2024 Volume 80 Issue 16 Article ID: 23-16131
Accurate information pertaining to river levees holds significant importance in fulfilling the demand for comprehensive and precise inundation data. However, particularly concerning small and medium-sized rivers, the insufficiency of data regarding the height and location of levees can be attributed to the inadequate allocation of river maintenance funds by local governing bodies. Additionally, there exists the possibility of the presence of unrecognized old levees or those in tributaries, which have not been acknowledged by river administrators. This study endeavored to automatically detect levees in Shizuoka City, Shizuoka Prefecture, Japan. The algorithm successfully identified not only the primary levees of first-class rivers but also those of small and medium-sized rivers, ambiguous levees, and dual-line levees, in cases where the levees possessed trapezoidal cross-sections. Conversely, the algorithm encountered difficulties in detecting levees exhibiting shapes that deviated from those defined within the algorithm, while simultaneously incorrectly identifying structures resembling the shapes stipulated by the algorithm.
