@inbook {12629, title = {Silhouette-Based Approaches}, booktitle = {Human Identification Based on GaitHuman Identification Based on Gait}, year = {2006}, month = {2006///}, pages = {45 - 105}, abstract = {Of the current approaches, most are based on analysis of silhouettes. This is like the earlier analysis which concerned abstracting a walking subject from the background and then deriving set of measurements that describe the shape and motion of that silhouette in a sequence of images. This is similar in approach the classic computer vision approach to recognize objects by using shape descriptions of objects derived, say, by optimal thresholding.}, author = {Nixon, M.S. and Tan, T. and Chellapa, Rama} }