摘要
利用平面上的射影变换定义二阶曲线上的射影变换,并得到如下几个主要结论:二阶曲线上的射影变换一定是二阶曲线上有限个透视的合成;二阶曲线上的对合一定是透视;平面上的射影变换将二阶曲线上的透视变为二阶曲线上的透视。
Use plane projective transformation definite the quadratic curve projective transformation, and obtains the following several main conclusions： In the quadratic curve projective transformation is certainly in the quadratic curve the limited perspective synthesis; In the quadratic curve involution is certainly a perspective; In the plane projective transformation becomes the projecting mapping in quadratic curve to the projecting mapping in quadratic curve.
出处
《廊坊师范学院学报（自然科学版）》
2009年第1期9-11,共3页
Journal of Langfang Normal University(Natural Science Edition)
关键词
射影变换
透视
透视中心
射影映射
projective transformation
perspective
centre of perspectivity
projecting mapping
