Add function to get the better metrics of output to three dataset
Edit estimate_cov.m and gaussPDF.m functions to avoid bug by NaN or Inf Value. Changes on functions to get an unique data file among all the output files, to avoid errors of reading of files by different names or differents number of parameters. Edit function to get better parameters for compute the number of pixels misleading, changes to avoid errors by differents size of output files and comment the lines to visualize the results.