Abstract
ABSTRACT The healthy development of urbanisation affects the people who live in urban areas directly. The main task of municipalities and city planners should be the effective establishment of the relationship between city and its people. In other words it should be to propose well planned and livable towns and cities to city dwellers. The municipalities and city planners have to be constantly ahead of the city development in order to realize this purpose. This is only possible by an accurate analysis of the present and a logical prediction of the future of the city. Otherwise, we would have to face a development that has been brought by coincidences which would result in a caotic city life. The target of local goverments is to give services of good quality to city dwellers. Needles to say, it is possible to give high quality services only with the help of accurate and contemporary data. Detecting the physical changes in urban areas with the criteria mentioned above affects the quality of the sevice given directly. It is possible to make a healty analysis of the city with the help of middle scale geographic information(GIS) systems and large scale land information systems (LIS). The given data, as mentioned above, should be current, accurate and easy to reach. Today, the technology of satellite imagery is rapidly growing and renewing itself providing an economic means to meet this need. A system, which provides an opportunity to the municipalities and city planners to make fast, economic and accurate predictions in a GIS milieu in short time periods has been built by using the present 1 : 25 000 scale maps and SPOT-Pancromatic and LANTSAT-TM images. With the designed system, the phsical changes of a city can be detected half automaticly. Istanbul has been choosen as the pilot area to which the designed system has been applied. The phsical changes which have taken place from 1972 to 1990 (both regional and whole area taken as base) have been brought to light. The satellite images have been processed, analized and later turned into a data structure suitable for the GIS. The designed system is not only XIIIaimed at using the map data and satellite images together. It, at the same time, provides an opportunity to use satellite images of different times. In the Istanbul example the basic structural changes which had taken place in the city has been exposed. The obtained data embodies the quality to provide a great source for later studies. For instance, it will be possible to spot the squat areas by refering to the changes in the sattelement areas as a source first and than doing an actual ground control in the area. This sudty is not a mere application of a system, but it carries the quality of an experiment based on the methodology and consists of six chapters and twelve additions. In the first chapter, the necessity and purpose of the designed system has been mentioned by emphisizing on the importance of change detection on city planning municipality. In the second chapter, the satellite data that has been used is introduced. The theoretical bases which act as a source to the analysis and design of the system has been put forward in the work flow scheme order. Thus the theoretical structure of the proposed thesis has been established in this chapter. In the third chapter, the general structure of the system has been presented by defining the system analysis and the design. In the fourth chapter, the designed system has been implemented in the pilot area. All the phases of the designed system has been realized by using the maps and satellite imagery belonging to the pilot area.The queries, analysis, the result of the queries, tables and some other documents of the pilot area which has been obtained through change detection by the entegration of the GIS and satellite data at the and of the application has been presented. In the fifth chapter, the thesis has been discussed and evaluated in general. The problems which have occured during the formation of the system has been presented and the uses of the system has been explained. XIVIn the sixth chapter, the results that this thesis has reached has been mentioned. The contribution of a fast, economical and accurate change detection of urban areas to urban planning and municipalities has been presented through the help of the results and analysis. The experiences acquired from the thesis are presented and suggestions towards future studies have been mentioned as well. XV
