关于标定后图像如何校订:http://wiki.ros.org/image_pipeline/CameraInfohtml
ros distortion vector 参数顺序:http://docs.ros.org/diamondback/api/sensor_msgs/html/CameraInfo_8h_source.html看注释api
http://docs.ros.org/jade/api/sensor_msgs/html/msg/CameraInfo.htmlhtm