Understanding Urban Environments from Satellite Imagery: Approaches, Data Extraction Methods and Applications
Studies on urban environments/ on THE urban environment require comprehensive understanding of the complex phenomena which shape and interact in urban contexts. One of the most important aspects in understanding urban environments is the use of the spatial approach, which can be carried out with the help of remotely sensed imagery. Satellite imagery can give a synoptic overview of an area, so that homogeneous analytical units can be developed as a basis for stratified sampling. Time series analysis using multitemporal images enables planners to monitor and to predict land-use change as well as urban area development. This presentation describes several approaches which can be used to study urban environments, followed by an overview of information extraction methods based on currently available satellite data. Several applications which integrate remote sensing and geographical information systems (GIS), related to land-use classification, settlement pattern analysis, land-use change and fragmentation, urban heat islands, vector-borne infectious diseases, urban green spaces and a prediction model for urban area development are briefly explained, including their advantages and limitations. This presentation also highlights some research needs from the geoinformation perspective.
Dr. Projo Danoedoro
Centre for Remote Sensing and GIS (PUSPICS), Gadjah Mada University, Yogyakarta
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