Amazing T-rex illusion

There is a Youtube video going around with a paper T-rex that seems to turn its head as you walk past it. Check it out.

You can actually download the T-rex for printout and make your own T-rex illusions at home with your kids. Here are the direct links:

GreenT-Rex image
http://i.imgur.com/vBDV8o5.jpg

Red T-rex
http://i.imgur.com/80DDCYy.jpg

Blue T-rex
http://i.imgur.com/Z8lZnoK.jpg

And here is what the filmmaker writes about the video.

This is based on the famous dragon illusion which was inspired by Jerry Andrus. I’ve always wanted to try this illusion with several of these at once. I wanted to use 20 or 30 but after I tried a test with only 12, I realized 20 or 30 was going to be too many. So another thing I’ve always wanted to try was to have a large version. The original file was about 9 feet X 9 feet. I had to split the image into 4 files so the printer as my local print shop could print it. I traced all of the pieces on cardboard which I used to build a support structure for the prints. I used small pieces of cardboard and hot glue to make the structure really solid. One problem that I had was that the paper for the large dragon was really shiny. So if you look closely you can see the reflection of the eyes on the “top” and side panels. I bought some matte spray to try and minimize the reflections. It worked a little. Over all I was happy with the results.

The t-rex design is an original design used with the Gathering for Garder 3D dragon template. The original 3D template design (dragon) was inspired by the work of Jerry Andrus to celebrate Gathering for Gardner 3. http://www.thinkfun.com