When training a stereo matching network with a single training dataset, the network may overly rely on the learned features of the single training dataset due to differences in the training dataset scenes, resulting i...When training a stereo matching network with a single training dataset, the network may overly rely on the learned features of the single training dataset due to differences in the training dataset scenes, resulting in poor performance on all datasets. Therefore, feature consistency between matched pixels is a key factor in solving the network’s generalization ability. To address this issue, this paper proposed a more widely applicable stereo matching network that introduced whitening loss into the feature extraction module of stereo matching, and significantly improved the applicability of the network model by constraining the variation between salient feature pixels. In addition, this paper used a GRU iterative update module in the disparity update calculation stage, which expanded the model’s receptive field at multiple resolutions, allowing for precise disparity estimation not only in rich texture areas but also in low texture areas. The model was trained only on the Scene Flow large-scale dataset, and the disparity estimation was conducted on mainstream datasets such as Middlebury, KITTI 2015, and ETH3D. Compared with earlier stereo matching algorithms, this method not only achieves more accurate disparity estimation but also has wider applicability and stronger robustness.展开更多
为解决目前深度仿造检测方法对于跨数据集的检测性能难以提高的问题,提出基于注意力机制和一致性损失相结合的深度伪造人脸检测方法(method based on attention mechanism and consistency loss,MAMCL)。采用多注意力机制,迫使网络捕捉...为解决目前深度仿造检测方法对于跨数据集的检测性能难以提高的问题,提出基于注意力机制和一致性损失相结合的深度伪造人脸检测方法(method based on attention mechanism and consistency loss,MAMCL)。采用多注意力机制,迫使网络捕捉到更细微的局部异常。采用基于注意力机制的擦除方式,鼓励模型深入挖掘之前忽略的区域。设计一致性模块获取伪造图像中普遍存在的不一致细节特征,并应用一致性损失引导模型更加关注伪造细节。在面部取证++(FaceForensics++,FF++)数据集上进行实验,准确率达到96.38%,受试者工作特征曲线(receiver operating characteristic curve,ROC)的曲线下面积达到99.34%,在泛化性能测试中也取得了良好的效果。通过消融实验,证明了每个模块的有效性。结果表明,提出的检测方法能够较为准确地检测深度伪造人脸,且具有良好的泛化性能,可以作为应对当前人脸伪造威胁的有效检测手段。展开更多
文摘When training a stereo matching network with a single training dataset, the network may overly rely on the learned features of the single training dataset due to differences in the training dataset scenes, resulting in poor performance on all datasets. Therefore, feature consistency between matched pixels is a key factor in solving the network’s generalization ability. To address this issue, this paper proposed a more widely applicable stereo matching network that introduced whitening loss into the feature extraction module of stereo matching, and significantly improved the applicability of the network model by constraining the variation between salient feature pixels. In addition, this paper used a GRU iterative update module in the disparity update calculation stage, which expanded the model’s receptive field at multiple resolutions, allowing for precise disparity estimation not only in rich texture areas but also in low texture areas. The model was trained only on the Scene Flow large-scale dataset, and the disparity estimation was conducted on mainstream datasets such as Middlebury, KITTI 2015, and ETH3D. Compared with earlier stereo matching algorithms, this method not only achieves more accurate disparity estimation but also has wider applicability and stronger robustness.
文摘为解决目前深度仿造检测方法对于跨数据集的检测性能难以提高的问题,提出基于注意力机制和一致性损失相结合的深度伪造人脸检测方法(method based on attention mechanism and consistency loss,MAMCL)。采用多注意力机制,迫使网络捕捉到更细微的局部异常。采用基于注意力机制的擦除方式,鼓励模型深入挖掘之前忽略的区域。设计一致性模块获取伪造图像中普遍存在的不一致细节特征,并应用一致性损失引导模型更加关注伪造细节。在面部取证++(FaceForensics++,FF++)数据集上进行实验,准确率达到96.38%,受试者工作特征曲线(receiver operating characteristic curve,ROC)的曲线下面积达到99.34%,在泛化性能测试中也取得了良好的效果。通过消融实验,证明了每个模块的有效性。结果表明,提出的检测方法能够较为准确地检测深度伪造人脸,且具有良好的泛化性能,可以作为应对当前人脸伪造威胁的有效检测手段。
