We are trying to calibrate a USB camera running at 1080p (i.e., 1920x1080). When launching `usb_cam` and then `image_view`, the image comes up correctly at the right aspect ration.
`rosrun usb_cam usb_cam_node _image_width:=1920 _image_height:=1080 _pixel_format:=yuyv`
`rosrun image_view image_view image:=/usb_cam/image_raw`
However, whenever we try and run the camera calibration node, the aspect ratio of the image seems to be reversed:
`rosrun camera_calibration cameracalibrator.py --size 8x6 --square 0.025 image:=/usb_cam/image_raw camera:=/usb_cam`
We are running Ubuntu 14.04 64bit with the latest Indigo build.
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