Our Scientific paper

Abstract:

In this paper, we will be researching what the future of 3D cameras will be. This topic is subdivided in three categories: (1) mapping or recording, (2) standalone interaction and (3) enhanced interaction.
Our research is mainly based on experiments performed by others and our personal experience[1]. We also used research material from touch screens and we compared the 3D camera to similar existing techniques. To confirm these deductions, we had an interview with Jan Derboven, researcher in touch interfaces and gestural interaction from the K.U. Leuven.
The results showed that mapping cameras have a great future once the resolution and accuracy increases. Standalone 3D cameras will only be successful as long as the interactions are kept very basic. To overcome this limitation, enhanced interaction provides the solution.

Full paper:

Download here

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2 Responses to Our Scientific paper

  1. First of all, we appreciate that you took the time to read our paper!

    And then; the technical stuff. You might have noticed that we didn’t go into much detail concerning 3D cameras. So we’ll enlighten that a little bit here. The camera that we borrowed from Softkinetic (our thesis company) uses infra-red LEDs. LEDs are not known for parallel beams of light, but in fact diverge a lot. This allows for few control where the light will appear.

    On the other hand, there is the Kinect camera that uses laser already. This provides greater resolution and control to where the infra-red dots will appear. In improving the resolution, many factors are of importance. Sadly, all the hardware specifications are kept secret, so we can only guess here.
    In general there are 4 areas that can be improved:
    * The quality of the laser: power of the beam and divergence
    * The quality of the ‘mirrorsystem’: Not entirely sure if it’s done with mirrors, but the point is that with 1 laser beam, an entire area should be covered. The more accurate this system works, the better the result
    * The quality of the chip that receives the light again
    * The processing done on the data & the speed that new data arrives

    The privacy issue is another aspect that’s always a big topic, no matter what technology used. Let’s say that it can always be abused. To put this into bigger context, you’re already tracked and looked at everywhere (don’t even bother arguing with that ;-)): Use your ‘extra korting’ card in a shop, and a database of what you buy is kept. Have a GPS in your car, and data is sent to a database. Buy a smart-meter system for your powerconsumption and the manufacturer can see when someone is home and estimate what is currently going on.

    • Well, it’s hard to say things about the internals of those cameras. Secrecy is big amongst the 3D cameras! Things related to the power of the laser can be found http://skeptics.stackexchange.com/questions/2625/is-the-kinect-ir-laser-safe. The detection is indeed done by looking at the reflection of the laser. But a simple light dot is good enough!

      At one single moment, there is only 1 point lit (depending on the technology). The kinect only has 1 laser that is moving all the time to a new position. Then the sensor waits for that light beam to arrive back on the chip. Now we know the time for that 1 pixel, and thus how far it is.

      It’s quite interesting material 🙂

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