Fisheye Lens Distortion Correction Based on an Ellipsoidal Function Model

With the purpose of correcting the severe distortion in fisheye images captured by fisheye lens, an ellipsoid function model for fisheye lens correction is proposed. Firstly, an ellipsoidal function model need to be built. Secondly, based on this model, make preliminary correction to the fisheye images. Finally, adjust the parameters in the ellipsoidal function model to apply amendment to the images for better corrected results. Experiments with real circular fisheye images and elliptic fisheye images show that the correction model is feasible and effective.