基于AdaBoost多核支持向量机的跌倒检测研究
Research on fall detection based on Adaboost multiple kernel support vector machine
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摘要: 针对传统的跌倒检测模型实时性低、误报率高的问题，提出AdaBoost多核支持向量机模型（ADB-MKSVM），用于对跌倒动作进行检测识别.该模型基于改进的AdaBoost模型框架，将多核支持向量机作为基分类器，并集合这些基分类器构成一个更强的最终分类器；依据人体动作数据分布和每次训练集中各样本的分类是否正确，以及上次的总体分类准确率，来确定每个样本的权值，采用权重动态分配的方法提高跌倒动作的识别率.测试结果表明，该模型具有良好的分类性能，且传感器绑于腰部位置可有效提高跌倒动作的检测效果，其准确率为99.33%，跌倒检出率为63.6%，跌倒检测错误率为1.62%.Abstract: Aim at the low real-time performance and high false alarm rate of the traditional fall detection model,AdaBoost multi-core support vector machine model (ADB-MKSVM) was proposed which was used to detect and identify the falling action. Based on the improved AdaBoost model framework, the model took multi-core support vector machine as the basis classifier and assembled these basis classifiers to form a stronger final classifier. According to the distribution of human movement data and whether the classification of each sample in each training set is correct or not, and the overall classification accuracy last time, the weight of each sample was determined. The dynamic weight allocation method was used to improve the recognition rate of the fall action. The test results showed that this model had good classification performance, and the method of binding the sensor on the waist position could effectively improve the detection effect of the fall action.The accuracy rate was 99.33%,the fall detection rate was 63.6%,and the false detection rate was 1.62%.
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Key words:
- AdaBoost /
- multi-kernel learning /
- SVM /
- fall detection
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