Microlens array camera with variable apertures for single-shot high dynamic range (HDR) imaging

被引：7

作者：

Cha, Young-Gil ^{[1
,2
]}

Na, Jiwoong ^{[3
]}

Kim, Hyun-Kyung ^{[1
,2
]}

Kwon, Jae-Myeong ^{[1
,2
]}

Huh, Seok-Haeng ^{[4
]}

Jo, Seung-Un ^{[4
]}

Kim, Chang-Hwan ^{[5
]}

Kim, Min H. ^{[3
]}

Jeong, Ki-Hun ^{[1
,2
]}

机构：

[1] Korea Adv Inst Sci & Technol KAIST, Dept Bio & Brain Engn, 291 Daeehak Ro, Daejeon 34141, South Korea

[2] KAIST Inst Hlth Sci & Technol KIHST, 291 Daehak Ro, Daejeon 34141, South Korea

[3] Korea Adv Inst Sci & Technol, Sch Comp, 291 Daeehak Ro, Daejeon 34141, South Korea

[4] LIG NEX1, 333 Pangyo Ro, Seongnam Si 13488, Gyeonggi Do, South Korea

[5] Def Rapid Acquisit Technol Res Inst, 16 Gil, Seoul, South Korea

来源：

OPTICS EXPRESS | 2023年 / 31卷 / 18期

基金：

新加坡国家研究基金会;

关键词：

DIFFERENTLY EXPOSED IMAGES; COMPOUND-EYE;

D O I：

10.1364/OE.498763

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a microlens array camera with variable apertures (MACVA) for high dynamic range (HDR) imaging by using microlens arrays with various sizes of apertures. The MACVA comprises variable apertures, microlens arrays, gap spacers, and a CMOS image sensor. The microlenses with variable apertures capture low dynamic range (LDR) images with different f-stops under single-shot exposure. The reconstructed HDR images clearly exhibit expanded dynamic ranges surpassing LDR images as well as high resolution without motion artifacts, comparable to the maximum MTF50 value observed among the LDR images. This compact camera provides, what we believe to be, a new perspective for various machine vision or mobile devices applications.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：29589 / 29595

页数：7

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