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科技與工程學院
電機工程學系
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73890
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search.filters.author.洪榮裔
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search.filters.author.Jung-Yi Hung
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search.filters.subject.curve fitting
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search.filters.subject.expert system
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search.filters.subject.high-low ratio of human body
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search.filters.subject.laser range image
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search.filters.subject.人體高低比例
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植基於雷射人體掃描辨識技術之跌倒偵測系統
(
2012
)
洪榮裔
;
Jung-Yi Hung
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近年來,因老人人口比例增加,老人的安養問題漸受各國重視,而研究發現,老人的日常生活中,遭遇到的意外以跌倒居多,而跌倒正是造成老人嚴重傷害的主因之一,因此如何在跌倒事件發生的當下立即發現並處理,便是當前社會的一個重要議題。 本研究提出一種以雷射掃描影像為基礎的人體跌倒偵測系統。整個系統架構分為建置階段、跌倒偵測階段與辨識階段,以震動型加速度計或是近接型光電感測器輔助系統運作。在人體跌倒姿勢的特徵萃取部份則包含了人體區域分割的演算法,及基於人體上緣包絡線的特徵萃取演算法。本文也提出一個效能的分析指標,以探討本系統的運作效能以及可改進之處。 藉由本文提出的研究方法、步驟以及流程,並經由實驗驗證,整體系統的辨識率,在辨識跪趴、撐趴、上躺與下躺等姿勢時,辨識率為79.55%;在辨識趴、坐與躺等三個姿勢時,辨識率為83.03%;在辨識站立的姿勢時,其辨識率可達到100%。
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