Affiliation: | a Machine Intelligence Unit, Indian Statistical Institute, Kolkata, India;b Image Processing and Modeling, Interdisciplinary Center for Scientific Computing (IWR), University of Heidelberg, Speyerer Strasse 6, D-69115 Heidelberg, Germany;c Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Canada T6G 2G7;d Systems Research Institute, Polish Academy of Sciences, Warsaw, Poland |