arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1809.01239physics.opticscs.CEphysics.bio-ph
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计算多焦显微镜

Computational multifocal microscopy

Kuan He, Zihao Wang, Xiang Huang, Xiaolei Wang, Seunghwan Yoo, Pablo Ruiz, Itay Gdor, Alan Selewa, Nicola J. Ferrier, Norbert Scherer, Mark Hereld, Aggelos K. K… 展开作者

Kuan He, Zihao Wang, Xiang Huang, Xiaolei Wang, Seunghwan Yoo, Pablo Ruiz, Itay Gdor, Alan Selewa, Nicola J. Ferrier, Norbert Scherer, Mark Hereld, Aggelos K. Katsaggelos, Oliver Cossairt

摘要:

尽管最近取得了进展,但高性能单次拍摄3D显微镜仍然是一项难以捉摸的任务。通过引入设计的衍射光学元件(DOE),能够将显微镜转换为3D“万花筒”,在这种情况下,快照图像由瓦片阵列组成,并且每个瓦片聚焦在不同的深度。然而,获得的多焦显微(MFM)图像遭受多种来源的退化,这阻碍了MFM的进一步应用。我们提出了一个统一的计算框架,简化了成像系统,并通过计算实现三维重建。我们的光学结构省略了色彩校正光栅,并重新设计了多焦光栅,以扩大跟踪区域。我们提出的设置功能只有一个单一的光栅,除了一个普通的显微镜。像差校正,以及泊松和背景去噪,被纳入我们的反卷积为基础的全自动算法,它不需要经验参数调整。在实验中,我们实现了$0.35$ μ m(横向)和$0.5$ μ m(轴向)的空间分辨率,这是可比的分辨率,可以实现与共焦去卷积显微镜。我们展示了一个三维视频移动细菌记录在$25$帧每秒使用我们提出的计算多焦显微镜技术。

英文摘要:

Despite recent advances, high performance single-shot 3D microscopy remains an elusive task. By introducing designed diffractive optical elements (DOEs), one is capable of converting a microscope into a 3D "kaleidoscope", in which case the snapshot image consists of an array of tiles and each tile focuses on different depths. However, the acquired multifocal microscopic (MFM) image suffers from multiple sources of degradation, which prevents MFM from further applications. We propose a unifying computational framework which simplifies the imaging system and achieves 3D reconstruction via computation. Our optical configuration omits chromatic correction grating and redesigns the multifocal grating to enlarge the tracking area. Our proposed setup features only one single grating in addition to a regular microscope. The aberration correction, along with Poisson and background denoising, are incorporated in our deconvolution-based fully-automated algorithm, which requires no empirical parameter-tuning. In experiments, we achieve the spatial resolutions of $0.35$um (lateral) and $0.5$um (axial), which are comparable to the resolution that can be achieved with confocal deconvolution microscopy. We demonstrate a 3D video of moving bacteria recorded at $25$ frames per second using our proposed computational multifocal microscopy technique.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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