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相关概念视频

Methods of Obtaining Topography01:25

Methods of Obtaining Topography

Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...

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相关实验视频

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沙表面模型的建造:一种战略方法,从运动中构建结构 - 多视图立体声.

A T S Ferreira1,2,3, Carlos Henrique Grohmann4, Maria Carolina Hernandez Ribeiro5

  • 1Technology in Environment and Water Resources, São Paulo State Technological College of Jahu, Jaú 17212-599, SP, Brazil.

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|April 18, 2024
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概括

本研究介绍了一种具有成本效益的陆地光谱法,使用SfM-MVS (Structure from Motion-Multi View Stereo) 进行海造型. 用这种可访问技术准确地绘制沿海地图,地面控制点 (GCP) 的战略位置至关重要.

关键词:
沙形态 沙形态沙调查调查 沙调查在GNSS中使用GNSS.这是一种摄影计量技术 (photogrammetry).沙表面建模的策略与结构从运动 - 多视图立体声结构来自运动.

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科学领域:

  • 地质科学 地质科学
  • 沿海工程 沿海工程
  • 这是一种摄影计量技术 (photogrammetry).

背景情况:

  • 传统的海造型方法 (地形调查,GNSS) 通常是昂贵和耗时的.
  • 陆地光谱仪为沿海监测提供了一个潜在的更有效的替代方案.

研究的目的:

  • 为了评估海造型的SfM-MVS (Structure from Motion-Multi View Stereo) 方法的效率,成本效益和简单性.
  • 评估地面控制点 (GCP) 和检查点 (CKP) 分布对沿海地图绘制中SfM-MVS准确性的影响.

主要方法:

  • 利用陆地摄像度与12兆像素摄像头进行图像采集.
  • 使用Agisoft Metashape 专业软件处理图像.
  • 通过GNSS校准的GCP和CCP进行验证的准确性.

主要成果:

  • 与传统技术相比,SfM-MVS方法证明了效率,成本效益和简单性.
  • 根据GCP分布观察到位置精度的显著变化.
  • 为了可靠地绘制沿海地图,GCP和CKP的最佳分布至关重要.

结论:

  • SfM-MVS是沿海监测的强大且易于使用的工具,可以使用智能手机等常见设备.
  • 为了最大限度地提高SfM-MVS在沿海环境中的准确性,GCP和CKP的战略分布至关重要.
  • 这项研究促进了沿海管理的有效和可访问的海形状监测.