As humans, we have a very natural ability to see images in random patterns. Frequently, people see patterns with which they are most familiar. Faces are common and hence people often see images of Jesus or Mary on tortillas and grilled cheese sandwiches, in wood grain, in patterns of smudges of all sorts.

This one is particularly shroud-like. Was it graphically enhanced? I wonder. If not, it is a great example of pareidolia.

image 

You can find several examples at http://www.smosh.com/smosh-pit/photos/20-jesus-sightings