Systems and methods for ridge selection in scalograms of signals
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United States of America Patent
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Jul 9, 2013
Grant Date -
Jan 10, 2013
app pub date -
Jul 12, 2012
filing date -
Jun 30, 2008
priority date (Note) -
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Abstract
According to embodiments, systems, devices, and methods for ridge selection in scalograms are disclosed. Ridges or ridge components are features within a scalogram which may be computed from a signal such as a physiological (e.g., photoplethysmographic) signal. Ridges may be identified from one or more scalograms of the signal. Parameters characterizing these ridges may be determined. Based at least in part on these parameters, a ridge density distribution function is determined. A ridge is selected from analyzing this ridge density distribution function. In some embodiments, the selected ridge is used to determine a physiological parameter such as respiration rate.
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