deletions | additions       diff --git a/A_rectangular_region_with_width__.tex b/A_rectangular_region_with_width__.tex  index d0cb110..a1d6a0e 100644  --- a/A_rectangular_region_with_width__.tex  +++ b/A_rectangular_region_with_width__.tex 
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A rectangular region area  with width 80 percent of the face rectangle width and height 20 percent of the face rectangle height is obtained, which is placed will be set  horizontally as a function of the face orientation, includes in its left and right ends the corresponding ear regardless in any case  of the particular specific  orientation. Fig. 14 shows illustrates  two images with the line pictures for those transport  that corresponds with for  the nose and the rectangular region extracted area is removed  from the face orientation that includes the ears. With the values of the depth image after the preprocessing stages in this rectangular region, the pixels with the lowest and non-null value in the left and right half are extracted. Fig. 15(a) shows an image with the depth values in this rectangular region. area.  Fig. 15(b) shows the regions areas  formed by the pixels with the lowest and non-null value in the left half and right half of the region. area.  The centers of mass of these two regions correspond relate  with the ears. \citet{gonzalez2014kinect} ears \cite{gonzalez2014kinect}.