Systems for data processing, anaylsis and representation

Allam, Mosaad; Plunkett, Gordon

Bibliographic data

Monograph

Persistent identifier:: 1067490280

Title:: Systems for data processing, anaylsis and representation

Sub title:: ISPRS Commission II Symposium : June 6 - 10, Ottawa, Canada

Scope:: 1 Online-Ressource (XX, 530 Seiten)

Year of publication:: 1994

Place of publication:: Ottawa

Publisher of the original:: The Surveys, Mapping and Remote Sensing, Natural Resources Canada

Identifier (digital):: 1067490280

Illustration:: Illustrationen

Signature of the source:: ZS 312(30,2)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Allam, Mosaad; Plunkett, Gordon

Corporations:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Adapter:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Founder of work:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Other corporate:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: [Tuesday, June 7, 1994]

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: [Session E-1 Intercommission WG II/III- Digital Photogrammetric Systems - Part A]

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: PSEUDO-STEREO DIGITAL PHOTOGRAMMETRY Eugene E. Derenyi and Ying Chen

Document type:: Monograph

Structure type:: Chapter

PSEUDO-STEREO DIGITAL PHOTOGRAMMETRY Eugene E. Derenyi and Ying Chen* Department of Geodesy and Geomatics Engineering, University of New Brunswick P.O. Box 4400, Fredericton, N.B. Canada E3B 5A3 * Now at The Department of Geomatics Engineering, University of Calgary Calgary, Alberta, Canada T2N 1N4 Commission II, Intercommission Working Group II/III KEY WORDS: Digital photogrammetry, Image matching, GIS, Digital mapping. ABSTRACT À so called pseudo-stereo technique was developed for soft-copy mapping which allows spatial positioning without the need for stereo viewing or a digital elevation model. Digitization is performed monoscopically on the display screen of a computer graphics workstation in one of the images of a stereo pair. Corresponding points in the second image are located by area based least squares image matching. The object space coordinates are then computed by space intersection. A close initial approximation of the matching position is assured by enforcing the epipolar geometry as a constraint and by an a priori estimation of the elevation of the feature to be mapped. This mapping technique was successfully implemented and tested in a commercial geographic information system. 1. INTRODUCTION Soft-copy, digital photogrammetry is revolutionizing map compilation. The production of general purpose basic maps, such as the federal, provincial or municipal map series, will probably remain in the hands of professional mapping organizations in the foreseeable future. Natural resource inventory maps, thematic maps, special purpose maps, and alike can now be produced by professionals and technologists in various disciplines, who are also the users of these products. With the help of mapping software, these individuals can extract, in a computer graphics workstation, the information they need from digital images. Extensive knowledge in photogrammetry and cartography is no longer necessary. This desk top mapping is analogous to desk top publishing which is now widely applied. The first commercial versions of all-digital photogrammetric restitution instruments appeared in the 1980s, and several models were exhibited at the 1992 ISPRS Congress. Currently, the high performance workstations are rather expensive, and are affordable only by large organizations. There are also some technical problems to be overcome before soft copy images replace the diapositive. More powerful processors, larger and faster memories, higher resolution display screens, and the development of a CCD camera with a performance comparable to a cartographic aerial film camera are needed. Electronic technology is advancing at a rapid pace, thus it will not take all-digital photogrammetric systems thirty years to come to age, as was the case for the analytical plotters. In the meantime, attention should be focused on the so called secondary mapping operations like, resource inventory, thematic, customized mapping and map updating. Existing technology can serve these applications well, in a cost effective manner. Secondary mapping is performed under different conditions and requirements than primary basic mapping, in the following respects: * Planimetric information extraction is the main goal. 138 * Map than «Sec prim whic refer imag e Resc Seco be as The req copy mi summari * Allo unde users carto + Imag suffi mode stand + Meai integ existi The pse designed 2.1 The Monoscc images cartograz this ma; element « in a geo Thus, inf as ancill operatio informat existing f Image m schème photograi photogra; transferri maps in lucida pr. relief di anomalie

Access restriction

Copyright

fullscreen: Systems for data processing, anaylsis and representation

Monograph

Chapter

Chapter

Chapter

Table of contents

Cite and reuse

Monograph

Chapter

Image

Image fragment

Citation links

Citation recommendation