Fig. 3
From: A combined change detection procedure to study desertification using opensource tools
Processing of the images for the combined procedure for Al Azraq Oasis. a. RGB composition of Landsat 5 image for 1984; b. RGB composition of Landsat 8 image for 2015; c. CVA classified angle map; d. CVA magnitude map; e. CVA final change map; f. RGB MAD map (components 1,5,6); g. MAD component 5 thresholded and classified map; h. RGB MAF map (variates 1,2,3); i. MAF variate 1 thresholded and reclassified map; j. Final change map. The legend for all the CVA maps is shown below