Phase recovery method for PTF and PGTF spectrum fusion based on optimized illumination

Na Liu; Li Chen; Yao Fan; Chenyue Zheng; Chao Zuo

doi:10.1117/12.3008088

18 December 2023 Phase recovery method for PTF and PGTF spectrum fusion based on optimized illumination

Na Liu, Li Chen, Yao Fan, Chenyue Zheng, Chao Zuo

Proceedings Volume 12967, AOPC 2023: Computing Imaging Technology; 129670E (2023) https://doi.org/10.1117/12.3008088
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

Differential phase contrast (DPC) imaging is a non-interferometric, label-free and efficient quantitative phase imaging method based on partially coherent illumination modulation, of which the two widely used forms are the method based on the slow-variable-object approximation solved by the phase gradient transfer function (PGTF) and the method based on the weak-object approximation solved by the phase transfer function (PTF). Both methods can recover the phase well under their respective approximations, but for phase recovery of certain complex phase objects in reality, they are lackluster due to the limitations imposed by their use of approximations. To break this limitation, a spectral fusion method is proposed in this paper, which can take into account the low-frequency generalization and high-frequency details of phase objects and achieve efficient and accurate quantitative phase imaging by effectively merging the phases reconstructed by PTF and PGTF in the frequency domain on the basis of optimized illumination. Relevant simulations and experiments demonstrate the effectiveness of the method.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Na Liu, Li Chen, Yao Fan, Chenyue Zheng, and Chao Zuo "Phase recovery method for PTF and PGTF spectrum fusion based on optimized illumination", Proc. SPIE 12967, AOPC 2023: Computing Imaging Technology, 129670E (18 December 2023); https://doi.org/10.1117/12.3008088

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