Your bike doesn't look that low... I certainly wouldn't raise it up. Your pipes are lower than the frame though, so I'm not surprised you scrape. I think you'll either need to change pipes or live with it.
If you absolutely must raise it, all you need to do is loosen the locknut on the shock studs and turn them in equal amounts (effectively shortening the shocks). Tighten down the locknuts when satisfied.
i dont think it was lowered in that pic...........also that sucker will get quite a bit lower when a 6'5/280 lb man jumps on the back of it. I can deal with the scraping myself but im goin to a rally this weekend and my girl is gonna be on there with me. Its a little too much with us both on there...