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Single Shot Exposure Bracketing for High-Dynamic Range Imaging using a Multifunctional Metasurface

thesis
posted on 2024-04-17, 15:53 authored by Charles Thomas BrookshireCharles Thomas Brookshire

We propose a hardware driven solution to high dynamic range (HDR) imaging in the form of a single metasurface lens. Our design consists of a metasurface capable of forming nine low dynamic range (LDR) sub-images of varying intensities scaling by a factor of 2 onto an imaging sensor. After synthetically verifying the functionality of our design, the metasurface is fabricated and a prototype system is constructed for real world experiments. Utilizing the experimental system, the compatibility of our extracted LDR sub- images with pre-existing exposure bracketing solutions for multi-image HDR fusion is demonstrated. The resulting HDR images are highly robust to scene motion due to the instantaneous capture of multi-exposure LDR sub-images allowing for HDR video capabilities.

History

Degree Type

  • Master of Science in Electrical and Computer Engineering

Department

  • Electrical and Computer Engineering

Campus location

  • West Lafayette

Advisor/Supervisor/Committee Chair

Qi Guo

Additional Committee Member 2

Stanley Chan

Additional Committee Member 3

Michael Zoltowski

Additional Committee Member 4

Gregery Buzzard

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