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:: 1667437070

Title:: XVIIIth Congress

Scope:: 230 Seiten

Year of publication:: 1996

Place of publication:: Vienna

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

Identifier (digital):: 1667437070

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(31,B1)

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 Primary Data Acquisition

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 Primary Data Acquisition

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 Primary Data Acquisition

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 Primary Data Acquisition

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:: INCREASED IMAGE QUALITY RESULTING FROM NEW TECHNOLOGIES IN AERIAL CAMERAS Dipl.-Ing. Roland Schlienger, Co-authors: Peter Fricker, Arthur Rohrbach, Holger Schade

Document type:: Multivolume work

Structure type:: Chapter

inside y the effect critical ending or AV pectral "tween NAT-S ontrast oraphy where y and v time . 2412 ANSI f:5.6. ast 100:1 S with high- "ssible ighest ENS .10.95 assess uction th the ssured imera. Positioning and navigation of the aircraft over the nominal waypoints were realised with the Leica GPS MX 9212 which is an integral part of the Leica ASCOT / ACU30 Aerial Survey Navigation System. Test site Location Dimensions Type Used control points Type of points Flight data Aircraft type Flying height/gnd. Flying speed Mission data Nominal image scale Longitudinal overlap Buchs SG, Switzerland length 1.4 km, width 0.6 km flat terrain with residential, industrial and railway zones 100 to 122 mostly round man-hole covers on street Pilatus Porter PC-6 f= 153 mm: nominal 382 m f= 303 mm: nominal 762 m about 90 kts 1:2 500 70% Number of models 3x 1 strip with 8 models Film type Kodak Plus-X 2402 Filter Haze 420 nm Exposure time 1/100 s to 1/300 s (for f=153 mm) Aperture f:4 Restitution Photo material diapositive contact prints on Agfa Avitone P3p Equipment SD 2000 Analytical instrument Method independent models Magnification 18 fold Photogrammetric results Residuals on control points: Eastings + 1.5 cm Northings + 1.5 cm (flight nearly N-S and S-N) Height +3 cm These residuals are in the same magnitude as the accuracy of the geodetic coordinates. They correspond at image scale to x,y errors of + 6 microns and in altitude to 0,08 per thousand of the flying height above ground. These good results were achieved even for long exposure times (max. 1/100 s) and / or intentionally dis- turbed aircraft stability in terms of rotation angles pitch / roll / drift. Furthermore, first high-altitude flight tests with 15/4 UAG-S (with Panatomic-X 2412 emulsion) have already confirmed the high image quality and geometric accuracy, in flight conditions with less critical influence of both FMC and camera rotations. This opens new possibilities for small-scale mapping. CONCLUSIONS One of the major aims when developing the new generation of lens cones was to achieve full optical quality at maximum aperture f:4. This assures best imaging conditions for low- contrast targets. In small-scale missions the inherent capabilities of high-resolution films are enhanced. Also for large and 181 medium image scales, there is no need for a compromise between optimal aperture and short exposure time. Higher resolution makes it possible to fly at higher altitudes which reduces flying time and costs. On the other hand the possibility to fly in difficult light conditions thanks to high image quality at f14 increases profitability. This challenge of overcoming opposing physical conditions has been fulfilled with the new .9- lens generation together with the RC30 camera equipped with FMC and AMC. Acknowledgment: Dr B. Braunecker, Dr E. Mathieu, D. Gut and F. Zuberbühler for their valuable input and support in the preparation of this paper. References: References from Journals: Hildebrand, K, 1983. New generation Lens Systems for the Wild Aviophot Aerial Camera System. Photogr. Engin. and Remote Sensing, Vol. 49, N? 8, Aug. 1983. References from Wild / Leica publications: Schlienger, R., 1972. A new generation of Wild high- performance lenses for photogrammetry (ISP, Ottawa 1972). Tiziani, H, V.1978. Image quality criteria for aerial survey lenses. ISP Working Group I-1. ISP-Symposium, Commission I, Tokyo, May 1978. Gut, D. / Bock, F. / Schlienger, R, IV.1989. Test flight with FMC Camera Wild RC20. Gut, D. / Schlienger, R, 7.1992. Wild RC20 Testflights and Results. Test site Buchs, CH. New lens cone 15/4 UAG-S. Leica Practice report, 1994. ASCOT / GPS Testflight Buchs - July 23, 1993, Wild RC30 / Sercel. Leica Product information, XI.1995. Principle and benefits of the gyro-stabilized aerial camera mount Leica PAV30. Leica Product information, XII.1995. Test flight with the new lens cones Leica 30/4 NAT-S. International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B1. Vienna 1996

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