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Fusion of high resolution satellite SAR and optical images

Fusion of high resolution satellite SAR and optical images

引用

International Workshop on Multi-Platform/Multi-Sensor Remote Sensing and Mapping

作者： Chandrakanth, R. Saibaba, J. Varadan, Geeta Raj, P. Ananth Advanced Data Processing Research Institute Department of Space Hyderabad India Department of ECE College of Engineering Osmania University Hyderabad India

ISBN: (纸本)9781424494040

This paper proposes a methodology for fusion of high resolution satellite SAR and Optical Panchromatic images. The main objective of fusion is to bring together complementary information contained in SAR and Optical images. The paper discusses and illustrates the issues involved in merging and choosing of suitable approaches to overcome them. The choosing of proper fusion method was explained from the point of nature of SAR and Optical wave interaction with the surface and objective of fusion. Two methods are proposed in this paper one is based on Fourier filtering and the other is based on multi-resolution pyramid. The methodologies are applied on Cartosat-1 Panchromatic and TerraSAR-X images. The results and evaluation of the fusion based on entropy are presented. ©2011 IEEE.

关键词： Synthetic aperture radar

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WebSense: A lightweight and configurable application for publishing sensor network data

WebSense: A lightweight and configurable application for pub...

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2011 7th International Conference on Intelligent Sensors, Sensor Networks and Information processing, ISSNIP 2011

作者： Cardell-Oliver, Rachel Huebner, Christof Foeller-Nord, Miriam School of Computer Science and Software Engineering University of Western Australia Perth Australia Institute for Industrial Data Processing and Communication University of Applied Sciences Mannheim Mannheim Germany Institute for Embedded and Mobile Computing University of Applied Sciences Mannheim Mannheim Germany

ISBN: (纸本)9781457706738

Wireless sensor networks generate volumes of scientific observations. However, gathered data is typically not published for use by other scientists. This paper analyses the reasons that so little sensor network data is published online in a usable form, and identifies gaps in currently available publication systems. To address these gaps we present WebSense, a lightweight and configurable web-based tool for sensor network researchers to publish their collected data. The design goals and implementation of WebSense are described and the system is evaluated against the goals. WebSense is available from http://***/ © 2011 IEEE.

关键词： Wireless sensor networks

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Feasibility of high resolution SAR and multispectral data fusion

Feasibility of high resolution SAR and multispectral data fu...

引用

IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： R. Chandrakanth J. Saibaba Geeta Varadan P. Ananth Raj Department of Space Advanced Data Processing Research Institute Hyderabad India Department of ECE College of Engineering Osmania University Hyderabad India

Unlike PAN sharpening, the fusion of SAR with multispectral data involve use of non-overlapping spectral bands which poses certain inconsistencies viz. 1) radiometric differences due to their acquisition in entirely different spectral bands 2) geometric differences due to range and angular imaging of SAR and Optical sensors respectively. Apart from these, speckle noise and registration related factors will pose difficulties in the fusion. The geometric differences can be overcome to a certain extent by proper selection of acquisition parameters of the sensor. In this context feasibility conditions for proper fusion by selection of data is explained. In regard to radiometry this paper proposes a methodology that is based on multiresolution pyramids and spectral weighting functions. It has shown better performance in preservation of both spatial, spectral contents as well as better overall information content in the fused image. It has shown good balance in contrast between high frequency features of SAR and multispectral images. The results of the proposed method are compared with other methods like wavelet, Ehlers, PCA and IHS. The result of applying on TerraSAR-X SAR images with IRS-P6, Liss-4 multispectral images are analysed and illustrated in the paper.

关键词： Optical sensors Optical imaging Adaptive optics Optical filters Image resolution Speckle Noise

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Fusion of High Resolution Satellite SAR and Optical Images

Fusion of High Resolution Satellite SAR and Optical Images

引用

International Workshop on Multi-Platform/Multi-Sensor Remote Sensing and Mapping

作者： R. Chandrakanth J. Saibaba Geeta Varadan P. Ananth Raj Advanced Data Processing Research Institute Department of Space Hyderabad India Department of ECE College of Engineering Osmania University Hyderabad India

This paper proposes a methodology for fusion of high resolution satellite SAR and Optical Panchromatic images. The main objective of fusion is to bring together complementary information contained in SAR and Optical images. The paper discusses and illustrates the issues involved in merging and choosing of suitable approaches to overcome them. The choosing of proper fusion method was explained from the point of nature of SAR and Optical wave interaction with the surface and objective of fusion. Two methods are proposed in this paper one is based on Fourier filtering and the other is based on multiresolution pyramid. The methodologies are applied on Cartosat-1 Panchromatic and TerraSAR-X images. The results and evaluation of the fusion based on entropy are presented.

关键词： Optical imaging Optical filters Adaptive optics Optical sensors Image resolution Speckle Optical scattering

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A Gaussian mixture motion model and contact fusion applied to the Metron data set

A Gaussian mixture motion model and contact fusion applied t...

引用

International Conference on Information Fusion

作者： Kathrin Wilkens Martina Daun Institute of Digital Signal Processing Faculty of Engineering University of Kiel Kiel Germany Department Sensor Data and Information Fusion Fraunhofer FKIE Wachtberg Germany

ISBN: (纸本)9781457702679

In active sonar, low measurement rates of up to several minutes are commonly used. Thus, strong manoeuvres may occur between two measurements. To assure high-quality tracking, target dynamics have to be modelled precisely. In this paper, a variant of the Nearly Constant Velocity model is presented with deviations modelled according to the assumption that for submarine manoeuvres a change in heading is more likely than a change in speed. The proposed motion model uses Gaussian Mixtures to approximate the non-Gaussian distribution after the Kalman Filter prediction step. It is realised in the framework of multi-hypothesis tracking and applied to the Metron data set which simulates sonar contacts detected by 25 distributed sonobuoys. A high amount of low-quality input data is provided to the tracker. Thus, this paper additionally proposes a contact-fusion approach to display the measurements of a single time step and of multiple sensors into Cartesian coordinates.

关键词： Target tracking Noise Approximation methods Uncertainty Sonar Kalman filters

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A Gaussian mixture motion model and contact fusion applied to the metron data set

A Gaussian mixture motion model and contact fusion applied t...

引用

作者： Wilkens, Kathrin Daun, Martina Institute for Digital Signal Processing Faculty of Engineering University of Kiel Kiel Germany Bundeswehr Technical Centre for Ships and Naval Weapons Naval Technology and Research Research Department for Underwater Acoustics and Marine Geophysics Kiel Germany Fraunhofer FKIE Department Sensor Data and Information Fusion Wachtberg Germany

ISBN: (纸本)9781457702679

关键词： Sonar

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WebSense: A lightweight and configurable application for publishing sensor network data

WebSense: A lightweight and configurable application for pub...

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Intelligent Sensors, Sensor Networks and Information processing Conference (ISSNIP)

作者： Rachel Cardell-Oliver Christof Huebner Miriam Foeller-Nord School of Computer Science & Software Engineering University of Western Australia Perth Australia Institute for Industrial Data Processing and Communication University of Applied Sciences of Mannheim Mannheim Germany Institute for Embedded and Mobile Computing University of Applied Sciences of Mannheim Mannheim Germany

关键词： data models Distributed databases Protocols Web services Publishing Semantics

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Measurement of water content profiles using spatial time domain reflectometry (spatial TDR) 34

Measurement of water content profiles using spatial time dom...

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34th IAHR Congress 2011 - Balance and Uncertainty: Water in a Changing World, Incorporating the 33rd Hydrology and Water Resources Symposium and the 10th Conference on Hydraulics in Water engineering

作者： Scheuermann, A. Schlaeger, S. Becker, R. Hübner, Ch. Wagner, N. School of Civil Engineering Golder Geomechanics Centre University of Queensland Brisbane St LuciaQLD4072 Australia Science - Engineering - Measurement sceme Lammbergweg 23 Horn - Bad Meinberg32805 Germany Department of Communications and Environment Rhein-Waal University of Applied Science Landwehr 4 Kleve47533 Germany Institute for Industrial Data Processing and Communication University of Applied Science Mannheim Paul-Wittsack-Strasse 10 Mannheim68163 Germany Bauhaus University Weimar Coudraystrasse 4 Weimar99423 Germany

ISBN: (纸本)9780858258686

Spatial Time Domain Reflectometry (spatial TDR) is a measurement method for determining water content profiles along electrically insulated probes (transmission lines). The method is based on the inverse modeling of TDR reflectograms using an optimisation algorithm. By means of using flat ribbon cables it is possible to take two independent TDR reflectograms from both ends of the probe, which are used to improve the spatial information content of the optimisation results and to consider effects caused by electrical conductivity. The method has been used for different purposes, such as monitoring water content distributions on a full scale dike model made of well-graded clean sand, the development of a flood warning system for small catchments with open ended 3-rod-probes and as a laboratory application for the investigation of water content dynamics in unsaturated soils. The contribution introduces the spatial TDR technology and presents results of different applications. © 34th IAHR Congress 2011. All rights reserved.

关键词： Probes

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Integration of data mining operations for structural health monitoring

Integration of data mining operations for structural health ...

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8th International Workshop on Structural Health Monitoring 2011: Condition-Based Maintenance and Intelligent Structures

作者： Sonnleitner, E. Kosorus, H. Anderlik, S. Stumptner, R. Freudenthaler, B. Allmer, H. Küng, J. FAW - Institute for Applied Knowledge Processing Johannes Kepler University Linz Altenberger Straße 69 4040 Linz Austria DKE - Institut für Wirtschaftsinformatik - Data and Knowledge Engineering Johannes Kepler University Linz Altenberger Straße 69 4040 Linz Austria SCCH - Software Competence Center Hagenberg GmbH Softwarepark 21 4232 Hagenberg Austria VCE Holding GmbH Hadikgasse 60 1140 Wien Austria

ISBN: (纸本)9781605950532

data Integration is a well elaborated scientific area and one of the most important use cases of the Semantic Web. Techniques developed in this field aim at providing interoperability between heterogeneous data sources. Compared to typical Semantic Web use cases, data integration issues are manifold and also affect applications through their underlying schemas. Civil engineers specialized in risk and measurement analysis need a reliable Decision Support System (DSS) that integrates various required techniques. Hence, Structural Health Monitoring (SHM) applications tend to adopt typical integration concepts, but not by regarding data and their semantics independent from the application domain. Instead, such a DSS should be accessible in an integrated manner to support the usage of methods and techniques from different systems according to their intended operational purpose. This paper presents some practical examples of using data Mining operations which enable a better understanding of the analysed data and which can be successfully integrated into a unified DSS for SHM.

关键词： Decision support systems

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A high-performance, low-power linear algebra core

A high-performance, low-power linear algebra core

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International Conference on Application Specific Systems (ASAP), Architectures and Processors

作者： Ardavan Pedram Andreas Gerstlauer Robert A. van de Geijn School of Geology Engineering and Geomatics Chang'an University Xi'an China Chinese Academy of Sciences Xi'an Institute of Optics and Precision Mechanics Xi'an P. R. China Geodetic Data Processing Center State Bureau of Surveying and Mapping Xi'an China

Achieving high-performance while reducing power consumption is a key concern as technology scaling is reaching its limits. It is well-accepted that application-specific custom hardware can achieve orders of magnitude improvements in efficiency. The question is whether such efficiency can be maintained while providing enough flexibility to implement a broad class of operations. In this paper, we aim to answer this question for the domain of matrix computations. We propose a design of a novel linear algebra core and demonstrate that it can achieve orders of magnitude improvements in efficiency for matrix-matrix multiplication, an operation that is indicative for a broad class of matrix computations. A feasibility study shows that 47 double- and 104 single-precision GFLOPS/W can be achieved in 19.5 and 15.6 GFLOPS/mm 2 , respectively with current components and standard 45nm technology.

关键词： Linear algebra Registers Computer architecture Hardware Program processors Kernel Bandwidth

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