Accuracy assessment
Assessment of classification accuracy is the procedure used to quantify the reliability of classified image. Accuracy assessment of image classification 1979, 1989, 1999, 2009 and 2019 images were carried out to determine the quality of information obtained from the data. For each classified images it is essential to perform an accuracy assessment in order to obtain a useful data for the change detection and analysis (Owojori and Xie, 2005). In this study stratified random sampling was done by comparing the reference image with classified image with some random points. The accuracy assessment was obtained using 50 random points of every classified image. In addition, a nonparametric Kappa test was also applied to assess the extent of classification accuracy.