High-quality object reconstruction based on ghost imaging

Yin Xiao, Lina Zhou, Wen Chen

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Ghost imaging (GI) becomes an attractive research topic in recent years, and has been developed for some years. Correlation algorithm is usually used to reconstruct object in the GI. However, due to a linear relationship between quality of the recovered objects and the number of measurements, it needs a large number of measurements to obtain a satisfied object reconstruction when conventional GI is applied. Although some improved algorithms, e.g., differential GI and normalized GI, are developed, they could still not be feasible for achieving high-quality object reconstruction in some cases. In this paper, a high-quality object reconstruction method is presented for the GI. The method takes advantage of the property of Hadamard transform. For a 2D matrix, after the Hadamard transform is applied to it, the first element of the Hadamard spectrum is equivalent to the sum of all matrix elements. In the measurement process of GI, single-pixel detector collects the total light intensity, i.e., the sum of transmitted light. Hence, the property of Hadamard transform corresponds to the single-pixel measurement process in the GI. As a result, it is possible to utilize the detected single-pixel values as constraints. An algorithm is presented in this paper to reduce the number of measurements dramatically in the GI and simultaneously achieve a high-quality object reconstruction. In the method, the signal-to-noise ratio (SNR) has a nonlinear growth with respect to the number of measurements, and it is different from conventional GI methods. Feasibility and effectiveness of the method are computationally demonstrated.

Original languageEnglish
Title of host publication2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2903-2907
Number of pages5
ISBN (Electronic)9781728153049
DOIs
Publication statusPublished - 17 Dec 2019
Event2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Xiamen, China
Duration: 17 Dec 201920 Dec 2019

Publication series

Name2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Proceedings

Conference

Conference2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019
Country/TerritoryChina
CityXiamen
Period17/12/1920/12/19

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Mathematical Physics

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