Cables. Economics. Parallel Tracking and Mapping for Small AR Workspaces (PTAM) PTAM (Parallel Tracking and Mapping) is a camera tracking system for augmented reality.
It requires no markers, pre-made maps, known templates, or inertial sensors. If you're unfamiliar with PTAM have a look at some videos made with PTAM. Here you may download a reference implementation of PTAM as described in our ISMAR 2007 paper (with the relocaliser from the ECCV'08 paper, and a Faugeras-Lustman initialiser instead of 5PP). This implementation was developed on Linux but should also compile on OSX and Win32 (With Visual Studio); please see the included README file for requirements and compilation instructions. Wallet-size LED Resistance Calculator. It’s like one of those online “LED resistance calculator” thingies, except that you can fold it up and put it in your wallet.
Begin by downloading the pattern here(512 kB PDF File). Print it in high quality mode on a laser printer, preferably on medium-weight “presentation” paper. For it to end up at the original size (that of a business card, 3.5 x 2″), you may need to disable automatic scaling on your printer. Next, cut out the pattern with scissors or a hobby knife, following the outline of both pieces. A straight edge may come in handy.
LED series parallel array wizard.