Inverse Poisson transformation and shot noise filtering

1990 ◽  
Vol 61 (8) ◽  
pp. 2088-2091 ◽  
Author(s):  
Hong Qian
Author(s):  
Nobuyoshi Fujimatsu ◽  
Kozo Fujii ◽  
Yoshiaki Tamura

Image processing procedure for noise reduction and image registration in the PSP experiments is investigated. A few kinds of filter are examined for the shot noise reduction caused by the CCD camera. The algorithm to detect a marker cell located on the model surface is proposed and an appropriate number size is shown. The algorithm using the wavelet transform is investigated to sharpen the edge around the model. The results indicate that the method developed in this paper effectively removes the shot noise and corrects the displacement of the model during wind-on.


1999 ◽  
Vol 09 (PR2) ◽  
pp. Pr2-23
Author(s):  
L. Saminadayar ◽  
A. Kumar ◽  
D. C. Glattli ◽  
Y. Jin ◽  
B. Etienne
Keyword(s):  

1984 ◽  
Author(s):  
A. J. Lemoine ◽  
M. L. Wenocur

Author(s):  
A. G. Wright

Standards laboratories can provide a photocathode calibration for quantum efficiency, as a function of wavelength, but their measurements are performed with the photomultiplier operating as a photodiode. Each photoelectron released makes a contribution to the photocathode current but, if it is lost or fails to create secondary electrons at d1, it makes no contribution to anode current. This is the basis of collection efficiency, F. The anode detection efficiency, ε‎, allied to F, refers to the counting efficiency of output pulses. The standard method for determining F involves photocurrent, anode current, count rate, and the use of highly attenuating filters; F may also be measured using methods based on single-electron responses (SERs), shot noise, or the SER at the first dynode.


1999 ◽  
Vol 35 (2) ◽  
pp. 159 ◽  
Author(s):  
R.A. Griffin ◽  
P.M. Lane ◽  
J.J. O'Reilly

2016 ◽  
Vol 41 (17) ◽  
pp. 3932 ◽  
Author(s):  
Guofeng Zhang ◽  
Hanjie Zhu

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