Signal-to-noise ratio evaluation of a CCD camera

Lingfeng Chen; Xusheng Zhang; Jiaming Lin; Dingguo Sha

doi:10.1016/j.optlastec.2008.10.012

Signal-to-noise ratio evaluation of a CCD camera

Lingfeng Chen^*, Xusheng Zhang, Jiaming Lin, Dingguo Sha

^*Corresponding author for this work

School of Optics and Photonics

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

A fast signal-to-noise ratio (SNR) digital test method for a CCD camera is presented in this study. The proposed method employs the conventionally used differential operations of two sequential images to determine the noise. However, the technique focuses on two features to improve the SNR evaluation: the noise is separated from the differential image by a specially designed digital high-pass filter that does not affect the noise intensity; and the additional quantization noise introduced into the digital image by the frame grabber is corrected for in the final calculation. The method can produce an objective measurement that offers high repeatability. The results obtained are consistent with those produced by industry standard instruments.

Original language	English
Pages (from-to)	574-579
Number of pages	6
Journal	Optics and Laser Technology
Volume	41
Issue number	5
DOIs	https://doi.org/10.1016/j.optlastec.2008.10.012
Publication status	Published - Jul 2009

Keywords

CCD camera
Digital high-pass filter
Signal-to-noise ratio

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10.1016/j.optlastec.2008.10.012

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AU - Zhang, Xusheng

AU - Lin, Jiaming

AU - Sha, Dingguo

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N2 - A fast signal-to-noise ratio (SNR) digital test method for a CCD camera is presented in this study. The proposed method employs the conventionally used differential operations of two sequential images to determine the noise. However, the technique focuses on two features to improve the SNR evaluation: the noise is separated from the differential image by a specially designed digital high-pass filter that does not affect the noise intensity; and the additional quantization noise introduced into the digital image by the frame grabber is corrected for in the final calculation. The method can produce an objective measurement that offers high repeatability. The results obtained are consistent with those produced by industry standard instruments.

AB - A fast signal-to-noise ratio (SNR) digital test method for a CCD camera is presented in this study. The proposed method employs the conventionally used differential operations of two sequential images to determine the noise. However, the technique focuses on two features to improve the SNR evaluation: the noise is separated from the differential image by a specially designed digital high-pass filter that does not affect the noise intensity; and the additional quantization noise introduced into the digital image by the frame grabber is corrected for in the final calculation. The method can produce an objective measurement that offers high repeatability. The results obtained are consistent with those produced by industry standard instruments.

KW - CCD camera

KW - Digital high-pass filter

KW - Signal-to-noise ratio

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JO - Optics and Laser Technology

JF - Optics and Laser Technology

IS - 5

ER -

Signal-to-noise ratio evaluation of a CCD camera

Abstract

Keywords

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