FR2629658B1 - Circuit d'amelioration du contraste d'une image video, notamment d'une partie de l'image - Google Patents

Circuit d'amelioration du contraste d'une image video, notamment d'une partie de l'image

Info

Publication number
FR2629658B1
FR2629658B1 FR8216300A FR8216300A FR2629658B1 FR 2629658 B1 FR2629658 B1 FR 2629658B1 FR 8216300 A FR8216300 A FR 8216300A FR 8216300 A FR8216300 A FR 8216300A FR 2629658 B1 FR2629658 B1 FR 2629658B1
Authority
FR
France
Prior art keywords
image
contrast
improving
circuit
video image
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
FR8216300A
Other languages
English (en)
Other versions
FR2629658A1 (fr
Inventor
Claude Gillet
Claude Lepage
Gerard Voisin
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR8216300A priority Critical patent/FR2629658B1/fr
Priority to GBGB8325688.3A priority patent/GB8325688D0/en
Priority to DE19833334898 priority patent/DE3334898A1/de
Publication of FR2629658A1 publication Critical patent/FR2629658A1/fr
Application granted granted Critical
Publication of FR2629658B1 publication Critical patent/FR2629658B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04N5/20—Circuitry for controlling amplitude response
FR8216300A 1982-09-28 1982-09-28 Circuit d'amelioration du contraste d'une image video, notamment d'une partie de l'image Expired - Lifetime FR2629658B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR8216300A FR2629658B1 (fr) 1982-09-28 1982-09-28 Circuit d'amelioration du contraste d'une image video, notamment d'une partie de l'image
GBGB8325688.3A GB8325688D0 (en) 1982-09-28 1983-09-26 Circuit for improving the contrast of a video image
DE19833334898 DE3334898A1 (de) 1982-09-28 1983-09-27 Schaltungsanordnung zur verbesserung des kontrasts eines videobildes, insbesondere eines bildteiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8216300A FR2629658B1 (fr) 1982-09-28 1982-09-28 Circuit d'amelioration du contraste d'une image video, notamment d'une partie de l'image

Publications (2)

Publication Number Publication Date
FR2629658A1 FR2629658A1 (fr) 1989-10-06
FR2629658B1 true FR2629658B1 (fr) 1990-10-05

Family

ID=9277807

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8216300A Expired - Lifetime FR2629658B1 (fr) 1982-09-28 1982-09-28 Circuit d'amelioration du contraste d'une image video, notamment d'une partie de l'image

Country Status (3)

Country Link
DE (1) DE3334898A1 (fr)
FR (1) FR2629658B1 (fr)
GB (1) GB8325688D0 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2648302A1 (fr) * 1989-06-09 1990-12-14 Peugeot Procede de traitement d'un signal composite video d'une scene a examiner
US5065443A (en) * 1989-12-04 1991-11-12 Allen-Bradley Company, Inc. Image processor with illumination variation compensation
FR2674049B1 (fr) * 1991-03-12 1993-05-28 Thomson Csf Procede d'augmentation du contraste d'un generateur d'images synthetiques, et generateur de mise en óoeuvre.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1241869B (de) * 1962-05-12 1967-06-08 Fernseh Gmbh Schaltungsanordnung zur Verbesserung der Detailerkennbarkeit eines Fernsehbildes
FR1481969A (fr) * 1966-01-14 1967-05-26 Dispositif pour l'augmentation des contrastes d'une image de télévision
DE2229674C3 (de) * 1972-06-19 1979-02-15 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zur Kontrasterhöhung
FR2406922A1 (fr) * 1977-10-21 1979-05-18 Thomson Csf Dispositif d'expansion de contraste video et systeme comportant un tel dispositif

Also Published As

Publication number Publication date
DE3334898A1 (de) 1989-12-28
GB8325688D0 (en) 2009-09-09
FR2629658A1 (fr) 1989-10-06

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Legal Events

Date Code Title Description
ST Notification of lapse
ST Notification of lapse