Unity : scene is missing a fullscreen camera

as i am using unity 5.2 32bit
when i run in game mode or the play button, it says scene is missing a fullscreen camera
and at the same time my webcam become activated
i already added my webcam to the webcam behavior script also

my hierarchy :
Image Target
-(3d object, lets say its a 3D of an apple)

below i uploaded my ar camera inspector image

any help will be appreciated, thanks

![alt text][1]

try to set your camera’s viewport’s width to 1.0

It looks like your ARCamera GameObject is missing a Camera component. Also like @meat5000 said, you shoudl tag the selected object with the MainCamera tag.

i think the ARCamera is not activated