Quantitative phase from defocused intensity by image deconvolution

Chao Zuo; Qian Chen; Anand Asundi

doi:10.1117/12.2018759

22 June 2013 Quantitative phase from defocused intensity by image deconvolution

Chao Zuo, Qian Chen, Anand Asundi

Proceedings Volume 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013); 87691Q (2013) https://doi.org/10.1117/12.2018759
Event: International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 2013, Singapore, Singapore

Abstract

We present a method for quantitative phase recovery using the axially defocused intensity information based on the phase optical transfer function in defocused situation. The image formation process is linearized by subtraction of two intensity images with equal and opposite defocus distances and quantitative phase information is separated and extracted by solving an inverse problem with Wiener filtering. Experiments confirm the accuracy and stability of the proposed method outperforms the transport-of-intensity reconstruction method.

Citation Download Citation

Chao Zuo, Qian Chen, and Anand Asundi "Quantitative phase from defocused intensity by image deconvolution", Proc. SPIE 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 87691Q (22 June 2013); https://doi.org/10.1117/12.2018759

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