Coded Aperture Pairs for Depth from Defocus and Defocus Deblurring

  title={Coded Aperture Pairs for Depth from Defocus and Defocus Deblurring},
  author={Changyin Zhou and Stephen Lin and Shree K. Nayar},
  journal={International Journal of Computer Vision},
The classical approach to depth from defocus (DFD) uses lenses with circular apertures for image capturing. We show in this paper that the use of a circular aperture severely restricts the accuracy of DFD. We derive a criterion for evaluating a pair of apertures with respect to the precision of depth recovery. This criterion is optimized using a genetic algorithm and gradient descent search to arrive at a pair of high resolution apertures. These two coded apertures are found to complement each… CONTINUE READING
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