How to convert 2D BMP images to 3D STLs?

The basic principle is to take a regular 2D image (in BMP format) and translate the
image’s gray shades into a 3D height map (Figures 1 and 2). The two-dimensional
array (i.e. color) of each element is interpreted as a height value in order to store
information on the height of each point. For example; the white points are flat, the gray
points are higher and the black points are the highest.

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The following steps in this procedure were accomplished using Microsoft®
Paint image viewing software and Materialise® Magics STL editing software,
and make reference to the menu options in those applications. Other similar
software programs may be used to accomplish this procedure.

Answered with a tutorial: https://grabcad.com/tutorials/how-to-convert-2d-bmp-images-to-3d-stls

 
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