Accuracy Assessment of Urban Green Coverage Extraction using IKONOS Imageries

Abstract

This study discusses about the accuracy of green coverage amounts inside urbanized area detected by both interpretation and NDVI-based image classification of IKONOS satellite imageries. For this purpose, the detail green coverage type was interpreted using ortho-rectified aerial photographs. The accuracy assessment was performed for each green coverage type such as garden trees, roadside trees and park trees on the basis of the number and size of green patches. The study area is located on the urbanized area of Nada-ku, Kobe City where the ratio of vegetation cover attains to 17.4%.