Microlens array camera with variable apertures for single-shot high dynamic range (HDR) imaging
2023; Optica Publishing Group; Volume: 31; Issue: 18 Linguagem: Inglês
10.1364/oe.498763
ISSN1094-4087
AutoresYoung-Gil Cha, Jiwoong Na, Hyun-Kyung Kim, Jae-Myeong Kwon, Seok-Haeng Huh, Seung-Un Jo, Chang-Hwan Kim, Min H. Kim, Ki-Hun Jeong,
Tópico(s)Advanced Optical Imaging Technologies
ResumoWe 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.
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