Comment 1 for bug 253261

The image to which you refer is copyrighted Massimo C. Maggioni <email address hidden> and licensed with the GPL-2. Note that in the package's copyright it is clearly written:

Only images that showed good evidence of self-authorship were included in this package

I would therefore advice you to contact the copyright owner directly (it would help if you have some info about the copyright and/or license of what you think is the original image).
You may also want to talk with the current Debian maintainer: Krzysztof Burghardt <email address hidden>