POTENTIAL OF DENSE MATCHING FOR THE GENERATION OF HIGH QUALITY DIGITAL ELEVATION MODELS
POTENTIAL OF DENSE MATCHING FOR THE GENERATION OF HIGH QUALITY DIGITAL ELEVATION MODELS
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DOI：
10.5194/isprsarchives-xxxviii-4-w19-271-2011
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发表时间：
2012-09
期刊：
影响因子：
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通讯作者：
M. Rothermel;N. Haala
中科院分区：
文献类型：
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作者：
M. Rothermel;N. Haala
直到最近，高质量数字高程模型的获取一直以机载激光雷达的使用为主。然而，数字机载相机的质量不断提高，加上最近在匹配算法方面的改进，使得基于图像的自动采集成为一种合适的替代方案。在本文中，这些进展将在使用半全局匹配(SGM)立体方法生成摄影测量DEM的实例中得到展示。由于该方法的目标是像素级匹配，因此可以生成密集的3D点云。本文描述的测试是基于最近一次摄影测量3D数据捕获测试中在不同飞行场景下从不同数字机载相机收集的数据。通过这些方法，可以评估不同立体声配置对最终结果质量的影响，并将其与已有的测试结果进行比较。对不同基高比的多个立体图像对进行分析和组合，可以有效地提高匹配结果的准确性和可靠性。
Until recently, the acquisition of high quality Digital Elevation Models was dominated by the use of airborne LiDAR. However, the increasing quality of digital airborne cameras in combination with recent improvements in matching algorithms meanwhile allow for the automatic image based collection as a suitable alternative. Within the paper, these progresses will be demonstrated on the example of photogrammetric DEM generation using the Semi-Global Matching (SGM) stereo method. Since this approach aims at a pixel-wise matching, dense 3D point clouds can be generated. The tests described in the paper are based on data collected from different digital airborne cameras at various flight scenarios during a recent test on photogrammetric 3D data capture. By these means, the impact of different stereo configurations on the quality of the final outcome can be evaluated and compared to already available test results. Special interest is also paid to the analysis and combination of multiple stereo image pairs with different base- to-height ratios, which can be used efficiently to increase the accuracy and reliability of the matching result.