import cv2 from cv_bridge import CvBridge from sensor_msgs.msg import Image bridge = CvBridge() cv_image = cv2.imread("image.jpg") ros_image = bridge.cv2_to_imgmsg(cv_image, encoding="bgr8") bridge.copy(cv_image, ros_image) # Copies cv_image to ros_image
import cv2 from cv_bridge import CvBridge from sensor_msgs.msg import Image bridge = CvBridge() ros_image = Image() # A sensor_msgs/Image ROS message cv_image = bridge.imgmsg_to_cv2(ros_image, desired_encoding="passthrough") bridge.copy(ros_image, cv_image) # Copies ros_image to cv_imageIn both examples, the CvBridge.copy() function is used to copy the image data from one format to another. The cv_bridge package/library is used to convert the image between ROS messages and OpenCV format, which allows us to perform image processing tasks in Python using OpenCV while still interacting with ROS nodes and topics.