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- W2393856835 abstract "Electron multiplier CCD(EMCCD) can potentially count a single photon because of the very low detection noise.But the gray values of adjacent pixels are highly correlated with each other in photon grayscale images obtained by EMCCD(coorelation coefficients are larger than 0.72).This feature shows that the number and location of photon signals will have a greater distortion if the images are processed based on the threshold algorithm.In addition,the number of photon signals isolated from each other in an image is much smaller than that of pixels under the situation of ultraweak luminescence,e.g.Therefore,a new algorithm was developed based on watershed algorithm by treating one isolated high-value region as the response of one photon.This new algorithm gives baseline estimation synchronously,and takes the characteristics of group pixels into account rather than a single pixel.The results show that the new algorithm is more reliable and stable due to reducing the influence of unsureness of optimal threshold value and protecting the location information of photons better.The sensitivity and reliability of this new algorithm are also tested and confirmed with EMCCD imaging of mung bean sprouts,even the signals are as weak as 146 photons/image." @default.
- W2393856835 created "2016-06-24" @default.
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- W2393856835 date "2013-01-01" @default.
- W2393856835 modified "2023-09-26" @default.
- W2393856835 title "Photonic information extraction of utraweak emission imaging based on watershed algorithm" @default.
- W2393856835 hasPublicationYear "2013" @default.
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