Log Transform Based Optimal Image Enhancement Using Firefly Algorithm for Autonomous Mini Unmanned Aerial Vehicle: An Application of Aerial PhotographytextjournalArticleSamantaS.autMukherjeeA.autAshourA.S.autDeyN.autTavaresJ.M.R.S.autAbdessalem KarĂ¢aW.B.autTaiarR.autAzarA.T.autHassanienA.E.aut10.1142/S0219467818500195https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056471786&doi=10.1142%2fS0219467818500195&partnerID=40&md5=3adeb163e07d5b929f061cf9b22d2f8cjournal1842018continuingInternational Journal of Image and Graphics