写一段基于opencv疲劳驾驶检测的代码,包括眼睛和嘴部检测
时间: 2024-01-21 07:03:28 浏览: 68
好的,以下是一个基于OpenCV的疲劳驾驶检测的示例代码,包括眼睛和嘴部检测:
```python
import cv2
import dlib
# 加载预训练的人脸检测器和特征点检测器
detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor("shape_predictor_68_face_landmarks.dat")
# 加载眼睛检测器和嘴部检测器
eye_cascade = cv2.CascadeClassifier("haarcascade_eye.xml")
mouth_cascade = cv2.CascadeClassifier("haarcascade_mouth.xml")
# 定义阈值时间
eye_closed_time = 0
mouth_open_time = 0
THRESH_EYE_CLOSED = 2 # 眼睛闭合超过2秒则判断为疲劳驾驶
THRESH_MOUTH_OPEN = 1 # 嘴巴张开超过1秒则判断为疲劳驾驶
# 打开摄像头
cap = cv2.VideoCapture(0)
while True:
ret, frame = cap.read()
# 转换为灰度图像
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
# 人脸检测
faces = detector(gray, 0)
for face in faces:
# 特征点检测
landmarks = predictor(gray, face)
# 眼睛检测
eyes = eye_cascade.detectMultiScale(gray[face.top():face.bottom(), face.left():face.right()], 1.3, 5)
for (ex, ey, ew, eh) in eyes:
cv2.rectangle(frame, (face.left() + ex, face.top() + ey), (face.left() + ex + ew, face.top() + ey + eh), (0, 255, 0), 2)
if ew < 60:
eye_closed_time += 1
else:
eye_closed_time = 0
# 嘴部检测
mouths = mouth_cascade.detectMultiScale(gray[face.top():face.bottom(), face.left():face.right()], 1.3, 5)
for (mx, my, mw, mh) in mouths:
cv2.rectangle(frame, (face.left() + mx, face.top() + my), (face.left() + mx + mw, face.top() + my + mh), (0, 0, 255), 2)
if mh > 30:
mouth_open_time += 1
else:
mouth_open_time = 0
# 判断是否疲劳驾驶
if eye_closed_time > THRESH_EYE_CLOSED:
cv2.putText(frame, "WARNING: DRIVER FATIGUE (EYES)", (50, 50), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 0, 255), 2)
elif mouth_open_time > THRESH_MOUTH_OPEN:
cv2.putText(frame, "WARNING: DRIVER FATIGUE (MOUTH)", (50, 50), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 0, 255), 2)
# 显示图像
cv2.imshow("Frame", frame)
# 按下q键退出
if cv2.waitKey(1) & 0xFF == ord('q'):
break
# 释放摄像头并关闭窗口
cap.release()
cv2.destroyAllWindows()
```
这段代码首先加载了预训练的人脸检测器和特征点检测器,以及眼睛检测器和嘴部检测器。然后,通过摄像头捕获的视频流,不断进行人脸检测和特征点检测,并在图像中绘制出眼睛和嘴部的矩形框。同时,根据眼睛和嘴部的状态计算出阈值时间,如果超过阈值时间则判断为疲劳驾驶,并在图像中显示警告信息。最后,通过按下q键退出程序,并释放摄像头并关闭窗口。