Log Transform Based Optimal Image Enhancement Using Firefly Algorithm for Autonomous Mini Unmanned Aerial Vehicle: An Application of Aerial Photography 10.1142/S0219467818500195 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056471786&doi=10.1142%2fS0219467818500195&partnerID=40&md5=3adeb163e07d5b929f061cf9b22d2f8c Scopus 18 4 2018 International Journal of Image and Graphics S.Samanta A.Mukherjee A.S.Ashour N.Dey J.M.R.S. Tavares W.B. Abdessalem KarĂ¢a R.Taiar A.T.Azar A.E.Hassanien