This transformation allows the recovery of the original image
from a median axis image.
This routine is useful for displaying the modifications
introduced after any transformation of the median axis.
This transformation assigns the value 255 to any pixel whose distance
to at least one median axis pixel, is less than or equal to the value
of this pixel.
The user is referred to the man pages of the median axis routine as
an aid in understanding the inverse transform.
ADVICE:
For this routine, the image must be a byte image, with the gray level value of 0 for the background. The pixels that do not belong to the background are supposed to belong to a median axis, so it is advisable to use an image obtained from the median axis transform.
vgrow -i image1 -o image2
Computes the median axis transform.
For this routine, the image must be a median axis representation of an image (obtained from vmediaxis).