mediapipe计算肩部到肘部到手臂的角度
时间: 2023-10-06 13:11:40 浏览: 28
要计算肩部到肘部到手臂的角度,可以使用Mediapipe中的Pose Landmark模块。这个模块可以检测人体的关键点,包括肩部、肘部和手腕等部位。以下是简单的步骤:
1.使用Mediapipe库导入Pose Landmark模块:
```
import mediapipe as mp
mp_drawing = mp.solutions.drawing_utils
mp_pose = mp.solutions.pose
```
2.加载图像或视频,使用Pose Landmark模块检测关键点:
```
with mp_pose.Pose(min_detection_confidence=0.5, min_tracking_confidence=0.5) as pose:
# 读入图像或视频,将图像传入pose.process()方法中
# 返回结果包含所有关键点的坐标
results = pose.process(image)
# 用mp_drawing绘制关键点
mp_drawing.draw_landmarks(image, results.pose_landmarks, mp_pose.POSE_CONNECTIONS)
```
3.计算肩部到肘部到手臂的角度:
```
left_shoulder = [results.pose_landmarks.landmark[mp_pose.PoseLandmark.LEFT_SHOULDER].x, results.pose_landmarks.landmark[mp_pose.PoseLandmark.LEFT_SHOULDER].y]
left_elbow = [results.pose_landmarks.landmark[mp_pose.PoseLandmark.LEFT_ELBOW].x, results.pose_landmarks.landmark[mp_pose.PoseLandmark.LEFT_ELBOW].y]
left_wrist = [results.pose_landmarks.landmark[mp_pose.PoseLandmark.LEFT_WRIST].x, results.pose_landmarks.landmark[mp_pose.PoseLandmark.LEFT_WRIST].y]
# 计算角度
angle = calculate_angle(left_shoulder, left_elbow, left_wrist)
```
其中,`calculate_angle()`是一个自定义的函数,用来计算角度。这个函数可以根据三个点的坐标计算出它们之间的角度。