ESM 266: Photogrammetry

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ESM 266 Photogrammetry

• Jeff Dozier

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Typically an application for aerial photography
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Aerial photography block
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Example from textbook

• Jensen photos of Columbia SC

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Photo 4-5 from previous slide
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Geometry of an image over flat terrain
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Detailed geometry over flat terrain
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Enlargement of part of an air photo
Jensen, 2000
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Detailed geometry over variable terrain
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Height inferred from relief displacement
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Example height from relief displacement
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Height inferred from shadow length
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Example height inferred from shadow length
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Principle of stereoscopic vision

• Definition of parallactic angle

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Stereoscopic viewing of air photos
Jensen, 2000
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Jensen, 2000
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Stereophotogrammetry
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Parallax equation
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Example from condominium building in Colombia, SC
Fiducial line from Photo 4-5
Fiducial line from Photo 4-4
Jensen, 2000
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Photogrammetry most effective with sharp edges
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(this is not a photo)