This is the best I've found so far: http://www.tlhiv.org/rast2vec/
It works otherwise ok except that it does not support PNG transparency (it's simply gone in the resulting vector).
This is the best I've found so far: http://www.tlhiv.org/rast2vec/
It works otherwise ok except that it does not support PNG transparency (it's simply gone in the resulting vector).
Try Inkscape.
It can vectorize bitmap (look for the proper function in "Path" menu) and exports result to .eps or .pdf file. It handles transparency as well.
Several ways I know of: