Local structural entropy based on frequency-division instantaneous phase for enhancing seismic discontinuities

Automatic detection of geological discontinuities such as small faults and lithologic variation is an important problem in the interpretation of seismic data. There are some coherence methods that often used to detect discontinuities. However, these conventional methods may be affected by noise or computation cost. In this paper, we combine the local structural entropy with instantaneous attribute and propose local structural entropy based on frequency-division instantaneous phase in order to enhancing the subtle-discontinuities discrimination of seismic data. And also the helical coordinate is introduced to constitute covariance matrix, which improves the computation efficiency. Comparing the results of synthetic and real data, we obtain that the proposal is more robust to noise and improves the discrimination of subtle features.