CA2417749A1 - Edge-preserving enhancement of seismic images by nonlinear anisotropic diffusion - Google Patents

Edge-preserving enhancement of seismic images by nonlinear anisotropic diffusion Download PDF

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Publication number
CA2417749A1
CA2417749A1 CA002417749A CA2417749A CA2417749A1 CA 2417749 A1 CA2417749 A1 CA 2417749A1 CA 002417749 A CA002417749 A CA 002417749A CA 2417749 A CA2417749 A CA 2417749A CA 2417749 A1 CA2417749 A1 CA 2417749A1
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Canada
Prior art keywords
epsilon
edge
point
calculating
image
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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CA002417749A
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French (fr)
Other versions
CA2417749C (en
Inventor
Erik Bouts
Gijsbert Christiaan Fehmers
Stiliyan Nikolov Kalitzin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Canada Ltd
Original Assignee
Shell Canada Limited
Erik Bouts
Gijsbert Christiaan Fehmers
Stiliyan Nikolov Kalitzin
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Publication date
Application filed by Shell Canada Limited, Erik Bouts, Gijsbert Christiaan Fehmers, Stiliyan Nikolov Kalitzin filed Critical Shell Canada Limited
Publication of CA2417749A1 publication Critical patent/CA2417749A1/en
Application granted granted Critical
Publication of CA2417749C publication Critical patent/CA2417749C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G06T5/70—
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28—Processing seismic data, e.g. analysis, for interpretation, for correction
    • G01V1/34—Displaying seismic recordings or visualisation of seismic data or attributes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/30—Noise filtering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V2210/00—Details of seismic processing or analysis
    • G01V2210/60—Analysis
    • G01V2210/64—Geostructures, e.g. in 3D data cubes
    • G01V2210/646—Fractures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20004—Adaptive image processing
    • G06T2207/20012—Locally adaptive
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20172—Image enhancement details
    • G06T2207/20192—Edge enhancement; Edge preservation

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(.epsilon..Dgrad(u(m))), wherein c is a predetermined constant, 0<=c<=1, and wherein .epsilon. is a scalar, 0<=.epsilon.<=, wherein .epsilon. 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.
CA002417749A 2000-08-09 2001-08-09 Edge-preserving enhancement of seismic images by nonlinear anisotropic diffusion Expired - Fee Related CA2417749C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00306780.8 2000-08-09
EP00306780 2000-08-09
PCT/EP2001/009277 WO2002013139A1 (en) 2000-08-09 2001-08-09 Edge-preserving enhancement of seismic images by nonlinear anisotropic diffusion

Publications (2)

Publication Number Publication Date
CA2417749A1 true CA2417749A1 (en) 2002-02-14
CA2417749C CA2417749C (en) 2009-09-22

Family

ID=8173178

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002417749A Expired - Fee Related CA2417749C (en) 2000-08-09 2001-08-09 Edge-preserving enhancement of seismic images by nonlinear anisotropic diffusion

Country Status (10)

Country Link
US (1) US6725174B2 (en)
EP (1) EP1307858B1 (en)
JP (1) JP2004506275A (en)
AU (2) AU8400601A (en)
CA (1) CA2417749C (en)
DE (1) DE60102247T2 (en)
GC (1) GC0000235A (en)
MY (1) MY126900A (en)
NO (1) NO324860B1 (en)
WO (1) WO2002013139A1 (en)

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Also Published As

Publication number Publication date
WO2002013139A1 (en) 2002-02-14
NO20030607L (en) 2003-04-08
GC0000235A (en) 2006-03-29
US20030179907A1 (en) 2003-09-25
DE60102247D1 (en) 2004-04-08
AU2001284006B2 (en) 2004-06-17
EP1307858A1 (en) 2003-05-07
MY126900A (en) 2006-10-31
EP1307858B1 (en) 2004-03-03
DE60102247T2 (en) 2005-02-24
NO324860B1 (en) 2007-12-17
NO20030607D0 (en) 2003-02-07
JP2004506275A (en) 2004-02-26
US6725174B2 (en) 2004-04-20
AU8400601A (en) 2002-02-18
CA2417749C (en) 2009-09-22

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