NDLI: Coherence cube enhancement based on local histogram specification

Content Provider	Springer Nature Link
Author	Wang, Ji Lu, Wen Kai
Copyright Year	2010
Abstract	Coherence analysis is a powerful tool in seismic interpretation for imaging geological discontinuities such as faults and fractures. However, subtle faults or fractures of one stratum are difficult to be distinguished on coherence sections (time slices or profiles) due to interferences from adjacent strata, especially these with strong reflectivity. In this paper, we propose a coherence enhancement method which applies local histogram specification (LHS) techniques to enhance subtle faults or fractures in the coherence cubes. Unlike the traditional histogram specification (HS) algorithm, our method processes 3D coherence data without discretization. This method partitions a coherence cube into many sub-blocks and self-adaptively specifies the target distribution in each block based on the whole distribution of the coherence cube. Furthermore, the neighboring blocks are partially overlapped to reduce the edge effect. Applications to real datasets show that the new method enhances the details of subtle faults and fractures noticeably.
Starting Page	249
Ending Page	256
Page Count	8
File Format	PDF
ISSN	16727975
Journal	Applied Geophysics
Volume Number	7
Issue Number	3
e-ISSN	19930658
Language	English
Publisher	Chinese Geophysical Society
Publisher Date	2010-10-20
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	coherence cube histogram specification small fault seismic interpretation Applied Earth Sciences Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Geophysics

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