was developedto generate image segments and to classify them intodesired land cover classes [1], [2]. Specifically, a contrast-splitsegmentation algorithm was first used to separate tall objectsfrom short objects based on nDSM [6]. The minimum andmaximum thresholds were set as 6 feet and 9 feet, respectively.We then further separated tall objects into buildings andtrees, and classified short objects into pavement and grass,as detailed follows.