【摘要】 针对三维气象灾害研究平台中雪灾、雪崩的仿真提出一种积雪仿真模型,有助于灾害分析人员对这类气象灾害进行预防。利用基于RGB颜色向量距离的彩色图像分割算法区分图像纹理中不同的地貌;然后在已分类的地貌上,使用依据力学原理推导出的公式判断不同地形上能否形成积雪;最后依据计算结果对场景纹理图像进行处理,呈现出积雪覆盖的效果。实验表明,利用该模型可以在三维气象灾害仿真平台中产生积雪效果。更多还原

【Abstract】 The author presented a snow simulation model in the 3D meteorological disaster analysis system.It could help analysts prevent snow storm and avalanches.First,the author classified the pixels of the satellite remote sensing images by their color vectors’ distance.Each of the colors represents a landscape.Then the author derived a formula by using mechanics.This formula was used to determine whether or not the snow could be covered on different regions.These regions had same landscape but different topography.If the regions were determined covered by snow according to the formula,the snow color was used to fill the regions.After this process,the satellite remote sensing images were used as textures in the 3D meteorological disasters analysis system.The experimental results show that snow effects can be produced by the snow simulation model.更多还原