Step-by-step transfer function reversal for single-shot 3D fiber endoscopy using a diffuser

Tom Glosemeyer; Julian Lich; Robert Kuschmierz; Jürgen Czarske

doi:10.1117/12.2650292

16 May 2023 Step-by-step transfer function reversal for single-shot 3D fiber endoscopy using a diffuser

Tom Glosemeyer, Julian Lich, Robert Kuschmierz, Jürgen Czarske

Proceedings Volume 12385, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXX; 1238508 (2023) https://doi.org/10.1117/12.2650292
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

Endoscopy through coherent fiber bundles plays a significant role in industrial and medical 2D imaging. By replacing the lens on the distal side with a diffuser, the 3D information of the measurement volume is encoded as 2D speckle patterns on the camera. Neural networks can then be employed to reconstruct the 3D object. Therefore, minimally invasive single-shot 3D imaging through a flexible low-cost endoscope with a diameter of less than 1 mm is enabled. However, the number of fiber cores is limiting the transferable information and reduces the reconstruction quality. In this paper, separate reconstruction for the diffuser and the coherent fiber bundle for different core numbers is explored. This approach enables biomedical applications for in vivo diagnostics, e.g. with fluorescence imaging in 3D.

Conference Presentation

Citation Download Citation

Tom Glosemeyer, Julian Lich, Robert Kuschmierz, and Jürgen Czarske "Step-by-step transfer function reversal for single-shot 3D fiber endoscopy using a diffuser", Proc. SPIE 12385, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXX, 1238508 (16 May 2023); https://doi.org/10.1117/12.2650292

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