基于象素的椭圆窗口的剪裁算法的研究

通过对现有剪裁算法的深入研究,我们发现这些算法只能对直线等简单的图形对象进行裁剪,而对自由曲线、不规则图形这些复杂对象则不适用。本文提出了一种新颖而有效的裁剪方法,该方法可以在椭圆窗口下对任意图形特别是图像进行裁剪,尤其是对于复杂的对象尤为有效。本方法裁剪过程简单、适用面广,有效解决了复杂图形的裁剪问题。

By a further study on the existing algorithms for graphics clipping, we＇ve found that the algorithms can only be used for simple graphics （such as straight line） clipping and not for complicated graphics （such as free curve and irregular graphics）. This paper brings up a novel and practical clipping algorithm for arbitrary graphics clipping under the oval window. Moreover, the more complicated the graphics or image is, the more effective the algorithm has. The algorithm can solve the problem of some complicated graphics clipping and can also be used simply and widely.