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Method and apparatus for detecting feature points using distribution of feature points in second derivative of photoplethysmogram waveform
Method and apparatus for detecting feature points using distribution of feature points in second derivative of photoplethysmogram waveform
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机译：利用光体积描记图波形的二阶导数中的特征点分布检测特征点的方法和装置
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摘要
PURPOSE: The detection of characteristic point method using the distinguishing spot distribution of the second order differential pulse wave and apparatus thereof. CONSTITUTION: It measures the oxygen saturation of the human body and the measuring of volume plethysmography part obtains plethysmogram(47). The measuring of volume plethysmography part comprises the plethysmogram sensor, amplifier, and the filter section. It differential-processes plethysmogram the second and the second order differential processing unit obtains the second order differential pulse wave.
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