How the Kinect Depth Sensor Works in 2 Minutes

226,301

2,391 0

Published 2013-02-16

The kinect uses a clever combination of cheap infrared projector and camera to sense depth.
References:
• Video
www.google.com/patents/US20090185274
campar.in.tum.de/twiki/pub/Chair/TeachingSs11Kinec… (p. 33)
en.wikipedia.org/wiki/Range_imaging (Stereo triangulation)

All Comments (21)

@zhang28155 10 years ago

I can hardly find a word to express how much you have helped in my research study using kinect. Thank you!
@CuriousInventor 10 years ago

Glad it helped! The best thanks is a link to this video from a website or forum.
@CuriousInventor 11 years ago

I believe the important thing about the pattern is that it's random, so that the camera can differentiate between groups of specs. The broader term for this is "structured lighting". Google Structured-light_3D_scanner
@DilipLilaramani 8 years ago

Thanks, you're a good presenter. Simple & Concise :)
@Bezeoner 10 years ago

I've checked your channel and can confirm, you're a genius.
@AndersGustafsson87 9 years ago

incredibly well explained and simple video.
@CuriousInventor 10 years ago

Good clarification. Should have said irregular pattern instead of random. I wonder if the dot pattern is the same on each one, or they're all calibrated to their own pattern.
@poltergeistish 9 years ago

Very clear and concise. Great ! Thanks !
@CuriousInventor 11 years ago

SketchUp, Bamboo Tablet, Serif DrawPlus, CamStudio. All the drawing scenes are usually sped up during the editing process.
@tanajikamble13 9 years ago

Please let me know how kinect comes to know the angle of speckle pattern pattern..?
@fknrdcls 11 years ago

Fantastic! I knew there was a reason I subscribed!
@MaestroMinito 10 years ago

Good! Easy to understand the theory!!
@jayeshkurdekar126 2 years ago

Thanks for your knowledge
@alaaabd2598 9 years ago

Good! Easy to understand the theory.....can you tell me how can i used it with matlab?
@CuriousInventor 11 years ago

Totally guessing here, but I suspect there's some variance in the manufacturing, and that each unit gets calibrated at the factory.
@bluemeat8299 9 years ago

so does the camera recognise each part, ie the sectors in the red grid example, via unique speckle clusters?
@ma888u 7 years ago

Thank you very much! This was a very helpful video!!! ;-)
@magicbuskey 11 years ago

thank you! that was great!
@exnol 11 years ago

Good one. Can you tell me what software you are using for the drawings?
@iAnimationProduction 10 years ago

hows does an IR sensor help to calculate the depth better compared to a secondary camera? Can you please explain that part again?