Selected labeled contour data for ridge and valley extraction

Contour lines, due to their equal elevation value, intuitive morphology, and hierarchical structure, serve as an ideal data source for extracting ridgelines and valley lines. This study proposes and constructs a C2RV-Pix2pix deep learning model for the task of generating ridgelines and valley lines from contour lines. This dataset is part of the data used for comparative experiments and model performance evaluation in this research.