VIIIth International Congress of Photogrammetry: General reports

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

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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:: French

Other Title:: 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:: 1 Online-Ressource (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:: Quantitative Evaluation of Photo Interpretation Mapping HAROLD E. YOUNG and ERNEST G. STOECKELER

Document type:: Multivolume work

Structure type:: Section

GVII-72 PHOTOGRAMMETRIC ENGINEERING statistical methods in evaluating geologic maps. It is the purpose of this paper to present the general procedures for evaluating photo interpretation in terms of the accuracy of the designation of a map unit, and the accuracy of the loca tion of the boundary lines between map units. Methods Descriptions of the map symbols, type of photography, soil type photo patterns and field checking methods have been omitted purposely to avoid complicating the presentation of procedures involved in the quantitative evaluation of photo interpretation and map accuracy. Principles and procedures will vary for different types of photo interpretation studies. The five general phases in the preparation of an engineering soils map* * of the Bangor Quadrangle, along with the collection of data necessary for the evaluation, are as follows: A. The making of a field reconnaissance with photos in hand to determine the significance of various soil patterns and photo elements in order to develop a set of diagnostic features. B. The delineation of soil type boundaries by photo interpretation in the office. C. The field checking of the soil type designations and the accuracy of the location of the boundary lines. D. The transference of photo detail to a base map. E. The spot checking of the map in the field to determine the accuracy of the final product. While in the field (Step C above) a record was maintained of the photo interpretation classification and the field classification of 449 sampling locations (Table II), and interpretation errors in designation and location of boundary lines were rectified. For this study, the number of areas of each soil type was Table I Engineering Soils Information, Bangor Quadrangle, Maine Map Unit Total Acreage Number of Areas Av. Acreage/Area R 14,050 493 28.5 BG 14,770 131 112.7 B 48,200 152 317.1 G 3,280 135 24.3 F 34,200 96 356.3 S 7,970 294 27.1 P 5,400 43 125.6 wt 6,630 11 602.7 134,500 1,355 t Signifies water which does not appear in other tables and in the discussion. counted and the acreage of each type was determined by use of a dot grid with 16 dots to the inch. Data for the Bangor Quadrangle, Maine, an area of 134,500 acres or approximately 210 square miles, are summarized in Table I. Map unit symbols represent soil types recognized in the Maine Reconnaissance Engineer ing Soils Classification System. Minimum area mapped for this study was five acres. * The Maine Reconnaissance Engineering Soils Classification System was developed by E. G. Stoeckler as a part of a photo interpretation project financed by the Maine State Highway Com mission in cooperation with the U. S. Bureau of Public Roads.

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