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Photogrammetry in Geophysics: Obtaining Reliable Measurements and Maps

Explore the science, art, and technology of photogrammetry in geophysics to derive accurate measurements, maps, and digital elevation models from photographs. Learn about horizontal distance, relief displacement, and parallax in obtaining heights and angles.

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Photogrammetry in Geophysics: Obtaining Reliable Measurements and Maps

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  1. 사진측량Photogrammetry 강원대학교 지구물리학과 이훈열 교수 Ref: Lillesand and Kiefer, Remote Sensing and Image Interpretation, 3rd ed., Chapter 4.

  2. Photogrammetry • The science, art, and technology of obtaining reliable measurements, maps, digital elevation models, and other derived products from photographs. • Horizontal ground distance and angle • Heights from relief displacement • Heights from image parallax

  3. Geometry of Vertical Photograph From Loa and LOAA, OAA=(H-hA)xa/f From L’o’a’ and L’OA’A, OA’A=(H-hA)(-xa’)/f. Then, B=OAA+OA’A =(H-hA)(xa-xa’)/f L (Lense) L’ B (Base) f f b xa a’ xa’ Image plane o a b’ o’ Parallax: apparent change of position due to viewing point H pa=xa– xa’ OA OA’ A hA=H-Bf/pa OB OB’ B hA Similary, hB=H-Bf/pb hB hA-hB=Bf(1/pb-1/pa)

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