@article {14228, title = {MEASURING 1ST ORDER STRETCH WITH A SINGLE FILTER}, journal = {Relation}, volume = {10}, year = {2009}, month = {2009///}, pages = {691 - 691}, abstract = {We analytically develop a filter that is able to measurethe linear stretch of the transformation around a point, and present results of applying it to real signals. We show that this method is a real-time alternative solution for measuring local signal transformations. Experimentally, this method can accurately measure stretch, however, it is sensitive to shift. }, author = {Bitsakos,K. and Domke, J. and Ferm{\"u}ller, Cornelia and Aloimonos, J.} }