Posture recognition plays an important role in many applications,such as security system and monitoring system.Joint quaternion combined with support vector machine(SVM) can solve the problem of moving human posture r...Posture recognition plays an important role in many applications,such as security system and monitoring system.Joint quaternion combined with support vector machine(SVM) can solve the problem of moving human posture recognition.It is a simple and effective algorithm that only three joints are used as the feature points in the whole human skeleton.Using the quaternion of the three joints,a feature vector with five parameters in gait cycle is extracted.The efficiency of the proposed method is demonstrated through an experimental study,and walking and running postures can be distinguished accurately.展开更多
基于交叉偶极子构成的锥面共形阵列,建立了四元数表示的锥面共形阵列模型并提出了四元数多重信号分类(multiple signal classification,MUSIC)算法。算法通过同极化子阵的构造以及秩损原理实现了导向矢量中极化信息和波达方向(direction...基于交叉偶极子构成的锥面共形阵列,建立了四元数表示的锥面共形阵列模型并提出了四元数多重信号分类(multiple signal classification,MUSIC)算法。算法通过同极化子阵的构造以及秩损原理实现了导向矢量中极化信息和波达方向(direction of arrival,DOA)信息的剥离,进而得到入射信号的二维DOA估计和极化参数估计,有效降低了极化-DOA联合估计的计算量。仿真结果验证了算法的有效性。展开更多
基金the Key Project of the National Natural Science Foundation of China(No.61134009)National Natural Science Foundations of China(Nos.61473077,61473078,61503075)+6 种基金Cooperative Research Funds of the National Natural Science Funds Overseas and Hong Kong and Macao Scholars,China(No.61428302)Program for Changjiang Scholars from the Ministry of Education,ChinaSpecialized Research Fund for Shanghai Leading Talents,ChinaProject of the Shanghai Committee of Science and Technology,China(No.13JC1407500)Innovation Program of Shanghai Municipal Education Commission,China(No.14ZZ067)Shanghai Pujiang Program,China(No.15PJ1400100)the Fundamental Research Funds for the Central Universities,China(Nos.15D110423,2232015D3-32)
文摘Posture recognition plays an important role in many applications,such as security system and monitoring system.Joint quaternion combined with support vector machine(SVM) can solve the problem of moving human posture recognition.It is a simple and effective algorithm that only three joints are used as the feature points in the whole human skeleton.Using the quaternion of the three joints,a feature vector with five parameters in gait cycle is extracted.The efficiency of the proposed method is demonstrated through an experimental study,and walking and running postures can be distinguished accurately.
文摘基于交叉偶极子构成的锥面共形阵列,建立了四元数表示的锥面共形阵列模型并提出了四元数多重信号分类(multiple signal classification,MUSIC)算法。算法通过同极化子阵的构造以及秩损原理实现了导向矢量中极化信息和波达方向(direction of arrival,DOA)信息的剥离,进而得到入射信号的二维DOA估计和极化参数估计,有效降低了极化-DOA联合估计的计算量。仿真结果验证了算法的有效性。
