Title:
非線形異方性拡散による地震画像のエッジ保護強化
Document Type and Number:
Japanese Patent JP2004506275
Kind Code:
A
Abstract:
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.
Inventors:
Eric Bowts
Gearsbelt Christine Farmers
Styrian Nikolov Carridgen
Gearsbelt Christine Farmers
Styrian Nikolov Carridgen
Application Number:
JP2002518422A
Publication Date:
February 26, 2004
Filing Date:
August 09, 2001
Export Citation:
Assignee:
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BESLOTEN VENNOOTSHAP
International Classes:
G01V1/28; G06T5/00; G06T5/20; G06V10/30; (IPC1-7): G06T5/00; G06T5/20
Domestic Patent References:
| JPH0438491A | 1992-02-07 |
Attorney, Agent or Firm:
Kazuho Kawarada