一种基于视域的大地形无缝拼接算法

Novel Seamless Splice Algorithm for Large Terrain Based on Sight

针对地形拼接的过渡带存在缝隙、跳变、对比度强等问题,提出了一种基于视域的无缝拼接算法。介绍了算法的基本原理,研究了地形高程数据的组织方法,色彩空间的图像边界检测,像素特征点集对的提取与匹配技术,基于像素点距的径向加权图像融合技术等,给出了拼接步骤。测试结果表明,该算法提供了一种可靠的扩展接口,实现了过渡带的平滑处理,实时性与逼真度良好,且简洁高效。

In order to avoid the flaw including gaps, flopover and strong contrast in terrain splice transition, the novel seamless splice algorithm for large terrain based on sight was proposed. The basic principle of algorithm was introduced. Through researching the organization way of terrain elevation data, the border inspection of image color, the extraction and match technology of pixel feature point sets, the images fusion technology with radial weighted based on pixel size, etc., a continuous smooth effect was made according to splice procedure. The test results indicate that the algorithm is simple and efficient, and it can be well used on expansible terrain interface. It meets the need of large terrain splice in real time and fidelity.