Algorithm allows accurate encoding and decoding of 1786 levels of grey within a 24-bit image; text overview, sample images, and a Java test program can be found at this site.
"This paper covers the techniques of Polygonal Simplification in order to produce Levels of Detail (LODs). The problem of creating LODs is a complex one: how can simpler versions of a model be created? How can the approximation error be measured? How ...