1. A method of generating an image of a scalable graphical object for reproduction on a display device, said method comprising the steps of: providing a pixel map and a scaling factor, the map being a representation of at least of portion of the image with each pixel of the map corresponding to a pixel of the image and having a corresponding pixel coverage representation; for at least one pixel in the map: identifying the pixel coverage representation associated with said pixel, and determining a pixel coverage value for said pixel using the pixel coverage representation and the scaling factor; and rendering the scalable graphical object using the determined pixel coverage value for said pixel on the display device.