期刊
出版社
IEEE
DOI: 10.1109/iThings-GreenCom-CPSCom-SmartData.2017.145
关键词
Iot; activity recognition; automatic classification; unconstrained environment
In this paper, we design an experience that evaluates what is the best descriptor to recognize human activity using Convolutional Neural Network (CNN) in a non-controlled environment using a network of smart objects. We chose to classify four types of activities: standing, sitting, laying and walking. We selected a set of the most popular and suitable descriptors and do a comparative study of the classification results using different classifiers. Results show that the discrete cosine transform (DCT), with the convolutional neural network (CNN) as a classifier, achieves more than 98% average accuracy by choosing a certain provision of the network of smart objects on the body. Therefore, the selection of descriptors saves computation time and memory space, reaching high classification accuracy.
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