Deformable deep convolutional generative adversarial network in microwave based hand gesture recognition system

This paper focuses on a fundamental question in Wi-Fi-based gesture recognition: "Can we use the knowledge learned from some users to perform gesture recognition for others?". This problem is also known as cross-target recognition. It arises in many practical deployments of Wi-Fi-based gesture recognition where it is prohibitively expensive to collect training data from every single user. We present CrossGR, a low-cost cross-target gesture recognition system. As a departure from existing approaches, CrossGR does not require prior knowledge (such as who is currently performing a gesture) of the target user. Instead, CrossGR employs a deep neural network to extract user-agnostic but gesture-related Wi-Fi signal characteristics to perform gesture recognition. To provide sufficient training data to build an effective deep learning model, CrossGR employs a generative adversarial network to automatically generate many synthetic training data from a small set of real-world examples collected from a small number of users. Such a strategy allows CrossGR to minimize the user involvement and the associated cost in collecting training examples for building an accurate gesture recognition system. We evaluate CrossGR by applying it to perform gesture recognition across 10 users and 15 gestures. Experimental results show that CrossGR achieves an accuracy of over 82.6% (up to 99.75%). We demonstrate that CrossGR delivers comparable recognition accuracy, but uses an order of magnitude less training samples collected from the end-users when compared to state-of-the-art recognition systems.

Download Full-text

A Novel Illumination-Robust Hand Gesture Recognition System With Event-Based Neuromorphic Vision Sensor

IEEE Transactions on Automation Science and Engineering ◽

10.1109/tase.2020.3045880 ◽

2021 ◽

Vol 18 (2) ◽

pp. 508-520

Author(s):

Guang Chen ◽

Zhongcong Xu ◽

Zhijun Li ◽

Huajin Tang ◽

Sanqing Qu ◽

...

Keyword(s):

Gesture Recognition ◽

Recognition System ◽

Hand Gesture Recognition ◽

Hand Gesture ◽

Vision Sensor ◽

Event Based ◽

Neuromorphic Vision

Download Full-text

Surface EMG-Based Instantaneous Hand Gesture Recognition Using Convolutional Neural Network with the Transfer Learning Method

Sensors ◽

10.3390/s21072540 ◽

2021 ◽

Vol 21 (7) ◽

pp. 2540

Author(s):

Zhipeng Yu ◽

Jianghai Zhao ◽

Yucheng Wang ◽

Linglong He ◽

Shaonan Wang

Keyword(s):

Neural Network ◽

Convolutional Neural Network ◽

Transfer Learning ◽

Gesture Recognition ◽

Recognition System ◽

Surface Emg ◽

Hand Gesture Recognition ◽

Hand Gesture ◽

Training Time ◽

Generalization Ability

In recent years, surface electromyography (sEMG)-based human–computer interaction has been developed to improve the quality of life for people. Gesture recognition based on the instantaneous values of sEMG has the advantages of accurate prediction and low latency. However, the low generalization ability of the hand gesture recognition method limits its application to new subjects and new hand gestures, and brings a heavy training burden. For this reason, based on a convolutional neural network, a transfer learning (TL) strategy for instantaneous gesture recognition is proposed to improve the generalization performance of the target network. CapgMyo and NinaPro DB1 are used to evaluate the validity of our proposed strategy. Compared with the non-transfer learning (non-TL) strategy, our proposed strategy improves the average accuracy of new subject and new gesture recognition by 18.7% and 8.74%, respectively, when up to three repeated gestures are employed. The TL strategy reduces the training time by a factor of three. Experiments verify the transferability of spatial features and the validity of the proposed strategy in improving the recognition accuracy of new subjects and new gestures, and reducing the training burden. The proposed TL strategy provides an effective way of improving the generalization ability of the gesture recognition system.

Download Full-text