Sabtu, 10 Januari 2009

Types of aerial photographs


Low Oblique Photograph

This is a photograph taken with the camera inclined about 30° from the vertical (Figure 8-3, and Figure 8-4). It is used to study an area before an attack, to substitute for a reconnaissance, to substitute for a map, or to supplement a map.


A low oblique photograph has the following characteristics:
:It covers a relatively small area.
:The ground area covered is a trapezoid, although the photo is square or rectangular.
:The objects have a more familiar view, comparable to viewing from the top of a high hill or tall building.
:No scale is applicable to the entire photograph, and distance cannot be measured. Parallel lines on the ground are not parallel on this photograph; therefore, direction (azimuth) cannot be measured.
:Relief is discernible but distorted.It does not show the horizon


2 ulasan:

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melakaplanter berkata...

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