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Optical Engineering

Single-image full-focus reconstruction using depth-based deconvolution
Author(s): Basel Salahieh; Jeffrey J. Rodriguez; Sean Stetson; Rongguang Liang
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Paper Abstract

In contrast with traditional extended depth-of-field approaches, we propose a depth-based deconvolution technique that realizes the depth-variant nature of the point spread function of an ordinary fixed-focus camera. The developed technique brings a single blurred image to focus at different depth planes which can be stitched together based on a depth map to output a full-focus image. Strategies to suppress the deconvolution’s ringing artifacts are implemented on three levels: block tiling to eliminate boundary artifacts, reference maps to reduce ringing initiated by sharp edges, and depth-based masking to mitigate artifacts raised by neighboring depth-transition surfaces. The performance is validated numerically for planar and multidepth objects.

Paper Details

Date Published: 30 September 2016
PDF: 10 pages
Opt. Eng. 56(4) 041302 doi: 10.1117/1.OE.56.4.041302
Published in: Optical Engineering Volume 56, Issue 4
Show Author Affiliations
Basel Salahieh, The Univ. of Arizona (United States)
Jeffrey J. Rodriguez, The Univ. of Arizona (United States)
Sean Stetson, Google (United States)
Rongguang Liang, College of Optical Sciences, The Univ. of Arizona (United States)

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