Photogrammetry as a research tool Greg Burgess DERF November 2008.
-
date post
20-Dec-2015 -
Category
Documents
-
view
217 -
download
1
Transcript of Photogrammetry as a research tool Greg Burgess DERF November 2008.
![Page 1: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/1.jpg)
Photogrammetry as a research toolPhotogrammetry as a research tool
Greg BurgessGreg Burgess
DERF November 2008DERF November 2008
![Page 2: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/2.jpg)
Measurement of direction from an imageMeasurement of direction from an image
![Page 3: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/3.jpg)
Photographic determination of the Photographic determination of the coordinates of a pointcoordinates of a point
Fig
ure
: G
eo
de
tic S
erv
ice
s In
cF
igu
re:
Ge
od
etic
Se
rvic
es
Inc
![Page 4: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/4.jpg)
Photographic determination of the Photographic determination of the coordinates of many pointscoordinates of many points
Fig
ure
: G
eo
de
tic S
erv
ice
s In
cF
igu
re:
Ge
od
etic
Se
rvic
es
Inc
![Page 5: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/5.jpg)
Camera positionsCamera positions
![Page 6: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/6.jpg)
Camera calibrationCamera calibration
Camera parameters to Camera parameters to determine:determine:
Principal distancePrincipal distance Principal point locationPrincipal point location Lens distortionsLens distortions
![Page 7: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/7.jpg)
Archaeological photogrammetryArchaeological photogrammetryIm
ag
e o
f th
e M
ed
ina
of
Fe
s, M
oro
cco
, p
roce
sse
d u
sed
TIP
HO
N s
oft
wa
re,
M K
oe
hl
Ima
ge
of
the
Me
din
a o
f F
es,
Mo
rocc
o,
pro
cess
ed
use
d T
IPH
ON
so
ftw
are
, M
Ko
eh
l
![Page 8: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/8.jpg)
Mirror panel mould photogrammetryMirror panel mould photogrammetry
![Page 9: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/9.jpg)
Mirror panel photogrammetryMirror panel photogrammetry
![Page 10: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/10.jpg)
![Page 11: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/11.jpg)
A very big dish…A very big dish…Im
age c
ourt
esy
of
the N
AIC
- A
reci
bo
Image c
ourt
esy
of
the N
AIC
- A
reci
bo
Obse
rvato
ryO
bse
rvato
ry
![Page 12: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/12.jpg)
SG4 jigSG4 jig
![Page 13: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/13.jpg)
SG4 jigSG4 jig
![Page 14: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/14.jpg)
Photo
: J Pre
ston
Photo
: J Pre
ston
![Page 15: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/15.jpg)
Photo
: J Pre
ston
Photo
: J Pre
ston
![Page 16: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/16.jpg)
Photo
taken b
y s
om
eone w
ho is
less
afr
aid
of
heig
hts
than m
ePhoto
taken b
y s
om
eone w
ho is
less
afr
aid
of
heig
hts
than m
e
![Page 17: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/17.jpg)
Jig with retro-reflective targetsJig with retro-reflective targets
![Page 18: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/18.jpg)
Vision Measurement System (VMS)Vision Measurement System (VMS)
![Page 19: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/19.jpg)
Problems…Problems…
Principal point instabilityPrincipal point instability
Principal point dependence on camera roll angle
-0.28
-0.26
-0.24
-0.22
-0.20
-0.18
0.05 0.10 0.15 0.20 0.25
PPx (mm)
PP
y (m
m)
-90˚ 0
90˚
![Page 20: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/20.jpg)
Problems…Problems…
DewDew
![Page 21: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/21.jpg)
FSJ4 1 Oct 2008 resultsFSJ4 1 Oct 2008 results
Estimated measurement accuracy:Estimated measurement accuracy:
σσx & x & σσy ≈ 0.5 mm, y ≈ 0.5 mm, σσz = 0.35 mmz = 0.35 mm
RMS height deviation of mounting points from the RMS height deviation of mounting points from the ideal paraboloid: ideal paraboloid: σσh = 0.56 mmh = 0.56 mm
Internal measurement precision: 1:230,000Internal measurement precision: 1:230,000
![Page 22: Photogrammetry as a research tool Greg Burgess DERF November 2008.](https://reader035.fdocuments.in/reader035/viewer/2022062407/56649d445503460f94a211cd/html5/thumbnails/22.jpg)
Pho
to:
M S
hort
is