A pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication system such as long term evolution (LTE) is provided. The method for operating a server includes receiving a first image including at least one tree, determining whether to generate a tree map based on the first image, based on a difference between first tree region data of the first image and second tree region data of a second image which is prestored, and generating the tree map according to determining.