Ros Frames not receiving

[ganeshpokale88]

After launching vslam launch

roslaunch bittle_driver bittle_vslam_robot.launch

Topic list:

/camera/camera_info
/camera/image_raw
/camera/image_raw/compressed
/camera/image_raw/compressed/parameter_descriptions
/camera/image_raw/compressed/parameter_updates
/camera/image_raw/compressedDepth
/camera/image_raw/compressedDepth/parameter_descriptions
/camera/image_raw/compressedDepth/parameter_updates
/camera/image_raw/theora
/camera/image_raw/theora/parameter_descriptions
/camera/image_raw/theora/parameter_updates
/cmd_vel
/orb_slam2/cam_path
/orb_slam2/clear_cam_path
/orb_slam2/frame
/orb_slam2/info/frame_keypoints
/orb_slam2/info/loop_closed
/orb_slam2/info/map_keyframes
/orb_slam2/info/matched_points
/orb_slam2/info/state
/orb_slam2/info/state_description
/orb_slam2/map
/orb_slam2/map_updates
/orb_slam2/octomap
/orb_slam2/projected_map
/orb_slam2/projected_morpho_map
/orb_slam2/switch_mode
/raspicam_node/image/raw
/rosout
/rosout_agg
/tf
/tf_static

But in Rviz showing No image on /orb_slam2/frame

I tried using rviz config provided but still it wont work Images are receving only on /camera/image_raw