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By Torben Schou.
Developed as part of my PhD, it allows the player to use a number of head gestures to control the game, including the ability to...
The user can aim down the barrel of their weapon by rolling their head to the right, much like they would in real life.
Windowing(The Johnny Lee effect)
The user can perform a half spin by flicking their head to either side.
The player can look sideways and around objects in the virtual world by leaning their head.
Source SDK (free to download through Steam)
USB-2 Web camera preferably running at 640x480 @ 30Hz (web-camera IN your computer does properly not work!!!!)
Reasonable hardware (e.g. 2Ghz, 1GB RAM) running a dual-core processor
Frequently Asked Questions
The program doesn't run or it launches but I can't load the map...
Here are a few tips: Ensure the that program has been installed to the correct directory. In particular, Valve at one stage changed where Steam was installed (from c:/valve/steam to just c:/steam). As such make sure you are using the correct Steam directory. If you are, a head tracking folder (which contains bin, cfg, etc) should be placed within your steamapps/SourceMods folder. Likewise, a resources folder should be placed in your source sdk base folder and some additional DLLs should be placed within the source sdk base/bin folder. If it seems that the IPP Runtime did not install properly (meanings it is probably not listed under your Add/Remove Programs list), go to the Seeing Machines website and grab and install the latest version of the FaceAPI (Seeingmachines.com) as this will also include the lastest IPP Runtime.
The game starts, the map loads, I can hear sounds but the screen is black...
Unfortunately that version of the system occasionally suffers from a bug that results in the screen blacking out. To resolve it, turn off all the techniques and restart the game (by either typing _restart into the console or just quit it and start it up again). Once you done that, then just try turning on each technique, one by one. The program runs slowly... Try the following: Part of the tracking performance is determined by the web camera, so try to make sure it is running at least at 640x480 at 30 frames per second, which cannot be achieved using a USB 1.1 camera. Some of the web cameras come with software that will try to automatically adjust the exposure, brightness, contrast, etc, of the image. This often kills the tracking performance, so try to use manual settings instead. As long as your lighting conditions do not dramatically change, the tracking should improve. Ensure your computer has at least a dual core processor
I want to put head tracking in my application. How do I do it?
Follow my integration guide. Once you have something going, let us know what you are doing so we share it with the rest of the community! We really appreciate hearing about what you are doing with this technology. Can I use it on Windows 7? Now that Windows 7 is officially released, it seems that the issues that people were facing in the past have disappeared - so yes, you can use Windows 7. If you're still having issues, try setting the hl2.exe (in the source sdk base folder) to run under the XP compatibly mode. Thanks to everyone sent me an email about this issue Can I use this with a different game, such as Half-Life 2 or Call of Duty 4? Unfortunately not, unless you have the source for those games (which unless you're the game developer, you won't) Technically, it is possible to copy the content of other Source games (such as HL2) into the headtracking game, but legally I cannot distribute that content pre-bundled in.
The program seems slow to quit. Am I doing something wrong?
No, it's just that the system still suffers from a few teething problems. Either give the system time to shutdown or just kill it using the Task Manager. I cannot download the file. Why do I get a 404? The link changes every day to avoid people hard linking to it. As such, if you don't download the file soon after receiving the email, you'll get a 404. Furthermore, if you're timing is unlucky, you may only get a few minutes to download it (an oversight on my part, which I plan to correct at some stage). In this case, just request the download again.
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