Lumitrack: Low Cost, Precise, High Speed Tracking with Projected m-Sequences

http://chrisharrison.net/index.php/Research/Lumitrack

by archgrove • 13 years ago

87 7 13 years ago

oakwhiz• 13 years ago

This is an absolutely brilliant use of LFSRs.

feniv• 13 years ago

Most of the other novel computer interaction peripherals (like Leap Motion) are in the $100s price range. The $10 price point could really make this popular, especially with the hacker and maker community.

sadfaceunread• 13 years ago

Impressive, but if I think back to some old examples of this kind of stuff, like Johnny Chan (also of CMU)'s headtracking/motion tracking with Wii-motes it had remarkably less data (IR Led points) but seemed to handle the type of usecases presented in the video just fine. Admittedly it uses camera technology rather than just photodiodes, so lumitrack seems to have an edge for things that need high speed/fidelity at very low cost, but I don't know what those applications are.

greendestiny• 13 years ago

Head tracking would definitely be one. Although rough position tracking with accelerometer rotation tracking might work just as well. Still these are much lower cost than all the hardware that went into the wiimote head tracker.

utopcell2• 13 years ago

you'd think that this setup would be much lower cost, but from a quick lookup, these linear sensors (TSL202R) cost more than $8 each in 1k quantity, while you can get a wii controller for about $20. On the other hand, this setup allows for 1000 fps while the wii controller's camera works at 100 fps.

smilekzs• 13 years ago

From what I could imagine, this is using De Bruijn sequence, and only tracking 2D, right?

utopcell2• 13 years ago

it can also do 6DOF, but yes, it is a variation on De Bruijn sequences (as these sequences don't wrap around)

Lumitrack: Low Cost, Precise, High Speed Tracking with Projected m-Sequences

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