Using the amazing http://codesearch.debian.net
one finds that levmar is included in rather many source packages in Debian:
hugin: some older version, probably patched
starlink-ast: parts of some older version from 2004
(teem: can be linked with levmar, but apparently is not)
Since most of the packages above are maintained by Debian Science, is there anyone who would want to take on a simple library package?
All included code is from an older version than the latest levmar-2.6, so making levmar useful in Debian would require a considerable amount of forward porting and fixing of upstream sources. On the other hand, having the same code in six source packages is already a pretty bad case of duplication.