Calibration of defocus blur for zoom lenses

Jaekyoung Moon; Soon-Yong Park

doi:10.1117/1.2823155

1 December 2007 Calibration of defocus blur for zoom lenses

Jaekyoung Moon, Soon-Yong Park

Author Affiliations +

Optical Engineering, Vol. 46, Issue 12, 127005 (December 2007). https://doi.org/10.1117/1.2823155

Abstract

Depth from defocus(DFD) measures defocus blur, which determines the point spread function (PSF) of an image formation system. Most DFD research has been investigated with a fixed focal length, where two or more defocus images are obtained with different image distances or lens apertures. To apply DFD techniques using a zoom lens, extensive calibration of the image formation system is needed. This work presents a simple calibration technique of defocus blur for a zoom lens system. We derive the relationship of defocus blur with respect to different focal lengths of the lens. The proposed technique is applied to a spatial domain DFD technique for error analysis.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Jaekyoung Moon and Soon-Yong Park "Calibration of defocus blur for zoom lenses," Optical Engineering 46(12), 127005 (1 December 2007). https://doi.org/10.1117/1.2823155

Published: 1 December 2007

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