Actes du 7ième Congrès International de Photogrammétrie: Actes du 7ième Congrès International de Photogrammétrie

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Multivolume work

Persistent identifier:: 1048858235

Title:: Actes du 7ième Congrès International de Photogrammétrie

Sub title:: Washington, septembre 1952

Year of publication:: 1954

Place of publication:: Amsterdam

Publisher of the original:: Argus [u.a.]

Identifier (digital):: 1048858235

Language:: English

Other Title:: Paralleltitel: Proceedings of the 7th International Congress of Photogrammetry

Corporations:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Adapter:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Founder of work:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Other corporate:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Document type:: Multivolume work

Volume

Persistent identifier:: 104885955X

Title:: Actes du 7ième Congrès International de Photogrammétrie

Sub title:: Proceedings of the 7th International Congress of Photogrammetry

Scope:: circa 800 Seiten in verschiedenen Seitenzählungen

Year of publication:: 1954

Place of publication:: Amsterdam

Publisher of the original:: Argus u.a.

Identifier (digital):: 104885955X

Illustration:: Illustrationen

Signature of the source:: ZS 312(11,2)

Language:: French

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

Corporations:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Adapter:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Founder of work:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Other corporate:: International Congress of Photogrammetry, 7., 1952, Washington; American Society 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:: THE COMPILATION INSTRUMENT USING RECTIFIED PANORAMIC (OBLIQUE) PHOTOGRAPHS

Document type:: Multivolume work

Structure type:: Chapter

co- ese 10t he ed as Ve CD (379) for oblique trimetrogon photographs presented in a report at the Congress at The Hague, that pairs of rectified oblique photographs could be used stereos- copically. He supplied the basic ideas that accuracy is a function of the accu- racy of performing rectification of the obliques to a horizontal plane: in practice, it gives a correct planimetric rectification as far as the principal point of the oblique photograph and an altimetric rectification giving in a sense the relief valid locally with a correct equidistance of horizontal sections. The same report gives first the geometric principles that guided the con- struction of the apparatus; it discusses how these geometric principles were used in practice, in particular how the stereoscopic relief effect of elevated objects was exaggerated four times. It told also of the apparatus for viewing the photographs and concludes in indicating with interest what the instrument can offer for the rapid com- pilation of a provisional survey at 1/100,000, for example, in regions where the coverage with vertical photographs is insufficient to use ordinary map- ping methods. USE OF THE KELSH PLOTTER by Harry T. Kelsh, Photogrammetric Engineer. The advantages and limitations of the Kelsh type of double projection plotters and a resume of the applications of the instrument by various govern- mental and commercial organizations. All types of plotting instruments used in compiling maps from aerial pho- tographs are designed to furnish a means of setting up a three dimensional model representing a portion of the earth's surface, using as data the overlap- ping part of two successive aerial photographs and means for graphically recording any desired data appearing in the model. Since all plotters are designed for the same general purpose, then, within the limits set by our needs, or within the limts set by the quality of the data we must use, comparative economic evaluation of the results is more impor- tant than comparison of types of instruments based on personal preference. Such economic evaluation necessarily must take into consideration the original cost, the complexity of the instrument, for certain uses its portability, and relative operator training time necessary to permit the securing of satisfactory results. There is no question as to the excellent degree of accuracy attainable with well constructed plotters of the optical train type in the hands of skilled and experienced operators. But to date, the good features have been accom- panied by considerable complexity of design, lack of portability, and consider- able cost. Operator training time is usually conceded to be longer than on pro- jection type instruments. The double projection type plotter is much more simple in construction. It can be made reasonably portable. It is easier to use, and it is much less costly to manufacture. Is is not as flexible in operation in that ordinarily it does not

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