Blurring images is low pass filtering images. Sometimes you need to get rid of distracting details in order to get the whole picture.
Jay Clause‘s what Salvador Dali taught me about creative work will help you to (perhaps) get the whole picture. However, keep in mind that artists like to play with what the beholders of their work might want (or might not want) to percieve. Even without blurring, artists can deny anything you “see” in an ambiguous creation: They play with their own pareidolia as well as with the pareidolia of their audience.
Squinting helps you to see things. It’s fine to try that with artwork which has been intentionally created for such squinting. But better make sure that it was an artist who created the face that is looking at you. I don’t know whether Mars ever has been inhabited by artists.
Artists who have played with their own paredolia first, know how to play with the pareidolia of the beholders of their works.
Found today: Bycatch from my Snark hunt:
Illustrations by Henry Holiday (from The Hunting of the Snark, 1876) and Marcus Gheeraerts the Elder (Allegory of Iconoclasts, aka The Image Breakers, around 1567): In the “mouth” of Gheeraerts’ “head” a praying priest is depicted. The shape of the priest also is visible in the “mouth” of Holiday’s vanishing “Baker”.
There is more — with acknowledgments to Mahendra Singh, to John Tufail and to the Internet.
I started my Snark hunt in December 2008. http://www.artandpopularculture.com/User:Goetzkluge could give you an idea where I was in 2010.