Estimation of image reconstruction quality in multiplex terahertz ghost imaging

Ismagilov A.O., Lappo-Danilevskaya A.K., Kalinichev A.A., Tsypkin, A.N.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Исмагилов А.О., Лаппо-Данилевская А.К., Калиничев А.А., Цыпкин А.Н. Оценка качества восстановления изображения в случае мультиплексной терагерцовой фантомной визуализации // Оптический журнал. 2023. Т. 90. № 8. С. 55–63. http://doi.org/10.17586/1023-5086-2023-90-08-55-63

Ismagilov A.O., Lappo-Danilevskaya A.K., Kalinichev A.A., Tcypkin A.N. Estimation of image reconstruction quality in multiplex terahertz ghost imaging [In Russian] // Opticheskii Zhurnal. 2023. V. 90. № 8. P. 55–63. http://doi.org/10.17586/1023-5086-2023-90-08-55-63

For citation (Journal of Optical Technology):

Azat Ismagilov, Anastasia Lappo-Danilevskaya, Aleksey Kalinichev, and Anton Tcypkin, "Assessment of image reconstruction quality in multiplexed terahertz ghost imaging," Journal of Optical Technology. 90(8), 451-455 (2023). https://doi.org/10.1364/JOT.90.000451

Abstract:

Subject of study. The dependency of structural similarity index between the reconstructed and the reference images in the case of multiplexed terahertz ghost imaging on the used frequency ranges of broadband terahertz radiation. Aim of study. The assessment of the broadband terahertz frequency bands’ selection impact on the structural similarity index between the reconstructed and the reference images. Method. The developed mathematical model allows to obtain speckle-structures images formed during the radiation propagation through a transparent heterogeneous phase object on separate frequency components of the used broadband terahertz radiation. Similar images of speckle-structures can be obtained in an experiment using an electrooptical detection. The image reconstruction was carried out by means of the multiplexed terahertz ghost imaging. Main results. The used mathematical model is described. The dependencies of the structural similarity index between the reconstructed and the reference images on iterations number for different frequency ranges of broadband terahertz radiation are presented. Practical significance. The results of this work can be used to adjust the multiplexed terahertz ghost imaging system in order to achieve the optimal ratio between the number of necessary measurements and the quality of the reconstructed image.

Keywords:

terahertz radiation, multiplexing, ghost imaging, structural similarity index, broadband radiation

Acknowledgements:

the work was carried out with the financial support of the Ministry of Education and Science of the Russian Federation within the framework of the State Task (Passport № 2019-0903)

OCIS codes: 110.3010; 110.6795

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