Multiscale object-oriented change detection over urban areas

Jianmei Wang; Deren Li

doi:10.1117/12.713136

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28 October 2006 Multiscale object-oriented change detection over urban areas

Jianmei Wang; Deren Li

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Proceedings Volume 6419, Geoinformatics 2006: Remotely Sensed Data and Information; 641917 (2006) https://doi.org/10.1117/12.713136
Event: Geoinformatics 2006: GNSS and Integrated Geospatial Applications, 2006, Wuhan, China

Abstract

Urban growth induces urban spatial expansion in many cities in China. There is a great need for up-to-date information for effective urban decision-making and sustainable development. Many researches have demonstrated that satellite images, especial high resolution images, are very suitable for urban growth studies. However, change detection technique is the key to keep current with the rapid urban growth rate, taking advantage of tremendous amounts of satellite data. In this paper, a multi-scale object-oriented change detection approach integrating GIS and remote sensing is introduced. Firstly, a subset of image is cropped based on existing parcel boundaries stored in GIS database, then a multi-scale watershed transform is carried out to obtain the image objects. The image objects are classified into different land cover types by supervised classification based on their spectral, geometry and texture attributes. Finally a rule-based system is set up to judge every parcel one by one whether or not change happened comparing to existing GIS land use types. In order to verify the application validity of the presented methodology, the rural-urban fringe of Shanghai in China with the support of QuickBird date and GIS is tested, the result shown that it is effective to detect illegal land use parcel.

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Jianmei Wang and Deren Li "Multiscale object-oriented change detection over urban areas", Proc. SPIE 6419, Geoinformatics 2006: Remotely Sensed Data and Information, 641917 (28 October 2006); https://doi.org/10.1117/12.713136

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