Efficient testing methodologies for microcameras in a gigapixel imaging system

Seo Ho Youn; Daniel L. Marks; Paul O. McLaughlin; David J. Brady; Jungsang Kim

doi:10.1117/12.2020739

13 May 2013 Efficient testing methodologies for microcameras in a gigapixel imaging system

Seo Ho Youn, Daniel L. Marks, Paul O. McLaughlin, David J. Brady, Jungsang Kim

Proceedings Volume 8788, Optical Measurement Systems for Industrial Inspection VIII; 87883B (2013) https://doi.org/10.1117/12.2020739
Event: SPIE Optical Metrology 2013, 2013, Munich, Germany

Abstract

Multiscale parallel imaging--based on a monocentric optical design--promises revolutionary advances in diverse imaging applications by enabling high resolution, real-time image capture over a wide field-of-view (FOV), including sport broadcast, wide-field microscopy, astronomy, and security surveillance. Recently demonstrated AWARE-2 is a gigapixel camera consisting of an objective lens and 98 microcameras spherically arranged to capture an image over FOV of 120° by 50°, using computational image processing to form a composite image of 0.96 gigapixels. Since microcameras are capable of individually adjusting exposure, gain, and focus, true parallel imaging is achieved with a high dynamic range. From the integration perspective, manufacturing and verifying consistent quality of microcameras is a key to successful realization of AWARE cameras. We have developed an efficient testing methodology that utilizes a precisely fabricated dot grid chart as a calibration target to extract critical optical properties such as optical distortion, veiling glare index, and modulation transfer function to validate imaging performance of microcameras. This approach utilizes an AWARE objective lens simulator which mimics the actual objective lens but operates with a short object distance, suitable for a laboratory environment. Here we describe the principles of the methodologies developed for AWARE microcameras and discuss the experimental results with our prototype microcameras. Reference Brady, D. J., Gehm, M. E., Stack, R. A., Marks, D. L., Kittle, D. S., Golish, D. R., Vera, E. M., and Feller, S. D., “Multiscale gigapixel photography,” Nature 486, 386--389 (2012).

Citation Download Citation

Seo Ho Youn, Daniel L. Marks, Paul O. McLaughlin, David J. Brady, and Jungsang Kim "Efficient testing methodologies for microcameras in a gigapixel imaging system", Proc. SPIE 8788, Optical Measurement Systems for Industrial Inspection VIII, 87883B (13 May 2013); https://doi.org/10.1117/12.2020739

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available