How to Remove Clouds Using Fmask From Landsat Images In 10 Easy Steps By BylineEAL Salas on September 23, 2015October 20, 2015 So how would you remove clouds using Fmask from Landsat images? Fmask is a great and easy-to-use tool to mask out cloud covers from satellite images. Follow the steps belowContinue readingHow to Remove Clouds Using Fmask From Landsat Images In 10 Easy Steps