EP1492079B1 - Méthode de sortie d'un document digital d'une application n'étant pas prévue pour la gestion des couleurs sur un appareil de sortie, avec correction de couleurs parmi un module de programme additionnel - Google Patents

Méthode de sortie d'un document digital d'une application n'étant pas prévue pour la gestion des couleurs sur un appareil de sortie, avec correction de couleurs parmi un module de programme additionnel Download PDF

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Publication number
EP1492079B1
EP1492079B1 EP03013442A EP03013442A EP1492079B1 EP 1492079 B1 EP1492079 B1 EP 1492079B1 EP 03013442 A EP03013442 A EP 03013442A EP 03013442 A EP03013442 A EP 03013442A EP 1492079 B1 EP1492079 B1 EP 1492079B1
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EP
European Patent Office
Prior art keywords
output
application
output device
colour
color
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
EP03013442A
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German (de)
English (en)
Other versions
EP1492079A1 (fr
Inventor
Martin Beyer
Björn Seegers
Klaus Gödde
Francis Lamy
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.)
Logo Beteiligungs GmbH
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Logo Beteiligungs GmbH
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Application filed by Logo Beteiligungs GmbH filed Critical Logo Beteiligungs GmbH
Priority to DE50311550T priority Critical patent/DE50311550D1/de
Priority to EP03013442A priority patent/EP1492079B1/fr
Priority to US10/873,235 priority patent/US20050024698A1/en
Publication of EP1492079A1 publication Critical patent/EP1492079A1/fr
Application granted granted Critical
Publication of EP1492079B1 publication Critical patent/EP1492079B1/fr
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/28—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using colour tubes
    • G09G1/285—Interfacing with colour displays, e.g. TV receiver
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed

Definitions

  • the invention relates to a method for outputting a digital document on an output device controlled by an output computer according to the preamble of the independent claim.
  • a color management system allows a color-true reproduction of an image template in a digital workflow, which can include an input medium (eg scanner or digital camera and several output media (eg monitor, digital projector and printer)
  • the RGB image can be displayed on the monitor or by means of a beamer, or converted into printing inks for output on a printer.
  • the color-true reproduction is achieved through the use of device profiles and color space transformations reached on the basis of these device profiles.
  • a device profile describes the color space of an input or output device by giving the device-specific color values (eg RGB or CMYK) absolute color values (XYZ or CIELab L * a * b *) according to the specifications of the CIE (Commission Internationale de l'Eclairage ) or other non-device-specific color values (eg sRGB) assigns.
  • a device profile typically consists of various color value replacement tables (look-up tables) and coefficients of a color space transformation matrix.
  • the Color Management System For color-true image reproduction, the Color Management System combines the profile of the input medium (source profile) and the profile of the output medium (target profile) to obtain a transfer characteristic. The color management system also performs a mapping of the color space of the input device to the color space of the output device. This illustration ensures that all colors can be displayed on the output medium.
  • the picture, d. H. The rescaling of the color spaces is carried out according to various reproduction criteria, the so-called rendering intents. A distinction is made between the modes “Perceptual” (same color impression in the picture), “Relative Colorimetric”, “Absolute Colorimetric” and “Saturation”, which are defined in the document ICC-1: 1998-09 of the International Color Consortium (ICC).
  • this application program In place of the input medium can also be an application program, with which the image template on the screen can be created directly in digital form.
  • this application program (referred to below as the application for short) must contain a color management system and access and process profiles.
  • the application In order for the methods of color management to be applicable in this case too, this application program (referred to below as the application for short) must contain a color management system and access and process profiles.
  • such an application is fully ICC compliant, so that it can access and use the basic color management functions provided by the computer's operating system.
  • currently widespread presentation applications such as e.g. Microsoft PowerPoint or Apple Keynote are not ICC compliant, or at least they do not have a color management system or can not access and process profiles.
  • Such applications are referred to below as colorless management applications. Therefore, documents created with such applications (presentations) usually result in the presentation with a digital projector (beamer) or the expression of a color impression on the monitor on which they were created, often significantly different color impression.
  • document EP-A-1150159 describes a method for playing a digital document.
  • the document is prepared in a first computer with a screen by an installed presentation application and in a second computer, where the same presentation application is also installed, by a playback device, such as a projector, played back.
  • ICC profiles for the screen and for the playback device are stored in the second computer and are used to adjust the color of the document to the color characteristics of the playback device.
  • the presentation application can not access and process such ICC profiles, and color correction based on the device profiles can take place on the display data output by the application and transmitted to the playback device; in the EP-A-1150159 it is also briefly mentioned without details, that as an alternative, the color correction can also be performed by a plug-in program for the presentation application.
  • the present invention is now to overcome this difficulty and create a possibility in the output of created by means of color management applications digital documents on an output device, especially a digital projector, the most accurate color match between reach the monitor display and the display generated by the output device.
  • a digital document D for example a presentation, to be presented later (to be output at an output device) takes place on a preparation computer RE by means of a color management-less application A running thereupon, for example Microsoft Power Point.
  • a monitor M is connected, on which the document D is displayed visually during the creation.
  • no color management is involved.
  • the finished digital document D is then in the form of a digital file.
  • the later presentation of the digital document D is normally carried out on another computer via a suitable output device, typically a digital electronic projector (projector) B, which is connected to this other computer designated here as an output computer RA and is controlled by it ( Fig.2 ).
  • a suitable output device typically a digital electronic projector (projector) B, which is connected to this other computer designated here as an output computer RA and is controlled by it ( Fig.2 ).
  • the same color management application A is installed on the output computer RA.
  • the digital document D is loaded in the usual way in the application A (opened with the application A) and can be output to the projector B in the usual way.
  • the digital document D can also be displayed on a monitor, not shown here, belonging to the output computer RA.
  • a special program module PM is installed on the output computer RA according to an essential main aspect of the invention, which provides the functionalities of a color management system for the current application A. ( Fig. 2 ).
  • This program module PM contains, on the one hand, a color transformation unit CMM and, on the other hand, interface functions F, which allow it to access the digital document D loaded in the application A and to change this within the application A.
  • interface functions F further unspecified routines are also included, by means of which, possibly taking into account the possibly provided by the operating system of the output computer RA basis color management functions on the output computer RA stored ICC profile files MP, PCS, BP can be accessed ,
  • the color transformation unit CMM is nothing more than a fast computing software e.g. in the form of a stand-alone dynamic program library (DLL) containing the necessary mathematical algorithms for color conversion. ICC profiles provide the corresponding parameters and fill the mathematical algorithms with values.
  • the color transformation unit CMM used may be a commercially available color management module, preferably the Color Management Module "LogoSync" developed by the aforementioned company Logo GmbH.
  • the program module PM is typically designed as a supplementary module (add-in) to application A, wherein the interface functions F form the software-technical framework for the supplementary functions in the existing application A.
  • the programming of this framework is based on the specifications of application A for the creation and integration of supplementary modules (add-ins).
  • an ICC device profile referred to below as the monitor profile MP is generated by the monitor M on which the digital document D was created. This can be carried out in a manner known per se by means of commercially available measuring devices and associated profiling programs. Particularly suitable is the profiling software "EyeOne Match", marketed by the aforementioned company Logo GmbH, in conjunction with the spectrophotometer EyeOne marketed by Gretag-Macbeth AG, also mentioned above. How this is going on in detail is in the documentation for this profiling software as well as in the EP-A-1 150 159 described in detail.
  • the monitor profile MP is then stored in the output computer RA as a file with a standardized format.
  • an output device profile BP is generated in an analogous manner from the output device used for the purpose of use, here for example by the digital projector B, and likewise stored in the output computer RA.
  • the generation of a device profile for a digital projector is also in the EP-A-1 150 159 described in detail.
  • the color transformation is, as already mentioned, carried out by means of the program module PM.
  • the interface functions F access the data of the digital document D in application A and feed them to the color transformation unit CMM.
  • the interface functions F load the monitor profile MP stored on the output computer RA, the output device profile BP stored there as well as the working color space profile PCS (normally sRGB) stored or provided by the operating system into the color transformation unit CMM.
  • the actual color transformation conversion into the color space of the output device B
  • the conversion itself takes place in a manner known per se and, if necessary, taking into account the so-called rendering intent mentioned in the introduction (typically "perceptual" by default).
  • the data of the converted or color-transformed digital document D ' are fed back to the application A via the interface functions F and replace there the data of the original digital document D.
  • the interface functions F causes the output of the converted document D' to the output device B.
  • the conversion preferably takes place separately for all objects contained in the digital document D.
  • the program module PM preferably provides the application A with an additional menu function, by means of which the user can make various selections and make adjustments as well as start the color transformation and subsequent output of the color-transformed digital document. For example, you can In this way, different working color spaces, different monitor profiles MP and different output device profiles BP can be selected, whereby of course it is a prerequisite that these color space and device profiles are present on the output computer RA.
  • Another menu item could be the selection of a rendering intent that will be used if the source color space (of the monitor M) is larger than the destination color space (of the output device B), ie a color space adjustment (gamut mapping) is required is.
  • a menu item can also be provided, which activates the recognition of ICC profiles embedded in image objects of the digital document D, so that these embedded profiles can be used in the color transformation.
  • VBA Visual Basic for Applications
  • VBA scripts can be saved as a module and manually or automatically loaded as an add-in to the application and run from there.
  • VBA makes all objects, properties and methods of PowerPoint available and allows their almost arbitrary manipulation.
  • VBA makes it easy to integrate additional menus into PowerPoint, from which additional functions implemented as VBA code can be triggered.
  • VBA provides the object "Presentation" that represents the loaded digital document with its contained objects and allows access to it.
  • the image data of the digital object are copied into a buffer and are transferred from there to the color transformation unit CMM for conversion.
  • another VBA routine reads out the converted data from the color transformation unit CMM and writes it back into the object "presentation" in a suitable form (whereby the original data is replaced, ie a modified presentation is created.
  • the digital document D on a e.g. to display the output monitor connected to the output computer RA.
  • this monitor would constitute the output device, and instead of the beamer profile BP, an output monitor profile generated for this output monitor would have to be used as the output device profile.
  • output device e.g. a printer is used.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
  • Color Image Communication Systems (AREA)

Claims (6)

  1. Procédé de sortie d'un document numérique sur un appareil de sortie contrôlé par un ordinateur de sortie, le document à sortir (D) ayant été créé avec une application (A) sans gestion des couleurs, qui ne peut pas avoir accès aux profils de l'appareil et ne peut pas traiter ces profils, installée sur un ordinateur de création (RE) avec un moniteur connecté (M), et l'application (A) sans gestion des couleurs étant installée sur l'ordinateur de sortie (RA) et étant utilisée par le biais de ce dernier pour la sortie du document (D) sur l'appareil de sortie (B), un profil de moniteur (MP) conforme au ICC pour le moniteur (M) de l'ordinateur de création (RE) étant créé et étant enregistré sur l'ordinateur de sortie (RA), un profil d'appareil de sortie (BP) conforme au ICC pour l'appareil de sortie (B) utilisé étant créé et étant enregistré sur l'ordinateur de sortie (RA), et un module de programme (PM) contenant une unité de transformation des couleurs (CMM) étant installé sur l'ordinateur de sortie (RA), lequel module de programme est réalisé pour une collaboration avec l'application (A) sans gestion des couleurs et met à disposition de celle-ci une fonction de gestion des couleurs, caractérisé en ce que le module de programme (PM) peut avoir accès au document numérique (D) chargé dans l'application (A) à sortir, en ce qu'au moyen de la fonction de gestion des couleurs mise à disposition par le module de programme (PM) en utilisant le profil de moniteur (MP) enregistré et le profil de l'appareil de sortie (BP) enregistré, le document numérique (D) est converti dans l'espace de couleurs de l'appareil de sortie (B) par l'unité de transformation des couleurs (CCM), et en ce que le document ainsi converti (D') est sorti de l'application (A) sur l'appareil de sortie (B).
  2. Procédé selon la revendication 1, caractérisé en ce qu'un projecteur électronique numérique (B) est utilisé comme appareil de sortie.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'application sans gestion des couleurs (A) est une application pour créer des présentations.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le module de programme (PM) est réalisé comme un module d'extension pour l'application (A) sans gestion des couleurs.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la transformation du document (D) dans l'espace de couleurs de l'appareil de sortie (B) est effectuée selon les principes de la gestion des couleurs établis par le ICC.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que pour la transformation du document (D) au moyen d'une unité de transformation des couleurs (CCM), le profil de moniteur (MP) est utilisé comme profil source et le profil de l'appareil de sortie (BP) est utilisé comme profil cible.
EP03013442A 2003-06-23 2003-06-23 Méthode de sortie d'un document digital d'une application n'étant pas prévue pour la gestion des couleurs sur un appareil de sortie, avec correction de couleurs parmi un module de programme additionnel Expired - Lifetime EP1492079B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE50311550T DE50311550D1 (de) 2003-06-23 2003-06-23 Verfahren zur Ausgabe eines digitalen Dokuments aus einer Farbmanagementlosen Anwendung auf einem Ausgabegerät, mit Farbkorrektur durch ein zusätzliches Programm-Modul
EP03013442A EP1492079B1 (fr) 2003-06-23 2003-06-23 Méthode de sortie d'un document digital d'une application n'étant pas prévue pour la gestion des couleurs sur un appareil de sortie, avec correction de couleurs parmi un module de programme additionnel
US10/873,235 US20050024698A1 (en) 2003-06-23 2004-06-23 Process for the output of a digital document on an output device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03013442A EP1492079B1 (fr) 2003-06-23 2003-06-23 Méthode de sortie d'un document digital d'une application n'étant pas prévue pour la gestion des couleurs sur un appareil de sortie, avec correction de couleurs parmi un module de programme additionnel

Publications (2)

Publication Number Publication Date
EP1492079A1 EP1492079A1 (fr) 2004-12-29
EP1492079B1 true EP1492079B1 (fr) 2009-05-27

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EP03013442A Expired - Lifetime EP1492079B1 (fr) 2003-06-23 2003-06-23 Méthode de sortie d'un document digital d'une application n'étant pas prévue pour la gestion des couleurs sur un appareil de sortie, avec correction de couleurs parmi un module de programme additionnel

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US (1) US20050024698A1 (fr)
EP (1) EP1492079B1 (fr)
DE (1) DE50311550D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7755637B2 (en) * 2006-07-14 2010-07-13 Canon Kabushiki Kaisha Initialization of color appearance model

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WO1996001467A1 (fr) * 1994-07-01 1996-01-18 Apple Computer, Inc. Procede et systeme pour l'integration d'un profil d'appareil dans un document et l'extraction dudit profil d'un document dans un systeme de gestion de couleurs
US5646752A (en) * 1995-09-15 1997-07-08 Canon Information Systems, Inc. Color image processing apparatus which uses private tags to alter a predefined color transformation sequence of a device profile
JP3764797B2 (ja) * 1997-04-17 2006-04-12 株式会社リコー 色変換処理装置およびその方法並びにその方法をコンピュータに実行させるプログラムを記録したコンピュータ読み取り可能な記録媒体
JP4174090B2 (ja) * 1997-10-31 2008-10-29 キヤノン株式会社 画像処理方法、装置および記録媒体
US6567119B1 (en) * 1998-03-26 2003-05-20 Eastman Kodak Company Digital imaging system and file format for storage and selective transmission of processed and unprocessed image data
JPH11305970A (ja) * 1998-04-27 1999-11-05 Canon Inc 画像処理装置、方法および記録媒体
WO2000029935A1 (fr) * 1998-11-13 2000-05-25 E-Color, Inc. Procede pour presenter en haute resolution des images couleur transmises dans un reseau
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EP1150159A1 (fr) * 2000-04-27 2001-10-31 Gretag-Macbeth AG Méthode, système et dispositif de projection pour la représentation visuelle d'une image digitale sur une surface de projection et instrument de mesure de lumière pour ce système
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Also Published As

Publication number Publication date
EP1492079A1 (fr) 2004-12-29
DE50311550D1 (de) 2009-07-09
US20050024698A1 (en) 2005-02-03

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