1. A method for classifying one or more objects in at least one video, wherein the at least one video comprises a plurality of frames, the method comprising: tracking one or more objects in the plurality of frames; computing a level of deformation for each of the one or more tracked objects in accordance with at least one change in a plurality of histograms of oriented gradients for a corresponding tracked object; and classifying each of the one or more tracked objects in accordance with the computed level of deformation.