Hi everybody I am using logitech usb camera and after using command Ubuntu 14.04:LTS 64bit rosdistro: indigo

$ ~/catkin_ws/src/camera_umd/uvc_camera/launch$ rosrun camera_calibration cameracalibrator.py --size 8x6 --square 0.022  image:=/usb_cam/image_raw camera:=/usb_cam --no-service-check
Results:init done  opengl support available

No gui or calibration window is coming.

$ rostopic list
/astups/camera/image_raw
/astups/visualization_marker
/astups/visualization_marker_array
/camera/image
/camera_info
/clicked_point
/image_raw
/image_view_1457442113833318433/parameter_descriptions
/image_view_1457442113833318433/parameter_updates
/initialpose
/move_base_simple/goal
/rosout
/rosout_agg
/tf
/tf_static
/turtle1/cmd_vel
/usb_cam/camera_info
/usb_cam/image_raw

Could anybody inform me what bug should I use to solve this problem ?