نتایج جستجو برای: hyperspectral imagery

تعداد نتایج: 57811  

2010
Pattaraporn Khuwuthyakorn Antonio Robles-Kelly Jun Zhou

This chapter focuses on the problem of recovering a hyperspectral image descriptor based upon harmonic analysis. It departs from the use of integral transforms to model hyperspectral images in terms of probability distributions. This provides a link between harmonic analysi and affine geometric transformations between object surface planes in the scene. Moreover, the use of harmonic analysis pe...

2002
Chintan A. Shah Manoj K. Arora Stefan A. Robila Pramod K. Varshney

Conventional remote sensing classification techniques that model the data in each class with a multivariate Gaussian distribution are inefficient, as this assumption is generally not valid in practice. We present a novel, Independent Component Analysis (ICA) based approach for unsupervised classification of hyperspectral imagery. ICA, employed for a mixture model, estimates the data density in ...

2013
Semih Dinç Ramazan Savas Aygün

Since hyperspectral imagery (HSI) (or remotely sensed data) provides more information (or additional bands) than traditional gray level and color images, it can be used to improve the performance of image classification applications. A hyperspectral image presents spectral features (also called spectral signature) of regions in the image as well as spatial features. Feature reduction, selection...

2014
Caiyun Zhang

This study explored a combination of hyperspectral and lidar systems for vegetation mapping in the Florida Everglades. A framework was designed to integrate two remotely sensed datasets and four data processing techniques. Lidar elevation and intensity features were extracted from the original point cloud data to avoid the errors and uncertainties in the raster-based lidar methods. Lidar signif...

Journal: :Remote Sensing 2018
Julie Transon Raphaël d'Andrimont Alexandre Maugnard Pierre Defourny

In the last few decades, researchers have developed a plethora of hyperspectral Earth Observation (EO) remote sensing techniques, analysis and applications. While hyperspectral exploratory sensors are demonstrating their potential, Sentinel-2 multispectral satellite remote sensing is now providing free, open, global and systematic high resolution visible and infrared imagery at a short revisit ...

Journal: :J. Electrical and Computer Engineering 2013
Heesung Kwon Xiaofei Hu James Theiler Alina Zare Prudhvi Gurram

Copyright © 2013 Heesung Kwon et al. is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Recent advances in multispectral and hyperspectral sensing technologies coupled with rapid growth in computing power have led to new opportunities...

2012
Milosz Ciznicki Krzysztof Kurowski Antonio Plaza

Hyperspectral image compression has received considerable interest in recent years due to the enormous data volumes collected by imaging spectrometers for Earth Observation. JPEG2000 is an important technique for data compression, which has been successfully used in the context of hyperspectral image compression, either in lossless and lossy fashion. Due to the increasing spatial, spectral, and...

2002
Andrew Pilant Ross Lunetta Terrence Slonecker John Streicher John Iiames

The U.S. Environmental Protection Agency (EPA) National Exposure Research Laboratory (NERL) is conducting hyperspectral remote sensing (imaging spectroscopy) methods development research in the Neuse River Basin, North Carolina. Science objectives have focused on the potential applications of hyperspectral imagery for vegetation discrimination in biologically diverse ecosystems. Imagery was col...

2012
Lisa-Jen Ferrato Wayne Forsythe

Urban greenspace is important for the health of cities. Up-to-date databases and information are vital to maintain and monitor growth in cities. During the last decade, advances in spaceborne hyperspectral sensors have resulted in some advantages being gained over multispectral sensors for land cover monitoring (due to increased spectral resolution). The objective of this research was to compar...

2003
W. Andrew Marcus Carl J. Legleiter Richard J. Aspinall Joseph W. Boardman Robert L. Crabtree

This article evaluates the potential of 1-m resolution, 128-band hyperspectral imagery for mapping in-stream habitats, depths, and woody debris in thirdto fifth-order streams in the northern Yellowstone region. Maximum likelihood supervised classification using principal component images provided overall classification accuracies for in-stream habitats (glides, riffles, pools, and eddy drop zon...

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