If money is no object, commodity stereo equipment exists with better range than the Kinect. From Wikipedia:<p><pre><code> The Kinect sensor has a practical ranging limit of 1.2–3.5 metres
(3.9–11 ft) distance when used with the Xbox software.
</code></pre>
The Kinect was limited by cost, size, and the need to work in poor lighting conditions. But by spacing your higher-quality cameras out (increasing the baseline), accurate depth at 10 meters is a reasonable goal.<p>One such device: <a href="http://www.ptgrey.com/products/bumblebee2/index.asp" rel="nofollow">http://www.ptgrey.com/products/bumblebee2/index.asp</a><p>Accuracy chart: <a href="http://www.ptgrey.com/support/kb/data/stereoaccuracy.xls" rel="nofollow">http://www.ptgrey.com/support/kb/data/stereoaccuracy.xls</a> [XLS warning]