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Special Issue: Modern Sensing Technologies

Vol. 90, April 2008, pp. 185-194

 

 Bullet

Measurement of Digital Camera Image Noise for Imaging Applications

 

1Kenji IRIE, 2Alan E. McKINNON, 2Keith UNSWORTH, 1Ian M. WOODHEAD

1Lincoln Ventures Ltd, P.O. Box 133, Lincoln, Christchurch 7640, New Zealand

Tel.: ++64-3-325-3712, fax ++64-3-325-3712,

2 Applied Computing Group, Lincoln University, Canterbury, New Zealand

E-mail: iriek@lvl.co.nz, woodhead@lvl.co.nz, mckinnon@lincoln.ac.nz, unsworth@lincoln.ac.nz

 

 

 Received: 15 October 2007   /Accepted: 20 February 2008   /Published: 15 April 2008

 

Abstract: Noise within captured images from digital cameras is unavoidable and can confound or reduce the performance of an image-based application. It is present in the captured photons, generated in the sensor electronics, and an inherent part of the digital signal processing. A measure of image noise can allow an algorithm to fine tune its parameters to minimize the effects of noise, or could be used in a filter to remove noise prior to image analysis. This paper presents an overview of image noise and describes a method for measuring noise quantity for use in image-based applications.

 

Keywords: Image analysis, Noise measurement, CCD image sensor, CMOS image sensor

 

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