Accurate Camera Calibration Robust to Defocus Using a Smartphone

@article{Ha2015AccurateCC,
  title={Accurate Camera Calibration Robust to Defocus Using a Smartphone},
  author={Hyowon Ha and Yunsu Bok and Kyungdon Joo and Jiyoung Jung and In-So Kweon},
  journal={2015 IEEE International Conference on Computer Vision (ICCV)},
  year={2015},
  pages={828-836}
}
We propose a novel camera calibration method for defocused images using a smartphone under the assumption that the defocus blur is modeled as a convolution of a sharp image with a Gaussian point spread function (PSF). In contrast to existing calibration approaches which require well-focused images, the proposed method achieves accurate camera calibration with severely defocused images. This robustness to defocus is due to the proposed set of unidirectional binary patterns, which simplifies 2D… CONTINUE READING

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