نام فایل : فصل 7 مشخصات و هندسه عکس قائم

فرمت : .ppt

تعداد صفحه/اسلاید : 46

حجم : 2 مگابایت

بنام خدا
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فصل 7 : مشخصات و هندسه عکس قائم
45 Slide
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Definitions
Vertical photograph – photo taken with the optical axis coinciding with the direction of gravity
Tilted photograph – photo taken with the optical axis unintentionally tilted from the vertical by a small amount, usually less that 3°
Near vertical photo
Exposure station – space position of the front nodal point at the instant of exposure
Flying height – elevation of exposure station above sea level or datum
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DEFINITIONS (cont.)
x-axis of the photograph – line on photo between opposite fiducials which most nearly parallels the direction of flight
y-axis – line on photo normal to x-axis with positive being 90° counter-clockwise from +x
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Coordinate System Using Corner FIDUCIALS
x’, y’ coordinates – arbitrary


where


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Scale Over Flat Terrain
Utilizing similar triangles

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SCALE OVER FLAT TERRAIN (Example)
Example: Vertical photo taken over flat terrain with 152.4 mm focal length camera at a height of 1830 m above ground. What is the photo scale?
Solution:
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