...is used to merge multiple Images to one Image. For every
Pixel, a "majority-vote" decides from which original picture the
pixel is taken. Things, that are only visible on a minority of
the images are not copied into the new image. This makes it
possible to remove e.g. tourists from the picture of a building,
if you assume, that most tourists move more than the building.
It is certainly useful, to take the pictures from a tripod and
be careful, that no tourist stays at the same place in most
pictures. Of course, you should not expect wonders: If the
colors of the building and the colors of the clothing of one
tourist are similar, it could happen, that the software makes
the wrong decisions. If you provide the command line option "-k"
(keep), the program takes for each pixel the color, that is
furthest away from the "majority-color". Every ten rows of the
original jpeg-files the programs prints how many rows are
processed and how many there are to process. This can be turned
of by giving "-q" as option. Warn