To improve the realistic effect of smoke simulation, a real time smoke shadow simulation algorithm based on direct projection and diffusion is proposed.
为了提高烟雾模拟的真实感，提出了一种基于直接投射扩散的烟雾阴影实时生成算法。
In this paper, we acguired a way of seeking shade and shadow of spheric surface in orthographic axonometric projection drawing by means of changing axonometric projection.
文章论述了如何用变换轴测投影的方法求圆球正轴测图的阴影。
Binary image is filtered by utilizing morphological filter. Then, using the information of stone shadow and projection transform, detection and position of stone is utilized in part environment.
在获取分割后的二值化图像中，采用了形态学滤波算子进行去噪，然后利用二值图像投影变换，并参考石块底部阴影位置信息，辅助完成对部分场景下的石块识别和定位。
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