DEVELOPMENT OF EXPERIMENTAL PROCEDURE

The procedure of experimental data processing

The initial processing was done with "GDV PROCESSOR" programme. Parameters were adjusted with test-object images for eliminating background "noise": separated from the main image pixels. Then a set of parameters were calculated. The parametric data received after the initial processing were statistically processed by the programme "Microsoft Excel". According to the table data the diagrams are plotted.

To estimate stability and reproducibility of the measurements the following most informative parameters, presented by "GDV-Processor" programme, were chosen:

Fractal coefficient calculated for the 4-th isoline brightness characteristic. The distinctive feature of this isoline is that starting from it till the first isoline the influence of thermal fluctuations is minimal. Total illumination area, entropy and degree of auto-correlation function (according to brightness) were calculated as well.

The results of investigations, data analysis of which will be given in the next chapters , have demonstrated that in all cases the samples are most likely to be described by the normal distribution population. So, analysing the data received, this fact gives an opportunity to use ordinary Student t-criterion.

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