camera calibration with warnings

asked 2017-03-19 22:39:18 -0600

anirban gravatar image

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

VIDIOC_S_CTRL: failed: Input/output error

VIDIOC_S_CTRL: failed: Input/output error

Any help or suggestion is appreciated.

VIDIOC_S_EXT_CTRLS: failed: Input/output error

VIDIOC_S_EXT_CTRLS: failed: Input/output error

Any help or suggestion is appreciated.

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Comments

The VIDIOC_S_CTRL error results could have resulted from attempting to set a manual control currently set to automatic http://askubuntu.com/questions/211971... .

lucasw gravatar imagelucasw ( 2017-03-20 07:25:43 -0600 )edit