Abstract: In order to model 3D realistic virtual outdoor scenes, a terrain texture synthesis algorithm is proposed based on multi-sample in this paper. By using terrain Digital Elevation Model(DEM) data and texture sources image, and synthesis rules defined according to elevation and slope, the algorithm synthesizes appropriate terrain texture image automatically. Experimental results indicate that terrain texture synthesized by this algorithm can better reflect true ground characteristic of natural terrain, and enhance visual effect of 3D terrain.

Key words: texture synthesis, terrain, multi-sample, slope, elevation, sense of reality

摘要： 针对三维虚拟室外场景的建模与绘制需求，提出一种多样图地形纹理合成算法。以地形数字高程模型数据和样图集为基础，根据用户自定义的纹理合成规则控制地形的高程值和坡度特征，并自动合成地形纹理。实验结果表明，利用该算法合成的纹理能够较好地反映自然界地形的分布情况，增强三维场景绘制的真实感。

关键词: 纹理合成, 地形, 多样图, 坡度, 高程, 真实感

CLC Number: 

• TP391