1. An information handling system having a free space gesture detection system comprising: a housing; a camera mounted in a side edge surface of the housing oriented to detect gestures by a user in a gesture detection zone next to the information handling system; a free space gesture detection system executing instructions on a processor determining available gesture commands for a software application operating on the information handling system; the free space gesture detection system maintaining a virtual gesture detection plane in the gesture detection zone, the virtual gesture detection plane calibrated to a location of a user's hand on a location and tilt angle of a detected working surface in the gesture detection zone; and the processor interpreting detected gestures in the virtual gesture detection zone to correspond to cursor control commands.