Loading web-font TeX/Main/Regular
Current Location: > Detailed Browse

Parallel ghost imaging with ultra low dose and high pixel resolution

请选择邀稿期刊:
Abstract: Ghost imaging, as a novel imaging technique, enables image acquisition under low-light conditions through single-pixel measurements. It holds tremendous potential across various application areas, such as biomedical imaging, remote sensing, biometrics, astronomy, and three-dimensional imaging. However, reconstructing high-resolution images typically requires a large number of single-pixel samples, which is time-consuming and presents practical limitations for its application. Parallel ghost imaging, wherein each pixel of a position-sensitive detector is used as a bucket detector to perform thousands of measurements in parallel, theoretically allows for high resolution, extra-large field-of-view, and ultra-low dose non-local imaging.

In previous work, we independently achieved three distinct milestones in parallel ghost imaging: first, we realized high pixel resolution, then we demonstrated low-dose imaging, and finally, we successfully implemented ultra-large field-of-view imaging, with each of these advances being accomplished separately and independently. Moreover, we also introduced a global ghost imaging framework specifically designed for bucket detector arrays. In this study, we present two key innovations: First, we implemented low-dose parallel ghost imaging within the computational ghost imaging framework, replacing the crystal beam-splitting method, which significantly improved image quality compared to prior approaches. Second, for the first time, we simultaneously achieved the three exceptional features of high resolution, low dose, and large field-of-view in parallel ghost imaging. In just a few minutes, we were able to generate a ghost image with a resolution of 2016 × 2016 pixels, an effective pixel size of 0.65 micrometers, and an equivalent total exposure time as low as 0.12 ms. In contrast, traditional projection-based imaging requires an exposure time of 500 ms, and the physical limit of high-resolution detectors is 1.004 ms. The total dose in parallel ghost imaging is significantly lower than what is achievable with the shortest exposure time of the detector, effectively reconstructing object information from the "ghost."

We propose this parallel ghost imaging framework, which is expected to pave the way for the practical implementation and commercialization of ghost imaging technology.

 

Version History

[V1] 2024-12-24 12:58:50 ChinaXiv:202412.00319V1 Download
Download
Preview
Peer Review Status
Awaiting Review
License Information
metrics index
  •  Hits1360
  •  Downloads483
Comment
Share
Apply for expert review