  We calculated morphological parameters for 70821 galaxies from VIPERS
(spectroscopic galaxy survey performed on VIMOS spectroscope at VLT). These
parameters includes Gini, M20, Concentration, Asymmetry and Smoothness. Results
correlate with the distribution of these parameters for other simulated and
observed samples. We also studied dependence of these parameters with Sersic
power index of radial distribution of surface brightness of galaxy image. Our
aim was to find a clear separation of VIPERS galaxies on elliptical and spiral.
This is necessary for testing the method of Sersic index (ns) calculation in
statmorph program. To find such bimodality we use B-V color index from VIPERS
database.
  To perform the error analysis of morphological parameters we simulated galaxy
images with random background of different magnitude and estimated the errors
as dispersion of the parameters. We also found asymptotic values of errors of
morphological parameters by increasing the numbers of mock images.
  To analyse the possible variation of each morphological parameter during the
convolution of close galactic images, we have simulated them to research. In
the result of this investigation we have analysed the dependence of the every
morphological parameter from CAS and Gini/M20 statistics from the distance
between galactic centers.
  The differences between our results for VIPERS and Gini-M20 distribution for
PanStarrs galaxies at z<0.5 could be explained it by cosmological evolution of
galaxies. We found out that in modern Universe there are much more elliptical
galaxies than at z>0.5 which corresponds to VIPERS sample. Also we concluded
that galaxy mergers were more frequent in the early Universe.
