VIII INTERNATIONAL CONGRESS FOR PHOTOGRAMMETRY
STOCKHOLM 1956
Present Status of Photogrammetry in Japan.
By
MITIHARU TAKEDA
Geographical Survey Institute, Japan
The developments of the photogrammetric activities in our country in
these 4 years, are summarized as in the following topics.
a. Aerial photography has been resumed since we have recovered our in-
dependence in 1952.
Modern aerial cameras and stereoplotting instruments have been furni-
shed.
The method of aerial-photo interpretation is prevalent in preparing
1:50,000 Land Use Maps.
d. Studies have been made on application of aerial photogrammetry to sur-
veyings of high accuracy, i.e. the cadastral surveying etc.
e. Application of terrestrial photography has been extended to civil engi-
neering, i. e. surveying of dam site, etc.
Generally speaking, we have made efforts in the direction to fit remar-
kable post-war development in photogrammetric techniques.
1. Aerial Photography.
a. Aeroplanes.
Since 1952, the ban on the aerial photography is removed and several
private agencies are now in charge of aerial photogrammetry.
Types of aeroplanes now used for photogrammetric purposes are:
Douglas DC-3 (1); D.H. Dove (1); D. H.C. Beaver (2); Beachcraft D 18 S
(1); Auster-J5G (1); and Cessna, 195; 180, 170 B (2).
Since these are mostly light planes and the area covered by every photo-
flight is rather small, the aerial navigation is made usually by visual method.
Among the planes mentioed above, Cessnas are used mainly for flights over
flat terrains.
b. Aerial Cameras.
Modern cameras, such as Wild Rca-5 and Zeiss RMK 21/18, are imported
and they will turn the old fashioned cameras away owing to their excellent
qualities.