scholarly journals MHARS: Sistema Móvel de Reconhecimento de Atividades em Ambient Assisted Living

2015 ◽  
Author(s):  
J.D.P. Ribeiro Filho ◽  
F.J. Da Silva e Silva ◽  
L.R. Coutinho ◽  
B. Gomes

O objetivo deste artigo é apresentar o MHARS (Mobile Human Activity Recognition System), um sistema móvel voltado para o acompanhamento de pacientes no contexto de Ambient Assisted Living (AAL), que permite o reconhecimento das atividades realizadas pelo usuário bem como a detecção da sua intensidade me tempo real. O MHARS foi projetado para poder obter dados de difererentes sensores, reconecer as atividades e medir sua intensidade em diferentes níveis de mobilidade do usuário, possui mecanismos para a inferência de situações relativas ao estado de saúde do paciente, bem como suporte à execução de ações de forma a poder reagir a eventos que mereçam a atenção por parte de seus cuidadores. Experimentos realizados demonstram que o MHARS possui boa acurácia e apresenta um consumo adequado de recursos do dispositivo móvel.

The rise in life expectancy rate and dwindled birth rate in new age society has led to the phenomenon of population ageing which is being witnessed across the world from past few decades. India is also a part of this demographic transition which will have the direct impact on the societal and economic conditions of the country. In order to effectively deal with the prevailing phenomenon, stakeholders involved are coming up with the Information and Communication Technology (ICT) based ecosystem to address the needs of elderly people such as independent living, activity recognition, vital health sign monitoring, prevention from social isolation etc. Ambient Assisted Living (AAL) is one such ecosystem which is capable of providing safe and secured living environment for the elderly and disabled people. In this paper we will focus on reviewing the sensor based Human Activity Recognition (HAR) and Vital Health Sign Monitoring (VHSM) which is applicable for AAL environments. At first we generally describe the AAL environment. Next we present brief insights into sensor modalities and different deep learning architectures. Later, we survey the existing literature for HAR and VHSM based on sensor modality and deep learning approach used.


Author(s):  
José Daniel Pereira Ribeiro Filho ◽  
Francisco José Da Silva e Silva ◽  
Luciano Reis Coutinho ◽  
Berto De Tácio Pereira Gomes

2016 ◽  
Vol 2016 ◽  
pp. 1-14 ◽  
Author(s):  
Enea Cippitelli ◽  
Samuele Gasparrini ◽  
Ennio Gambi ◽  
Susanna Spinsante

The aim of Active and Assisted Living is to develop tools to promote the ageing in place of elderly people, and human activity recognition algorithms can help to monitor aged people in home environments. Different types of sensors can be used to address this task and the RGBD sensors, especially the ones used for gaming, are cost-effective and provide much information about the environment. This work aims to propose an activity recognition algorithm exploiting skeleton data extracted by RGBD sensors. The system is based on the extraction of key poses to compose a feature vector, and a multiclass Support Vector Machine to perform classification. Computation and association of key poses are carried out using a clustering algorithm, without the need of a learning algorithm. The proposed approach is evaluated on five publicly available datasets for activity recognition, showing promising results especially when applied for the recognition of AAL related actions. Finally, the current applicability of this solution in AAL scenarios and the future improvements needed are discussed.


2016 ◽  
Vol 2016 ◽  
pp. 1-17 ◽  
Author(s):  
Robertas Damaševičius ◽  
Mindaugas Vasiljevas ◽  
Justas Šalkevičius ◽  
Marcin Woźniak

Automatic human activity recognition systems aim to capture the state of the user and its environment by exploiting heterogeneous sensors attached to the subject’s body and permit continuous monitoring of numerous physiological signals reflecting the state of human actions. Successful identification of human activities can be immensely useful in healthcare applications for Ambient Assisted Living (AAL), for automatic and intelligent activity monitoring systems developed for elderly and disabled people. In this paper, we propose the method for activity recognition and subject identification based on random projections from high-dimensional feature space to low-dimensional projection space, where the classes are separated using the Jaccard distance between probability density functions of projected data. Two HAR domain tasks are considered: activity identification and subject identification. The experimental results using the proposed method with Human Activity Dataset (HAD) data are presented.


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