615 lines
25 KiB
Python
615 lines
25 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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检测引擎模块
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负责实时数据处理、姿态分析和平衡评估
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"""
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import numpy as np
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import cv2
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from datetime import datetime, timedelta
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from typing import Dict, List, Optional, Any, Tuple
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import logging
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import threading
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from collections import deque
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import json
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logger = logging.getLogger(__name__)
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class DetectionEngine:
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"""检测引擎"""
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def __init__(self):
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self.session_data = {} # 存储各会话的数据
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self.data_lock = threading.Lock()
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self.analysis_algorithms = {
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'balance_analysis': BalanceAnalyzer(),
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'posture_analysis': PostureAnalyzer(),
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'movement_analysis': MovementAnalyzer()
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}
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logger.info('检测引擎初始化完成')
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def start_session(self, session_id: str, settings: Dict[str, Any]):
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"""开始检测会话"""
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with self.data_lock:
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self.session_data[session_id] = {
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'settings': settings,
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'start_time': datetime.now(),
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'data_buffer': deque(maxlen=1000), # 保留最近1000个数据点
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'analysis_results': {},
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'real_time_metrics': {}
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}
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logger.info(f'检测会话开始: {session_id}')
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def process_data(self, session_id: str, raw_data: Dict[str, Any]) -> Dict[str, Any]:
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"""处理实时数据"""
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if session_id not in self.session_data:
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logger.warning(f'会话不存在: {session_id}')
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return {}
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try:
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# 数据预处理
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processed_data = self._preprocess_data(raw_data)
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# 存储数据
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with self.data_lock:
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self.session_data[session_id]['data_buffer'].append(processed_data)
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# 实时分析
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real_time_results = self._real_time_analysis(session_id, processed_data)
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# 更新实时指标
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with self.data_lock:
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self.session_data[session_id]['real_time_metrics'].update(real_time_results)
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return real_time_results
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except Exception as e:
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logger.error(f'数据处理失败: {e}')
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return {}
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def _preprocess_data(self, raw_data: Dict[str, Any]) -> Dict[str, Any]:
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"""数据预处理"""
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processed = {
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'timestamp': raw_data.get('timestamp', datetime.now().isoformat())
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}
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# 处理摄像头数据
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if 'camera' in raw_data:
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camera_data = raw_data['camera']
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if 'pose_data' in camera_data:
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processed['pose'] = self._process_pose_data(camera_data['pose_data'])
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# 处理IMU数据
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if 'imu' in raw_data:
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processed['imu'] = self._process_imu_data(raw_data['imu'])
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# 处理压力数据
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if 'pressure' in raw_data:
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processed['pressure'] = self._process_pressure_data(raw_data['pressure'])
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return processed
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def _process_pose_data(self, pose_data: Dict[str, Any]) -> Dict[str, Any]:
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"""处理姿态数据"""
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return {
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'center_of_gravity': pose_data.get('center_of_gravity', {'x': 0, 'y': 0}),
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'body_angle': pose_data.get('body_angle', {'pitch': 0, 'roll': 0, 'yaw': 0}),
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'confidence': pose_data.get('confidence', 0.0)
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}
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def _process_imu_data(self, imu_data: Dict[str, Any]) -> Dict[str, Any]:
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"""处理IMU数据"""
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# 计算合成加速度
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accel = imu_data.get('accel', {'x': 0, 'y': 0, 'z': 0})
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total_accel = np.sqrt(accel['x']**2 + accel['y']**2 + accel['z']**2)
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# 计算倾斜角度
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pitch = np.arctan2(accel['y'], np.sqrt(accel['x']**2 + accel['z']**2)) * 180 / np.pi
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roll = np.arctan2(-accel['x'], accel['z']) * 180 / np.pi
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return {
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'accel': accel,
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'gyro': imu_data.get('gyro', {'x': 0, 'y': 0, 'z': 0}),
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'total_accel': total_accel,
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'pitch': pitch,
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'roll': roll,
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'temperature': imu_data.get('temperature', 0)
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}
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def _process_pressure_data(self, pressure_data: Dict[str, Any]) -> Dict[str, Any]:
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"""处理压力数据"""
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left_foot = pressure_data.get('left_foot', 0)
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right_foot = pressure_data.get('right_foot', 0)
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total_pressure = left_foot + right_foot
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# 计算压力分布比例
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if total_pressure > 0:
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left_ratio = left_foot / total_pressure
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right_ratio = right_foot / total_pressure
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balance_index = abs(left_ratio - right_ratio) # 平衡指数，越小越平衡
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else:
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left_ratio = right_ratio = 0.5
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balance_index = 0
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return {
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'left_foot': left_foot,
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'right_foot': right_foot,
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'total_pressure': total_pressure,
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'left_ratio': left_ratio,
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'right_ratio': right_ratio,
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'balance_index': balance_index,
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'center_of_pressure': pressure_data.get('center_of_pressure', {'x': 0, 'y': 0})
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}
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def _real_time_analysis(self, session_id: str, data: Dict[str, Any]) -> Dict[str, Any]:
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"""实时分析"""
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results = {}
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try:
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# 获取历史数据用于趋势分析
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with self.data_lock:
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data_buffer = list(self.session_data[session_id]['data_buffer'])
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if len(data_buffer) < 2:
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return results
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# 平衡分析
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if 'pressure' in data:
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balance_result = self.analysis_algorithms['balance_analysis'].analyze_real_time(
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data['pressure'], data_buffer
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)
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results['balance'] = balance_result
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# 姿态分析
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if 'pose' in data or 'imu' in data:
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posture_result = self.analysis_algorithms['posture_analysis'].analyze_real_time(
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data, data_buffer
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)
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results['posture'] = posture_result
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# 运动分析
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movement_result = self.analysis_algorithms['movement_analysis'].analyze_real_time(
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data, data_buffer
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)
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results['movement'] = movement_result
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except Exception as e:
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logger.error(f'实时分析失败: {e}')
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return results
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def get_latest_data(self, session_id: str) -> Dict[str, Any]:
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"""获取最新数据"""
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if session_id not in self.session_data:
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return {}
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with self.data_lock:
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session = self.session_data[session_id]
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if not session['data_buffer']:
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return {}
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latest_data = session['data_buffer'][-1]
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real_time_metrics = session['real_time_metrics'].copy()
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return {
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'latest_data': latest_data,
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'real_time_metrics': real_time_metrics,
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'data_count': len(session['data_buffer'])
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}
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def analyze_session(self, session_id: str) -> Dict[str, Any]:
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"""分析整个会话数据"""
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if session_id not in self.session_data:
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logger.warning(f'会话不存在: {session_id}')
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return {}
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try:
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with self.data_lock:
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session = self.session_data[session_id]
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data_buffer = list(session['data_buffer'])
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settings = session['settings']
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if not data_buffer:
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return {'error': '没有数据可分析'}
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analysis_results = {}
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# 全面平衡分析
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balance_analysis = self.analysis_algorithms['balance_analysis'].analyze_full_session(
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data_buffer, settings
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)
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analysis_results['balance'] = balance_analysis
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# 全面姿态分析
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posture_analysis = self.analysis_algorithms['posture_analysis'].analyze_full_session(
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data_buffer, settings
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)
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analysis_results['posture'] = posture_analysis
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# 全面运动分析
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movement_analysis = self.analysis_algorithms['movement_analysis'].analyze_full_session(
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data_buffer, settings
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)
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analysis_results['movement'] = movement_analysis
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# 综合评估
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overall_assessment = self._generate_overall_assessment(analysis_results)
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analysis_results['overall'] = overall_assessment
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# 保存分析结果
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with self.data_lock:
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self.session_data[session_id]['analysis_results'] = analysis_results
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logger.info(f'会话分析完成: {session_id}')
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return analysis_results
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except Exception as e:
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logger.error(f'会话分析失败: {e}')
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return {'error': str(e)}
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def _generate_overall_assessment(self, analysis_results: Dict[str, Any]) -> Dict[str, Any]:
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"""生成综合评估"""
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try:
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# 提取各项评分
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balance_score = analysis_results.get('balance', {}).get('score', 0)
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posture_score = analysis_results.get('posture', {}).get('score', 0)
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movement_score = analysis_results.get('movement', {}).get('score', 0)
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# 计算综合评分（加权平均）
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weights = {'balance': 0.4, 'posture': 0.3, 'movement': 0.3}
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overall_score = (
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balance_score * weights['balance'] +
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posture_score * weights['posture'] +
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movement_score * weights['movement']
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)
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# 评估等级
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if overall_score >= 90:
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grade = 'A'
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description = '优秀'
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elif overall_score >= 80:
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grade = 'B'
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description = '良好'
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elif overall_score >= 70:
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grade = 'C'
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description = '一般'
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elif overall_score >= 60:
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grade = 'D'
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description = '较差'
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else:
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grade = 'E'
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description = '差'
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# 生成建议
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recommendations = self._generate_recommendations(analysis_results)
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return {
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'score': round(overall_score, 1),
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'grade': grade,
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'description': description,
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'recommendations': recommendations,
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'component_scores': {
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'balance': balance_score,
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'posture': posture_score,
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'movement': movement_score
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}
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}
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except Exception as e:
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logger.error(f'综合评估生成失败: {e}')
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return {'score': 0, 'grade': 'E', 'description': '评估失败'}
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def _generate_recommendations(self, analysis_results: Dict[str, Any]) -> List[str]:
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"""生成改善建议"""
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recommendations = []
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try:
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# 平衡相关建议
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balance_data = analysis_results.get('balance', {})
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if balance_data.get('score', 0) < 80:
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if balance_data.get('left_right_imbalance', 0) > 0.2:
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recommendations.append('注意左右脚压力分布，建议进行单脚站立练习')
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if balance_data.get('stability_index', 0) > 0.5:
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recommendations.append('重心摆动较大，建议进行静态平衡训练')
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# 姿态相关建议
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posture_data = analysis_results.get('posture', {})
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if posture_data.get('score', 0) < 80:
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if abs(posture_data.get('avg_pitch', 0)) > 5:
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recommendations.append('身体前后倾斜较明显，注意保持直立姿态')
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if abs(posture_data.get('avg_roll', 0)) > 5:
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recommendations.append('身体左右倾斜较明显，注意身体对称性')
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# 运动相关建议
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movement_data = analysis_results.get('movement', {})
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if movement_data.get('score', 0) < 80:
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if movement_data.get('movement_variability', 0) > 0.8:
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recommendations.append('身体摆动过大，建议进行核心稳定性训练')
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if movement_data.get('movement_frequency', 0) > 2:
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recommendations.append('身体摆动频率较高，建议放松并专注于静态平衡')
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# 通用建议
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if not recommendations:
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recommendations.append('整体表现良好，继续保持规律的平衡训练')
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except Exception as e:
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logger.error(f'建议生成失败: {e}')
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recommendations = ['建议咨询专业医师进行详细评估']
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return recommendations
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def end_session(self, session_id: str):
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"""结束检测会话"""
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if session_id in self.session_data:
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with self.data_lock:
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del self.session_data[session_id]
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logger.info(f'检测会话结束: {session_id}')
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class BalanceAnalyzer:
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"""平衡分析器"""
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def analyze_real_time(self, pressure_data: Dict[str, Any], data_buffer: List[Dict]) -> Dict[str, Any]:
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"""实时平衡分析"""
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try:
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balance_index = pressure_data.get('balance_index', 0)
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cop = pressure_data.get('center_of_pressure', {'x': 0, 'y': 0})
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# 计算最近10个数据点的平衡稳定性
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recent_data = data_buffer[-10:] if len(data_buffer) >= 10 else data_buffer
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if recent_data and all('pressure' in d for d in recent_data):
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balance_indices = [d['pressure'].get('balance_index', 0) for d in recent_data]
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stability = 1.0 - np.std(balance_indices) # 标准差越小，稳定性越高
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else:
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stability = 0.5
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return {
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'balance_index': balance_index,
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'stability': max(0, min(1, stability)),
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'center_of_pressure': cop,
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'status': 'stable' if balance_index < 0.2 else 'unstable'
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}
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except Exception as e:
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logger.error(f'实时平衡分析失败: {e}')
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return {'balance_index': 0, 'stability': 0, 'status': 'unknown'}
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def analyze_full_session(self, data_buffer: List[Dict], settings: Dict) -> Dict[str, Any]:
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"""全会话平衡分析"""
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try:
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pressure_data = [d['pressure'] for d in data_buffer if 'pressure' in d]
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if not pressure_data:
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return {'score': 0, 'error': '没有压力数据'}
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# 提取关键指标
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balance_indices = [d.get('balance_index', 0) for d in pressure_data]
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left_ratios = [d.get('left_ratio', 0.5) for d in pressure_data]
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right_ratios = [d.get('right_ratio', 0.5) for d in pressure_data]
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# 计算统计指标
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avg_balance_index = np.mean(balance_indices)
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std_balance_index = np.std(balance_indices)
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max_balance_index = np.max(balance_indices)
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# 左右脚不平衡程度
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left_right_imbalance = abs(np.mean(left_ratios) - np.mean(right_ratios))
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# 稳定性指数（基于标准差）
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stability_index = std_balance_index
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# 计算评分（0-100分）
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balance_score = max(0, 100 - avg_balance_index * 200) # 平衡指数越小分数越高
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stability_score = max(0, 100 - stability_index * 500) # 稳定性越高分数越高
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symmetry_score = max(0, 100 - left_right_imbalance * 200) # 对称性越好分数越高
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overall_score = (balance_score + stability_score + symmetry_score) / 3
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return {
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'score': round(overall_score, 1),
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'avg_balance_index': round(avg_balance_index, 3),
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'stability_index': round(stability_index, 3),
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'left_right_imbalance': round(left_right_imbalance, 3),
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'max_imbalance': round(max_balance_index, 3),
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'data_points': len(pressure_data),
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'component_scores': {
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'balance': round(balance_score, 1),
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'stability': round(stability_score, 1),
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'symmetry': round(symmetry_score, 1)
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}
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}
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except Exception as e:
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logger.error(f'全会话平衡分析失败: {e}')
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return {'score': 0, 'error': str(e)}
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class PostureAnalyzer:
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"""姿态分析器"""
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def analyze_real_time(self, data: Dict[str, Any], data_buffer: List[Dict]) -> Dict[str, Any]:
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"""实时姿态分析"""
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try:
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result = {}
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# 分析IMU数据
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if 'imu' in data:
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imu_data = data['imu']
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result['pitch'] = imu_data.get('pitch', 0)
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result['roll'] = imu_data.get('roll', 0)
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result['total_accel'] = imu_data.get('total_accel', 0)
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# 分析姿态数据
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if 'pose' in data:
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pose_data = data['pose']
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result['body_angle'] = pose_data.get('body_angle', {})
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result['confidence'] = pose_data.get('confidence', 0)
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# 计算姿态稳定性
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recent_data = data_buffer[-5:] if len(data_buffer) >= 5 else data_buffer
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if recent_data:
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if 'imu' in data:
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pitches = [d.get('imu', {}).get('pitch', 0) for d in recent_data if 'imu' in d]
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rolls = [d.get('imu', {}).get('roll', 0) for d in recent_data if 'imu' in d]
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if pitches and rolls:
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pitch_stability = 1.0 - min(1.0, np.std(pitches) / 10)
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roll_stability = 1.0 - min(1.0, np.std(rolls) / 10)
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result['stability'] = (pitch_stability + roll_stability) / 2
|
||
|
||
return result
|
||
|
||
except Exception as e:
|
||
logger.error(f'实时姿态分析失败: {e}')
|
||
return {}
|
||
|
||
def analyze_full_session(self, data_buffer: List[Dict], settings: Dict) -> Dict[str, Any]:
|
||
"""全会话姿态分析"""
|
||
try:
|
||
imu_data = [d['imu'] for d in data_buffer if 'imu' in d]
|
||
if not imu_data:
|
||
return {'score': 0, 'error': '没有IMU数据'}
|
||
|
||
# 提取角度数据
|
||
pitches = [d.get('pitch', 0) for d in imu_data]
|
||
rolls = [d.get('roll', 0) for d in imu_data]
|
||
|
||
# 计算统计指标
|
||
avg_pitch = np.mean(pitches)
|
||
avg_roll = np.mean(rolls)
|
||
std_pitch = np.std(pitches)
|
||
std_roll = np.std(rolls)
|
||
max_pitch = np.max(np.abs(pitches))
|
||
max_roll = np.max(np.abs(rolls))
|
||
|
||
# 计算评分
|
||
pitch_score = max(0, 100 - abs(avg_pitch) * 5) # 平均倾斜角度越小分数越高
|
||
roll_score = max(0, 100 - abs(avg_roll) * 5)
|
||
stability_score = max(0, 100 - (std_pitch + std_roll) * 10) # 稳定性越高分数越高
|
||
|
||
overall_score = (pitch_score + roll_score + stability_score) / 3
|
||
|
||
return {
|
||
'score': round(overall_score, 1),
|
||
'avg_pitch': round(avg_pitch, 2),
|
||
'avg_roll': round(avg_roll, 2),
|
||
'std_pitch': round(std_pitch, 2),
|
||
'std_roll': round(std_roll, 2),
|
||
'max_pitch': round(max_pitch, 2),
|
||
'max_roll': round(max_roll, 2),
|
||
'data_points': len(imu_data),
|
||
'component_scores': {
|
||
'pitch': round(pitch_score, 1),
|
||
'roll': round(roll_score, 1),
|
||
'stability': round(stability_score, 1)
|
||
}
|
||
}
|
||
|
||
except Exception as e:
|
||
logger.error(f'全会话姿态分析失败: {e}')
|
||
return {'score': 0, 'error': str(e)}
|
||
|
||
|
||
class MovementAnalyzer:
|
||
"""运动分析器"""
|
||
|
||
def analyze_real_time(self, data: Dict[str, Any], data_buffer: List[Dict]) -> Dict[str, Any]:
|
||
"""实时运动分析"""
|
||
try:
|
||
if len(data_buffer) < 5:
|
||
return {'movement_detected': False}
|
||
|
||
# 分析最近的运动模式
|
||
recent_data = data_buffer[-10:]
|
||
|
||
# 计算重心位置变化
|
||
if 'pressure' in data:
|
||
cop_positions = []
|
||
for d in recent_data:
|
||
if 'pressure' in d:
|
||
cop = d['pressure'].get('center_of_pressure', {'x': 0, 'y': 0})
|
||
cop_positions.append((cop['x'], cop['y']))
|
||
|
||
if len(cop_positions) >= 2:
|
||
# 计算运动幅度
|
||
x_positions = [pos[0] for pos in cop_positions]
|
||
y_positions = [pos[1] for pos in cop_positions]
|
||
movement_range_x = np.max(x_positions) - np.min(x_positions)
|
||
movement_range_y = np.max(y_positions) - np.min(y_positions)
|
||
|
||
return {
|
||
'movement_detected': movement_range_x > 5 or movement_range_y > 5,
|
||
'movement_range_x': movement_range_x,
|
||
'movement_range_y': movement_range_y,
|
||
'total_movement': np.sqrt(movement_range_x**2 + movement_range_y**2)
|
||
}
|
||
|
||
return {'movement_detected': False}
|
||
|
||
except Exception as e:
|
||
logger.error(f'实时运动分析失败: {e}')
|
||
return {'movement_detected': False}
|
||
|
||
def analyze_full_session(self, data_buffer: List[Dict], settings: Dict) -> Dict[str, Any]:
|
||
"""全会话运动分析"""
|
||
try:
|
||
# 提取压力中心数据
|
||
cop_data = []
|
||
for d in data_buffer:
|
||
if 'pressure' in d:
|
||
cop = d['pressure'].get('center_of_pressure', {'x': 0, 'y': 0})
|
||
cop_data.append((cop['x'], cop['y']))
|
||
|
||
if len(cop_data) < 10:
|
||
return {'score': 0, 'error': '数据不足'}
|
||
|
||
# 计算运动指标
|
||
x_positions = [pos[0] for pos in cop_data]
|
||
y_positions = [pos[1] for pos in cop_data]
|
||
|
||
# 运动范围
|
||
movement_range_x = np.max(x_positions) - np.min(x_positions)
|
||
movement_range_y = np.max(y_positions) - np.min(y_positions)
|
||
total_range = np.sqrt(movement_range_x**2 + movement_range_y**2)
|
||
|
||
# 运动变异性
|
||
movement_variability = np.std(x_positions) + np.std(y_positions)
|
||
|
||
# 运动路径长度
|
||
path_length = 0
|
||
for i in range(1, len(cop_data)):
|
||
dx = cop_data[i][0] - cop_data[i-1][0]
|
||
dy = cop_data[i][1] - cop_data[i-1][1]
|
||
path_length += np.sqrt(dx**2 + dy**2)
|
||
|
||
# 运动频率分析（简化）
|
||
movement_frequency = path_length / len(cop_data) if len(cop_data) > 0 else 0
|
||
|
||
# 计算评分（运动幅度适中得分高）
|
||
range_score = max(0, 100 - total_range * 2) # 运动范围适中
|
||
variability_score = max(0, 100 - movement_variability * 10) # 变异性小
|
||
frequency_score = max(0, 100 - movement_frequency * 20) # 频率适中
|
||
|
||
overall_score = (range_score + variability_score + frequency_score) / 3
|
||
|
||
return {
|
||
'score': round(overall_score, 1),
|
||
'movement_range_x': round(movement_range_x, 2),
|
||
'movement_range_y': round(movement_range_y, 2),
|
||
'total_range': round(total_range, 2),
|
||
'movement_variability': round(movement_variability, 2),
|
||
'path_length': round(path_length, 2),
|
||
'movement_frequency': round(movement_frequency, 2),
|
||
'data_points': len(cop_data),
|
||
'component_scores': {
|
||
'range': round(range_score, 1),
|
||
'variability': round(variability_score, 1),
|
||
'frequency': round(frequency_score, 1)
|
||
}
|
||
}
|
||
|
||
except Exception as e:
|
||
logger.error(f'全会话运动分析失败: {e}')
|
||
return {'score': 0, 'error': str(e)} |