deletions | additions       diff --git a/A_3D_skeleton_detection_of__.tex b/A_3D_skeleton_detection_of__.tex  index a0ad588..f4899fe 100644  --- a/A_3D_skeleton_detection_of__.tex  +++ b/A_3D_skeleton_detection_of__.tex 
...
A 3D skeleton detection of the user in front of the device is processed from the depth image. The skeleton may be describe from the following joints: head, neck, right shoulder, left shoulder, right elbow, left elbow, right hand, left hand, torso, right hip, left hip, right knee, left knee, right foot, and left foot. To extract these joints, the user needs to be located around two meters away from the camera with the entire body visible until they are detected. It is also possible to extract the joints starting with the upper body without the need to have the whole body visible. This will be done to persons with disability. Figure 9 indicates two frames with the skeleton tracking accomplished with the Kinect device \cite{gonzalez2014kinect}. \cite{Gonz_lez_Ortega_2014}.