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Hacking the Kinect by Matt Parker, Daniel Herrera C., Florian Echtler, Nicolas Burrus, Jeff Kramer

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C H A P T E R  6

Voxelization

In this chapter, we’ll discuss voxelization and develop a people tracking system. We’ll cover the following:

  • What a voxel is
  • Why you would want to voxelize your data
  • How to make, manipulate, and use voxels
  • Why people are rectangles

What Is a Voxel?

A voxel is the three-dimensional equivalent of a pixel—a box, rather than a point, in space that has a volume. Imagine taking an object and then decomposing into cubes, all of the same size. Or, if you’d prefer, building an object out of LEGOs or in Minecraft, much like a cubist painting. See Figure 6-1 for an example of a voxelized scene.

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Figure 6-1. A voxelized ...

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