Hi-Res Aerial Photo of Disneyland Here's a new photo trend for you: Super-megapixel stitching together of images to create exteremely high-res digital images. We call it (you heard it here first, folks) Gigapixel-ing, and it seems the craze is taking over people with a bit of time on their hands, some great high end images, and Adobe Photoshop. This one of Disneyland was made with 150 tiles all stiched together in Photoshop.
C'mon, Todd. Think big!! Put enough of them together and they could scary enough to be terror pixels! Isolate just one, take it home with you, and you could end up with a petrapixel!
I started doing this with maps and air photos a few years ago. There's no need to do this, of course, with USGS topographic maps (they are readily available already stitched together). But the British don't publish their Landranger maps like this; you have to download them from www.multimap.com and stitch them together in Photoshop. You can also stitch together US air photos from Terraserver at terraserver.microsoft.com, although this isn't as easy as the Landranger maps. Other online map services exist; I found a great map of London at the official website for the City of Westminster.
In all these cases, the secret is to display the map image, then save it to disk, then move up or sideways to the next image. Lather, rinse, repeat.