数学精度、要素属性正确性、逻辑一致性是当前地理信息产品质量检测的主要内容,其中精度和属性的检查多采用人工外业实地巡检方式,检测数据的获取具有离散性,属性正确性检查受人为因素影响较大,且该方法劳动强度大、成本高、效率低,对于特殊区域的检查实施困难。通过研究面向地理信息产品质量检测的低空机载激光点云、影像、视频及位置与姿态数据(position and orientation system,POS)的融合处理技术,提出了基于多源低空遥感数据的地理信息产品要素数学精度分类检测与属性评估方法。研究表明,本文方法能够有效用于地理信息产品的质量检测。
Mathematical precision, correctness of attributes and logical consistency are the main contents of current quality inspection of geographic information products. The inspection of precision and attributes mostly uses manual field inspection methods. This method has several problems: First, the acquisition of test data is discrete; second, the property correctness check is greatly affected by human factors; third, the inspection work has high labor intensity, high cost and low efficiency; fourth, it is difficult to do check and implementation work in special areas. In this paper, the technology of laser point cloud, image, video, POS (position and orientation system) and other data acquired by low-altitude drones for the third-party quality inspection of geographic information products was studied. The attribute evaluation of geographic information products based on multi-source low-altitude remote sensing data is proposed, and the method of mathematical precision classification detection is put forward. The experiment shows that the method proposed in this paper can be applied to the quality inspection of geographic information products.
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