A New Automatic Processing Technique For Satellite Imagery Analysis

Author : R. S. Hawkins
Publisher : Unknown
Page : 74 pages
File Size : 55,7 Mb
Release : 1977
Category : Image processing
ISBN : IND:30000099982195

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A New Automatic Processing Technique for Satellite Imagery Analysis by R. S. Hawkins Pdf

A new approach to the analysis of satellite imagery is presented. The central part of this approach is an algorithm which compresses information stored in the ordinary six or eight bits per picture element into only one bit. The quality of this compression is demonstrated by examples of its application to high resolution visual imagery. Both visual inspection and rms difference criterion are used for this evaluation. There are four objectives of this report which are: to review the status of processing techniques which remove redundant information, to show the need for redundance reduction in the processing of satellite images, to present the development of an algorithm for reducing it, and to show results obtained by application of the algorithm to visual imagery. Also, comments are made on needed developments of the technique and its potential application to problems of analysis of satellite imagery data. (Author).

Author : R. S. Hawkins
Publisher : Unknown
Page : 68 pages
File Size : 49,5 Mb
Release : 1977
Category : Image processing
ISBN : OCLC:1075140407

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A New Automatic Processing Technique for Satellite Imagery Analysis by R. S. Hawkins Pdf

A new approach to the analysis of satellite imagery is presented. The central part of this approach is an algorithm which compresses information stored in the ordinary six or eight bits per picture element into only one bit. The quality of this compression is demonstrated by examples of its application to high resolution visual imagery. Both visual inspection and rms difference criterion are used for this evaluation. There are four objectives of this report which are: to review the status of processing techniques which remove redundant information, to show the need for redundance reduction in the processing of satellite images, to present the development of an algorithm for reducing it, and to show results obtained by application of the algorithm to visual imagery. Also, comments are made on needed developments of the technique and its potential application to problems of analysis of satellite imagery data. (Author)

Author : R. S. Hawkins
Publisher : Unknown
Page : 70 pages
File Size : 51,8 Mb
Release : 1977
Category : Image processing
ISBN : UOM:39015095137819

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A New Automatic Processing Technique for Satellite Imagery Analysis by R. S. Hawkins Pdf

A new approach to the analysis of satellite imagery is presented. The central part of this approach is an algorithm which compresses information stored in the ordinary six or eight bits per picture element into only one bit. The quality of this compression is demonstrated by examples of its application to high resolution visual imagery. Both visual inspection and rms difference criterion are used for this evaluation. There are four objectives of this report which are: to review the status of processing techniques which remove redundant information, to show the need for redundance reduction in the processing of satellite images, to present the development of an algorithm for reducing it, and to show results obtained by application of the algorithm to visual imagery. Also, comments are made on needed developments of the technique and its potential application to problems of analysis of satellite imagery data. (Author).

Author : Anonim
Publisher : Unknown
Page : 972 pages
File Size : 46,5 Mb
Release : 1988
Category : Aeronautics
ISBN : UFL:31262082071621

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Scientific and Technical Aerospace Reports by Anonim Pdf

Author : James T. Bunting,Ronald F. Fournier
Publisher : Unknown
Page : 46 pages
File Size : 51,9 Mb
Release : 1980
Category : Image processing
ISBN : UOM:39015095139625

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Tests of Spectral Cloud Classification Using DMSP Fine Mode Satellite Data by James T. Bunting,Ronald F. Fournier Pdf

A computer-based processor for satellite imagery was tested on samples of DMSP visible and IR imagery data smoothed to 0.6 n mi resolution. The data were displayed on the AFGL Man-computer Interactive Data Access System so that meteorologists could label small areas (25 x 25 n mi) with one of nine possible cloud categories from the AF 3D Nephanalysis Program (3DNEPH). The computer-based processor labeled the same areas by computing a two-dimensional fast Fourier transform (FFT) and comparing the results to average wavenumber spectra for the cloud categories. Classification accuracies were 65% for visible, 65% for IR and 81% for combined data. The classification accuracies were appreciably better than chance and a simplified processor which used only the averaged values of satellite data over an area. Accuracies improved is some categories were merged. The results were also compared to a cloud typing procedure in the 3DNEPH and to some earlier studies. The results were generally good for categories with small-scale cloud features such as cumulus or cirrus clouds, but the overall accuracy of classification for all cloud categories was not significantly better than verifications cited in earlier studies. Two potential refinements to the spectral processors, namely, removing the effects of backgrounds such as land, water, and snow cover and minimizing sensitivity to varying fractional cloud cover from case to case, are also discussed. (Author).

Author : Anonim
Publisher : Unknown
Page : 402 pages
File Size : 42,9 Mb
Release : 2024-07-02
Category : Environmental geology
ISBN : CHI:62485890

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Environmental Research Papers by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 414 pages
File Size : 48,6 Mb
Release : 1977
Category : Geophysics
ISBN : OSU:32435027525872

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Air Force Surveys in Geophysics by Anonim Pdf

Author : Surekha Borra,Rohit Thanki,Nilanjan Dey
Publisher : Springer
Page : 97 pages
File Size : 42,6 Mb
Release : 2019-02-08
Category : Technology & Engineering
ISBN : 9789811364242

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Satellite Image Analysis: Clustering and Classification by Surekha Borra,Rohit Thanki,Nilanjan Dey Pdf

Thanks to recent advances in sensors, communication and satellite technology, data storage, processing and networking capabilities, satellite image acquisition and mining are now on the rise. In turn, satellite images play a vital role in providing essential geographical information. Highly accurate automatic classification and decision support systems can facilitate the efforts of data analysts, reduce human error, and allow the rapid and rigorous analysis of land use and land cover information. Integrating Machine Learning (ML) technology with the human visual psychometric can help meet geologists’ demands for more efficient and higher-quality classification in real time. This book introduces readers to key concepts, methods and models for satellite image analysis; highlights state-of-the-art classification and clustering techniques; discusses recent developments and remaining challenges; and addresses various applications, making it a valuable asset for engineers, data analysts and researchers in the fields of geographic information systems and remote sensing engineering.

Author : Anonim
Publisher : Unknown
Page : 100 pages
File Size : 44,7 Mb
Release : 1979
Category : Astronautics
ISBN : OSU:32435020937314

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NASA Reference Publication by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 910 pages
File Size : 41,5 Mb
Release : 1976
Category : Astronautics in earth sciences
ISBN : UOM:39015039955706

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Earth Resources by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 818 pages
File Size : 50,9 Mb
Release : 1978
Category : Science
ISBN : OSU:32435028598407

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Government Reports Announcements & Index by Anonim Pdf

Author : Carlo Giovanni Cereti,Francesca Giofrè
Publisher : Sapienza Università Editrice
Page : 166 pages
File Size : 41,6 Mb
Release : 2021-07-05
Category : Education
ISBN : 9788893771849

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Sapienza for International Development Cooperation by Carlo Giovanni Cereti,Francesca Giofrè Pdf

The volume presents the interventions of the speakers and the posters of the professors of Sapienza University of Rome as evidence of the results achieved in international cooperation with a special emphasis on capacity building actions in the main geographical areas identified as: Africa, Mena countries and Latin America and Asia. The materials were presented at the University Conference “Sapienza in International Development: Strategies, Projects, Initiatives” held in Rome, at the Aula Magna of Sapienza University of Rome, on 11 December 2018 and organized with the collaboration of the Roma Sapienza Foundation. The volume also presents in its introductory part a moment of reflection on the geographical areas of cooperation of greatest interest and strategic for Sapienza.

Author : Anonim
Publisher : Unknown
Page : 652 pages
File Size : 46,5 Mb
Release : 1981
Category : Computers
ISBN : IND:30000100120363

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Computers, Control & Information Theory by Anonim Pdf

Author : Bruno Daniotti,Marco Gianinetto,Stefano Della Torre
Publisher : Springer Nature
Page : 400 pages
File Size : 53,8 Mb
Release : 2019-01-01
Category : Building
ISBN : 9783030335700

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Digital Transformation of the Design, Construction and Management Processes of the Built Environment by Bruno Daniotti,Marco Gianinetto,Stefano Della Torre Pdf

This open access book focuses on the development of methods, interoperable and integrated ICT tools, and survey techniques for optimal management of the building process. The construction sector is facing an increasing demand for major innovations in terms of digital dematerialization and technologies such as the Internet of Things, big data, advanced manufacturing, robotics, 3D printing, blockchain technologies and artificial intelligence. The demand for simplification and transparency in information management and for the rationalization and optimization of very fragmented and splintered processes is a key driver for digitization. The book describes the contribution of the ABC Department of the Polytechnic University of Milan (Politecnico di Milano) to R&D activities regarding methods and ICT tools for the interoperable management of the different phases of the building process, including design, construction, and management. Informative case studies complement the theoretical discussion. The book will be of interest to all stakeholders in the building process - owners, designers, constructors, and faculty managers - as well as the research sector.

Author : Anonim
Publisher : Unknown
Page : 498 pages
File Size : 44,8 Mb
Release : 1979
Category : Astrophysics
ISBN : UOM:39015034725047

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Meteorological and Geoastrophysical Abstracts by Anonim Pdf

Covering the world's literature on meteorology, climatology, atmospheric chemistry and physics, physical oceanography, hydrology, glaciology, and related environmental sciences.