*Body data consists of Voxel. The stereo containing Voxel can be represented by stereo rendering or by extracting the polygonal equivalent surface of the threshold contour. One is the smallest unit of digital data on the 3D spatial partition. Conceptually similar to pixels, the smallest unit of two-dimensional space, pixels are used for image data in two-dimensional computer images, while Voxel is used in three-dimensional imaging, scientific data and medical imaging. Usually, these data follow certain rules such as one cut per millimeter, and usually have a certain number of image pixels.