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。
An equatorial sundial is an ancient scientific equipment to tell time by using the shadow from solar projection. It consists of a sundial plate, a gnomon and a base.
赤道式日晷，是古人利用太阳投影测时的科学仪器，由晷盘、晷针和底座组成。
A change detection method regarding shadow and projection difference is designed by integrating texture feature differences, automatic shadow extraction and projection difference handling.
利用阴影差值图像消除纹理差值法变化检测结果中的阴影影响，取得了很好的实验效果。
A change detection method regarding shadow and projection difference is designed by integrating texture feature differences, automatic shadow extraction and projection difference handling.
利用阴影差值图像消除纹理差值法变化检测结果中的阴影影响，取得了很好的实验效果。
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