Terrain synthesis has been a hot topic in the field of computer graphics and image processing. However, there are still issues in terrain synthesis where synthesis results are difficult to control and not realistic enough. To address these problems, this paper proposes an interactive terrain elevation map generation method based on the synthesis of a single sample terrain elevation map. First, we propose a method to extract the skeleton from a terrain elevation map and a user sketch. Second, we construct a skeleton sample feature map based on the terrain elevation map and the user sketch. Finally, we propose a matching cost function to match image patches of the terrain sample and the user sketch. The proposed method can obtain a synthesis result containing the features of both the terrain sample and the user sketch, and then generates a synthetic terrain elevation map. The experimental results demonstrate the effectiveness of the proposed method, where the synthesized results can meet the needs of users.

中文翻译：

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基于单样本和用户草图的地形高程图合成方法

地形合成一直是计算机图形和图像处理领域的热门话题。但是，地形合成中仍然存在合成结果难以控制且不够真实的问题。针对这些问题，本文提出了一种基于单样本地形高程图合成的交互式地形高程图生成方法。首先，我们提出了一种从地形高程图和用户草图中提取骨架的方法。其次，我们基于地形高程图和用户草图构建骨架样本特征图。最后，我们提出了一个匹配成本函数来匹配地形样本和用户草图的图像块。所提出的方法可以获得包含地形样本和用户草图特征的合成结果，然后生成合成地形高程图。实验结果证明了所提方法的有效性，合成结果可以满足用户的需求。