This jpg is discernably "tileable"...
Anyway you choose to create it, using some 3D primitive like a tube, stitch together each "squozen" bit (wiki -> Escher). Then, once you've got your panel to size, using material editor place a GRADIENT RAMP on the assembly. This'll provide a z-depth heightfeild on that semi-flat "plane". Then Render-to-Texture using the slot for DIFFUSE and out should come a greyscale heightfeild image file of .tga extention.
By dialling-in the resolution in some of these dialogs, go high (in other words), you'll get an image suitable for use on the stack in the DISPLACEMENT modifier. And there you'll be able to dial-in even more detail once you've applied that to your plane or on whatever you plan to do the final "relief".