In order for render() to work with the other engines, you must publish the camera messages on a topic with the same name as the service. For example, on topic '/object/cam/sensors/camera_rgb'.
Seems that if the simulation doesn't end cleanly, the opencv window keeps hanging....
Also, the gripper actuator must be implemented in Gazebo & real bridge.
In order for render() to work with the other engines, you must publish the camera messages on a topic with the same name as the service. For example, on topic '/object/cam/sensors/camera_rgb'.
Seems that if the simulation doesn't end cleanly, the opencv window keeps hanging....
Also, the gripper actuator must be implemented in Gazebo & real bridge.