Lets say I have an image like this:
http://www.viralvideokc.com/wp-conte.../Navy-Logo.png

And I want to generate a 3d model of a medallion from it, like these:
http://www.officialframes.com/image/medallion.jpg
http://upload.wikimedia.org/wikipedi...ion_Gold_1.jpg

is there an automatic/semiautomatic way to generate it, or do I need to model it all by hand?
Thanks.