* example of the use of erosion and propagation
* to select objects on their size
read cermet       * read the cermet image
thresh            * threshold the image
inv               * invert the bitplane
bcop 1,2          * and save for later
ero 10,1          * find  objects > 20 by erosion
prop 30,1,2,6,0   * and retrieves them in the original