PROBLEM TO BE SOLVED: To provide a green space with high mental/physiological effect on people. SOLUTION: The green space evaluation apparatus includes: an image in which a land to be maintained is imaged according to people's field of vision; a relative illuminance for indicating an illuminance inside of the land compared to an illuminance outside of the land; and a storage unit for storing the presence/absence of covering of tall/subtall trees in the land. The green space evaluation apparatus accepts the input of the image and stores in the storage unit, accepts the input of the relative illuminance and stores in the storage unit, accepts the input of the presence/absence of covering of the tall/subtall trees and stores in the storage unit, extracts a green region included in the stored image and calculates a green view rate which indicates a ratio of the extracted green region to the entire region of the image, determines whether conditions are met such as the calculated green view rate is within the determined range, the relative illuminance is within the determined range, and the covering of the tall/subtall trees is present, and outputs the determination result. COPYRIGHT: (C)2012,JPO&INPIT
