Emotion recognition using Kinect motion capture data of human gaits

PeerJ

article

Shun Li¹  Liqing Cui¹  Changye Zhu³  Baobin Li³  Nan Zhao¹  Tingshao Zhu¹ 

[1] Institute of Psychology, Chinese Academy of Sciences;The 6th Research Institute of China Electronics Corporation;School of Computer and Control, University of Chinese Academy of Sciences

关键词: Emotion recognition;    Affective computing;    Gait;    Machine learning;    Kinect;   

DOI  :  10.7717/peerj.2364

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Automatic emotion recognition is of great value in many applications, however, to fully display the application value of emotion recognition, more portable, non-intrusive, inexpensive technologies need to be developed. Human gaits could reflect the walker’s emotional state, and could be an information source for emotion recognition. This paper proposed a novel method to recognize emotional state through human gaits by using Microsoft Kinect, a low-cost, portable, camera-based sensor. Fifty-nine participants’ gaits under neutral state, induced anger and induced happiness were recorded by two Kinect cameras, and the original data were processed through joint selection, coordinate system transformation, sliding window gauss filtering, differential operation, and data segmentation. Features of gait patterns were extracted from 3-dimentional coordinates of 14 main body joints by Fourier transformation and Principal Component Analysis (PCA). The classifiers NaiveBayes, RandomForests, LibSVM and SMO (Sequential Minimal Optimization) were trained and evaluated, and the accuracy of recognizing anger and happiness from neutral state achieved 80.5% and 75.4%. Although the results of distinguishing angry and happiness states were not ideal in current study, it showed the feasibility of automatically recognizing emotional states from gaits, with the characteristics meeting the application requirements.

【 授权许可】

CC BY