16. The system of claim 12 , wherein the classifier is employed to predict the type of terrain proximal to the current terrain.
12. A system for unattended detection unattended detection of a current terrain to be traversed by a mobile device, comprising: at least one image capturing device for receiving visual input of the current terrain for a plurality of positions; at least one audio capturing device for receiving audio input corresponding to the current terrain for the plurality of positions; at least one processor communicatively connected to the at least one image capturing device and the at least one audio capturing device for: fusing the video input with the audio input using a classifier; and classifying the type of the current terrain with the classifier.