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Accuracy assessment of aerial triangulation using different format of aerial photograph and digital photogrammetric software

机译:使用不同格式的航拍照片和数字摄影测量软件进行的空中三角测量的准确性评估

摘要

The advancement in digital photogrammetry has made photogrammetric technique become simpler, faster and lower cost. This method is popular in covering large and small area. This paper discusses about the experience of processing a strip of large format aerial photographs and two strips of small format aerial photographs using different digital photogrammetric software. The study area covered is the area of Universiti Teknologi Malaysia main campus and its surrounding area. Secondary data of ground control points and check points established using rapid static technique of GPS were used. In this study, two digital photogrammetric softwares were used for image processing and produce several photogrammetric output such as aerial triangulation, DTM and digital orthophoto. Two types of analysis were carried out that are point and visual analysis. The results showed that the large format aerial photograph produces more accurate compared to small format aerial photograph. Also it was found that the results of one of the digital photogrammetric software is superior that the other software. This study proved that digital photogrammetry can be utilised to process large and small format aerial photograph at sub-meter accuracy.
机译:数字摄影测量技术的进步使摄影测量技术变得更简单,更快,成本更低。这种方法在覆盖大面积和小面积时都很流行。本文讨论使用不同的数字摄影测量软件处理一条大尺寸航拍照片和两条小幅航拍照片的经验。研究区域是马来西亚Teknologi大学主校区及其周边地区。使用了通过GPS快速静态技术建立的地面控制点和检查点的二次数据。在这项研究中,使用了两个数字摄影测量软件进行图像处理,并产生了一些摄影测量输出,例如空中三角测量,DTM和数字正射影像。进行了两种类型的分析,即点分析和视觉分析。结果表明,与小幅面航拍相比,大幅面航拍产生的精度更高。还发现,一种数字摄影测量软件的结果优于另一种软件。这项研究证明,数字摄影测量法可用于以亚米精度处理大型和小型航空影像。

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