What is the term for the smallest element of a three-dimensional volume?

What is the term for the smallest element of a three-dimensional volume?

• A. Pixel
• B. Element
• C. Voxel
• D. Cell

Answer: (C)

In three-dimensional imaging and modeling, the smallest element of a volume is called a voxel. A voxel is the 3D counterpart to a pixel: it represents a tiny cube-shaped portion of space within the volume and carries data about that region, such as density or color. Voxels form a regular grid across the volume, so the smallest unit you work with in 3D space is this volume element. Pixel is for 2D images, and a cell is a more general term used in other contexts like finite element analysis, not the standard label for a volume element in a regular 3D grid. So the best term for the smallest element of a three-dimensional volume is voxel.

In three-dimensional imaging and modeling, the smallest element of a volume is called a voxel. A voxel is the 3D counterpart to a pixel: it represents a tiny cube-shaped portion of space within the volume and carries data about that region, such as density or color. Voxels form a regular grid across the volume, so the smallest unit you work with in 3D space is this volume element. Pixel is for 2D images, and a cell is a more general term used in other contexts like finite element analysis, not the standard label for a volume element in a regular 3D grid. So the best term for the smallest element of a three-dimensional volume is voxel.