Results 231 to 240 of about 7,458 (261)

Extraction of urban impervious surfaces from an IKONOS image

International Journal of Remote Sensing, 2009
Impervious surface has been recognised as an important indicator in urban environmental assessment. However, accurate extraction of impervious surface information in urban areas is a challenge because of the complexity of impervious materials. This paper explores different approaches for impervious surface extraction with IKONOS imagery in Indianapolis,
Dengsheng Lu, Qihao Weng
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Overview of Hyperspectral Remote Sensing of Impervious Surfaces in Urban Environment

2013
In this paper we provide a concise overview of hyperspectral studies of impervious surface in urban environment. We highlight socio-ecological impact of urban conglomerate on the surroundings. We present few important techniques of material detection using spectral matching methods - a unique opportunity provided by hyperspectral data.
Shailesh S. Deshpande, Arun B. Inamdar, Harrick Vin   +2 more
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Analysis of the Degree of Urban Impervious Surface based on Object-Oriented Method

IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium, 2008
Analysis of the degree of urban impervious surface can provide scientific information for urban-related issues. In this paper, we performed a classification of the degree of imperviousness in Miyun urban areas of China's Beijing region based on object-oriented method with Landsat TM data in 2006.
Qulin Tan, Zhengjun Liu, Xiaofang Li
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Extraction of urban impervious surface from hyperspectral remote sensing image

2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, 2010
Taking Xuzhou city as the case study area, EO-1 Hyperion hyperspectral remote sensing image captured in 2004 was chosen as the data source to extract impervious surface area (ISA) by spectral mixture analysis using LSMM model. In order to demonstrate the advantages of hyperspectral images and LSMM for ISA extraction, hyperspectral image was compared ...
Peijun Du, Junshi Xia, Wen Cao, Xiaoling Wang   +3 more
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Mapping urban surface imperviousness using SPOT multispectral satellite images

2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
In this paper, we performed a classification of the degree of imperviousness in Miyun urban areas of China's Beijing region based on object-oriented method with SPOT multi-spectral data. The approach mainly involved establishing an image object hierarchy consisting of three levels of different scale.
Qulin Tan, Zhengjun Liu, Xiaofang Li
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Impervious surface coverage and their impact on other components of the urban ecosystem in Beijing

2010 IEEE International Geoscience and Remote Sensing Symposium, 2010
Using Beijing city as a case, firstly the Impervious Surface Percentage (ISP) are extracted by Linear Spectral Unmixing method in the paper, and the accuracy was tested by aerial photograph with high spatial resolution. Then the information of vegetation percentage, Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST ...
Dan Meng 0005, Huili Gong, Xiaojuan Li 0001, Wenji Zhao, Yanfang Li   +4 more
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Segmentation of Urban Impervious Surface Using Cellular Neural Networks

2015
In this paper an automatic segmentation technique for endmember detection to urban impervious surface with the help of the Biophysical Composition Index (BCI) and the segmentation based on Cellular Neural Network (CNN) was proposed. In particular, we focused in the derivation of BCI through of Landsat-8 Operational Land Imager (OLI) images, to proceed ...
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Impact of impervious surface on urban heat island in Wuhan, China

SPIE Proceedings, 2008
Impervious surfaces (IS), as one of the most important land cover types and characteristic of urban/suburban1 environments, are known to effect urban surface temperatures by altering the sensible and latent heat fluxes. This study examined the effect IS spatial patterns have on land surface temperature (LST) in Wuhan, China.
Liqin Cao, Pingxiang Li, Liangpei Zhang
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Classifying Total and Effective Impervious Surfaces for Urban Hydrologic Modeling

Impacts of Global Climate Change, 2005
This paper describes an approach using maximum likelihood classification of high-resolution (< 4–m) multi-spectral data to determine the total impervious areas in a watershed in Houston, Texas, USA. The areas studied included a commercial district, an industrial site, and two residential areas, one with a very small amount of tree canopy coverage and ...
WooSuk Han, Steven J. Burian
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Atmospheric mercury accumulation and washoff processes on impervious urban surfaces

Atmospheric Environment, 2008
Abstract The deposition and transport of mercury (Hg) has been studied extensively in rural environments but is less understood in urbanized catchments, where elevated atmospheric Hg concentrations and impervious surfaces may efficiently deliver Hg to waterways in stormwater runoff.
Chris S. Eckley, Brian Branfireun, Miriam Diamond, Peter C. Van Metre, Frank Heitmuller   +4 more
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