Photogrammetry 4 5 8 fiducial marks principal point

  • Slides: 19
Download presentation
사진측량학 Photogrammetry

사진측량학 Photogrammetry

집성사진(모자이크 ) 4 -5 모서리와 네 변의 중앙에 8개의 사진지표(fiducial marks) 가 있으며, 그

집성사진(모자이크 ) 4 -5 모서리와 네 변의 중앙에 8개의 사진지표(fiducial marks) 가 있으며, 그 교점을 주점(principal point)라고 함 Columbia, SC Original scale = 1: 6, 000 Focal length = 6” (152. 82 mm) March 30, 1993

측면을 이용한 건물 높이 측정 b’ a’ h H d = r h =

측면을 이용한 건물 높이 측정 b’ a’ h H d = r h = dx. H r o’ Negative f Principal point Exposure station, L d r Positive o a H r = 5. 66 cm d = 0. 33 cm H = 1000 m above local datum h = 58. 3 m local datum b B h PP A

Wheatstone’s Mirror Stereoscope Mirror a A B Screw d’ b

Wheatstone’s Mirror Stereoscope Mirror a A B Screw d’ b

L 2 Profile view of Photo 4 -4 Profile view of Photo 4 -5

L 2 Profile view of Photo 4 -4 Profile view of Photo 4 -5 한 건물높이 측 정 • b’ a’ a o b o A PP 4 -5 B B A-base 4 -5 Plan view of Photo 4 -5 PP 4 -5 Line of flight xb’ = -0. 267” PP 4 -4 A A-base 4 -5 3. 39” o Line of flight Plan view of Photo 4 -4 A-base 4 -4 3. 41” CPP 4 -5 CPP 4 -4 b’ b = base a’ a = top xa’ = -0. 270” b’ b a’ x = -3. 606” b a’ x a = -3. 820” pa = 3. 55” p = 3. 339” b o x b’ = -0. 267” x a’ = -0. 270” dp = 3. 55 - 3. 339” dp = 0. 211” x-axis PP 4 -4 d. Profile view of Photos 4 -5 and 4 -4 in superposition a o x b =-3. 606” x a = -3. 82” Superposition of Photos 4 -5, 4 -4 c. b. A-base 4 -4 Photo 4 -5 a. CPP 4 -5 CPP 4 -4 y-axis 입체시를 이용 L 1 e.

Methods of Measuring Stereoscopic x-parallax from Overlapping Aerial Photographs: • Measurement Using Fiducial Lines

Methods of Measuring Stereoscopic x-parallax from Overlapping Aerial Photographs: • Measurement Using Fiducial Lines (a, b) • Measurement Based on Superposition (c) PP 4 -5 Photo 4 -5 xa’ = - 0. 270” Fiducial line from Photo 4 -5 xb’ = - 0. 267” a. PP 4 -4 Photo 4 -4 xa = - 3. 82” Fiducial line from Photo 4 -4 xb = - 3. 606” b. Photo 4 -5 Photo 4 -4 pb = 0. 511” c. pa = 0. 30” c. dp = 0. 211”