现代电子技术2017，Vol.40Issue(14)：10-14,5.DOI:10.16652/j.issn.1004-373x.2017.14.003
空间垂直方向位移在行为识别中的应用
Application of displacement of gravitational orientation in activity recognition
摘要
Abstract
In order to improve the recognition accuracy of ascending stair and descending stair activities,a method that uses the displacement of gravitational orientation to recognize ascending stairs and descending stairs is proposed in this paper.The acceleration data acquired from mobile phone is transformed into the acceleration data of azimuth coordination,and the displacement of gravitational orientation is achieved by means of acceleration component in gravitational orientation of azimuth coordination.The displacement is used as one of the gravitational orientation characteristic values.The characteristic values in horizontal direction,resultant acceleration and gravitational orientation are taken as the input of classifier.The experimental results show that the recognition accuracy of ascending stair and descending stair activities improves 10％ no matter where mobile phone is put.Therefore,this method can effectively improve the accuracy of activity recognition.关键词
行为识别/坐标转换/垂直方向位移/数据转换Key words
activity recognition/coordinate transformation/gravitational orientation displacement/data conversion分类
信息技术与安全科学引用本文复制引用
王忠民,郭强,王文浪..空间垂直方向位移在行为识别中的应用[J].现代电子技术,2017,40(14):10-14,5.基金项目
国家自然科学基金资助项目(61373116) （61373116）
陕西省教育科学“十二五”规划课题(SGH140601) （SGH140601）
西安邮电大学校青年基金项目(ZL2014-27) （ZL2014-27）
