Corrosion valley identification method and device

The invention discloses a corrosion gully identification method and device, and relates to the technical field of geological prospecting, and the method comprises the steps: obtaining the logging data and three-dimensional seismic data of a target layer; determining a seismic interpretation horizon of the target stratum according to the logging data of the target stratum; a dominant frequency body sensitive to fracture and a dominant frequency body sensitive to corrosion valley are optimized from the three-dimensional seismic data through a spectral decomposition technology; constructing guided filtering processing on the two different dominant frequency bodies, extracting the most positive curvature, and executing K-L transformation processing to obtain first curvature attribute data after K-L transformation and second curvature attribute data after K-L transformation; and identifying the corrosion valley according to the first curvature attribute data after K-L transformation, the second curvature attribute