نتایج جستجو برای: land sat satellite image

تعداد نتایج: 563637  

Introduction: Having accurate and up-to-date information on the status of land use and land cover change is a key point to protecting natural resources, sustainable agriculture management and urban development. Preparing the land cover and land use maps with traditional methods is usually time and cost consuming. Nowadays satellite imagery provides the possibility to prepare these maps in less ...

2011
Cem Ünsalan Kim L. Boyer

When there are many people who don't need to expect something more than the benefits to take, we will suggest you to have willing to reach all benefits. Be sure and surely do to take this multispectral satellite image understanding from land classification to building and road detection that gives the best reasons to read. When you really need to get the reason why, this multispectral satellite...

ژورنال: علوم آب و خاک 2011
علیرضا سفیانیان , , ملیحه السادات مدنیان, ,

Land cover maps derived from satellite images play a key role in regional and national land cover assessments. In order to compare maximum likelihood and minimum distance to mean classifiers, LISS-III images from IRS-P6 satellite were acquired in August 2008 from the western part of Isfahan. First, the LISS-III image was georeferenced. The Root Mean Square error of less than one pixel was the r...

Journal: :Computers & Geosciences 2009
André R. S. Marçal Arlete Rodrigues

A general framework for testing the quality of the segmentation of a multi-spectral satellite image is proposed. The method is based on the production of synthetic images with the spectral characteristics of the image pixels extracted from a signature multi-spectral image. The knowledge of the location of objects in the synthetic image provides a reference segmentation, which allows for a quant...

Ali Sarkargar Ardakani Alireza Bamdadi Saeed Sadeghian

In the fifth development plan establishment, establishment of the Cadastre System of agriculture nationwide has been defined to be the work priority of institutions and organizations responsible in the area of agriculture and equity issuance in the country. In this study, the possibility of provision of the Cadastral mapping of agriculture by a integration of the data of the remote sensing and ...

ژورنال: علوم آب و خاک 2009

Monitoring Land Use and Land Cover Changes have a significant role in environmental programming and management. Satellite data is an essential tool for detecting and analyzing environmental changes. Many change detection techniques have been developed which have advantages or disadvantages. Change Vector Analysis (CVA) technique is one such a method. This method is based on radiometric changes ...

2006
Sangbum Lee

Fuzzy c-means clustering (FCM) algorithm has been used to analyze the sub-pixel composition of medium spatialresolution satellite image (i.e., Landsat ETM). As urban landscape shows complex patterns of land cover composition and setting, it is difficult to have high accuracy in estimating urban land cover composition from Landsat image because of the mixed pixel problem. This study evaluates th...

Ali Sarkargar Ardakani Alireza Bamdadi Saeed Sadeghian

In the fifth development plan establishment, establishment of the Cadastre System of agriculture nationwide has been defined to be the work priority of institutions and organizations responsible in the area of agriculture and equity issuance in the country. In this study, the possibility of provision of the Cadastral mapping of agriculture by a integration of the data of the remote sensing and ...

2004
R. P. GUPTA A. Prakash

In an area like the Jharia coal® eld ( JCF), where extensive and rapid underground and opencast mining is going on continuously, land-use studies are of paramount importance. This paper discusses the remote sensing-GIS techniques used for identi® cation of various land-use classes on satellite imagery and enhanced products and identi® cation of time-sequential changes in land-use patterns. The ...

2013
S. PRABHU DR. D. TENSING

The proposed technique is used classify the satellite image into barren land, vegetation area, building area and road area. Initially, the satellite image is pre-processed and then is then segmented to have segments of barren land, vegetation area, building area and road area. The featuresof the segmented area are extracted and then final classification is carried out using fuzzy rule classifie...

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