mediapipe可以计算出来俯仰角 偏航角 翻滚角吗 ,用python 實現
时间: 2024-10-09 18:13:49 浏览: 28
Mediapipe本身并不直接提供计算俯仰角、偏航角和翻滚角的功能,但它确实提供了关键点(landmark)的位置信息,你可以基于这些信息自行计算这些旋转角度。以下是一个简单的Python示例,如何使用 Mediapipe 的关键点来估计这些运动姿态:
```python
import cv2
import mediapipe as mp
# 初始化关键点追踪模块
mp_pose = mp.solutions.pose.Pose()
def draw_landmarks(image, results):
"""绘制关键点"""
landmarks = results.pose_landmarks.landmark
for landmark in landmarks:
x, y = int(landmark.x * image.shape[1]), int(landmark.y * image.shape[0])
cv2.circle(image, (x, y), 5, (0, 255, 0), -1)
def estimate_angles(results):
"""假设肩部、腰部和脚踝是计算角度的关键点"""
if not results.pose_landmarks:
return None
left_shoulder = results.pose_landmarks.landmark[mp_pose.POSE_CONNECTIONS["LEFT_SHOULDER"][0]]
hips = results.pose_landmarks.landmark[mp_pose.POSE_CONNECTIONS["hips"][0]]
left_foot = results.pose_landmarks.landmark[mp_pose.POSE_CONNECTIONS["LEFT_KNEE"][0]]
# 计算俯仰角(pitch)
pitch = calculate_pitch(left_shoulder, hips)
# 类似的,计算偏航角(yaw)和翻滚角(roll),这里仅作简化示例,实际需要更复杂的算法
roll = calculate_roll(left_shoulder, hips)
yaw = calculate_yaw(left_foot, hips)
return pitch, roll, yaw
def main():
cap = cv2.VideoCapture(0)
while True:
ret, frame = cap.read()
if not ret:
break
# 进行关键点检测
results = mp_pose.process(frame)
draw_landmarks(frame, results)
angles = estimate_angles(results)
if angles is not None:
print(f"Pitch: {angles[0]}, Roll: {angles[1]}, Yaw: {angles[2]}")
cv2.imshow("Mediapipe Pose", frame)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
if __name__ == "__main__":
main()
```
注意这里的 `calculate_pitch`, `calculate_roll`, 和 `calculate_yaw` 函数是需要你自己实现的,它们通常会涉及到三角函数以及空间向量的知识。上述代码只是一个基本框架,实际应用中可能需要调整关键点的选择、角度计算方法和误差校正等。
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