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Extraction: Advanced Methods00:56

Extraction: Advanced Methods

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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Collecting and Processing Drone-based Remotely Sensed Data for Use in Forest Recovery Monitoring
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一种基于融合的多功能双阶段方法,用于从遥感图像中提取机场石坑.

Yalun Zhao1, Derong Chen1, Jiulu Gong1

  • 1School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China.

Entropy (Basel, Switzerland)
|December 24, 2025
PubMed
概括

这项研究引入了一种新的两阶段方法,可以从遥感图像中准确地提取机场跑道石坑. 这种方法有效地处理了诸如阴影和不规则的石坑边缘等具有挑战性的条件,改善了损害评估.

科学领域:

  • 遥感 遥感 遥感 遥感
  • 地理空间分析的研究.
  • 图像处理 图像处理

背景情况:

  • 准确地提取机场跑道损坏对于运营规划至关重要.
  • 带有黑暗干扰 (树木,阴影) 和不规则的石坑边缘的高图像挑战了石坑的检测.

研究的目的:

  • 开发一种强大的方法,从遥感图像中提取机场石坑.
  • 提高损害评估和作战规划的准确性.

主要方法:

  • 一种结合多功能融合的两阶段方法.
  • 第一个阶段:根据火山口形状对边缘弧段进行分组和匹配.
  • 第二阶段:使用区域分布和标记点处理进行石坑建模,并采用近区域寻找边缘梯度的搜索策略.

主要成果:

  • 在跑道周围 (89% R, 87% P) 和跑道内 (94% R, 92% P) 实现了高回忆力 (R) 和精度 (P).
  • 与现有的算法相比,拟议的方法在回忆和精度方面都表现出优越的性能.

结论:

  • 多功能融合双阶段方法准确地提取机场石坑,即使在具有挑战性的图像条件下.
  • 这种技术提高了损害信息的可靠性,用于随后的评估和规划.
关键词:
挖掘火山口 挖掘火山口 挖掘火山口损害信息提取损害信息提取图像处理是图像处理的过程.多功能的多功能.

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