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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 9, Iss. 3 — Mar. 10, 2011
  • pp: 031101–

A new analytical edge spread function fitting model for modulation transfer function measurement

Tiecheng Li, Huajun Feng, and Zhihai Xu  »View Author Affiliations

Chinese Optics Letters, Vol. 9, Issue 3, pp. 031101- (2011)

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We propose a new analytical edge spread function (ESF) fitting model to measure the modulation transfer function (MTF). The ESF data obtained from a slanted-edge image are fitted to our model through the non-linear least squares (NLLSQ) method. The differentiation of the ESF yields the line spread function (LSF), the Fourier transform of which gives the profile of two-dimensional MTF. Compared with the previous methods, the MTF estimate determined by our method conforms more closely to the reference. A practical application of our MTF measurement in degraded image restoration also validates the accuracy of our model.

© 2011 Chinese Optics Letters

OCIS Codes
(100.1830) Image processing : Deconvolution
(100.2000) Image processing : Digital image processing
(110.2960) Imaging systems : Image analysis
(110.4100) Imaging systems : Modulation transfer function

Tiecheng Li, Huajun Feng, and Zhihai Xu, "A new analytical edge spread function fitting model for modulation transfer function measurement," Chin. Opt. Lett. 9, 031101- (2011)

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