孙北晨,许志猛,陈良琴,等.基于域自适应的Wi-Fi手势识别方案[J]. 微电子学与计算机,2023,40(10):38-47. doi: 10.19304/J.ISSN1000-7180.2022.0766
引用本文: 孙北晨,许志猛,陈良琴,等.基于域自适应的Wi-Fi手势识别方案[J]. 微电子学与计算机,2023,40(10):38-47. doi: 10.19304/J.ISSN1000-7180.2022.0766
SUN B C,XU Z M,CHEN L Q,et al. Wi-Fi gesture recognition scheme based on domain adaptive[J]. Microelectronics & Computer,2023,40(10):38-47. doi: 10.19304/J.ISSN1000-7180.2022.0766
Citation: SUN B C,XU Z M,CHEN L Q,et al. Wi-Fi gesture recognition scheme based on domain adaptive[J]. Microelectronics & Computer,2023,40(10):38-47. doi: 10.19304/J.ISSN1000-7180.2022.0766

基于域自适应的Wi-Fi手势识别方案

Wi-Fi gesture recognition scheme based on domain adaptive

  • 摘要: 基于Wi-Fi的手势识别技术在智慧医疗、智能家居、工业生产、游戏交互等领域中有着广阔的应用前景,然而在实际应用中,一个在原用户(源域)数据集上训练得到的手势识别模型应用于新的用户(目标域)时准确率会显著下降. 为了解决这一问题,提出了一种应用于Wi-Fi的域自适应手势识别方案. 首先,使用一种新的轻量级卷积神经网络对源域数据预训练;然后,设计一种新的域自适应网络进行无监督迁移学习,引入了相关对齐损失将源和目标域深度特征的二阶统计量对齐,并使用中心损失提高特征的可判别性,使类内聚合、类间分散. 实验证明提出的方案用于识别新用户手势动作具有很好的效果. 在用户变化的情况下,所提方案将手势识别平均准确率从62.7%提升至90.2%,可以显著提升用户变化时Wi-Fi手势识别的鲁棒性.

     

    Abstract: Wi-Fi-based gesture recognition technology has broad application prospects in smart medical, smart home, industrial production, game interaction, etc. However, in practical applications, the accuracy of Wi-Fi-based gesture recognition will be significantly reduced when a gesture recognition model trained on a dataset from original users (source domain) has been applied to a new user (target domain). In order to solve this problem, a domain adaptive gesture recognition scheme for Wi-Fi is proposed. First, a new lightweight convolutional neural network is proposed for pre-training the source domain. Then, a new domain adaptive network is designed for unsupervised transfer learning which uses the correlation alignment loss to align the second-order statistics of the source and target domain depth features as well as use center loss to improve the discriminability of features to realize aggregate within classes and scattered between classes. Experiments demonstrate that the scheme proposed in this paper works well for recognizing the hand gesture actions of new users. When the user changed, the scheme proposed in this paper improves the action recognition average accurate rate from 62.7% to 90.2%, which can significantly enhance the robustness of Wi-Fi gesture recognition across users.

     

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