carla显示毫米波雷达图像代码
时间: 2023-11-28 16:03:49 浏览: 140
以下是使用Python和ROS获取和显示Carla中毫米波雷达图像的示例代码:
```python
import rospy
from sensor_msgs.msg import PointCloud2
import sensor_msgs.point_cloud2 as pc2
import numpy as np
import cv2
def callback(data):
# Convert PointCloud2 to numpy array
pointcloud = np.array(list(pc2.read_points(data)))
# Extract x, y, z coordinates
x = pointcloud[:, 0]
y = pointcloud[:, 1]
z = pointcloud[:, 2]
# Convert to polar coordinates
r = np.sqrt(x**2 + y**2)
theta = np.arctan2(y, x)
# Filter out points outside of desired range and angle
mask = (r < 100) & (theta > -np.pi/4) & (theta < np.pi/4)
x = x[mask]
y = y[mask]
z = z[mask]
# Scale and shift coordinates for image display
x = (x / 2.0) + 200
y = (y / 2.0) + 200
# Create empty image
img = np.zeros((400, 400), np.uint8)
# Draw points on image
for i in range(len(x)):
cv2.circle(img, (int(x[i]), int(y[i])), 2, (255, 255, 255), -1)
# Display image
cv2.imshow('mmwave_radar', img)
cv2.waitKey(1)
rospy.init_node('mmwave_radar', anonymous=True)
rospy.Subscriber('/carla/vehicle/xxx/lidar/radar', PointCloud2, callback)
rospy.spin()
```
在此示例中,我们订阅了Carla仿真器中车辆的毫米波雷达传感器的点云数据。我们首先将点云数据转换为numpy数组,然后提取出x,y和z坐标。接下来,我们将坐标转换为极坐标,并过滤掉超出所需范围和角度的点。最后,我们将坐标缩放和平移,以便在400 x 400像素的图像上显示,并将点绘制在图像中。
请注意,此代码仅显示了雷达图像,您可以根据需要添加其他功能。
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