عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Urmia, the provincial city of West Azarbaijan, is considered as the tenth largest city of Iran and the second in north-west. The city of Urmia as the other large towns has experienced considerable structural changes in its traditional and old context. It is to admit that reaching a more detailed and comprehensive knowledge of the changes and the factors behind could very well help the managers and related programmers to solve the current problems of the city and be able to achieve a more healthy and sustainable city in present and future. An efficient way to understand the changes in physical body of the city is to carry out comparative study of various aerial images happily produced and archived by the national geographical organization. But one important problem that for such studies exists is the loss of coordinated and geo-referenced images which makes the comparative study particularly for a given spots and in detailed cases hard and impossible.