EP0730959B1 - Verfahren zur Herstellung eines Referenzmodells für automatische Qualitätskontrolle von Bildern auf Papier - Google Patents

Verfahren zur Herstellung eines Referenzmodells für automatische Qualitätskontrolle von Bildern auf Papier Download PDF

Info

Publication number
EP0730959B1
EP0730959B1 EP96810121A EP96810121A EP0730959B1 EP 0730959 B1 EP0730959 B1 EP 0730959B1 EP 96810121 A EP96810121 A EP 96810121A EP 96810121 A EP96810121 A EP 96810121A EP 0730959 B1 EP0730959 B1 EP 0730959B1
Authority
EP
European Patent Office
Prior art keywords
images
printed
model
pixel
value
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
EP96810121A
Other languages
English (en)
French (fr)
Other versions
EP0730959A1 (de
Inventor
Luigi Stringa
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.)
KBA Notasys SA
Original Assignee
De la Rue Giori 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 De la Rue Giori SA filed Critical De la Rue Giori SA
Publication of EP0730959A1 publication Critical patent/EP0730959A1/de
Application granted granted Critical
Publication of EP0730959B1 publication Critical patent/EP0730959B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0081—Devices for scanning register marks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/30—Character or syllable selection controlled by recorded information

Definitions

  • the present invention relates to a production method a reference model, by electronic means, intended to be used for automatic control of the print quality of an image on paper, especially for securities, said image being composed of designs printed in at least two phases separate printing.
  • an acceptable print quality model is built.
  • Another method associates two values with each pixel, one is the minimum value that has been reached in the group of test sheets and the other the maximum value. So, for each image, we have two matrices, one with the minimum value and the other with the value maximum. Of course, if it is an image polychromatic, we obtain two matrices per channel color.
  • each pixel of the image to be inspected is confronted with the pixel of the model thus obtained. If the difference exceeds a predetermined threshold value or if it is within outside the minimum-maximum range, the pixel is considered to have a printing defect.
  • the number of defective pixels determines the possible rejection the image depending on the quality you want obtain and which is previously determined.
  • the models are then combined taking into account the way the different phases are printed successively on the sheets to obtain a model single reference whose layout corresponds to the arrangement of the drawings in the images to be checked. Then, each image is compared with the model thus produced.
  • This process is complex and particularly expensive for the printer because for each production batch, print as many groups of sheets representative of the desired print quality, as well as printing phases.
  • the object of the invention is to propose a method for preparation of the reference model not presenting the disadvantages of what is currently being done.
  • the proposed method allows, taking the minimum pixel values between the different values found when entering of the image, to produce the model of the printed design during the same printing phase and this directly from fully printed images as in of normal serial production. What should change between two images, including the drawings printed during of a printing phase are aligned, these are the drawings printed during a subsequent printing phase.
  • a pixel when a pixel has the same non-zero value on more than one model, we attribute it to a single model by setting this value to zero for other models. This simplifies the production of models because if a pixel has the same value on more than one model, it means that it may well belong to both of them.
  • Figures 1 and 2 show two images in which the method according to the invention is applied.
  • Figures 1 and 2 we have represented two images each composed of a square a1, respectively a2 and of a triangle b1, respectively b2.
  • the squares a1, a2 were printed during a first printing phase, for example intaglio and triangles when a second printing phase, for example offset.
  • the relative displacement of two drawings, a2 and b2, between the two images is exaggerated to bring out the method according to the invention.
  • the two images (a1; b1) and (a2; b2) taken in the test group are aligned according to the drawing printed during a first printing phase, namely in Figure 1, the squares a1 and a2.
  • a scan is carried out along axes S1 and S2. We report the pixel values found on these axes on the bottom of the figure.
  • Capturing images or scans is done well, heard, using appropriate and known cameras since they are currently used to control the quality.
  • one pixel if during production different models corresponding to drawings printed in different phases, one pixel present the same value on more than one model, it means that the pixel can be indifferently associated with one or the other of the models, so all the pixels of this type are associated with a unique model and we put the value equal to zero for the others.
  • a pixel has different values on more than one model and nonzero we associate with the model where the value is the highest the absolute value of the difference of values of said pixel and we put the equal value to zero on the model with the lower value.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Image Processing (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Paper (AREA)
  • Image Analysis (AREA)
  • Facsimiles In General (AREA)
  • Printing Methods (AREA)
  • Feedback Control In General (AREA)
  • Circuits Of Receivers In General (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Claims (6)

  1. Verfahren zur Herstellung eines Bezugsmodells durch elektronische Mittel, welches dazu bestimmt ist, zur automatischen Kontrolle der Druckqualität eines Bildes auf Papier, insbesondere von Wertpapieren, verwendet zu werden, wobei dieses Bild aus Mustern zusammengesetzt ist, die in wenigstens zwei verschiedenen Druckphasen gedruckt wurden, gekennzeichnet durch die folgenden Schritte:
    a. Es wird eine Gruppe von Bildern (Testbogen) hergestellt, die vollständig mit Hilfe von Mitteln und Verfahren gedruckt sind, welche für den serienmässigen Druck verwendet werden,
    b. diese Bilder werden so angeordnet, dass die Muster dieser während einer ersten Phase gedruckten Bilder registerhaltig sind,
    c. die erwähnten Bilder werden registriert, und die densitometrischen Werte der diese Bilder bildenden Pixel werden und gespeichert,
    d. jedem Pixel wird der minimale Wert zugeordnet, welcher in der Gesamtheit der Bilder der Gruppe ermittelt wurde, und auf diese Weise wird das Modell des während der erwähnten ersten Druckphase gedruckten Musters gebildet,
    e. dann werden die Bilder so angeordnet, dass die während einer anderen Druckphase gedruckten Muster registerhaltig sind, und man wiederholt die Schritte c. und d. und so weiter für die während der verschiedenen Druckphasen gedruckten Muster,
    f. die so erhaltenen Modelle werden rekombiniert, um das Bezugsmodell des zu kontrollierenden Bildes zu erhalten.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass einem Pixel, das denselben von null verschiedenen Wert auf mehr als einem Model hat, ein einziges Modell zugeordnet wird, wobei in den anderen Modellen dieser Wert null gesetzt wird.
  3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass jedem Pixel, welches auf mehr als einem Modell unterschiedliche, von null verschiedene Werte hat, auf dem Modell, das den höchsten Wert aufweist, der Absolutwert der Differenz der beiden Werte zugeordnet wird, und dass der Wert auf dem Modell, welches den kleineren Wert hat, null gesetzt wird.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass, wenn wenigstens eines der Muster der Bilder mit einer deckenden Farbe gedruckt ist, am Ende des Schritts e. des Verfahrens die verschiedenen Modelle des oder der mit der deckenden Farbe gedruckten Modelle unter Ausschluss der Werte der mit der deckenden Farbe gedruckten Pixel neu zusammengesetzt werden.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass, wenn das Bild mehrfarbig ist, das Verfahren auf jeden der verwendeten chromatischen Kanäle angewendet wird.
  6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Herstellung der Registerhaltigkeit der Muster während einer Druckphase der Gruppe der Bilder dadurch erfolgt, dass die vorher gewählten Pixel der betreffenden Muster registerhaltig angeordnet werden.
EP96810121A 1995-03-07 1996-03-04 Verfahren zur Herstellung eines Referenzmodells für automatische Qualitätskontrolle von Bildern auf Papier Expired - Lifetime EP0730959B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95MI000430A IT1276010B1 (it) 1995-03-07 1995-03-07 Procedimento per produrre un modello di riferimento destinato ad essere utilizzato per il controllo automatico della qualita' di
ITMI950430 1995-03-07

Publications (2)

Publication Number Publication Date
EP0730959A1 EP0730959A1 (de) 1996-09-11
EP0730959B1 true EP0730959B1 (de) 2000-01-19

Family

ID=11370795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810121A Expired - Lifetime EP0730959B1 (de) 1995-03-07 1996-03-04 Verfahren zur Herstellung eines Referenzmodells für automatische Qualitätskontrolle von Bildern auf Papier

Country Status (12)

Country Link
US (1) US5778088A (de)
EP (1) EP0730959B1 (de)
JP (2) JPH08276569A (de)
KR (1) KR100362023B1 (de)
CN (1) CN1074996C (de)
AT (1) ATE188916T1 (de)
AU (1) AU692991B2 (de)
CA (1) CA2171165C (de)
DE (1) DE69606206T2 (de)
IT (1) IT1276010B1 (de)
RU (1) RU2161792C2 (de)
UA (1) UA45320C2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MC2479A1 (fr) 1998-09-07 1999-04-27 Luigi Stringa Inspection automatique de la qualité d'impression par un modèle élastique
MC2491A1 (fr) 1999-06-21 1999-11-22 Stringa Luigi Reconnaissance automatique de caractères sur fond structuré par combinaison des modèles du fond et des caractères
US6639999B1 (en) * 1999-11-04 2003-10-28 Eastman Kodak Company Apparatus for assessing overall quality of hardcopy images
US6658139B1 (en) * 1999-11-04 2003-12-02 Eastman Kodak Company Method for assessing overall quality of digital images
WO2005017690A2 (en) * 2003-08-11 2005-02-24 Chorus Systems, Inc. Systems and methods for creation and use of an adaptive reference model
EP1790473A1 (de) 2005-11-25 2007-05-30 Kba-Giori S.A. Verfahren zur Erfassung vom Eintreten von Druckfehlern auf Druckbogen während deren Bearbeitung in einer Druckmaschine
EP1965982B1 (de) 2005-11-25 2014-06-11 KBA-NotaSys SA Verfahren zur erfassung des vorkommens von druckfehlern auf bedruckten substraten bei deren bearbeitung auf einer druckpresse
EP1901241A1 (de) 2006-09-06 2008-03-19 Kba-Giori S.A. Verfahren zur Qualitätskontrolle eines gedruckten Dokuments auf der Basis von Mustererkennung
AU2009251147B2 (en) * 2009-12-23 2012-09-06 Canon Kabushiki Kaisha Dynamic printer modelling for output checking

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430749A (en) * 1981-06-30 1984-02-07 Siemens Gammasonics, Inc. Medical imaging apparatus and method for furnishing difference images
US5022089A (en) * 1990-01-19 1991-06-04 Wilson Monti R Method and apparatus for fast registration using crosshair register marks
DE4006525A1 (de) * 1990-03-02 1991-09-12 Roland Man Druckmasch Auf bedruckstoff aufgedruckte marken zum erfassen des passers
JP2663726B2 (ja) * 1991-01-08 1997-10-15 株式会社デンソー 複層状態検査装置
EP0540833B1 (de) * 1991-08-12 1997-04-23 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Qualitätskontrolle einer Bildvorlage z. B. eines gedruckten Musters
DE4142481A1 (de) * 1991-08-12 1993-02-18 Koenig & Bauer Ag Qualitaetskontrolle einer bildvorlage z. b. eines gedruckten musters

Also Published As

Publication number Publication date
UA45320C2 (uk) 2002-04-15
RU2161792C2 (ru) 2001-01-10
ITMI950430A1 (it) 1996-09-07
AU4585296A (en) 1996-09-19
KR960033772A (ko) 1996-10-22
ITMI950430A0 (it) 1995-03-07
JPH08276569A (ja) 1996-10-22
CN1074996C (zh) 2001-11-21
CA2171165A1 (en) 1996-09-08
EP0730959A1 (de) 1996-09-11
ATE188916T1 (de) 2000-02-15
DE69606206D1 (de) 2000-02-24
CA2171165C (en) 2007-04-17
US5778088A (en) 1998-07-07
IT1276010B1 (it) 1997-10-24
KR100362023B1 (ko) 2003-05-09
AU692991B2 (en) 1998-06-18
JP2007168449A (ja) 2007-07-05
CN1138692A (zh) 1996-12-25
DE69606206T2 (de) 2000-08-10

Similar Documents

Publication Publication Date Title
EP0401691B1 (de) Vorrichtung und Verfahren zum Detektieren von Registermarken in einer Mehrfarbendruckpresse
EP1042125B2 (de) Verfahren zum herstellen eines mehrfarbigen fotolumineszierenden bildes, so hergestelltes bild und seine anwendungen
EP0214214B1 (de) Vorrichtung und verfahren zum positionieren von gegenständen, insbesondere von farbdruckzylindern, in rotations-offset-pressen
EP0730959B1 (de) Verfahren zur Herstellung eines Referenzmodells für automatische Qualitätskontrolle von Bildern auf Papier
FR2784052A1 (fr) Commande couleur sans marques dans une presse d'imprimerie
EP2044712A1 (de) Verfahren zum identifizieren eines individuums
EP2547532B1 (de) Verfahren zur herstellung eines irideszenten polychromatischen durchsichtigen druckbildes
FR2537738A1 (fr) Procede et systeme de traitement de donnees d'images
FR2507541A1 (fr) Presse a imprimer rotative comportant un appareil de verification
FR2491833A1 (fr) Support d'elements d'information comportant un motif figuratif surmonte d'un dessin lineaire, et procede de fabrication d'un tel support
EP0796735B1 (de) Verfahren zur Druckqualitätskontrolle eines Mehrfarbenbildes
WO2003052692A1 (fr) Procede et dispositif a faible resolution d'acquisition pour le controle d'un ecran d'affichage
EP0734863B1 (de) Automatisches Regelverfahren mit Hilfe einer optoelektronischen Einrichtung
EP1219420B1 (de) Vorrichtung zur Abtastung von Registermarken in einer Mehrfarbendruckmaschine
US20040027595A1 (en) Printing process
EP2697067B1 (de) Drucktestverfahren auf einem substrat und vorrichtung zu seiner durchführung
FR3054354B1 (fr) Amelioration d'une image en profondeur sujette a un effet d'ombrage
FR2486261A1 (fr) Procede et dispositif pour explorer un original a utiliser en lithographie, procede et dispositif pour etablir et ajuster une courbe de ton de separation des couleurs
CH690096A5 (fr) Dispositif et procédé de contrôle du registre dans une machine d'impression rotative polychrome.
FR3064783A1 (fr) Procede d'identification des cases a cocher d'un ticket de prise de pari
EP3251331B1 (de) Verfahren zum drucken eines bildes auf ein sicherheitsdokument, sicherheitsdokument und substrat mit einem durch solch ein verfahren gedruckten bild
FR3013255A1 (fr) Systeme video d'aide a la conduite des presses d'imprimerie par reglages d'encrage avec production d'un rapport colorimetrique de tirage
FR2726366A1 (fr) Procede de colorimetrie de zones colorees sur une surface d'un objet et un agencement de colorimetrie pour la mise en oeuvre de ce procede
US5040897A (en) Process for visually detecting a color drift in a polychrome reproduction
WO2018100200A1 (fr) Repositionnement d'une image sur l'ecran d'un appareil

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE FR GB IT LI SE

17P Request for examination filed

Effective date: 19970201

17Q First examination report despatched

Effective date: 19980831

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI SE

REF Corresponds to:

Ref document number: 188916

Country of ref document: AT

Date of ref document: 20000215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69606206

Country of ref document: DE

Date of ref document: 20000224

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20000314

ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: BA-GIORI S.A.

Free format text: KBA-GIORI S.A.#4, RUE DE LA PAIX#1003 LAUSANNE (CH) -TRANSFER TO- KBA-GIORI S.A.#AVENUE DU GREY 55 CASE POSTALE 347#1000 LAUSANNE 22 (CH)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20100324

Year of fee payment: 15

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: KBA-NOTASYS SA

Free format text: KBA-GIORI S.A.#AVENUE DU GREY 55 CASE POSTALE 347#1000 LAUSANNE 22 (CH) -TRANSFER TO- KBA-NOTASYS SA#AVENUE DU GREY 55 CASE POSTALE 347#1000 LAUSANNE 22 (CH)

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 69606206

Country of ref document: DE

Representative=s name: REBLE & KLOSE RECHTS- UND PATENTANWAELTE, DE

Effective date: 20111222

Ref country code: DE

Ref legal event code: R081

Ref document number: 69606206

Country of ref document: DE

Owner name: KBA-NOTASYS SA, CH

Free format text: FORMER OWNER: KBA-GIORI S.A., LAUSANNE, CH

Effective date: 20111222

REG Reference to a national code

Ref country code: AT

Ref legal event code: HC

Ref document number: 188916

Country of ref document: AT

Kind code of ref document: T

Owner name: KBA-NOTASYS SA, CH

Effective date: 20120419

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110305

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20130327

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140331

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20140325

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20140320

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20140425

Year of fee payment: 19

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 188916

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140304

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20140410

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

Owner name: KBA-NOTASYS SA, CH

Effective date: 20141223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140304

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69606206

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20150304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150304

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20151130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150331

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150304

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151001

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150331