I’m at FooCamp, and I’ve brought a copy of SVK fresh off the press to show some of the folk here.
The Make space at the O’Reilly HQ has Greg Borenstein showing the possibilities of Kinect-hacking, and we were playing around with pointing the UV torch that will come with SVK at the Kinect sensor… and found it punches a hole in the point-cloud of depth-data that the infra-red structured-light of Kinect senses…
It’s quite a striking ‘sensor-vernacular’ image, and my folk-physics explanation of it (at midnight last night, after some Lagunitas IPA) was that the UV was cancelling out the IR – but it might just be that any LED torch light source might have the same effect – just blowing out the sensor – can’t find anything online as yet…
I’m away from my physics–punching colleagues who would put me right in short-order I’m sure (as probably, someone here at Foo will today) but if you have any thoughts…
Update from Greg in email:
For the record, my bet is that the torch’s universe-whole punching power came from its plastic sleeve. Things that are reflective tend to do that by bouncing the IR back directly at the Kinect and giving it a blind spot. Check out the hole where Max Ogden’s eye should be in the scan we made of him last night:
Max wears glasses and his lens’ reflection caused this.
You can actually do wickedly clever things with a mirror and the Kinect to pull different bits of space into the depth image. It’s like being able to cut-and-paste space. For example, Kyle McDonald is trying to use the trick to scan all sides of an object at once.
I like using it to make wormholes…


















