Modeling of quantization noise in linear analog-to-digital converter

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F13%3A00208434" target="_blank" >RIV/68407700:21230/13:00208434 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22340/13:43895111
Result on the web
<a href="http://dx.doi.org/10.1117/12.2023048" target="_blank" >http://dx.doi.org/10.1117/12.2023048</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2023048" target="_blank" >10.1117/12.2023048</a>

Result language
angličtina
Original language name
Modeling of quantization noise in linear analog-to-digital converter
Original language description
Quantization noise is present in all the current digital imaging systems, therefore its understanding and modeling is crucial for optimization of image reconstruction techniques. Hence, this paper deals with modeling of the quantization noise. We exploitthe undecimated wavelet transform (UWT) for signal representation. We assume that the quantization noise in the spatial domain can be seen as additive, white and uniformly distributed. Hence, the UWT causes the transform of noise distribution due to weighted sum of noise samples and filter coefficients. From the known quantization step we are able to estimate suitable moments of noise uniform probability density function (PDF). These moments then could be directly evaluated in the undecimated wavelet domain using the derived equations. The presented algorithm gives the a priori information about the quantization noise and can be used for the suppression of it.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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