| Back in our graphics editing program (eg.
PaintShop - shown here) we can open up our objects again and then fill in
black all around them. This is very easy in this example because we are
simply replacing the white with black. However, let's suppose one of your
objects was a picture of a motorcycle parked on a street. And let's suppose
that you wanted JUST the motorcycle for your object and not all the
surrounding buildings, street etc. This is more involved, because you can't
simply use the fill tool to fill in black all around the motorcycle. In this
case you would have to zoom the picture in close and very carefully draw
black around the motorcycle (often one pixel at a time).
This process is called Blackening. |
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