Protocol for Quantification of Defects in Natural Fibres for Composites

Algorithm 3

Coefficient of variation method for defect area.

for    do

               Binary image mask with threshold =

                  Amount of non-zero pixels in

end for

for   =   do

   for   =   do

      = +                   Sum of foreground areas

   end for

    =                   The mean of the foreground areas

   for   = −   do

       = +             Sum for calculating the standard deviation

   end for

    =                      The standard deviation

    =                          Coefficient of variation

end for

= index           The placeholder of that contains the lowest value