IT1258122B - Sistema migliorativo del contrasto di immagini video utilizzante un filtro di volterra del secondo ordine. - Google Patents

Sistema migliorativo del contrasto di immagini video utilizzante un filtro di volterra del secondo ordine.

Info

Publication number
IT1258122B
IT1258122B ITTO920952A ITTO920952A IT1258122B IT 1258122 B IT1258122 B IT 1258122B IT TO920952 A ITTO920952 A IT TO920952A IT TO920952 A ITTO920952 A IT TO920952A IT 1258122 B IT1258122 B IT 1258122B
Authority
IT
Italy
Prior art keywords
improvement system
video image
image contrast
volterra filter
order volterra
Prior art date
Application number
ITTO920952A
Other languages
English (en)
Original Assignee
Seleco Spa
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 Seleco Spa filed Critical Seleco Spa
Priority to ITTO920952A priority Critical patent/IT1258122B/it
Publication of ITTO920952A0 publication Critical patent/ITTO920952A0/it
Priority to EP93118779A priority patent/EP0599252A1/en
Publication of ITTO920952A1 publication Critical patent/ITTO920952A1/it
Application granted granted Critical
Publication of IT1258122B publication Critical patent/IT1258122B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/142—Edging; Contouring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Picture Signal Circuits (AREA)
  • Television Receiver Circuits (AREA)

Abstract

La presente invenzione si riferisce ad un sistema migliorativo del contrasto di immagini video, utilizzante un filtro non lineare; la caratteristica principale dell'invenzione consiste nel fatto che detto filtro di Volterra modificato, che opera su un dominio spaziale a finestra quadrata 3x3 ed è ottenuto troncando lo sviluppo al 2° ordine (k=2).
ITTO920952A 1992-11-25 1992-11-25 Sistema migliorativo del contrasto di immagini video utilizzante un filtro di volterra del secondo ordine. IT1258122B (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITTO920952A IT1258122B (it) 1992-11-25 1992-11-25 Sistema migliorativo del contrasto di immagini video utilizzante un filtro di volterra del secondo ordine.
EP93118779A EP0599252A1 (en) 1992-11-25 1993-11-22 Circuit for improving the contrast of a video image utilising a second order volterra filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO920952A IT1258122B (it) 1992-11-25 1992-11-25 Sistema migliorativo del contrasto di immagini video utilizzante un filtro di volterra del secondo ordine.

Publications (3)

Publication Number Publication Date
ITTO920952A0 ITTO920952A0 (it) 1992-11-25
ITTO920952A1 ITTO920952A1 (it) 1994-05-25
IT1258122B true IT1258122B (it) 1996-02-20

Family

ID=11410877

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO920952A IT1258122B (it) 1992-11-25 1992-11-25 Sistema migliorativo del contrasto di immagini video utilizzante un filtro di volterra del secondo ordine.

Country Status (2)

Country Link
EP (1) EP0599252A1 (it)
IT (1) IT1258122B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4561151B2 (ja) * 2004-04-06 2010-10-13 ソニー株式会社 信号処理装置及び方法、並びに信号復号装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386434A (en) * 1981-06-08 1983-05-31 Rca Corporation Vertical and horizontal detail signal processor
US4573075A (en) * 1983-06-24 1986-02-25 Rca Corporation Digital signal coring apparatus with controllable coring threshold level
JP2594627B2 (ja) * 1988-02-26 1997-03-26 オリンパス光学工業株式会社 電子内視鏡装置
JPH01220975A (ja) * 1988-02-29 1989-09-04 Toshiba Corp 画質調整回路
US4991021A (en) * 1988-06-22 1991-02-05 Nec Corporation Digital video signal compensation circuit
US4941190A (en) * 1988-07-15 1990-07-10 Minnesota Mining And Manufacturing Company Method and system for enhancement of a digitized image

Also Published As

Publication number Publication date
EP0599252A1 (en) 1994-06-01
ITTO920952A1 (it) 1994-05-25
ITTO920952A0 (it) 1992-11-25

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961129