Camera noise and CCD research
The layout of a typical digital image sensor
The following are specific camera noise research articles which outline our studies of CCD and CMOS image sensor noise for image processing applications. Please contact one of the staff members on the right of this page for more information.
Articles on CCD and CMOS image processing, noise measurement, CCD image sensors:
Irie, K., McKinnon, A. E., Unsworth, K. & Woodhead, I. M. (2008). Measurement of digital camera image noise for imaging applications, Sensors and Transducers 90:185-194.
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 minimise the effects of noise, or could be used in a filter to remove noise prior to image analysis. The paper above presents an overview of image noise and describes a method for measuring noise quantity for use in image-based applications.
Irie, K., McKinnon, A. E., Unsworth, K. & Woodhead, I. M. (2008). A model for evaluation of noise in CCD digital-video cameras, Measurement, Science, and Technology 19.
Abstract: This study presents a comprehensive measurement of CCD digital-video camera noise. Knowledge of noise detail within images or video streams allows for the development of more sophisticated algorithms for separating true image content from the noise generated in an image sensor. The robustness and performance of an image processing algorithm is fundamentally limited by sensor noise. The individual noise sources present in CCD sensors are well understood, but there has been little literature on the development of a complete noise model for CCD digital video cameras, incorporating the effects of quantization and demosaicing.
Irie, K., McKinnon, A. E., Unsworth, K. & Woodhead, I. M. (2008). A technique for evaluation of CCD video-camera noise, Circuits and Systems for Video Technology, IEEE Transactions on 18(2): 280-284.
Abstract: The above paper presents a technique to identify and
measure the prominent sources of sensor noise in
commercially available CCD video cameras by analysis of the
output images. Noise fundamentally limits the distinguishable
content in an image and can significantly reduce the
robustness of an image processing application. Although
sources of image sensor noise are well documented, there has
been little work on the development of techniques to identify
and quantify the types of noise present in CCD video-camera
images. A comprehensive noise model for CCD cameras was
used to evaluate the technique on a commercially available
CCD video camera.
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