Smear removal algorithm using the optical black region for CCD imaging sensors

Han, Young Seok; Choi, Euncheol; Kang, Moon Gi

doi:10.1109/tce.2009.5373800

Cited by 19 publications

(12 citation statements)

References 6 publications

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“…While the initial decay across the first few pixel might be ruled by the electrical smear in the charge transfer process, 38 most of the decay is expected to be dominated by optical absorption following Lamberts law. The decay once not effected by electrical smear does not simply follow a single term exponential function, which would appear as a linear decay in Figure 8(a), since the absorption coefficient is wavelength dependent and the total decay curve is the convolution of each individual PSF for each wavelength with the experimental setup and the luminescence spectrum defining the spectral intensities.…”

Section: Quantifying Light Spreadingmentioning

confidence: 99%

On the method of photoluminescence spectral intensity ratio imaging of silicon bricks: Advances and limitations

Mitchell

Weber²,

Walter

et al. 2012

Journal of Applied Physics

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Spectral photoluminescence imaging is able to provide quantitative bulk lifetime and doping images if applied on silicon bricks or thick silicon wafers. A comprehensive study of this new method addresses previously reported artefacts in low lifetime regions and provides a more complete understanding of the technique. Spectrally resolved photoluminescence measurements show that luminescence originating from sub band gap defects does not cause those artefacts. Rather, we find that optical light spreading within the silicon CCD is responsible for most of the distortion in image contrast and introduce a method to measure and remove this spreading via image deconvolution. Alternatively, image blur can be reduced systematically by using an InGaAs camera. Results of modelling this alternative camera type and experiments are shown and discussed in comparison. In addition to eliminating the blur effects, we find a superior accuracy for lifetimes above 100 ls with significantly shorter, but dark noise limited exposure times. V

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Section: Quantifying Light Spreadingmentioning

confidence: 99%

On the method of photoluminescence spectral intensity ratio imaging of silicon bricks: Advances and limitations

Mitchell

Weber²,

Walter

et al. 2012

Journal of Applied Physics

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“…We also have compared our result to the result in paper [2]. The processed image's size is 1024x1024 and the dynamic range is 8bit.…”

Section: The Results and Analysis Of Experimentsmentioning

confidence: 99%

“…This the source of smear phenomenon in inter-frame CCD image sensors [1]. In inter-line CCD and full-frame CCD camera sensors, if it works without a mechanical shutter, smear phenomenon also occurs [2].…”

Section: Introductionmentioning

confidence: 99%

“…al. [2] proposed that by using dark pixels of CCD image sensors we can detect the position of Smear phenomenon and by using interpolation we can suppress the smear phenomenon. Now there are many efficient methods developed for eliminating or suppressing Smear phenomenon, but most of them depends on special hardware or need change the design of CCD image sensors and for the limitations of environment, they can not work very well on star images.…”

Section: Introductionmentioning

confidence: 99%

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A robust smear removal method for inter-frame Charge-Coupled Device star images

Gao

Zhang

Yao

et al. 2011

2011 Seventh International Conference on Natural Computation

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In order to eliminate the influence of Smear Effect on follow-up processing of star images, this paper researched the source and statistical model of Smear Effect. After researching the working progress of inter-line Charge Coupled Device(CCD), inter-frame CCD and full-frame CCD, this paper builds a statistical model for the background noise and then proposes an algorithm to do radiometric correction in smear images based on modeling and estimating the intensity of background noise in star image. Experimental results indicate that the algorithm in this paper can remove smear effect in star image efficiently while retaining origin information. The method in this paper can eliminate the influence of smear effect in star images while retaining origin information.

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“…To acquire all the encoded data at the same time, we choose a 2D imaging CCD as the detector. However, smearing [10], which is an inevitable phenomenon that occurs during the charge transfer process of CCD imaging sensors, has generated a crosstalk among the multi-measurements. The smearing is especially significant when the intensity of some pixel is much higher than the pixels around it, so the detection of discrete spectrum suffers a lot from this phenomenon.…”

Section: Side-effect Caused By the Smear Noise Of The Imaging Ccdmentioning

confidence: 99%

Avoiding the side-effect of high-performance spectrometers with coded apertures

Chi

Peng

et al. 2013

Appl. Opt.

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In this report, a high-resolution, high-signal-to-noise-coded aperture spectrometer is introduced that replaces the traditional single slit with two-dimensional array slits manufactured by microelectromechanic system technology. The encoding and decoding principle of this coded aperture spectrometer is described, as well as the instrument structure. We then discuss the side-effect, which is caused by sub-aperture manufacturing errors in size and position and the smear noise in the imaging CCD. The side-effect adversely affects the decoding wavelength accuracy of this spectrometer, so we present some effective ways to avoid this phenomenon and to increase the decoding wavelength accuracy of the spectrometer. In the end, we present our experimental results.

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Smear removal algorithm using the optical black region for CCD imaging sensors

Cited by 19 publications

References 6 publications

On the method of photoluminescence spectral intensity ratio imaging of silicon bricks: Advances and limitations

On the method of photoluminescence spectral intensity ratio imaging of silicon bricks: Advances and limitations

A robust smear removal method for inter-frame Charge-Coupled Device star images

Avoiding the side-effect of high-performance spectrometers with coded apertures

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