Project: Correction of Geometric Lens
Distortions
PEOPLE
OBJECTIVE
Calibration is the foremost operation in any vision task, which aims at reproducing the exact geometric structure of a scene. For convenience, the
acquisition device is usually modeled as a pinhole camera and the calibration of the camera entails the determination of the following parameters:
1) Extrinsic parameters: they describe the relationship between the camera reference system and the world reference system, including position and
orientation;
2) Intrinsic parameters: they describe the characteristics of the camera, including lens focal length, pixel scale factors, and location of the image
center;
3) Distortion parameters: they describe the geometric non-linearities of the camera and are typically rather conspicuous for low-cost lenses.
In this project, we are investigating the estimation of the parameters modeling the geometric distortions introduced by the lens. There are two main sources for these distortions: radial distortion, which causes the light rays to bend more or less than the correct amount, and de-centering, which causes a displacement between the ideal center of the lens and the optical axis.
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