Abstract: 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.

Key words: picture rendering, point data, densifying, image processing