History: -Height Map

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Height Map - A two-dimensional, generally 8-bit greyscale bitmap that is used to represent a three-dimensional mesh, generally a terrain. The value of each pixel in the map is translated into the height for a vertex or series of vertices when constructing a mesh. Normally, black is "0" and white is "255" and the shades of grey in between are heights between 0 and 255. Also 16-bit grayscale bitmaps are possible for finer differentiation. Then white has the value 65,536.

Example for a terrain (texture + height map):

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