67 results about "Diffusion filter" patented technology

The invention relates to a desert area seismic exploration denoising method based on self-adaptive resharpening diffusion, which belongs to a noise suppression method. By means of structure tensor, adiffusion coefficient of resharpening diffusion filtering in the gradient direction is constructed so as to non-linearly vary with the degree of consistency of seismic exploration data, and thereby the diffusion degrees of the signal region and noise region of the seismic exploration data are controlled; on the basis, the feature vector of the structure tensor is further utilized to regulate the diffusion coefficient in the consistent direction, so that the intensity of diffusion can vary with the change of different seismic areas, and thereby the retention of resharpening diffusion on amplitudes and structures of events is enhanced. A synthetic data and actual desert area record processing result indicates that the method can effectively suppress random desert noise with similar waveformsand bands as seismic exploration signals, moreover, the retention effect on seismic exploration signals is improved, the recovery of steep events is clearer and more accurate in particular, and the method has practicability and effectiveness.