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Noniterative boundary-artifact-free wavefront reconstruction from its derivatives |
Applied Optics, Vol. 51, Issue 23, pp. 5698-5704 (2012)
http://dx.doi.org/10.1364/AO.51.005698
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Abstract
Wavefront sensors are usually based on measuring the wavefront derivatives. The most commonly used approach to quantitatively reconstruct the wavefront uses discrete Fourier transform, which leads to artifacts when phase objects are located at the image borders. We propose here a simple approach to avoid these artifacts based on the duplication and antisymmetrization of the derivatives data, in the derivative direction, before integration. This approach completely erases the border effects by creating continuity and differentiability at the edge of the image. We finally compare this corrected approach to the literature on model images and quantitative phase images of biological microscopic samples, and discuss the effects of the artifacts on the particular application of dry mass measurements.
© 2012 Optical Society of America
OCIS Codes
(000.3860) General : Mathematical methods in physics
(100.5070) Image processing : Phase retrieval
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(110.7348) Imaging systems : Wavefront encoding
ToC Category:
Imaging Systems
History
Original Manuscript: June 15, 2012
Revised Manuscript: July 11, 2012
Manuscript Accepted: July 11, 2012
Published: August 8, 2012
Virtual Issues
Vol. 7, Iss. 10 Virtual Journal for Biomedical Optics
Citation
Pierre Bon, Serge Monneret, and Benoit Wattellier, "Noniterative boundary-artifact-free wavefront reconstruction from its derivatives," Appl. Opt. 51, 5698-5704 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-23-5698
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