1 January 2011 Using image entropy maximum for auto exposure
Author Affiliations +
Abstract
To achieve auto exposure in digital cameras, image brightness is widely used because of its direct relationship with exposure value. To use image entropy as an alternative statistic to image brightness, it is required to establish how image entropy changes as exposure value is varied. This paper presents a mathematical proof along with experimental verification results to show that image entropy reaches a maximum value as exposure value is varied by changing shutter speed or aperture size.
©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)
Mohammad T. Rahman, Nasser Kehtarnavaz, and Qolamreza R. Razlighi "Using image entropy maximum for auto exposure," Journal of Electronic Imaging 20(1), 013007 (1 January 2011). https://doi.org/10.1117/1.3534855
Published: 1 January 2011
Lens.org Logo
CITATIONS
Cited by 17 scholarly publications and 5 patents.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Camera shutters

Digital cameras

Cameras

Digital imaging

Light sources and illumination

3D image processing

Digital image processing

RELATED CONTENT


Back to Top