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:: [THA-1 SECOND PLENARY SESSION]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: DETECTION AND REGISTRATION BY SPACE PHOTOGRAPHS OF CHANGES IN THE FOREST FUND AREAS CAUSED BY SEVERE FIRES AND CLEAR CUTTINGS. R. I. Elman, M. D. Breido

Document type:: Multivolume work

Structure type:: Chapter

DETECTION AND REGISTRATION BY SPACE PHOTOGRAPHS OF CHANGES IN THE FOREST FUND AREAS CAUSED BY SEVERE FIRES AND CLEAR CUTTINGS R.I. Elman, M.D. Breido UNIITslesresurs, Moscow, USSR ABSTRACT Programme technology of the automated detection, registration and assessment by space photographs of changes in the forest fund areas caused by severe fires and clear cuttings is considered. The technology is based on the combining in the automated regime the space photograph with the cartographic and forest mensuration data bases. It allows to timely determine the characteristics of each homogeneous plot of the image and to use them for the two-stage photointerpretation. On the first stage the survey fragment of the photograph is interactively analysed in order to quickly extract the areas, gone by fires, and clear cuts. Then the extracted plots of the photograph are accurately connected to the cartographic topo-base and are viewed under the "magnifying glass" in order to get data about the location and the size of cuts and burnt areas. By way of automatic comparison of contours of burns and cuts of the past assessment periods which are stored in the cartographic base, with contours of these areas extracted by the space photograph, places of newly appeared cuts and burns are determined. On the final stage the actualization of the cartographic and forest mensuration data bases is done, and the observation of regulations is evaluated. Key Words: data base, space photograph, interpretation, extraction, registration, assessment, actualization INTRODUCTION Method of detection and registration of changes in the forest fund areas caused by severe fires and clear cuttings includes the preparatory stage, preliminary visual photointerpretation, input of the photograph into the system of interactive image processing, geometrical correction, interpretation, extraction of cutting contours and areas gone by forest fires, their rectification by control points into cartographic projection, area calculation and correction, forming of operative maps and output of final documents. The general functional diagram of the method is presented in Fig.l. The source data are materials of space photo and scanner photography obtained with the instruments of medium and high resolution, and also the digital cartographic base, combined on the programme and physical level with the forest mensuration base and used for topobase control, interpretation of photographs and presentation of results in the graphical form. Remote sensing data may be presented in the form of prints, dubbing negatives and records on magnetic tape in spectral bands of 0.6 - 0.7 micrometers, 0.8 -1.0 micrometers of medium resolution (175m on the ground), and in the bands of 0.6 - 0.7 micrometers, 0.8 - 0.9 micrometers of high resolution (45m on the ground). For the extraction of clear cuts also space photographs at scale 1:280000 with the ground resolution of not lower than 10 metres can be used. The basis for the digital cartographic base is forest management tablets and maps at scale 1:1000000 and 1:8000000. Preliminary work includes the creation of the digital topographic base, the base of control points, and collection of information about the planned areas of cuttings and centers of fires recorded by the aerial forest fire protection service. On the stage of preliminary interpretation by multitemporal photographs of medium resolution in the band of 549

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