Proceedings of the Symposium on Global and Environmental Monitoring: Proceedings of the Symposium on Global and Environmental Monitoring

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Persistent identifier:: 856665355

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts ; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856665355

Language:: English

Document type:: Multivolume work

Volume

Persistent identifier:: 856669164

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Scope:: XIV, 912 Seiten

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856669164

Illustration:: Illustrationen, Diagramme, Karten

Signature of the source:: ZS 312(28,7,1)

Language:: English

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

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

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:: Volume

Collection:: Earth sciences

Chapter

Title:: [WP-4 INTERPRETATION AND MODELLING]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: THE POSSIBILITIES OF NEW OPTICAL SYSTEMS FOR MONO-AND STEREO-INTERPRETATION OF AERIAL PHOTOS AND SATELLITE IMAGES. STEEN, HARALD

Document type:: Multivolume work

Structure type:: Chapter

RK 820 Stereomicroscope with polaroid and tv-camera % Satellite image (orginal 1:400,000) - trinned area: 1:50,000, runway 2,750m; another trinned area of this, part of runway 1,000 m. The setting range of the zoom mark is 85 - 570 mm in X-direction and 316 mm in Y-direction (without measuring mark). By exchanging the front objective lenses you can vary the wor king height and thus the observation height of the stereomicros cope. However, a convenient observation of the image is guaran teed, i.e. first of all you can turn the eyepieces upwards and downwards and secondly - as already mentioned - you can adjust the head tilt of the eyepiece. Furthermore, the optical axes of the eyepieces are slightly tilted outwards to enable a more convenient observation. A squint defect correction in the right beam path balances a possible eye defect on the part of the evaluator. After these optical details maybe the most important informa tion on the RK 820 for the evaluator: ■ Of course, the equipment enables an observation in stereo. A mono observation is possible both through the left and the right zoom arm whereby you can switch by means of the single operator button. The "superimposition" is a special feature! The effect is that the observator can see the left and the right image with both eyes at the same time in the super imposition in appropriate deviations. This is a very useful option in every case e.g. when the scales slightly deviate from each other or when it is difficult to make a stereo adjustment of the image pairs. The final advantage of the RK 820 is that you can reflect an ad ditional variable measuring mark into the right light path. Another advantage is the image reversion making work much easier especially when processing black-and-white material. You do not permanently have to reorient the different grey levels since the image is available as a positive. Otherwise, the evalua tor must have some experience and the corresponding powers of imagination to evaluate and interpret the negative material without any difficulty since on the black-and-white negative everything is in reverse order. It is often difficult to reorient from black-and-white to white-and-black due to the numerous grey 455

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fullscreen: Proceedings of the Symposium on Global and Environmental Monitoring (Part 1)

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