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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 24 — Nov. 21, 2011
  • pp: 24609–24626

Effects of sampling on the phase transfer function of incoherent imaging systems

Vikrant R. Bhakta, Manjunath Somayaji, and Marc P. Christensen  »View Author Affiliations

Optics Express, Vol. 19, Issue 24, pp. 24609-24626 (2011)

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With the advent of modern-day computational imagers, the phase of the optical transfer function may no longer be summarily ignored. This study discusses some important properties of the phase transfer function (PTF) of digital incoherent imaging systems and their implications on the performance and characterization of these systems. The effects of aliasing and sub-pixel image shifts on the phase of the complex frequency response of these sampled systems are described, including an examination of the specific case of moderate aliasing. Key properties of this function in aliased imaging systems are derived and their potential treatment to a range of diverse applications encompassing traditional and computational imaging systems is discussed.

© 2011 OSA

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(110.4850) Imaging systems : Optical transfer functions
(110.1758) Imaging systems : Computational imaging
(110.7348) Imaging systems : Wavefront encoding

ToC Category:
Imaging Systems

Original Manuscript: September 19, 2011
Revised Manuscript: November 5, 2011
Manuscript Accepted: November 7, 2011
Published: November 16, 2011

Vikrant R. Bhakta, Manjunath Somayaji, and Marc P. Christensen, "Effects of sampling on the phase transfer function of incoherent imaging systems," Opt. Express 19, 24609-24626 (2011)

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