间和时间特征,以创建高保真度的空间和时间表示.
- 整合了一个视觉转换器模块,以捕捉功能地图中的全球依赖关系,以增强表示.
主要成果:
- 在视频中检测面部伪造时,STFANet表现出了很高的有效性.
- 在基准数据集上取得了出色的表现:FaceForensics++上的AUC得分为0.9933,Celeb-DF上的AUC得分为0.9829.
- 分析证实,特征聚合显著提高了时空表示的质量.
结论:
- 拟议的STFANet有效地解决了视频真实性验证方面的挑战.
- 该网络集成空间和时间特征的能力,通过视觉变压器增强,导致卓越的伪造检测性能.
- STFANet在检测操纵视频,特别是面部伪造方面取得了重大进展.
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