Journal ArticleDOI
Region-Based Spatial Preprocessing for Endmember Extraction and Spectral Unmixing
Gabriel Martin,Antonio Plaza +1 more
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TLDR
A novel unsupervised spatial preprocessing (SPP) module which adopts a region-based approach for the characterization of each endmember class prior to endmember identification using spectral information, and can be combined with any spectral-based endmember extraction technique.Abstract:
Linear spectral unmixing is an important task in remotely sensed hyperspectral data exploitation. This approach first identifies a collection of spectrally pure constituent spectra, called endmembers, and then expresses the measured spectrum of each mixed pixel as a combination of endmembers weighted by fractions or abundances that indicate the proportion of each endmember in the pixel. Over the last decade, several algorithms have been developed for automatic extraction of spectral endmembers from hyperspectral data, with many of them relying exclusively on the spectral information. In this letter, we develop a novel unsupervised spatial preprocessing (SPP) module which adopts a region-based approach for the characterization of each endmember class prior to endmember identification using spectral information. The proposed approach can be combined with any spectral-based endmember extraction technique. Our method is validated using both synthetic scenes constructed using fractals and a real hyperspectral data set collected by NASA's Airborne Visible Infrared Imaging Spectrometer over the Cuprite Mining District in Nevada and further compared with previous efforts in the same direction such as the spatial-spectral endmember extraction, automatic morphological endmember extraction, or SPP methods.read more
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Journal ArticleDOI
Advances in Hyperspectral Image and Signal Processing: A Comprehensive Overview of the State of the Art
Pedram Ghamisi,Naoto Yokoya,Jun Li,Wenzhi Liao,Sicong Liu,Javier Plaza,Behnood Rasti,Antonio Plaza +7 more
TL;DR: Rigorous and innovative methodologies are required for hyperspectral image (HSI) and signal processing and have become a center of attention for researchers worldwide.
Journal ArticleDOI
Incorporating spatial information in spectral unmixing: A review
TL;DR: This paper summarizes the available spatial spectral unmixing methods according to the following three categories: 1) endmember extraction, 2) selection of endmember combinations, and 3) abundance estimation.
Journal ArticleDOI
Progress in Hyperspectral Remote Sensing Science and Technology in China Over the Past Three Decades
TL;DR: Progress in hyperspectral remote sensing (HRS) in China is reviewed, focusing on the past three decades, to meet the demands of both common users and researchers in the scientific community.
Journal ArticleDOI
Foreword to the Special Issue on Spectral Unmixing of Remotely Sensed Data
TL;DR: The 19 papers in this special issue focus on the state-of-the-art and most recent developments in the area of spectral unmixing of remotely sensed data.
Journal ArticleDOI
Multi-Modal Change Detection, Application to the Detection of Flooded Areas: Outcome of the 2009–2010 Data Fusion Contest
Nathan Longbotham,Fabio Pacifici,Taylor Glenn,Alina Zare,Michele Volpi,Devis Tuia,E. Christophe,Julien Michel,Jordi Inglada,Jocelyn Chanussot,Qian Du +10 more
TL;DR: Interestingly, a simple unsupervised change detection method provided similar accuracy as supervised approaches, and a digital elevation model-based predictive method yielded a comparable projected change detection map without using post-event data.
References
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Journal ArticleDOI
Vertex component analysis: a fast algorithm to unmix hyperspectral data
TL;DR: A new method for unsupervised endmember extraction from hyperspectral data, termed vertex component analysis (VCA), which competes with state-of-the-art methods, with a computational complexity between one and two orders of magnitude lower than the best available method.
Journal Article
Spectral unmixing
Nirmal Keshava,John F. Mustard +1 more
TL;DR: The outputs of spectral unmixing, endmember, and abundance estimates are important for identifying the material composition of mixtures and the applicability of models and techniques is highly dependent on the variety of circumstances and factors that give rise to mixed pixels.
Journal ArticleDOI
Imaging Spectroscopy and the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS)
Robert O. Green,Michael L. Eastwood,Charles M. Sarture,Thomas G. Chrien,Mikael Aronsson,Bruce J Chippendale,Jessica Faust,Betina Pavri,Christopher J Chovit,Manuel Solis,Martin R Olah,Orlesa Williams +11 more
TL;DR: The Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) was the first imaging sensor to measure the solar reflected spectrum from 400 nm to 2500 nm at 10 nm intervals as mentioned in this paper.
Journal ArticleDOI
Fully constrained least squares linear spectral mixture analysis method for material quantification in hyperspectral imagery
D.C. Heinz,Chein-I-Chang +1 more
TL;DR: The authors present a fully constrained least squares (FCLS) linear spectral mixture analysis method for material quantification, where no closed form can be derived for this method and an efficient algorithm is developed to yield optimal solutions.