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Title: Algebraic lens distortion model estimation
Authors: Alvarez, Luis 
Gomez, Luis 
Sendra, Rafael
UNESCO Clasification: 220990 Tratamiento digital. Imágenes
120602 Ecuaciones diferenciales
120601 Construcción de algoritmos
120326 Simulación
Keywords: Lens distortion
Wide-angle lens
Hough tansform
Line detection
Issue Date: 2011
Journal: Image Processing On Line 
Abstract: A very important property of the usual pinhole model for camera projection is that 3D lines in the scene are projected to 2D lines. Unfortunately, wide-angle lenses (specially low-cost lenses) may introduce a strong barrel distortion, which makes the usual pinhole model fail. Lens distortion models try to correct such distortion. We propose an algebraic approach to the estimation of the lens distortion parameters based on the rectification of lines in the image. Using the proposed method, the lens distortion parameters are obtained by minimizing a 4 total-degree polynomial in several variables. We perform numerical experiments using calibration patterns and real scenes to show the performance of the proposed method.
ISSN: 2105-1232
DOI: 10.5201/ipol.2010
Source: Image Processing On Line [ISSN 2105-1232], v. 1, p. 1-10, (2011)
Appears in Collections:Artículos
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