Parallel Subpixel Scanconversion
نویسنده
چکیده
Computer graphics and its subsections image processing, image analysis and image generation are known to be a wide field for the application of parallel archi tectures. While in image processing and analysis the demand for "real time" com putation is in the center of discussion, it becomes more and more important in the field of image generation, too. Some applications, like sequences of realistic appearing images raise highest demands on algorithm and architecture as well. We want to tackle the problem of image generation on a raster device. This computation can be subdivided into the geometric processing (including transfor mations and clipping) and the pixel processing (including scanconversion, visibility computations, anti-aliasing, and shading). You can see that in the first phase this is an object oriented computation and in the second phase it's a pixel oriented compu tation (figure 1). Both in the first and second phase parallel processing is possible. The attempts to the parallelization can be classified according to this subdivi sion. There are obj~t oriented, pixel oriented (or more generally: image space oriented) and hybrid solutions. As a result, the boundary between pixel oriented and object oriented processing is often pushed to the periphery, including draw backs in the computational speed.
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تاریخ انتشار 1987