نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه سنجش از دور و GIS، دانشکده جغرافیا و علوم محیطی، دانشگاه حکیم سبزواری
2 گروه سنجش از دور و GIS، دانشکده جغرافیا و علوم محیطی، دانشگاه حکیم سبزواری، سبزوار، ایران
3 گروه جغرافیا و برنامه ریزی شهری، دانشکده جغرافیا و علوم محیطی، دانشگاه حکیم سبزواری، سبزوار، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Classification and labeling of satellite images in remote sensing (RS), as well as improvement in their classification accuracy, have received researchers' attention for decades. The present study compares two classification methods—namely, the Rule-Based Fuzzy System and the proposed Wavelet Feature-Based Minimum Distance (W-F-M-D) algorithm—for medium-resolution images, particularly in heterogeneous landscapes. The Advanced Land Imager (ALI) was studied in an area located in southwestern Tehran, Iran. For validation, the land cover map obtained from both methods was compared with ground truth data through confusion matrix analysis, Kappa coefficient, and overall accuracy. The best results for the W-F-M-D algorithm were achieved with an overall accuracy of 93.55% and a Kappa coefficient of 0.89. Meanwhile, the results obtained from the fuzzy method were also satisfactory, with an overall accuracy of 89.27% and a Kappa coefficient of 0.84. However, the simplicity and speed of the proposed W-F-M-D algorithm constitute an additional advantage over the fuzzy method. From a different perspective, in the heterogeneous urban-agricultural area with moderate spatial resolution, the accuracy obtained for the urban area map—compared to that of bare lands—using the W-F-M-D method was evaluated as satisfactory, with producer's accuracy of 99.25% and user's accuracy of 91.67%.
کلیدواژهها [English]