摘要
提出一种基于点数据的非网格绘制方法,对点数据不需进行网格化.如果已知点的法向,则对点数据直接进行绘制;如果不知点的法向,则通过近似计算,获取绘制时所需要的法向量.对绘制时可能由于点密度不足而产生的空洞,提出一种对点数据进行局部加密的方法加以解决,并模拟画家的绘画手法对由点数据生成的图像进行处理,以增强视觉效果.
A method was proposed by which the object is rendered by using the points directly if the normal of points is known and there needs no mesh at all. A technique was also proposed to solve the problem of ‘gaps＇ appearing on object＇ s picture caused by the lack of points during rendering by increasing the local density of the points. Furthermore, we simulated the drawing skill used by painters to improve the visual effect of the picture.
出处
《吉林大学学报（理学版）》
CAS
CSCD
北大核心
2005年第5期617-621,共5页
Journal of Jilin University:Science Edition
基金
教育部博士点基金(批准号:20010183041)
关键词
图形绘制
点数据
加密
图像处理
picture rendering
point data
densifying
image processing
