Vision Analysis in Detecting Abnormal Breathing Activity in application to Diagnosis of Obs.pdf
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Vision Analysis in Detecting Abnormal Breathing Activity in application to Diagnosis of Obs
Vision Analysis in Detecting Abnormal Breathing Activity
in application to Diagnosis of Obstructive Sleep Apnoea
Ching Wei Wang, Amr Ahmed and Andrew Hunter
Vision and Artificial Intelligence Group, Department of Computing Informatics, University of Lincoln
Brayford Pool, Lincoln LN6 7TS, United Kingdom
{cweiwang | aahmed | ahunter}@lincoln.ac.uk
Abstract –Recognizing abnormal breathing activity from
body movement is a challenging task in machine vision. In this
paper, we present a non-intrusive automatic video monitoring
technique for detecting abnormal breathing activities and
assisting in diagnosis of obstructive sleep apnoea. The proposed
technique utilizes infrared video information and avoids
imposing geometric or positional constraints on the patient. The
technique also deals with fully or partially obscured patients’
body. A continuously updated breathing activity template is built
for distinguishing general body movement from breathing
behavior.
Index Terms – breath monitoring, behavior recognition, vision
analysis, respiration monitoring
I. INTRODUCTION
Obstructive Sleep Apnoea Syndrome is increasingly
recognised as a common and serious condition, leading to
sleep disturbance and consequential daytime sleepiness.
Apnoea refers to short spells when breathing stops. In
obstructive sleep apnoea, the throat constricts during sleep,
preventing breathing; the apnoea episode often ends with a
loud snore and/or gasp. The event is sufficient to open the
throat muscles to allow breathing, and the patient usually falls
asleep again so quickly that the event is not remembered. In
obstructive sleep apnoea, this cycle repeats itself throughout
the night as the muscles relax and the throat blocks again. The
frequency of the episode determines the severity of the
syndrome [12]. Hence, a further investigation on monitoring
human breathing activity is needed for diagnosis of sleep
disorders.
Current breathing monitoring techniques can be
c
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