نتایج جستجو برای: landsat imagery

تعداد نتایج: 55956  

2000
William Streilein Allen Waxman William Ross Fang Liu Michael Braun David Fay Paul Harmon Chung Hye Read

1 This work was sponsored by the U.S. National Imagery and Mapping Agency, under Air Force Contract F19628-95-C-0002. Opinions, interpretations, conclusions, and recommendations are those of the authors and not necessarily endorsed by the U.S. Air Force Abstract – We present work on methods and user interfaces developed for interactive mining for Feature Foundation Data (e.g. roads, rivers, orc...

Journal: :Remote Sensing 2016
Longwei Li Dengsheng Lu Wenhui Kuang

Analysis of urban distribution and its expansion using remote sensing data has received increasing attention in the past three decades, but little research has examined spatial patterns of urban distribution and expansion with buffer zones in different directions. This research selected Hangzhou metropolis as a case study to analyze spatial patterns and dynamic changes based on time-series urba...

Journal: :Remote Sensing 2017
Kai Liu Hongbo Su Xueke Li

Quantifying vegetation fractional cover (VFC) and assessing its role in heat fluxes modeling using medium resolution remotely sensed data has received less attention than it deserves in heterogeneous urban regions. This study examined two approaches (Normalized Difference Vegetation Index (NDVI)-derived and Multiple Endmember Spectral Mixture Analysis (MESMA)-derived methods) that are commonly ...

Journal: :Remote Sensing 2016
Zhenyuan Xi Dengsheng Lu Lijuan Liu Hongli Ge

Hickory plantations play an important role in improving local farmers’ economic conditions, but extreme drought in July–August 2013 seriously influenced hickory nut production. It is necessary to understand the extent and magnitude of this drought-induced hickory disturbance through mapping its spatial distribution using remote sensing data. This paper proposes a new approach to examine hickory...

Journal: :Environmental management 2010
Michael J White Daniel E Storm Philip Busteed Scott Stoodley Shannon J Phillips

In the United States, many state and federally funded conservation programs are required to quantify the water quality benefits resulting from their efforts. The objective of this research was to evaluate the impact of conservation practices subsidized by the Oklahoma Conservation Commission on phosphorus and sediment loads to Lake Wister. Conservation practices designed to increase vegetative ...

2004
R. Douglas Ramsey Dennis L. Wright Chris McGinty

Many land-management agencies are caught between decreased budgets and increasing public interest. Furthermore, semi-arid landscapes are sensitive to management prescriptions and use, and require a significant amount of monitoring in order to assess vegetation productivity and health. The purpose of this study was to evaluate the use of Landsat Enhanced Thematic Mapper (ETM) Imagery to monitor ...

2017
Rosa Lasaponara Beniamino Murgante Abdelaziz Elfadaly Mohamad Molaei Qelichi Saeed Zanganeh Shahraki Osama Wafa Wael Attia

Instrumental to the concept of sustainability must be the search for feasible ways to implement sustainability, especially connecting heritage and tourism. This should be understood in relationship with the persistence in time and the current and future conception of the human-made environment. This study deals with the spatial characterization over time of the urban sprawl close to and around ...

Journal: :Remote Sensing 2017
Panshi Wang Chengquan Huang Eric C. Brown de Colstoun

Understanding and monitoring the environmental impacts of global urbanization requires better urban datasets. Continuous field impervious surface change (ISC) mapping using Landsat data is an effective way to quantify spatiotemporal dynamics of urbanization. It is well acknowledged that Landsat-based estimation of impervious surface is subject to seasonal and phenological variations. The overal...

2002
M. Riley

Existing image segmentation algorithms have recently been ported to the widely used ERDAS Imagine graphical user interface. Within the USDA Forest Service Region 5 Remote Sensing Lab these algorithms have traditionally been applied to Landsat TM data for the purpose of landscape delineation. A less confining image processing environment, combined with the wide availability of finer resolution d...

1990
Jerome K. Vanclay Robert A. Preston

Regression analysis was used to develop a relationship between Landsat 5 Thematic Mapper data and site quality of permanent sample plots. The thermal band (6) produced misleading results, but the ratio of band 4 on 5 showed promise when combined with geological information. Best results were obtained when regression analysis was restricted to ensure that at least one each of the visible (1 to 3...

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