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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Using matlab for visualization of plasma dynamics by statystical processing of photograph sequences
 Chumak, Oleksiy ; Hrabovský, Milan
Short exposure photographs capturing the momentary state of the plasma radiation are often used for the primary characterization of discharges. Sequence of such images gives an impression about a variation of radiation intensity in different areas and can be used to describe the fluctuation intensity. This work presents a statistical procedure which produces brightness fluctuation intensity maps. Two realizations of the statistical procedure in Matlab environment are described and compared.
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Characterization of fluctuating discharge
 Chumak, Oleksiy ; Hrabovský, Milan
A digital camera coupled with computer has a great potential in an analysis of discharges structures. This work analyzes an approach to visualization of dynamic radiant object. Mapping of brightness uncertainty values is used to show regions of different fluctuation intensity of radiation. The entropy as described by information theory was used as a relevant parameter for an uncertainty value. By a mathematical procedure a relative parameter based on the entropy was evaluated. As result an effects of optics sensitivity or of imperfections of experimental set-up were significantly suppressed.
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