Coded aperture pairs for depth from defocus

  title={Coded aperture pairs for depth from defocus},
  author={Changyin Zhou and Stephen Lin and Shree K. Nayar},
  journal={2009 IEEE 12th International Conference on Computer Vision},
The classical approach to depth from defocus uses two images taken with circular apertures of different sizes. We show in this paper that the use of a circular aperture severely restricts the accuracy of depth from defocus. 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. The two coded apertures are found to… CONTINUE READING
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