Making a Lenticular Mosaic

Awhile back Casey posted about lenticular ("morphing") mosaics.  These are mosaics that change depending on the viewpoint.  Daniel Stoeffler, who made the Harry Potter/Voldemort mosaic, let me know that he has written up a post on MOCpages about how he made this mosaic.  Unlike the other two mosaics shown in Casey's post, this one uses 45 degree slopes and inverted slopes instead of the 30 degree cheese slopes.  The following image shows the basic idea of how it is done. 

You can read the post on MOCpages for a much more complete description of the process.