In this study, the experimental procedure was carried out by using the ENVI software and imageRF
software. Figure 3 presents a flowchart for forest health conditions classification using IKONOS MS
bands, GLCM features, Gi features, and a combination of the three datasets. In this experiment, after
IKONOS imagery data were preprocessed, the procedure of RF classification could be executed with
the following four main steps:
(1) classifying imagery using MS spectral bands only;
(2) classifying imagery using the GLCM textural features only;
(3) classifying imagery using the local spatial Gi features only; and
(4) classifying imagery using combined MS bands, GLCM, and Gi features, and ranking the
contribution of the spectral/textural/spatial features to the classification