51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
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#ifndef _FEATURE_EXTRACTOR_H
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#define _FEATURE_EXTRACTOR_H
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#include "headfile.h"
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// ECG特征结构体
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struct ECGFeatures {
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float heart_rate = 0.0f; // 心率 (bpm)
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float qrs_duration = 0.0f; // QRS波群时长 (ms)
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float qt_interval = 0.0f; // QT间期 (ms)
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float qtc_interval = 0.0f; // 校正的QT间期 (ms)
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std::vector<float> st_segment; // ST段偏移值 (mV)
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float p_wave_amplitude = 0.0f; // P波振幅 (mV)
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float t_wave_amplitude = 0.0f; // T波振幅 (mV)
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};
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// PPG特征结构体
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struct PPGFeatures {
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float heart_rate = 0.0f; // 心率 (bpm)
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float perfusion_index = 0.0f; // 灌注指数 (PI)
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float pulse_width = 0.0f; // 脉搏波宽度 (ms)
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float amplitude_ratio = 0.0f; // 红光/红外光振幅比
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float spo2 = 0.0f; // 血氧饱和度 (%)
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};
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// 特征提取器类
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class FeatureExtractor {
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public:
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// ECG特征提取
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static ECGFeatures extract_ecg_features(const std::vector<float>& ecg_signal,
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double sample_rate,
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int lead_index = -1);
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// PPG特征提取
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static PPGFeatures extract_ppg_features(const std::vector<float>& red_signal,
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const std::vector<float>& ir_signal,
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double sample_rate);
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// 心率变异性(HRV)分析
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static std::vector<float> analyze_hrv(const std::vector<float>& rr_intervals,
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double sample_rate);
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private:
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// QRS波群检测
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static std::vector<int> detect_qrs(const std::vector<float>& ecg_signal,
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double sample_rate);
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// PPG峰值检测
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static std::vector<int> detect_ppg_peaks(const std::vector<float>& ppg_signal,
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double sample_rate);
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};
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#endif
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