XVIIIth Congress: XVIIIth Congress

Kraus, Karl; Waldhäusl, Peter

Bibliographic data

Multivolume work

Persistent identifier:: 1667435949

Title:: XVIIIth Congress

Sub title:: Vienna, Austria 1996

Year of publication:: 1996

Place of publication:: Vienna

Publisher of the original:: Austrian Society of Surveying and Geoinformation

Identifier (digital):: 1667435949

Language:: English

Editor:: Kraus, Karl; Waldhäusl, Peter

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Document type:: Multivolume work

Volume

Persistent identifier:: 1667438379

Title:: XVIIIth Congress

Scope:: 449 Seiten

Year of publication:: 1996

Place of publication:: Vienna

Publisher of the original:: Austrian Society of Surveying and Geoinformation

Identifier (digital):: 1667438379

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(31,B2)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist anhand des Copyrightjahrs ermittelt.

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

Editor:: Kraus, Karl; Waldhäusl, Peter

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis

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:: Volume

Collection:: Earth sciences

Chapter

Title:: RECENT DEVELOPMENTS IN DIGITAL PHOTOGRAMMETRIC SYSTEMS FROM LEICA-HELAVA DSW 1 Alex Dam [...] A. Stewart Walker [...]

Document type:: Multivolume work

Structure type:: Chapter

RECENT DEVELOPMENTS IN DIGITAL PHOTOGRAMMETRIC SYSTEMS FROM LEICA-HELAVA DSW 1 Helava Alex Dam peak ir System Engineer, Helava Associates, Inc., USA PC. At image A. Stewart Walker hardwe Product Manager Digital Photogrammetry, Leica AG, USA maturi; would Commission II, Working, Group II/5 um, bu photog image KEY WORDS: Digital Photogrammetric Systems, Softcopy, Status, Scanner, Triangulation, DEM/DTM, kept to Orthoimage, Feature Extraction. as the to the altoget ABSTRACT contait mount: Leica digital photogrammetric systems by Helava consist of the new DSW300 Digital Scanning Workstations and the a liveh DPW670 and DPW770 Digital Photogrammetric Workstations, which are monoscopic and stereoscopic respectively and are offered on a range of hardware platforms. Since the 1992 Congress, these systems have become established as 2.2 Di leading, contenders in today's busy market-place. The innovative roll film transport of the DSW300 complements the elements of the earlier DSW200 which have been retained owing to their highly satisfactory performance over the past Soon ; two years. The scanning software has been extended to include operations for the operation of the roll film as well as perfori improvements on the DSW200 functionality. The standard software of the DPWs, SOCET SET®, has undergone a introdi host of improvements during the quadrennium and has migrated across a number of hardware platforms, requiring a SPAR! diversity of graphics sub-systems for stereoscopic viewing. The major innovations include full 24 bit colour in all increa: operations, automated aerial triangulation and much enhanced mosaicking. Equally exciting progress has been made to prc on the feature extraction side: several packages are available, including excellent DPW implementations of the well resolu known ATLAS and PRO600/MicroStation. Some of these now include automated tools which have been shown not using only to give noticeable increases in productivity but also to reduce fatigue. GIS packages available on-line include design GeoCity and System 9. The customer base has become exceedingly broad and includes private sector, local and state the co government, national mapping and military segments. Commercial pressures have fostered the growth of bureaux stage), services, especially for photo processing and scanning, and have encouraged many companies to promote heavily their quality digital orthophoto capabilities. The future will feature migration to other popular platforms as well as profound (later productivity benefits in feature extraction and project management. Sophis nct the he 1. INTRODUCTION projects in the late 1980s. Naturally, the scanners reflect image the state of both technology and digital photogrammetry becam | Technological improvements and competitive pressures, ^ over the years. The very first, military scanner used a introd | coupled with evolving, heavy demands from a linear array, but all subsequent models have been based perfor 2T knowledgeable and competent customer base, have on area array CCD technology (Table 1). scanni | forced development in digital photogrammetry to able | proceed apace in a variety of directions. The Leica Model Host Production mappl | digital photogrammetric systems by Helava have been [DCCS MicroVAX 1987-91 works | successful during the period 1992-96, primarily through HAI-100 $0386 PC 1990-91 buoya | sound initial designs for the various product, coupled DSW 100 | 80486 PC 1991-94 : | i illingness to respond to change in computer : This with uwilfingo ; DSW200 | SPARCstation 208X, 1994-96 hardware and customers’ needs. These systems are well funda documented: the evolution from the military systems of DSW300 x : — e EN 1996 have the 1980s has been described by Helava (1991) and Hal Creator v ode - perfor Miller, Helava and Devenecia (1992). The status at the : used 1992 Congress was reported by Miller, Thiede and Table 1. Evolution of the scanners quar Walker (1992), with updates by Miller and Walker senst (1993, 1995). There is also a wealth of accounts by users. 2.1 HAI-100/DSW 100 (from The goal here is to outline the changes during the last impre four att but the emphasis is on the features and The CCS NON À D stem for SURE autora d 0 bonefité a Imo current systems, DEC MicroVAX host (Helava, 1987), but the first true from scanner was the HAI-100, based on an Intel 80386 PC. and s 2.0 SCANNING RETROSPECTIVE AND UPDATE This performed interior orientation and then resampled area « > images rectified to photo space, to facilitate immediate also ; The last four years in the image scanner industry have stereoscopic viewing and epipolar correlation processes impre been exciting, for both hardware and software. As one of for automatic DTM generation. The scan times were to 1n the digital photogrammetric industry leaders, Helava and extraordinarily long (two hours for a 25 um image) by robus Leica have been in the forefront of these changes. Helava today’s standards, but that was still fast enough to keep mode was an early entrant in the scanner business and is now UP with the competing products since they were slow too array entering into the third generation of its scanner product and the image preparation work performed by the HAI- Large 100 was appreciated by customers. It was renamed the mark line, which began as a commercialisation of military 66 International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B2. Vienna 1996

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