基于改进三元组损失的伪造人脸视频检测方法

当前大部分伪造人脸检测技术使用深度学习来鉴别真实视频与伪造视频之间的特征差异,此类方法在未压缩视频上取得了不错的效果,但在检测经过压缩处理的视频时检测效果就会严重下降.针对此类问题,提出了基于改进三元组损失的伪造人脸视频检测方法.首先,使用伪影图生成器生成一幅伪影图来加深伪造人脸与真实人脸之间的特征差异;其次,使用改进的三元组损失来解决难例样本难以被正确检测的问题;最后,选用更适合人脸鉴伪的深度学习网络提取卷积特征.在FaceForensics++数据集上与目前领先的人脸鉴伪方法的对比表明,该方法检测准确率优于对比方法.

Fake face video detection method based on improved triplet loss

Most of the current fake face detection technologies use deep learning to identify the feature differences between real videos and fake videos, and have achieved good results on uncompressed videos. But the detection performance on compressed video will be severely reduced. Therefore, this paper proposed a fake face video detection method based on improved triplet loss to tackle the above problem. Firstly, it used an artifact map generated by the artifact map generator to deepen the feature difference between the fake face and the real face. Secondly, it used improved triplet loss to solve the problem of hard samples that were difficult to detect correctly. Finally, it chose a deep learning network that was more suitable for fake face detection to extract convolutional features. This paper has implemented experiments on the FaceForensics++ dataset, and the proposed method is better than other state-of-the-art methods.