Sharing and cooperation in geo-information technology

Aziz, T. Lukman

Bibliographic data

Monograph

Persistent identifier:: 856479470

Author:: Aziz, T. Lukman

Title:: Sharing and cooperation in geo-information technology

Sub title:: ISPRS Commission VI Symposium, April 15 - 17, 1999, Bandung, Indonesia

Scope:: 1 Online-Ressource (130 Seiten)

Year of publication:: 1999

Place of publication:: London

Publisher of the original:: RICS Books

Identifier (digital):: 856479470

Illustration:: Illustrationen, Diagramme

Language:: English

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

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: WG VI/3: INTERNATIONAL COOPERATION AND TECHNOLOGY TRANSFER

Write comment:: Der Aufsatz "Promotion Of The General Understanding And Improvement Of Public Relations, [...] ist im Original nicht enthalten.

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: AUTOMATION IN PHOTOGRAMMETRY. David Collison

Document type:: Monograph

Structure type:: Chapter

International Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 6. Bandung-lndonesia 1999 AUTOMATION IN PHOTOGRAMMETRY David Collison General Manager: Mapping/GIS División Intergraph System South East Asia Pte.Ltd Singapore ABSTRACT Photogrammetry is today the core technology employed in the production of base maps. Given that photogrammetry is used in the compilation of 95% of base maps around the world it’s importance as a tool for primary data compilation cannot be ignored. From the very beginning photogrammetry systems were based on optics and mechanics however, since 1991 an entirely new generation of systems often called “softcopy” photogrammetry has emerged and are today in widespread use throughout the world. Softcopy systems are based on manipulating digital imagery. As this new software based technology emerged the industry base has migrated from its origins in Europe with their expertise in high quality optics and mechanics to north America with its pioneering computer hardware and software industry. Softcopy has ushered in the dawn of real automation for photogrammetry. Already today we are seeing systems capable of: • unattended scanning of aerial films • automatic aerotriangulation (auto at) • auto generation of DTI’s • auto mosaicking This paper outlines Intergraph’s industry leading role and today’s commercial softcopy systems with their high level of automation and productivity. 1. INTRODUCTION Photogrammetric techniques are the primary tools employed around the world for the compilation of base maps. Since 1957 for example, all operational maps produced by the us government have been derived photogrammetrically. So its importance as a tool for data acquisition to geographical information systems cannot be ignored. How does photogrammetry compare to other forms of primary data acquisition ? the other methods sometimes applied in creating topographic or base maps are: 1) GPS and total station field survey - which is best, suited for large scale, but small geographical areas with few specific features to be collected. Ability to quickly deploy and capture is a key advantage. 2) Map scanning and conversion - which provides a very low cost method of creating a digital map, but suffers from low accuracy and outdated information. When all other avenues are exhausted, a paper map can usually be provided. Photogrammetry provides an economical method of mapping large areas from up to date information in a relatively short time frame. The amount of information contained in aerial imagery is vast with most users making limited selects in what information id to be extracted. And now with the widespread acceptance of digital orthophotos this capture to map publication cycle time has decreased even further. Modem day photogrammetry dates back to the period after World War II when photographic film aerial cameras and analog stereo plotter systems became commercially available. These systems were based on precision optics and mechanics and have remained largely unchanged for decades. Since 1991 an entirely new generation of systems called “softcopy” photogrammetry has emerged and is today in widespread use throughout the world. Its now also appropriate to consider the science of photogrammetry not just limited to film aerial photography, but extending to satellite and digital imaging sensors systems too. Softcopy systems are based on manipulating digital imagery. As this new software based technology emerged the industry has migrated from its origins in Europe with their expertise in high quality optics and mechanics to North America with its high technology focus of electronics, hardware and software industries. The first real automation advancement in photogrammetry was the introduction of analytical stereo plotters in the mid 1970’s. Their dedicated computer hardware and software systems - often highly proprietary, could drive the photo carriages to a point whilst the operator made an observation such as removing Y-parallax or setting the floating mark on the surface. Then in the mid 1980’s along came the personal computer (PC) and computer aided design (CAD) software that could be interfaced to the analytical and

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