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相关概念视频

Extraction: Partition and Distribution Coefficients01:14

Extraction: Partition and Distribution Coefficients

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The distribution law or Nernst's distribution law is the law that governs the distribution of a solute between two immiscible solvents. This law, also known as the partition law, states that if a solute is added to the mixture of two immiscible solvents at a constant temperature, the solute is distributed between the two solvents in such a way that the ratio of solute concentrations in the solvents remains constant at equilibrium.
For extracting a solute from an aqueous phase into an...
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Residuals and Least-Squares Property01:11

Residuals and Least-Squares Property

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The vertical distance between the actual value of y and the estimated value of y. In other words, it measures the vertical distance between the actual data point and the predicted point on the line
If the observed data point lies above the line, the residual is positive, and the line underestimates the actual data value for y. If the observed data point lies below the line, the residual is negative, and the line overestimates the actual data value for y.
The process of fitting the best-fit...
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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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Reducing Line Loss01:18

Reducing Line Loss

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In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
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Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

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Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
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Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

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Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
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Magnetic Resonance Derived Myocardial Strain Assessment Using Feature Tracking
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红树林提取算法 基于直角匹配波器加权最小平方

Yongze Li1, Jin Ma1, Dongyang Fu1

  • 1School of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, China.

Sensors (Basel, Switzerland)
|November 27, 2024
PubMed
概括

一个新的直角匹配波器加权最小方形 (OMF-WLS) 算法可以从遥感图像中提取红树林. 这种方法显著提高了精度和边缘清晰度,这对于生态保护和区域规划至关重要.

科学领域:

  • 环境遥感 环境遥感
  • 地理空间分析的研究.
  • 生态生态学 生态生态学

背景情况:

  • 准确的红树林面积提取对于生态监测和区域规划至关重要.
  • 传统的算法与复杂的沿海水色扎,导致细分和准确性差.
  • 现有的方法在精确地划定各种背景的红树林边缘方面面临挑战.

研究的目的:

  • 开发一种新的算法,用于高精度的红树林识别和提取.
  • 在复杂的水生环境中克服传统方法的局限性.
  • 提高红树林资源监测的准确性和可靠性.

主要方法:

  • 利用了GF-6遥感图像与预处理和带扩展.
  • 使用直角匹配波器 (OMF) 结合白色直角子空间投影.
  • 创新地集成加权最小方形 (WLS) 过,以提高边缘细节和降低噪音.
  • 应用了Otsu适应值细分的方法.

主要成果:

  • 与传统方法相比,OMF-WLS算法显示出更高的性能.
  • 整体精度从0.95702增加到0.99366.6,从0.95702增加到0.99366.
  • 卡帕系数从0.88436提高到0.98233,表明精度提高.
关键词:
远程传感图像GF-6远程传感图像边缘检测 边缘检测 边缘检测红树林就是红树林.目标提取 目标提取

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  • 在其他绩效指标中观察到显著的改善.
  • 结论:

    • 拟议的OMF-WLS方法为在具有挑战性的环境中挖掘红树林提供了强大的解决方案.
    • 提高红树林绘图的准确性为保护工作提供了更可靠的数据.
    • 这种技术支持了对红树林资源管理和保护的更好的技术决策.