1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122
| """ 安全带误用检测系统 """ import numpy as np from typing import Tuple, List
class SeatbeltMisuseDetector: """安全带误用检测器""" def __init__(self): self.correct_path = { 'anchor_point': (0.5, 0.1), 'shoulder_cross': (0.5, 0.4), 'waist_cross': (0.5, 0.7), 'buckle': (0.5, 0.9) } def detect_seatbelt(self, image: np.ndarray) -> dict: """ 检测安全带位置和路径 Args: image: 输入图像 (H, W, C) Returns: result: 检测结果 """ belt_segments = self._detect_belt_segments(image) occupant_landmarks = self._detect_occupant_landmarks(image) is_correct, misuse_type = self._validate_belt_path( belt_segments, occupant_landmarks ) return { 'is_correct': is_correct, 'misuse_type': misuse_type, 'belt_segments': belt_segments, 'confidence': self._calculate_confidence(belt_segments) } def _detect_belt_segments(self, image: np.ndarray) -> List[Tuple]: """检测安全带线段""" return [ ((100, 50), (150, 200)), ((150, 200), (120, 400)) ] def _detect_occupant_landmarks(self, image: np.ndarray) -> dict: """检测乘员关键点""" return { 'left_shoulder': (100, 80), 'right_shoulder': (200, 80), 'neck': (150, 60), 'waist_left': (120, 350), 'waist_right': (180, 350) } def _validate_belt_path(self, belt_segments: List, landmarks: dict) -> Tuple[bool, str]: """ 验证安全带路径是否正确 Returns: is_correct: 是否正确佩戴 misuse_type: 误用类型 """ if len(belt_segments) < 2: return False, 'not_fastened' shoulder_seg = belt_segments[0] waist_seg = belt_segments[1] if self._is_behind_back(shoulder_seg, landmarks): return False, 'behind_back' if self._is_under_arm(shoulder_seg, landmarks): return False, 'under_arm' if self._is_too_loose(shoulder_seg, landmarks): return False, 'too_loose' return True, 'correct' def _is_behind_back(self, segment: Tuple, landmarks: dict) -> bool: """检查是否在背后系带""" return False def _is_under_arm(self, segment: Tuple, landmarks: dict) -> bool: """检查是否在腋下系带""" return False def _is_too_loose(self, segment: Tuple, landmarks: dict) -> bool: """检查是否过松""" return False def _calculate_confidence(self, belt_segments: List) -> float: """计算检测置信度""" return 0.95
if __name__ == "__main__": detector = SeatbeltMisuseDetector() dummy_image = np.zeros((480, 640, 3), dtype=np.uint8) result = detector.detect_seatbelt(dummy_image) print(f"正确佩戴: {result['is_correct']}") print(f"状态: {result['misuse_type']}")
|