Screen shot below features zooms of Boise Quilt & Pentagon Quilt and RFK Quilt #2 as the background image

American Stereography #3 is an interactive geovisualization webart environment that randomly projects two geographic tessellations side by side. By clicking on either the right or the left image, the viewer can alternate between scales of the original kaleidoscopic aerial photography. The foreground contains only places in America and the background features the reversed scale of places throughout Washington, DC.

Total Foreground Images:
136 = ZOOM-OUT
145 = ZOOM-IN

Total Background Images:
45 = ZOOM-OUT
67 = ZOON-IN

Number of Visual Combinations:
(136*67)+(145*45)+1[intro page] = 9179 + 6525 + 1= 15,705

##ADDED##
I decided to add a SMALL, MEDIUM, and LARGE link to project. I added this so that users can adjust the size of the images displayed on the computer screen. By adding these 3 options the project now has 47,115 different visual combinations

Screenshot below features Chicago Quilt #2 and Dupont Circle Quilt #2

Building off of American Stereography #1 this map uses the same HTML template.

These “zooms” aka details from the center, were created by taking the 800 x 800 center of an 18,000 x 12,000 map and were originally created to show central scale. Not all the maps I made in 2006 have this second zoom because the exact ceter was water, which doesn’t look very interesting.

The backgrounds are also the “zoom to the center” of the various DC maps.

Total Foreground Maps: 136
Total Backgrounds Maps: 45
Number of Visual Combinations: 6,120

I mentioned before that I was working on a means to do stereo projections. Well it turned out to be easier than I thought. I simply had to make the random image be the same image displayed on the left and right. It’s not what I’d call perfect stereography, but it’s a good start. I plan on making at couple more of these using the details from the exact centers of the maps.

The pixels used in this interactive map are, follow me here, a 4,200 by 4,200 section from a 18,000 by 12,000 map made in 2006, reduced to 800 x 800, then reduced again to 400 x 400. The reductions are done so the map zoom-ins both fit on the screen. The first reduction is what you’ll find if you click on the (more..) link on my quilt projection blog entries. The second reduction is done via the HTML on the webpage so people with screen width’s less than 1600 pixels wide will be able to see the imagery side by side.

The background is the opposite of Lost in America’s Last Colony and features places & spaces in Washington, DC. I might remove this altogether to make it easier on the eyes….

–>Wikipedia on Stereoscopy