Deep learning enables reference-free isotropic super-resolution for volumetric fluorescence microscopy

Hyoungjun Park, Myeongsu Na, Bumju Kim, Soohyun Park, Ki Hean Kim, Sunghoe Chang and Jong Chul Ye ()
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Hyoungjun Park: Korea Advanced Institute of Science and Technology
Myeongsu Na: Seoul National University College of Medicine
Bumju Kim: Pohang University of Science and Technology
Soohyun Park: Pohang University of Science and Technology
Ki Hean Kim: Pohang University of Science and Technology
Sunghoe Chang: Seoul National University College of Medicine
Jong Chul Ye: Korea Advanced Institute of Science and Technology

Nature Communications, 2022, vol. 13, issue 1, 1-12

Abstract: Abstract Volumetric imaging by fluorescence microscopy is often limited by anisotropic spatial resolution, in which the axial resolution is inferior to the lateral resolution. To address this problem, we present a deep-learning-enabled unsupervised super-resolution technique that enhances anisotropic images in volumetric fluorescence microscopy. In contrast to the existing deep learning approaches that require matched high-resolution target images, our method greatly reduces the effort to be put into practice as the training of a network requires only a single 3D image stack, without a priori knowledge of the image formation process, registration of training data, or separate acquisition of target data. This is achieved based on the optimal transport-driven cycle-consistent generative adversarial network that learns from an unpaired matching between high-resolution 2D images in the lateral image plane and low-resolution 2D images in other planes. Using fluorescence confocal microscopy and light-sheet microscopy, we demonstrate that the trained network not only enhances axial resolution but also restores suppressed visual details between the imaging planes and removes imaging artifacts.

Date: 2022
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DOI: 10.1038/s41467-022-30949-6

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