Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

Damen, M. C. J.

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Multivolume work

Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856343064

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: XV, 547 Seiten

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856343064

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,1)

Language:: English

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

Editor:: Damen, M. C. J.

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:: 1 Visible and infrared data. Chairman: F. Quiel, Liaison: N J. Mulder

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Space photomaps - Their compilation and peculiarities of geographical application. B. A. Novakovski

Document type:: Multivolume work

Structure type:: Chapter

61 ¡metric proces- . The latter ac- when orthopho- photomaps are Loguephotogram- fsis of the se- fcore influen- э remote een- Dartography on bital photo-ex photographs £F-6 earners du- commander V.F. V. Aksyonov, 15- s stated in se- 978, Новаковский, ge,1982) the arities of the ssibilities for graphy (especi- photoimages and purposes. practical aspec- e instance of rbital stereo- aken by the "3o- the south-eas- ley and north- y mountain sys- -Fergana physi- Alay valley and mir region). Ex- arried out on hotogrammetric stereomaps: or- tereograph SC-1 >hot-B (GDR). Lg space ortho- th this modern ;he theoretical lues, merits and it, itself, ana- i results etc. research (see, !3, Балашов, ,1984) . Within we shall consi- itogrammetric 'es including ;omap . That would )blem of its di- )us morphometric rsis. The drawing ) 000 scale) on lucted after the vas obtained with )t-B (Новаковский, i approximately )00 initial spa- 31. Drawing was Ltional stereo- 3 isolines on эf mountainous intervals, or 3 etc.) are used, the isolines i3 steep slopes ches no longer map'в scale ) . solines may be olines (worth я interrupted, has demonstrated chnique of dra- interval are in- ay area, becau- fully cover the photoimage itself, greatly reducing the in formative value of the orthophotoimage. Ta king into account the detailed analysis of space photographs accuracy and pattern of their stereophotogrammetric processing, this and also great slope gradients of a mountain area dictate the expediency of ac cepting bigger interval of cros-'&ections. With experimental purposes the interval ac cepted for SC-1 proceseing was 200 m, and for the Topocart - 250 m. Fragments of the main component parts of a space photomap for a section of the Pamiro-Alay area are presented by figures 1 and 2. photographic features of the locality. While developing methods of photomap ap plication one should note two ways broade ning the possibilities of their use in geo graphical research: 1) a correlated inter pretation of the photoimages and an analy sis of their thematic contents,* 2) a cor rection and refinement of the derivative maps on the basis of the initial photocar- tographic image. The first way is rather evident. The jo int study of the cartographic and the pho tographic images allow the performance of a constant visual correlation of the photo Figure 1. Space orthophotoimage of a frag ment of Pamiro-Alay area. Fig.1 is a space orthophotoimage while Fig. 2 - gypsometric picture of the territory. One can see that the accepted interval bet ween the isolines prevents their merging and allows for preserving the informativity of the orthophotoimage and representing all the forms of high-mountain relief correct ly. It should be noted that the drawing of relief was corrected on the basis of oro graphic scheme also stereophotogrammetri- cally compiled from space photographs. In certain cases we afforded slight shifts of isolines to approximately 0.5 of the inter val for the purposes of greater expressive ness and geographical plausibility of the picture. The main stages of producing the 1:500 000 photomap of the Pamiro-Alay area through the Topocart-Orthophot-B complex were as follows: obtaining an orthophotoimage, com piling an orographic schematic map, produ cing a relief original, image interpreting in the process of stereodrawing of lands cape elements (such as spatial distributi on of glaciers), imprinting isolines into the orthophotoimage and general design of the map. The method printing isolines pro viding for high quality of the photomap was accepted. The printing form was derived di rectly from the gypsometric original, after that the picture of relief was printed in to the orthophotoimage in brown paint. The procedure preserved all the photographic details raising at the same time, the data content of the map due to pseudovolumetric gypsometric image effect and structural image indicative elements and the thematic contents of photomaps. Thus, the photogra phic featues are further corroborated and "strengthened" by the hydrographic network pattern, topographic features etc. which makes the analysis more reliable. The stu dy of photomaps unveils such topographic and landscape, features, as well as, the details of configuration and structure that cannot be noticed in separate analysis of maps and photographic images. The use of photomaps assigns a greater importance to the indicative approach which allows studying phenomena by their exteri or, indirect manifestations. Photomaps ma ke it possible to reveal the latent quali tative data on phenomena and processes fix ed in their morphological features to a ful ler extent. Photomaps rather than maps and photographic images facilitate the defini tion of the structure of the orographic and hydrographic elements, their configuration, mutual orientation, combinations etc. Besi des, photamap8 make it easier to bring out the background factors, typical of the gi ven territory and the abnormal deviations arising out of the local regularities. The good prospects for simultaneous analysis of horizontal and altitudinal anomalies of re lief should be emphasized too. Another feature of photomap application lies in the possibility of their use to re fine the derivative morphometric, correlai, tive and other maps (see, for instance fig. 3-6). The image phototone and texture al low a more precise determination of the

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