【摘要】 为解决无监督行人重识别研究中存在的遮挡、域间及相机间风格差异较大等问题,本文提出基于可变形卷积的无监督域自适应模型。针对特征提取过程中的遮挡问题提出基于可变形卷积的CNN模型;在预训练阶段提出应用SPGAN直接减小域间差异,训练过程中提出使用CycleGAN生成不同相机风格图像缓解相机风格差异性问题;提出多损失协同训练的方法实现CycleGAN和复用CNN模型的迭代优化进一步提高识别准确率。实验结果表明,本文提出的方法在源域DukeMTMC-reID/Market-1501和目标域Market-1501/DukeMTMC-reID下进行实验,mAP和Rank-1分别达到了68.7%、64.1%和88.2%、78.1%。本文所提出的模型有效缓解了行人被遮挡、域间及相机间风格差异较大等问题,与现有方法比较,有更好的识别效果。更多还原

【Abstract】 In order to solve the problems of occlusion,large differences in styles between domains and cameras in the research of unsupervised person re-recognition,this paper proposes an unsupervised domain adaptive model based on deformable convolution.Aiming at the occlusion problem in the feature extraction process,a CNN model based on deformable convolution is proposed.In the pretraining stage,it is proposed to apply SPGAN to directly reduce the difference between domains.During the training process,it is proposed to use CycleGAN to generate images of different camera styles to alleviate the problem of camera style differences.A multi-loss collaborative training method is proposed to realize the iterative optimization of CycleGAN and re-used CNN models to further improve the recognition accuracy.The experimental results show that the method proposed in this paper is tested in the source domain DukeMTMC-reID/Market-1501 and the target domain Market-1501/DukeMTMC-reID,and mAP and Rank-1 reach 68.7%,64.1% and 88.2%,78.1%,respectively.The model proposed in this paper effectively alleviates the problems of pedestrians being occluded,and large differences in styles between domains and cameras.Compared with the existing methods,it has a better recognition effect.更多还原