FR2418459B1 - - Google Patents

Info

Publication number
FR2418459B1
FR2418459B1 FR7614650A FR7614650A FR2418459B1 FR 2418459 B1 FR2418459 B1 FR 2418459B1 FR 7614650 A FR7614650 A FR 7614650A FR 7614650 A FR7614650 A FR 7614650A FR 2418459 B1 FR2418459 B1 FR 2418459B1
Authority
FR
France
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
Application number
FR7614650A
Other versions
FR2418459A1 (fr
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2418459A1 publication Critical patent/FR2418459A1/fr
Application granted granted Critical
Publication of FR2418459B1 publication Critical patent/FR2418459B1/fr
Granted 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
    • G06T11/005—Specific pre-processing for tomographic reconstruction, e.g. calibration, source positioning, rebinning, scatter correction, retrospective gating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H15/00—Transversal filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S378/00—X-ray or gamma ray systems or devices
    • Y10S378/901—Computer tomography program or processor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Analogue/Digital Conversion (AREA)
  • Nuclear Medicine (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
FR7614650A 1975-05-16 1976-05-14 Dispositif pour mesurer le degre local d'absorption ou d'emission de rayonnement dans un corps Granted FR2418459A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2521796A DE2521796C3 (de) 1975-05-16 1975-05-16 Anordnung zur Ermittlung der räumlichen Verteilung der Absorption oder der Emission von Strahlung in einer Ebene eines Körpers
US68549976A 1976-05-12 1976-05-12

Publications (2)

Publication Number Publication Date
FR2418459A1 FR2418459A1 (fr) 1979-09-21
FR2418459B1 true FR2418459B1 (fr) 1982-11-19

Family

ID=25768905

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7614650A Granted FR2418459A1 (fr) 1975-05-16 1976-05-14 Dispositif pour mesurer le degre local d'absorption ou d'emission de rayonnement dans un corps

Country Status (7)

Country Link
US (1) US4149259A (fr)
JP (1) JPS52476A (fr)
BE (1) BE841889A (fr)
CA (1) CA1062815A (fr)
DE (1) DE2521796C3 (fr)
FR (1) FR2418459A1 (fr)
GB (1) GB1553286A (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5439909U (fr) * 1977-08-23 1979-03-16
US4293912A (en) * 1977-09-30 1981-10-06 Technicare Corporation Tomographic apparatus
GB1602071A (en) * 1978-05-12 1981-11-04 Emi Ltd Processing arrangements for medical examination
GB1602072A (en) * 1978-05-12 1981-11-04 Emi Ltd Processing arrangements for constructing representations of parts of bodies
FR2432176A1 (fr) * 1978-07-25 1980-02-22 Thomson Csf Formation de voies sonar par des dispositifs a transfert de charge
US4222104A (en) * 1978-11-02 1980-09-09 E M I Limited Radiography
JPS5599240A (en) * 1979-01-22 1980-07-29 Tokyo Shibaura Electric Co Ct scanner
NL7902015A (nl) * 1979-03-14 1980-09-16 Philips Nv Werkwijze en inrichting voor het bepalen van een stralingsabsorptieverdeling in een deel van een lichaam.
JPS55129607A (en) * 1979-03-27 1980-10-07 Oonuka Kk Connecting method of frame member
NL184298C (nl) * 1979-07-19 1989-06-01 Philips Nv Inrichting voor verschilbeeldbepaling.
US4382285A (en) * 1980-12-30 1983-05-03 Motorola, Inc. Filter for binary data with integral output amplitude multiplier
US4404631A (en) * 1981-01-21 1983-09-13 U.S. Philips Corporation Method of and device for coding and decoding an image of an object by means of penetrating radiation
JPS57134142A (en) * 1981-02-12 1982-08-19 Tokyo Shibaura Electric Co Computed tomography apparatus
NL8202450A (nl) * 1982-06-17 1984-01-16 Philips Nv Werkwijze en inrichting voor het verwerken van roentgenbeelden.
US4554633A (en) * 1982-09-30 1985-11-19 General Electric Company Sampled data CT system including analog filter and compensating digital filter
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.
US4694413A (en) * 1984-07-19 1987-09-15 Rca Corporation Compact-structure input-weighted multitap digital filters
JP2544326B2 (ja) * 1984-11-14 1996-10-16 ソニー株式会社 ディジタルフィルタ
US4809209A (en) * 1985-08-26 1989-02-28 Rockwell International Corporation Mybrid charge-transfer-device filter structure
US4884232A (en) * 1987-12-14 1989-11-28 General Dynamics Corp., Pomona Div. Parallel processing circuits for high speed calculation of the dot product of large dimensional vectors
US5020006A (en) * 1989-05-03 1991-05-28 Hewlett-Packard Company Method for finding a reference point
US5535150A (en) * 1993-04-20 1996-07-09 Massachusetts Institute Of Technology Single chip adaptive filter utilizing updatable weighting techniques
US5828700A (en) * 1993-08-05 1998-10-27 Micro Linear Corporation Adaptive equalizer circuit
US5485528A (en) * 1993-10-15 1996-01-16 Star Technologies, Inc. Apparatus and method for back-projecting an image
US5442582A (en) * 1994-03-04 1995-08-15 Loral Aerospace Corp. Transversal filter allrate equalizer for use at intermediate frequency
CN108226636B (zh) * 2016-12-15 2021-06-11 欧姆龙株式会社 自动滤波方法和装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922965A (en) * 1956-08-09 1960-01-26 Bell Telephone Labor Inc Aperture equalizer and phase correction for television
US3303335A (en) * 1963-04-25 1967-02-07 Cabell N Pryor Digital correlation system having an adjustable impulse generator
US3314015A (en) * 1963-09-16 1967-04-11 Bell Telephone Labor Inc Digitally synthesized artificial transfer networks
NL153045B (nl) * 1966-03-05 1977-04-15 Philips Nv Filter voor analoge signalen.
US3543009A (en) * 1966-05-13 1970-11-24 Research Corp Binary transversal filter systems
US3670151A (en) * 1970-06-05 1972-06-13 Us Navy Correlators using shift registers
GB1468021A (en) * 1973-04-07 1977-03-23 Emi Ltd Radiology
GB1471531A (en) * 1973-04-25 1977-04-27 Emi Ltd Radiography

Also Published As

Publication number Publication date
FR2418459A1 (fr) 1979-09-21
CA1062815A (fr) 1979-09-18
DE2521796A1 (de) 1976-11-25
JPS52476A (en) 1977-01-05
US4149259A (en) 1979-04-10
DE2521796C3 (de) 1979-12-13
DE2521796B2 (de) 1979-04-19
BE841889A (fr) 1976-11-16
GB1553286A (en) 1979-09-26

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Legal Events

Date Code Title Description
ST Notification of lapse