I have been using Mathematica to generate test images. The images are designed to have a specific dimension and resolution. What I want is for the graphic as designed to be exactly exported as a tiff or jpeg conmpletely filling the designed-for size. Unfortunately, Mathematica wants to add a border to everything, so when the image is exported at the intended size, it includes this unwanted border, and the dimensions in pixels of the internal components have been altered.

Does anyone know how to eliminate this border?  Note that just chopping it off does not work because including it in the export already re-rasterized the image, so the internal components have changed in unspecified ways.

Regards,
David