Error in pi facetracker installing dependencies [closed]

edit

I'm getting the following error when I try to install the dependencies for pi_face_ tracker package as given in ROS pi_face_tracker

ERROR:the following packages/stacks could not have their rosdep keys resolved to system dependencies: pi_face_tracker_gui: Missing resource mjpeg_server ROS path [0]=/opt/ros/groovy/share/ros ROS path [1]=/opt/ros/groovy/stacks ROS path [2]=/home/bala/groovy_workspace ROS path [3]=/opt/ros/groovy/share pi_face_tracker: Missing resource openni_camera ROS path [0]=/opt/ros/groovy/share/ros ROS path [1]=/opt/ros/groovy/stacks ROS path [2]=/home/bala/groovy_workspace ROS path [3]=/opt/ros/groovy/share