VIIIth International Congress of Photogrammetry: General reports

Fagerholm, P. O.; Lycken, L. E.; Thunberg, A.; Öhlin, K. A.

Bibliographic data

Multivolume work

Persistent identifier:: 1048861678

Title:: VIIIth International Congress of Photogrammetry

Sub title:: Stockholm, Sweden, July 17 - 26, 1956

Year of publication:: 1957

Place of publication:: Stockholm

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 1048861678

Language:: English

Other Title:: Paralleltitel: VIIIe Congrès International de Photogrammétrie

Editor:: Fagerholm, P. O.

Corporations:: International Congress of Photogrammetry, 8., 1956, Stockholm; Board of the VIIIth International Congress of Photogrammetry

Adapter:: International Congress of Photogrammetry, 8., 1956, Stockholm; Board of the VIIIth International Congress of Photogrammetry

Founder of work:: International Congress of Photogrammetry, 8., 1956, Stockholm; Board of the VIIIth International Congress of Photogrammetry

Other corporate:: International Congress of Photogrammetry, 8., 1956, Stockholm; Board of the VIIIth International Congress of Photogrammetry

Document type:: Multivolume work

Volume

Persistent identifier:: 1048997715

Title:: General reports

Sub title:: VIIIe Congrès International de Photogrammétrie

Scope:: circa 330 Seiten in verschiedenen Seitenzählungen

Year of publication:: 1957

Place of publication:: Stockholm

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 1048997715

Illustration:: Illustrationen

Signature of the source:: ZS 312(12,3)

Language:: French

Other Title:: Paralleltitel: Rapports généraux

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

Contributor:: Lycken, L. E.; Thunberg, A.; Öhlin, K. A.

Editor:: Fagerholm, P. O.

Corporations:: International Congress of Photogrammetry, 8., 1956, Stockholm; Board of the VIIIth International Congress of Photogrammetry

Adapter:: International Congress of Photogrammetry, 8., 1956, Stockholm; Board of the VIIIth International Congress of Photogrammetry

Founder of work:: International Congress of Photogrammetry, 8., 1956, Stockholm; Board of the VIIIth International Congress of Photogrammetry

Other corporate:: International Congress of Photogrammetry, 8., 1956, Stockholm; Board of the VIIIth International Congress of Photogrammetry

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:: REPORT OF COMMISSION VII PHOTOGRAPHIC INTERPRETATION to the INTERNATIONAL SOCIETY OF PHOTOGRAMMETRY STOCKHOLM, SWEDEN JULY, 1956

Document type:: Multivolume work

Structure type:: Chapter

Section

Title:: Report of Commission VII (Photographic Interpretation) to the International Society of Photogrammetry CHARLES G. COLEMAN, President, Commission VII [...] AND EARL J. ROGERS, Secretary, Commission VII [...]

Document type:: Multivolume work

Structure type:: Section

G VI 1-4 PHOTOGRAMMETRIC ENGINEERING Source Materials for the Photographic Interpreter Developments in cameras and photography are the responsibility of other commissions of the International Society. Therefore only brief mention will be made of the effects of a few recent developments on photographic interpreta tion. 1. ADVANCES IN CAMERAS AND EMULSIONS During the past four years there had been considerable progress toward the providing the high quality photography needed for detailed interpretation. Of particular interest has been the steady advance toward higher-speed, finer- grain emulsions. In general, it may be said that, with the lenses and films now available, image clarity and sharpness appear no longer to be the major limiting factors in interpretation. It might also be noted that certain of the thorny prob lems which still plague the photogrammetrist (such as stabilization of cameras, and the lack of film flatness) are of somewhat less moment to the photographic interpreter. 2. ADVANCES IN PHOTO-PROCESSING AND PHOTO-MATERIALS There have been a number of developments in the photographic field which are being used to advantage in photographic interpretation work. A few are cited briefly below: a. The development of automatic-dodging printers: While quite new, the elec tronic type of printer has demonstrated that it can produce materials of the tonal gradations and contrast best suited to photographic interpretation. Since tone and contrast are important clues in the interpreter’s problems, the value of such controlled printing should not be underestimated. b. Increased use of “dry” (diazo-type) reproduction equipment in photographic interpretation work: By simply and rapidly reproducing annotated photographs, overlays, and report materials, this equipment enables the interpreter to dis seminate the results of his work in graphic form, rapidly and efficiently to the user. c. Development of special plastic bases for photographic mosaics and photo graphs: Now being used are photo bases serving both as direct viewing positives and reproducibles. Mosaics or prints reproduced on this material can be viewed directly with reflected light, marked on with ordinary pencil (which can then be erased), viewed over light tables as positive transparencies, and placed in a printer for reproduction of a duplicate negative. Expanded use of these prod ucts may contribute greatly to the flexibility of the photography or photo-map as a base for planning and operations in many fields. Photographic Interpretation Equipment summary The basic tools of the photographic interpreter are still the stereoscope, the magnifier, and the measuring scale. Depending on the individual and the type of interpretation he performs, the interpreter may also employ a variety of other aids and instruments. The period 1952 to 1956 was one of increasing emphasis on photographic equipment of all types. TRENDS The following apparent trends were noted: 1. Apparently a greater utilization, in photographic interpretation work, of photogrammetric-type equipment, such as stereo-plotters, comparators,

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