test.py 文件源码

def _image_callback(self, msg):
        """
        Sensor_msgs/Image callback
        :param msg: The image message
        """
        try:
            cv_image = self.bridge.imgmsg_to_cv2(msg, "bgr8")
        except CvBridgeError as e:
            rospy.logerr(e)
            return

        self._image_widget.set_image(cv_image)