检索结果-南通市图书馆

作者：李家存中国科学院遥感应用研究所

＜正＞ Several land cover change detection approaches have been developed such as traditional post-classification cross-tabulation, cross-correlation analysis, neural networks and knowledge-based expert systems. But the procedures for analyzing remote sensing image have relied upon pixel-based methods. So, these methods are restricted by the spatial resolution of remote sensing image and widely used with moderate resolution *** the advent of high spatial resolution remote sensing data, this situation is different. The characteristics of high spatial resolution remote sensing image are different essentially with these of moderate resolution image. So, these traditional methods are not applicable with the new data. In order to solve the problems and make full use of the advantages of high spatial resolution data, an object-oriented land cover change detection approach was developed in this paper. The whole image was segmented into several objects by texture characteristics and relationship between each pixel. Then, a supervised classification was carried out at the object level. The change detection was also realized by the comparison between images of different times.

关键词： object-oriented land cover change detection high spatial resolution

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Integration of remotely sensed indices for land cover changes caused by the 2009 Victorian bushfires using landsat TM imagery

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Journal of Coal Science & Engineering(China) 2010年第4期16卷 400-407页

作者： GUO Li LI Xiao-jing XU Xian-lei GE Lin-lin School of Surveying and Spatial Information Systems University of.New South Wales Sydney Nsw 2052 Australia College of Geoscience and Surveying Engineering China University of Mining and Technology （Beijing） Beijing 100083 China

In order to minimise the bushfires negative impacts on society, an efficient andreliable bushfire detection system was proposed to assess the devastated effects of the2009 Victorian *** is possible to utilise the repetitive capability of satellite remotesensing imagery to identify the location of change to the Earth's surface and integrate thedifferent remotely sensed *** results confirm that the procedure can offer essentialspatial information for bushfire assessment.

关键词： the 2009 Victorian bushfires landsat TM land cover change detection image differencing post-classification comparison remotely sensed indices

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