hugin - a gtk tool to create any kind of 360° pics out of a bunch of pics. if we take the basics: autopano and enfuse we could just build a 360° pic out of it, splitting in fourth isnt that hard...
autopano (auto pan and asign overlapping points) is the easy step but stitching it together needs some more power...
On my SE W880i the camera has a 3stitch mode where you see the last pics edge in the finder to align by yourself, pics arent that good but that can be improved, with that you could just split the pic in fourth afterward and you'r done