| 摘要 |
Computer-generated video images often suffer from ''aliasing''. A number of techniques exist which aim to generate images in an anti-aliased form, and many use the translucency technique, which involves a read-modify-write process when accessing the frame store in which are held the values defining each pixel. However, this technique has its own problems, necessitating a significant amount of hardware, and suffering from the fact that the final anti-aliased pixel lacks any subpixel information in the frame store to indicate which part of the pixel the object actually covers (the amended version of the image data has completely replaced the original data). Taking advantage of improvements in memory technology, whereby it is now feasible to construct frame stores with higher resolutions, the invention proposes a quite different technique for anti-aliasing. More specifically, it suggests a ''super sampling'' technique which maintains the stored image at a resolution that is significantly higher than that of the display system itself, and, at the output stage, converts this to the final display resolution. |
