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. 2018 Sep 6;9(10):4649–4664. doi: 10.1364/BOE.9.004649

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Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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Fig. 6 — Results from imaging lens tissue paper using four images with a 2×2 square shift pattern, showing (a) single raw acquired LR image, (b) reconstruction by Gaussian smoothing on a single LR image, (c) reconstruction by DT algorithm on a single LR image, (d) reconstruction by DT algorithm on the average of 4 shifted LR images, (e) reconstruction using the proposed SR method and (f) un-cropped images of single LR frame and SR image reconstructed using the proposed method. For (a)–(e), images are cropped to 233×233 pixels for better visualization. Zoomed insets (3.1X magnification) correspond to a small area where two lens paper fibers overlap. (g) Plot of pixel intensity along a line segment shown on the insets. Image contrast values are calculated at *peak-1 and **peak-2. The scale bar is 10 µm.