2017年第78回応用物理学会秋季学術講演会

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一般セッション(口頭講演)

CS コードシェアセッション » 【CS.1】3.3 Information photonics and image engineering, 4.5 Information Photonics Code-sharing session

[6p-A409-1~8] 【CS.1】3.3 Information photonics and image engineering, 4.5 Information Photonics Code-sharing session

2017年9月6日(水) 14:30 〜 17:15 A409 (409)

鈴木 裕之(東工大)、ヘーガン ネイザン(宇都宮大)

16:00 〜 16:30

[6p-A409-5] [JSAP-OSA Joint Symposia 2017 Invited Talk] Light Field Microscopy Combined with Super-resolution Techniques

Shin Usuki1、Tani Yoshitake1、Miura Kenjiro1 (1.Shizuoka Univ.)

キーワード:light field microscopy, super-resolution, fourier ptychography

This study introduces a light field microscopy (LFM) in which a microlens array is employed for spatial and angular sampling of light from an object through an objective lens in a wide-field optical microscopy. The LFM has expanded depth of field and digital refocusing ability for 3D measurement. However, it has a critical drawback that spatial resolution is limited by spatial sampling determined by diameter of each microlens. Typically each microlens have several sub-millimeter diameter, hence the cutoff frequency in the diffraction limited imaging system spatial exceeds spatial sampling frequency in the LFM images. As one of the solutions for this problem, resolution improvement based on sub-pixel shift multi-image processing was proposed. Then the experimental apparatus to verify the proposed method was developed. The resulting image (see Figure.1) exhibited higher spatial resolution than that of a sub-aperture image obtained by a typical light field microscopy. Furthermore, a different approach towards the super-resolution of the LFM, which employs Fourier Ptychography a kind of computational imaging technique, will be introduced.