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. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: IEEE Trans Pattern Anal Mach Intell. 2020 Apr 23;42(7):1618–1629. doi: 10.1109/TPAMI.2020.2987489

Fig. 7. Modulation Transfer Function (MTF) of lensless point-spread-functions (PSFs).

Fig. 7.

The MTF is computed as the radially averaged magnitude spectrum of the PSFs. The PSFs compared are: Separable MSEQ [10], Fresnel zone apertures (FZA) [32], Tessellated spiral [13], Diffuser [14], Random binary, and our Contour PSF. The PSFs are visualized in Fig. 10. The magnitude spectrum of the proposed Contour PSF remains large for entire frequency range indicating better invertibility characteristic.