摘要
图形裁剪是计算机图形学的基本内容,现有的图形裁剪算法大多都针对基本的图形元素———直线进行裁剪,在此基础上,出现了大量研究多边形裁剪的算法.象素级图形裁剪以基本的图形元素———象素为单位,介绍了象素级图形裁剪算法的基本思想和实现过程,在研制的图形显示系统平台上,提出了一种采用FPGA硬件实现象素图形裁剪的新方法,它适合于任意窗口,具有通用性;同时,这种硬件实现的图形裁剪与纯软件实现的算法相比,在裁剪速度上具有明显的优势.
The graphics clipping technology has been always an important topic in computer graphics research fields in these years; a lot of algorithms that clipping based on line as one of the most part of the clipping method are proposed in many articles. A new clipping algorithms based on pixel is presented; its thinking and implementation method is also described in detail. Based on pixel in the graphics display system, this algorithm is realized by FPGA hardware. This algorithm can be used in graphics clipping for all windows; and this new method based on FPGA has better performances when compared with that implemented by software. Experimental result shows that the new algorithm is all-purpose and has higher speed than ever before.
出处
《三峡大学学报（自然科学版）》
CAS
2006年第2期154-156,共3页
Journal of China Three Gorges University：Natural Sciences
关键词
计算机图形学
图形裁剪
象素
FPGA
硬件实现
computer graphics
graphics clipping
pixel
field programmable gate array （FPGA）
hardware implementation
