![Page 1: Radial Distortion - Scientific Computing and Imaging Institutegerig/CS6320-S2015/Materials... · Radial Distortion magnification/focal length different for different angles of inclination](https://reader030.vdocuments.us/reader030/viewer/2022040910/5e83496e14831e4f36429bc0/html5/thumbnails/1.jpg)
Radial Distortion
magnification/focal length different for different angles of inclination
Can be corrected! (if parameters are know)
pincushion(tele-photo)
barrel(wide-angle)
![Page 2: Radial Distortion - Scientific Computing and Imaging Institutegerig/CS6320-S2015/Materials... · Radial Distortion magnification/focal length different for different angles of inclination](https://reader030.vdocuments.us/reader030/viewer/2022040910/5e83496e14831e4f36429bc0/html5/thumbnails/2.jpg)
Radial Distortion
magnification/focal length different for different angles of inclination
pincushion(tele-photo)
barrel(wide-angle)
![Page 3: Radial Distortion - Scientific Computing and Imaging Institutegerig/CS6320-S2015/Materials... · Radial Distortion magnification/focal length different for different angles of inclination](https://reader030.vdocuments.us/reader030/viewer/2022040910/5e83496e14831e4f36429bc0/html5/thumbnails/3.jpg)
Radial Distortion
magnification/focal length different for different angles of inclination
Can be corrected! (if parameters are know)
pincushion(tele-photo)
barrel(wide-angle)
![Page 4: Radial Distortion - Scientific Computing and Imaging Institutegerig/CS6320-S2015/Materials... · Radial Distortion magnification/focal length different for different angles of inclination](https://reader030.vdocuments.us/reader030/viewer/2022040910/5e83496e14831e4f36429bc0/html5/thumbnails/4.jpg)
Radial Distortion
http://foto.hut.fi/opetus/260/luennot/11/atkinson_6-11_radial_distortion_zoom_lenses.jpg
straight lines are not straight anymore
pincushion dist.
barrel dist.
![Page 5: Radial Distortion - Scientific Computing and Imaging Institutegerig/CS6320-S2015/Materials... · Radial Distortion magnification/focal length different for different angles of inclination](https://reader030.vdocuments.us/reader030/viewer/2022040910/5e83496e14831e4f36429bc0/html5/thumbnails/5.jpg)
![Page 6: Radial Distortion - Scientific Computing and Imaging Institutegerig/CS6320-S2015/Materials... · Radial Distortion magnification/focal length different for different angles of inclination](https://reader030.vdocuments.us/reader030/viewer/2022040910/5e83496e14831e4f36429bc0/html5/thumbnails/6.jpg)
Radial distortion
• Due to spherical lenses (cheap/wide angle)• Model:(following Tsai 1987 et al.):
rad
rad
yx
yxKyxKyx ...))()(1(),( 442
221R
ptR
KRp WC
WC
W
10,0,0
**z1 1
1
![Page 7: Radial Distortion - Scientific Computing and Imaging Institutegerig/CS6320-S2015/Materials... · Radial Distortion magnification/focal length different for different angles of inclination](https://reader030.vdocuments.us/reader030/viewer/2022040910/5e83496e14831e4f36429bc0/html5/thumbnails/7.jpg)
Radial distortion example
![Page 8: Radial Distortion - Scientific Computing and Imaging Institutegerig/CS6320-S2015/Materials... · Radial Distortion magnification/focal length different for different angles of inclination](https://reader030.vdocuments.us/reader030/viewer/2022040910/5e83496e14831e4f36429bc0/html5/thumbnails/8.jpg)
Radial distortion example
![Page 9: Radial Distortion - Scientific Computing and Imaging Institutegerig/CS6320-S2015/Materials... · Radial Distortion magnification/focal length different for different angles of inclination](https://reader030.vdocuments.us/reader030/viewer/2022040910/5e83496e14831e4f36429bc0/html5/thumbnails/9.jpg)
Radial distortion example
![Page 10: Radial Distortion - Scientific Computing and Imaging Institutegerig/CS6320-S2015/Materials... · Radial Distortion magnification/focal length different for different angles of inclination](https://reader030.vdocuments.us/reader030/viewer/2022040910/5e83496e14831e4f36429bc0/html5/thumbnails/10.jpg)
Useful Links
Demo calibration (some links broken):• http://mitpress.mit.edu/e-
journals/Videre/001/articles/Zhang/CalibEnv/CalibEnv.html
Bouget camera calibration SW:• http://www.vision.caltech.edu/bouguetj/
calib_doc/CVonline: Monocular Camera calibration:• http://homepages.inf.ed.ac.uk/cgi/rbf/C
VONLINE/entries.pl?TAG250