Really handy embossing in OpenSCAD tutorial from the Cubehero blog:
Sometimes, half the fun of 3D printing is being able to take other formats and convert them into something printable. In this case, we want to be able to convert an image into a surface, a process called embossing.
Embossing is where we take an image and raise the surface on the lightest parts of the image. Impressing is the negative image of embossing, more like stamping an image onto a surface.
To do this, we’ll use the surface() command in OpenSCAD and a command line tool called Imagemagick. If you don’t currently have Imagemagick, go install it, depending on whether you’re on linux (ubuntu), mac (or using binaries), or windows.
Once you have that installed, we can use imagemagick from the command line to convert our image to grayscale.
We’ll use the classic sample image from the field of image processing, lenna.png….
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