Method For Hierarchical Determination Of Coherent Events In A Seismic Image

摘要

The invention concerns the determination of coherent events in a seismic image comprising the following operational phases: a phase of selecting a segmentation criterion based on a variable and at least one sliding window on said zone and its characteristics, a phase of hierarchical segmentation, for overlapping positions of the sliding window, including a segmentation of said zone into n regions and for each pixel located at least once by a segmentation boundary; a phase of assigning to the non-located pixels a value of indices (EI and EIC) corresponding to a numerical or alphanumeric characteristic non-value; a phase of determining coherent events of the image by thresholding the indices (EI and EIC), that is by selecting only located pixels of the zone corresponding to values lower or higher than a fixed threshold. The invention is applicable to imaging data obtained by seismic imaging physical methods: amplitude data or seismic attributes and likewise to medical imaging, sonar, non-destructive control of materials and the like.