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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 20 — Sep. 24, 2012
  • pp: 22252–22261

Digital deformation model for fisheye image rectification

Wenguang Hou, Mingyue Ding, Nannan Qin, and Xudong Lai  »View Author Affiliations


Optics Express, Vol. 20, Issue 20, pp. 22252-22261 (2012)
http://dx.doi.org/10.1364/OE.20.022252


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Abstract

Fisheye lens can provide a wide view over 180°. It then has prominence advantages in three dimensional reconstruction and machine vision applications. However, the serious deformation in the image limits fisheye lens’s usage. To overcome this obstacle, a new rectification method named DDM (Digital Deformation Model) is developed based on two dimensional perspective transformation. DDM is a type of digital grid representation of the deformation of each pixel on CCD chip which is built by interpolating the difference between the actual image coordinate and pseudo-ideal coordinate of each mark on a control panel. This method obtains the pseudo-ideal coordinate according to two dimensional perspective transformation by setting four mark’s deformations on image. The main advantages are that this method does not rely on the optical principle of fisheye lens and has relatively less computation. In applications, equivalent pinhole images can be obtained after correcting fisheye lens images using DDM.

© 2012 OSA

OCIS Codes
(150.1488) Machine vision : Calibration
(080.1753) Geometric optics : Computation methods

History
Original Manuscript: June 1, 2012
Revised Manuscript: July 29, 2012
Manuscript Accepted: September 5, 2012
Published: September 13, 2012

Virtual Issues
Vol. 7, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Wenguang Hou, Mingyue Ding, Nannan Qin, and Xudong Lai, "Digital deformation model for fisheye image rectification," Opt. Express 20, 22252-22261 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-20-22252


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