Title

Square coded aperture : a large aperture with infinite depth of field

Author

Ruojun He

Date of Award

2014

Degree Name

M.S. in Electrical Engineering

Department

Department of Electrical and Computer Engineering

Advisor/Chair

Advisor: Keigo Hirakawa

Abstract

We propose a square aperture as a simple and practical alternative to existing coded aperture. A spatial derivative converts sensor measurements taken with a square aperture mask into measurements taken with a pinhole or slit aperture mask. Thus square aperture shares the properties of both large and small apertures, yielding excellent light efficiency while an artificial small aperture results in an infinite depth of field. We developed a prototype lens to confirm the feasibility of our blur size estimation and image deblurring approach.

Keywords

Image processing Digital techniques, Synthetic apertures Design and construction, Engineering, Computer Engineering, coded aperture, imaging processing, blur estimation, deblurring

Rights Statement

Copyright 2014, author

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