Image Height Map Program

This is a program in the Processing language that creates image height maps from JPG and other supported file formats. It has decimation with averaging and a dots per inch adjustment, plus you can change the input filename to match your photo.
Note that it does not make a 3D version of the image, it just makes a box for each pixel and sets the height to each group of pixel's average intensity. The result, for the image shown does look a bit like a 3D image of my friend because her face is li