DE3582589D1 - Filter fuer datenverarbeitung. - Google Patents

Filter fuer datenverarbeitung.

Info

Publication number
DE3582589D1
DE3582589D1 DE8585309395T DE3582589T DE3582589D1 DE 3582589 D1 DE3582589 D1 DE 3582589D1 DE 8585309395 T DE8585309395 T DE 8585309395T DE 3582589 T DE3582589 T DE 3582589T DE 3582589 D1 DE3582589 D1 DE 3582589D1
Authority
DE
Germany
Prior art keywords
filter
data processing
data
processing
Prior art date
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.)
Expired - Lifetime
Application number
DE8585309395T
Other languages
English (en)
Inventor
Michael M Kerber
Carl J Brunnett
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.)
Philips Nuclear Medicine Inc
Original Assignee
Picker International Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Picker International Inc filed Critical Picker International Inc
Application granted granted Critical
Publication of DE3582589D1 publication Critical patent/DE3582589D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/003—Reconstruction from projections, e.g. tomography
    • G06T11/006—Inverse problem, transformation from projection-space into object-space, e.g. transform methods, back-projection, algebraic methods
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/10—Image enhancement or restoration by non-spatial domain filtering
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration by the use of local operators
    • 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
    • G06T2207/10—Image acquisition modality
    • G06T2207/10072—Tomographic images
    • G06T2207/10081—Computed x-ray tomography [CT]
    • 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
    • G06T2207/20048—Transform domain processing
    • G06T2207/20056—Discrete and fast Fourier transform, [DFT, FFT]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2211/00—Image generation
    • G06T2211/40—Computed tomography
    • G06T2211/421—Filtered back projection [FBP]
DE8585309395T 1984-12-31 1985-12-20 Filter fuer datenverarbeitung. Expired - Lifetime DE3582589D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/688,021 US4674045A (en) 1984-12-31 1984-12-31 Filter for data processing

Publications (1)

Publication Number Publication Date
DE3582589D1 true DE3582589D1 (de) 1991-05-23

Family

ID=24762789

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585309395T Expired - Lifetime DE3582589D1 (de) 1984-12-31 1985-12-20 Filter fuer datenverarbeitung.

Country Status (5)

Country Link
US (1) US4674045A (de)
EP (1) EP0195869B1 (de)
JP (1) JPH0799540B2 (de)
CA (1) CA1233916A (de)
DE (1) DE3582589D1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4965736A (en) * 1988-06-15 1990-10-23 Measurex Corporation Cross-directional control of sheetmaking systems
US4982334A (en) * 1989-01-27 1991-01-01 Measurex Corporation Calender control system for sheetmaking
US5028784A (en) * 1989-04-11 1991-07-02 Fuji Photo Film Co., Ltd. Method for generating radiation image signals, image processing method, and radiation image read-out apparatus
EP0792061B1 (de) * 1989-04-11 2003-01-29 Fuji Photo Film Co., Ltd. Verfahren zur Generierung von Strahlungsbildsignalen und Strahlungsausleseapparat
US5265013A (en) * 1990-11-19 1993-11-23 General Electric Company Compensation of computed tomography data for X-ray detector afterglow artifacts
US5293312A (en) * 1991-06-20 1994-03-08 Waggener Robert G Method and apparatus for computing tomographic scans
US5311428A (en) * 1992-06-05 1994-05-10 Summit World Trade Corporation Real time filter for data processing
US5446799A (en) * 1993-11-01 1995-08-29 Picker International, Inc. CT Scanner with improved processing efficiency 180 degrees+ fan angle reconstruction system
US5447313A (en) * 1994-07-25 1995-09-05 Finley; Richard O. Golf putter with foldable aiming device
US6778710B1 (en) * 2000-04-27 2004-08-17 Xerox Corporation Method for generating increasing shift-invariant filters
US20040116796A1 (en) * 2002-12-17 2004-06-17 Jianying Li Methods and apparatus for scoring a substance
US7457721B2 (en) * 2004-04-22 2008-11-25 The University Of Electro-Communications Method and apparatus for measuring small displacement
US8213694B2 (en) 2008-02-29 2012-07-03 Barco N.V. Computed tomography reconstruction from truncated scans
WO2011019024A1 (ja) 2009-08-10 2011-02-17 大清工業株式会社 パター

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326252A (en) * 1976-11-29 1982-04-20 Hitachi Medical Corporation Method of reconstructing cross-section image
GB1594751A (en) * 1977-01-31 1981-08-05 Tokyo Shibaura Electric Co Method and apparatus for tomography by means of penetrating radiation
JPS5394787A (en) * 1977-01-31 1978-08-19 Toshiba Corp Tomographic diagnostic equipment by radiation
JPS544585A (en) * 1977-06-14 1979-01-13 Toshiba Corp Tomographic apparatus by radiations
US4293912A (en) * 1977-09-30 1981-10-06 Technicare Corporation Tomographic apparatus
US4197583A (en) * 1978-05-03 1980-04-08 Baird Corporation Image display system
US4282579A (en) * 1979-10-22 1981-08-04 The United States Of America As Represented By The Secretary Of The Navy Discrete Fourier transform system using the dual chirp-Z transform
US4333145A (en) * 1979-11-29 1982-06-01 Technicare Corporation Method of high resolution partial area scan involving concentrated high density material outside the partial area
US4550371A (en) * 1982-09-27 1985-10-29 General Electric Company Method and apparatus for compensating CT images for truncated projections
NL8204086A (nl) * 1982-10-22 1984-05-16 Philips Nv Werkwijze en inrichting voor het bepalen van een stralingsverzwakkingsverdeling in een vlak van een lichaam.
JPS6158052A (ja) * 1984-08-29 1986-03-25 Nec Home Electronics Ltd マイクロコンピユ−タプログラム簡易デバツグ装置

Also Published As

Publication number Publication date
CA1233916A (en) 1988-03-08
EP0195869A3 (en) 1988-01-20
JPS61182170A (ja) 1986-08-14
EP0195869B1 (de) 1991-04-17
JPH0799540B2 (ja) 1995-10-25
EP0195869A2 (de) 1986-10-01
US4674045A (en) 1987-06-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: PATENTANWAELTE REICHEL UND REICHEL, 60322 FRANKFURT

8339 Ceased/non-payment of the annual fee