Automatic horizon tracking method adopting dip angle propagation method

The invention relates to a seismic data structural interpretation technology, and provides an automatic horizon tracking method adopting a dip angle propagation method. The classic flood fill image processing technology is modified according to the characteristics of seismic data and the seismic horizon tracking requirement, an inverse flood fill algorithm is constructed, and automatic horizon tracking is achieved through reserve seed point searching, stratum damping coefficient setting, fault blocking and other technologies. By means of the method, seismic horizon tracking continuity can be enhanced, accuracy of horizon tracking near a fault is improved, the requirement for high-precision automatic horizon tracking and efficient seismic data structural interpretation are met, and the automatic horizon tracking method can be used for horizon tracking of a two-dimensional work area and a three-dimensional work area.