BEMD and edge detection for loess shoulder-line extraction

The data in the .shp format represents the gully lines extracted using a combination of BEMD (Bidimensional Empirical Mode Decomposition) and the LOG (Laplacian of Gaussian) edge detection operator. This data is utilized for visualizing the results and conducting subsequent accuracy assessments. The two code segments provided are the primary scripts for BEMD, which facilitate the multiscale decomposition of the data..shp格式的数据为采用双维经验模态分解（Bidimensional Empirical Mode Decomposition，BEMD）与高斯拉普拉斯（Laplacian of Gaussian，LOG）边缘检测算子联合提取得到的沟壑线要素。该数据可用于成果可视化及后续精度评估工作。本次提供的两段代码为BEMD的核心脚本，可实现数据的多尺度分解。