We have several ways to access, process, and display images in the course.
The main starting points are listed below.
You add the functions by creating executable programs in your
directory. These functions are called by each button. You
should assume that the input image for your executable
is the image displayed in the viewer, and is accessable
from a temporary file tmp00.img. You should also put
your output into the same temporary file, tmp00.img. This
file will then be displayed by the viewer.