I am trying to calibrate two usb cameras to use them as stereo camera. For that I have a .launch file that uses usb_cam and image_view packages to open the two cameras that I have been using and to view the images coming from them. I can see the images from both the cameras but the with the following warnings which I can not fix,
(image_raw:11482): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
[ WARN] [1489979939.283569928]: white_balance_temperature_auto: Input/output error
VIDIOC_S_CTRL: failed: Input/output error
[ WARN] [1489979939.335244086]: white_balance_temperature_auto: Input/output error
VIDIOC_S_CTRL: failed: Input/output error
Any help or suggestion is appreciated.
[ WARN] [1489979939.591631495]: focus_auto: Input/output error
VIDIOC_S_EXT_CTRLS: failed: Input/output error
[ WARN] [1489979939.639370798]: focus_auto: Input/output error
VIDIOC_S_EXT_CTRLS: failed: Input/output error
Any help or suggestion is appreciated.
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