Consequently, a 3D camera requires peripheral circuitry to apply image processing to the two images, for example, to adjust color or to correct positioning between the images from the two cameras.

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With all the above boxes ticked, it is essential to have a plan once you have run the gauntlet of airport-style security -- there are 4, 000 Swiss troops in Davos this week -- and made it inside the newly-extended Congress Center with the correct color of identity pass.

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