Abstract
There has been some researches for making a snowing scene by using the techniques of computer graphics[1-4]. They have used the simple models of the shapes and the motion of snow to reduce the calculation time, since their research interest was in reducing the calculation time rather than improving realistic images. Conversely, we focus on making more realistic scene of snowing rather than the cost of calculation. First we present the shape model of snow crystals besed on Nakaya-diagram[5]. Next we combine snow crystals to make a snow flake by applying the results of Magono-report[7]. From the shape information of snow flakes, we obtain some parameters for volume rendering which generates an artificial image of snow. Finally we discuss the motion of snow flakes for making snowing scene.
