I began with Escher's Relativity and eventually decided to use Photoshop and erase all people and handrailings (and by the end most doors and arcs as well). Escher was very good with his perspective but even small errors show up after 300 points. So yes, I have a total of 321 points and 163 polygons. More error was added to the picture after I erased and edited parts of the picture. I added a picture on the wall and some wood to steps which didn't show in the original picture. I decided not to clutter the image more and left some walls/floors blank.
The above artifact took many days and many headaches (especially trying to figure out where walls existed and the coordinates of points that don't exist), which should explain the simplicity of my second artifact.
I chose the image of blocks below and constructed a model from them. It turned out not to be quite as easy as I had hoped for a couple of reasons. One, the edges in the vertical direction end up being exactly parallel and the z-vanishing point couldn't be calculated. So I added a slight slope (and some error) to the image so the lines would intersect. The hardest part ended up being that the blocks weren't really oriented in any one coordinate system, they each had their own. I finally gave up and skewed the blocks a little just to calculate the points since there simply wasn't enough data in the image to acurately model the blocks (especially the bottom middle block which was missing half of its points and was in a different direction from all other blocks). This artifact has 54 points and 36 polygons. I grabbed images from other blocks off the web for the texture maps.
