发明名称 EDGE-PRESERVING ENHANCEMENT OF SEISMIC IMAGES BY NONLINEAR ANISOTROPIC DIFFUSION
摘要 rocessing a seismic image comprising the steps of(a) obtaining a two or three dimensional initial image data set, wherein each element u(m=0) of the data set is the initial image intensity of a point of the image;(b) calculating for each point the partial derivatives of u(m) in n directions to obtain n derivative data sets of the partial derivatives uxi; (c) calculating for each point a symmetric nxn structural matrix S, wherein the elements spq equal uxp.uxq, and an nxn diffusion matrix D, wherein the elements dij are a function of the elements spq; (d) calculating for each point u(m+1) from u(m) using the following equation u(m+1)=u(m)+c.div(epsil.Dgrad(u(m))), wherein c is a predetermined constant, 0<=c<=1, and wherein epsil is a scalar, 0<=epsil<=, wherein epsil is close to zero when near an edge and close to 1 when far away from an edge (10, 11, 12, 14, 15); and(e) repeating steps (b) through (e) M times to obtain the processed image.
申请公布号 EP1307858(A1) 申请公布日期 2003.05.07
申请号 EP20010962934 申请日期 2001.08.09
申请人 SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. 发明人 BOUTS, ERIK;FEHMERS, GIJSBERT, CHRISTIAAN;KALITZIN, STILIYAN, NIKOLOV
分类号 G01V1/28;G06K9/40;G06T5/00;G06T5/20;(IPC1-7):G06T5/00 主分类号 G01V1/28
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