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Depth Sensor Data Details RRS feed

  • Question

  • Where do the 13 bits in millimeter units come from?  Is more information about the depth stream data and/or any processing that the driver might be doing on the raw data available?  Thanks.
    Friday, June 17, 2011 4:18 PM

Answers

  • All depth values are measured from the Kinect sensor. Imagine a line drawn along the length of the Kinect, then the depth values are all measured at right-angles to this line.

    Kinect
       |--------------> Depth
       |
       |-------------------------------------------> Depth
       |
       |-----------------------------> Depth

    The depth values are not continuous and not completely linear, i.e. you will find that only certain (quantized) values appear as an object gets further away from the sensor. However, for most work at a range of around 2 meters the data will be good enough and accurate to within about a centimeter.

    Trevor

     

    • Marked as answer by Adam Sobieski Friday, June 17, 2011 8:06 PM
    Friday, June 17, 2011 4:59 PM

All replies

  • All depth values are measured from the Kinect sensor. Imagine a line drawn along the length of the Kinect, then the depth values are all measured at right-angles to this line.

    Kinect
       |--------------> Depth
       |
       |-------------------------------------------> Depth
       |
       |-----------------------------> Depth

    The depth values are not continuous and not completely linear, i.e. you will find that only certain (quantized) values appear as an object gets further away from the sensor. However, for most work at a range of around 2 meters the data will be good enough and accurate to within about a centimeter.

    Trevor

     

    • Marked as answer by Adam Sobieski Friday, June 17, 2011 8:06 PM
    Friday, June 17, 2011 4:59 PM
  • Thanks for the answer, Trevor.  The specific heuristics upon the raw sensor data, including calibration, remain interesting.  Documentation, from the optics and sensor vantage point, might be interesting to read at some point.  Thanks for the description of the new data format.

    Friday, June 17, 2011 8:06 PM