BREATHING PATTERN IDENTIFICATION FOR RESPIRATORY FUNCTION ASSESSMENT
First Claim
1. A method for determining that a subject is having an apnea episode, comprising:
- receiving a time-varying sequence of depth maps obtained for a target region of the subject;
continuously analyzing the time-varying sequence of depth maps to determine a time duration of each time period when a change in the time-varying sequence of depth maps is at a minimum; and
determining that the subject is having the apnea episode in response to the time duration being at least a pre-defined length of time.
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Accused Products
Abstract
What is disclosed is a system and method for identifying a patient'"'"'s breathing pattern for respiratory function assessment without contact and with a depth-capable imaging system. In one embodiment, a time-varying sequence of depth maps are received of a target region of a subject of interest over a period of inspiration and expiration. Once received, the depth maps are processed to obtain a breathing signal for the subject. The subject'"'"'s breathing signal comprises a temporal sequence of instantaneous volumes. One or more segments of the subject'"'"'s breathing signal are then compared against one or more reference breathing signals each associated with a known pattern of breathing. As a result of the comparison, a breathing pattern for the subject is identified. The identified breathing pattern is then used to assess the subject'"'"'s respiratory function. The teachings hereof find their uses in an array of diverse medical applications. Various embodiments are disclosed.
40 Citations
20 Claims
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1. A method for determining that a subject is having an apnea episode, comprising:
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receiving a time-varying sequence of depth maps obtained for a target region of the subject; continuously analyzing the time-varying sequence of depth maps to determine a time duration of each time period when a change in the time-varying sequence of depth maps is at a minimum; and determining that the subject is having the apnea episode in response to the time duration being at least a pre-defined length of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for determining that a subject is having an apnea episode, comprising:
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a processor; and a memory storing machine readable program instructions, which when executed by the processor cause the processor to perform operations, the operations comprising; receiving a time-varying sequence of depth maps obtained for a target region of a subject; continuously analyzing the time-varying sequence of depth maps to determine a time duration of each time period when a change in the time-varying sequence of depth maps is at a minimum; and determining that the subject is having the apnea episode in response to the time duration being at least a pre-defined length of time. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification