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# "Leap Motion": high res 3D motion detection

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Jan 1, 1970
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Jan 1, 1970
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#### AnimalMagic

Jan 1, 1970
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The video here reminds me of a theremin.

I'll bet you could easily write a "Theramin App" for that.

And considering the resolution, it would be quite precise.

I have "pad" apps for my iPad from Moog and Akai and other big names.

Really nice synth apps. The "pads' are similar in operation to the
theramin, only 2-D.

J

#### JW

Jan 1, 1970
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https://www.leapmotion.com/product

10 finger motion detection to 1/100mm (!), at 290 fps, in 8 cu ft of
space. $70. WOW! At the bottom of the page: * The Leap Motion controller works with Leap-enabled software only. Functionality may vary depending on software. How useful it becomes depends on how widely accepted it is, though. N #### Nico Coesel Jan 1, 1970 0 Bob Engelhardt said: https://www.leapmotion.com/product 10 finger motion detection to 1/100mm (!), at 290 fps, in 8 cu ft of space.$70. WOW!

Its just another Kinect but optimised to recognize fingers. IOW it is
a simple infrared webcam. The heavy lifting is probably done by the
host CPU.

J

#### Jon Kirwan

Jan 1, 1970
0
A single webcam would not give you range. Probably 2 webcams?

I wonder if the monitor's light is a requirement for it to
operate.

Jon

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#### josephkk

Jan 1, 1970
0
Bob,

Neat!

The video here reminds me of a theremin.

<https://forums.leapmotion.com/showt...ik-s-Cube-with-Leap-Motion-(not-finished-yet)>

That's $70 end-user price, which makes me wonder what the "innards" ( "line laser" plus linear photodiode array? ) would cost if integrated into another product. I also wonder what effect the technology behind this will have on the touch-screen panel market. Even the full retail$70 sounds like less
than the cost for adding resistive or capacitive touch-screen support
to, say, an LCD panel.

Frank McKenney

Not so much to add touch screen, maybe us$0.40 at assembly time. Maybe us$ 10 at retail.

Volume baby, volume, > 1E7/year.

?-)

D

#### [email protected]

Jan 1, 1970
0
I wonder if the monitor's light is a requirement for it to
operate.

Jon

The case appears to be a hard IR-bandpass filter, making that
unlikely.

There are some really interesting ideas here about lensless optics:

https://forums.leapmotion.com/archive/index.php/t-55.html

which lead to addt'l interesting topics. Point being that a lens sums/
redirects many source rays onto one point on the imaging array. That
destroys position information. If you don't do that, you can compute
position from the image, re-focus after the fact, etc. Neat stuff.

J

#### josephkk

Jan 1, 1970
0
Joseph,

Thanks for the update. I hadn't realized that the extra cost for
"touch" had fallen so low.

It may not actually be that low, but the volume is at least that high.
Every bloody smart phone and tablet; and a bit more.

?-)

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Ignacio G.T.
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~misfit~
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