An Object-oriented Approach to Urban Land Cover Change Detection
نویسنده
چکیده
Over the past decades, most of the remote sensing studies dealt with natural environment. The advance of remote sensing satellites and the innovative methods of proceeding high resolution images have contributed to integrated urban studies. This project is an attempt to use remote sensing technology so as to monitor the urban sprawl of the city of Thessaloniki and detect the changes occurred through the years. The changes are identified by imposing object-oriented classification on very high resolution images. The imagery data particularly includes two pan-sharpened images of Quickbird and Ikonos, dated July 2003 and July 2006 respectively. A rule-based classification technique is applied by using fuzzy functions, aiming to extract information of the urban spatial structure. Object-oriented algorithms are recommended in this case because they incorporate both spectral and spatial information. To identify the land cover types more effectively, additional semantic information is essential; for this purpose indices like the Normalized Difference Vegetation Index (NDVI) are also calculated.
منابع مشابه
Change Detection Gamasiab River Margins in Kermanshah by Comparison Pixel Base and Object Orientd Algorithms
Introduction Land use reflects the interactive characteristics of humans and the environment and describes how human exploitation works for one or more targets on the ground. Land use is usually defined on the basis of human use of the land, with an emphasis on the functional role of land in economic activities. Land use, which is associated with human activity, is undergoing change over time....
متن کاملObject-oriented Per-parcel Land Use Change Detection Integrating Gis and Remote Sensing
Urban is more sensitive to the change of land use/cover. The up-to-date information of land use/cover is very important for urban decision-making and sustainable development. Very high resolution satellite data are an alternative to monitor, update cartographic and geographic databases. In this paper, an object-oriented pre-parcel land use change detection approach integrating GIS and remote se...
متن کاملLand Use and Land Cover Change Detection in the Saudi Arabian Desert Cities of Makkah and Al-Taif Using Satellite Data
Land use/land cover (LULC) changes have become a central issue in current global change and sustainability research. Saudi Arabia has undergone significant change in land use and land cover since the government embarked on a course of intense national development 30 years ago, as a result of huge national oil revenues. This study evaluates LULC change in Makkah and Al-Taif, Saudi Arabia from 19...
متن کاملLand cover land use mapping and change detection analysis using geographic information system and remote sensing
Land cover/land use categories are relevant components in land management. Understanding how land cover/land use change over time is necessary to assess the consequences of humans and natural stressors on the earth’s environment and resources. The aim of the study was to map and monitor the spatial and temporal change in land cover/land use for the periods of 1977, 1991 and 2016 and to predict ...
متن کاملObject-oriented Change Detection from Multi-temporal Remotely Sensed Images
An object-oriented change detection algorithm was proposed and experimented to multi-temporal ALOS remotely sensed images. In contrast with conventional pixel-based algorithms, this approach processed homogenous blocks generated by object-oriented image segmentation for change detection. Similar pixels were merged into homogeneous objects by image segmentation at first, and each object (polygon...
متن کامل