[Gta04-owner] Inertial measurement unit

[Xavi Drudis Ferran]

On Tue 06/03/12 14:23 , Denis Shulyaka <shulyaka at gmail.com> wrote:

> Since GTA04 has a 3-axis gyro and a 3-axis accelerometer, it is
> possible to build an IMU with 6 degrees of freedom - a device that is
> capable to tell its location and orientation at every point of time.
> It was not possible with GTA02 because it only had 2 accelerometers.
> The IMU could have many interesting applications like quadrocopter
> controller, advanced gestures recognition or a tracking device where
> GPS is not accessible or not accurate enough.
> Imagine yourself painting a picture in the air with your GTA04 instead
> of a brush and then saving it as a jpeg file. Or pointing to a
> specific lamp in your smart house to switch it on or off (which also
> requires some additional hardware in the house though).
> As I know, all this requires some advanced math, that I'm interested
> in. Do you know any open projects of creating an IMU, or any links
> that would help to understand the math behind it?

No idea. I've heard of some project aiming at recoignizing body gestures
with 3D cameras, but I think it has nothing to do with what you need. 

Another nice application would be a toponomic viewer. You go on a sightseeing trip 
(walking, but not necessarily), 
and the GTA04 finds where you are by GPS, downloads topographical maps 
and builds a 3D model of the landscape around you. You "watch" the landscape
"throgh" your GTA04 screen and it's like looking through a window into a 
3D model where mountains, villages, rivers, etc. are labelled with their names.

I guess the 3D capabilities in GTA04 aren't very good with free software only, 
but I hope it's not that much work for the CPU to come up with a simple 
3d model and render it as you move the phone...