Publication: A comparison between skeleton and bounding box models for falling direction recognition
Issued Date
2017-01-01
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ISSN
1996756X
0277786X
0277786X
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2-s2.0-85040449650
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Mahidol University
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SCOPUS
Bibliographic Citation
Proceedings of SPIE - The International Society for Optical Engineering. Vol.10613, (2017)
Suggested Citation
Lalita Narupiyakul, Nitikorn Srisrisawang A comparison between skeleton and bounding box models for falling direction recognition. Proceedings of SPIE - The International Society for Optical Engineering. Vol.10613, (2017). doi:10.1117/12.2300760 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/42378
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Title
A comparison between skeleton and bounding box models for falling direction recognition
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Abstract
© 2017 SPIE. Falling is an injury that can lead to a serious medical condition in every range of the age of people. However, in the case of elderly, the risk of serious injury is much higher. Due to the fact that one way of preventing serious injury is to treat the fallen person as soon as possible, several works attempted to implement different algorithms to recognize the fall. Our work compares the performance of two models based on features extraction: (i) Body joint data (Skeleton Data) which are the joint's positions in 3 axes and (ii) Bounding box (Box-size Data) covering all body joints. Machine learning algorithms that were chosen are Decision Tree (DT), Naïve Bayes (NB), K-nearest neighbors (KNN), Linear discriminant analysis (LDA), Voting Classification (VC), and Gradient boosting (GB). The results illustrate that the models trained with Skeleton data are performed far better than those trained with Box-size data (with an average accuracy of 94-81% and 80-75%, respectively). KNN shows the best performance in both Body joint model and Bounding box model. In conclusion, KNN with Body joint model performs the best among the others.