نتایج جستجو برای: land cover change detection

تعداد نتایج: 1310818  

Journal: :Int. J. Applied Earth Observation and Geoinformation 2015
Xiaotong Yang Huiping Liu Xiaofeng Gao

Land cover change information is crucial to analyse the process and the change patterns of environments and ecological systems. Recent studies have incorporated object-based image analysis for its ability to generate meaningful geographical objects into studies of change detection. In this research, we developed a systematic methodology to realise multi-type land cover changed object detection ...

Journal: :Int. J. Applied Earth Observation and Geoinformation 2014
Xiaoman Huang Mark A. Friedl

More than 12 years of global observations are now available from NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS). As this time series grows, the MODIS archive provides new opportunities for identification and characterization of land cover at regional to global spatial scales and interannual to decadal temporal scales. In particular, the high temporal frequency of MODIS provides a ...

Journal: :Remote Sensing 2017
Martijn Kamps Willem Bouten Arie C. Seijmonsbergen

Active landslides have three major effects on landscapes: (1) land cover change, (2) topographical change, and (3) above ground biomass change. Data derived from multi-temporal Light Detection and Ranging technology (LiDAR) are used in combination with multi-temporal orthophotos to quantify these changes between 2006 and 2012, caused by an active deep-seated landslide near the village of Doren ...

2015
Dong-Min Woo Viet Dung Do

This paper presents a post-classification approach that can achieve efficient results for change detection by using AdaBoost classifier. In the first step, a land cover of satellite image is classified in the independent fashion. For the stable classification of man-made structures, 3D features are employed. 3D co-occurrence feature is used with 2D co-occurrence feature and Harr-like feature. A...

2006
P.K.E. Pellikka B.J.F. Clark T. Sirviö K. Masalin

This paper presents environmental change monitoring in the Taita Hills, Kenya applying SPOT XS satellite imagery, aerial photography and digital camera data. The paper presents the data, methods for atmospheric correction, and results from land cover change detection and soil erosion change detection. The results indicated that gully density has doubled in the test sites during the observation ...

Journal: :Remote Sensing 2017
Mingde You Anthony M. Filippi Inci Güneralp Burak Güneralp

Accurate characterization of the direction of land change is a neglected aspect of land dynamics. Knowledge on direction of historical land change can be useful information when understanding relative influence of different land-change drivers is of interest. In this study, we present a novel perspective on land-change analysis by focusing on directionality of change. To this end, we employed M...

2004
Daniel G. Brown

Land use can be defined as the values that humans obtain from landscapes. What is it that people are actually doing on the landscape? Though remote sensing is often used for mapping land use and land cover over large areas, to actually map land use usually requires some careful human interpretation of the imagery or, better, surveying or interviewing people on the ground to identify their use o...

2011
Marion Pfeifer Mathias Disney Tristan Quaife Rob Marchant

Methods We discuss four groups of EO products: land cover/cover change, vegetation structure and ecosystem productivity, fire detection, and digital elevation models. We address important practical issues arising from their use, such as assumptions underlying product generation, product accuracy and product transferability between spatial scales. We investigate the potential of EO products for ...

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