@article{poon_motamedi_1987, 
  title={Optical/digital incoherent image processing for extended depth of field}, 
  volume={26}, 
  DOI={10.1364/ao.26.004612}, 
  number={21}, 
  publisher={The Optical Society}, 
  author={Poon and Motamedi}, 
  year={1987}, 
  month={Nov}
  }