Image Edge Detection Using Fractional Calculus with Feature and Contrast Enhancement. - Amita Nandal; Hamurabi Gamboa-Rosales; Arvind Dhaka; José M. Celaya-Padilla; Jorge I. Galván-Tejada; Carlos Eric Galván-Tejada; Francisco Javier Martínez-Ruiz; Cesar Guzman-Valdivia (Circuits Syst. Signal Process., 2018)