DE2851452A1 - Colours identification on coloured surface - is performed using illuminating lamp of known spectral composition for sweep detector system - Google Patents

Colours identification on coloured surface - is performed using illuminating lamp of known spectral composition for sweep detector system

Info

Publication number
DE2851452A1
DE2851452A1 DE19782851452 DE2851452A DE2851452A1 DE 2851452 A1 DE2851452 A1 DE 2851452A1 DE 19782851452 DE19782851452 DE 19782851452 DE 2851452 A DE2851452 A DE 2851452A DE 2851452 A1 DE2851452 A1 DE 2851452A1
Authority
DE
Germany
Prior art keywords
color
colors
detector system
sample
spectral composition
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.)
Granted
Application number
DE19782851452
Other languages
German (de)
Other versions
DE2851452C2 (en
Inventor
Klaus Dipl Ing Dr Wellendorf
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Dr Ing Rudolf Hell GmbH
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 Dr Ing Rudolf Hell GmbH filed Critical Dr Ing Rudolf Hell GmbH
Priority to DE2851452A priority Critical patent/DE2851452C2/en
Priority to CH1040779A priority patent/CH646788A5/en
Priority to SE7909698A priority patent/SE445857B/en
Priority to IL58800A priority patent/IL58800A/en
Priority to BR7907644A priority patent/BR7907644A/en
Priority to DD79217166A priority patent/DD147409A5/en
Priority to IT27576/79A priority patent/IT1165384B/en
Priority to NL7908627A priority patent/NL7908627A/en
Priority to JP54153076A priority patent/JPS6027976B2/en
Priority to GB7941066A priority patent/GB2040038B/en
Priority to BE0/198324A priority patent/BE880303A/en
Priority to FR7929324A priority patent/FR2443053B1/en
Publication of DE2851452A1 publication Critical patent/DE2851452A1/en
Priority to US06/324,615 priority patent/US4414635A/en
Priority to GB08306628A priority patent/GB2115642B/en
Application granted granted Critical
Publication of DE2851452C2 publication Critical patent/DE2851452C2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/462—Computing operations in or between colour spaces; Colour management systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/62—Retouching, i.e. modification of isolated colours only or in isolated picture areas only
    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J2003/466—Coded colour; Recognition of predetermined colour; Determining proximity to predetermined colour
    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/51—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters
    • G01J3/513—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters having fixed filter-detector pairs

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Image Communication Systems (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

A coloured surface is illuminated by a lampo with a known spectral composition so that the colours can be identified. The coordinate positions are also determined to control textile processing machines. A coloured surfaces is illuminated by lamps and the intensities of the three primary colours reflected from it are measured optically and electrically by a sweep detector system. The colour components are compared with fixed values obtained from sample points and when coincidence occurs identification symbols are generated.

Description

Kennwort: "Digitale Farberkennung"Password: "Digital color recognition"

Verfahren zur Trennung bzw. Erkennung von Farben.Process for separating or recognizing colors.

Die vorliegende Erfindung betrifft ein Verfahren zur Trennung bzw. Erkennung von Farben gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a method for separating or Recognition of colors according to the preamble of claim 1.

Es tritt häufig das Problem auf, daß Farben von Vorlagen oder Mustern voneinander zu trennen oder zu erkennen sind. Bisher wurde die Vorlage oder das Muster optisch-elektrisch abgetastet und die so erhaltenen Farbsignale mit Schwellwerten verglichen, wodurch die Farbe bestimmt wurde. Nachteile dieser Vorgehensweise liegen darin, daß die Einstellung der Schwellwerte zeitraubend ist und daß mit erträglichem Aufwand nur eine begrenzte Anzahl von Farben erkannt werden kann.The problem often arises that the colors of originals or patterns separated from each other or recognizable. So far, the template or the Samples are optically-electrically scanned and the color signals obtained in this way with threshold values compared, whereby the color was determined. Disadvantages of this approach are that the setting of the threshold values is time-consuming and that it is tolerable Effort only a limited number of colors can be recognized.

Aufgabe der vorliegenden Erfindung ist es, ein verbessertes Verfahren zur Trennung bzw. Erkennung von Farben anzugeben.The object of the present invention is to provide an improved method to indicate the separation or recognition of colors.

Diese Aufgabe wird durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen 2-5 angegeben.This task is carried out by the characterizing part of the claim 1 specified features solved. Advantageous further developments are in the subclaims 2-5 specified.

Die Erfindung wird an dem folgenden Beispiel näher erläutert.The invention is explained in more detail using the following example.

Bei der Bestimmung der Farben wird eine farbige Vorlage oder ein Farbmuster mit Hilfe einer bekannten optisch-elektrischen Abtasteinrichtung untersucht. Solche Abtasteinrichtungen, welche trichromatische Farbmeßwertsignale liefern, sind dem Fachmann allgemein bekannt, z.B. DE-PS 11 72 540, weshalb auf eine nähere Darstellung und Beschreibung verzichtet wird.When determining the colors, a colored template or a color sample is used examined with the aid of a known optical-electrical scanning device. Such Scanning devices which supply trichromatic color measurement signals are the Generally known to those skilled in the art, e.g. DE-PS 11 72 540, which is why we refer to a more detailed description and description is omitted.

Zur Durchführung des erfindungsgemäßen Verfahrens werden einzelne, für die zu bestimmenden Farben charakteristische Vorlagenpunkte abgetastet und die so erhaltenen Farbmeßwertsignale digitalisiert. Diese Digitalwerte werden als Eingangsadressen für einen Speicher verwendet. Eine Anordnung, die hierzu geeignet ist, ist z.B. der DE-AS 21 37 676, Fig. 10, zu entnehmen.To carry out the method according to the invention, individual, for the colors to be determined characteristic template points are scanned and the color measurement signals obtained in this way are digitized. These digital values are used as input addresses used for a memory. An arrangement suitable for this is e.g. DE-AS 21 37 676, Fig. 10, can be found.

Für die spätere Bestimmung der Farben werden in den Speicher unter den durch die Probenabtastung gewonnenen Adressen Farbidentifikationssymbole eingegeben. Wird nun ein Farbmuster bei der Farbbestimmung abgetastet, so werden die gewonnenen Farbsignale ebenfalls digitalisiert und als Eingangsadressen an den bereits gefüllten Speicher angelegt. Hierdurch wird das sich durch die frühere Probenentnahme und Zuordnung ergebene Identifikationssymbol aufgerufen und ausgegeben. Soll z.B. nur eine Farbe erkannt werden, so wird bei der Probenentnahme die Zuordnung so gewählt, daß nur einer Farbmeßwertkombination oder einem diese umgebenen Bereich im Farbraum ein Farbidentifikationssymbol zugeordnet wird. Wird bei der Abtastung diese Farbmeßwertkobmination oder dieser Bereich angetroffen, so ist die entsprechende Farbe bestimmt.For the later determination of the colors are in the memory below color identification symbols are inputted to the addresses obtained by the sample scan. If a color sample is now scanned during the color determination, these are obtained Color signals also digitized and used as input addresses to the already filled Memory created. This will result in the earlier sampling and Assignment resulting identification symbol called up and output. Should e.g. only a color can be recognized, the assignment is selected when the sample is taken so that that only one color measurement combination or one surrounding area in the color space a color identification symbol is assigned. This color measurement value combination is used during scanning or if this area is encountered, the corresponding one is colour certainly.

Es ist leicht einzusehen, daß es auch möglich ist1 auf diese Weise eine Vielzahl von Farben zu bestimmen, indem man mehreren Farbmeßwertkombinationen oder Bereichen solche Identifikationssymbole zuordnet. Es ist weiterhin möglich, für alle bei der Abtastung eines Farbmusters vorkommenden Farbmeßwerte vor der Bestimmung der Farbe entsprechende Farbidentifikationssymbole im Speicher zu definieren.It is easy to see that it is also possible1 in this way Determine a variety of colors by taking multiple color measurement combinations or assigns such identification symbols to areas. It is still possible for all color measurement values occurring during the scanning of a color sample before the determination define color identification symbols corresponding to the color in memory.

In einer vorteilhaften Weiterbildung der Erfindung kann man sich aber auch auf eine begrenzte Anzahl von charakteristischen Farbproben beschränken und die Füllung des Speichers für die zu diesen Proben gehörenden Farbbereiche unter Vorgabe entsprechender Bereichsgrenzen rechnerisch bestimmen.In an advantageous development of the invention, however, you can also restrict to a limited number of characteristic color samples and the filling of the memory for the color areas belonging to these samples below Determine the specification of the corresponding range limits arithmetically.

Ein Vortieil dieses Verfahrens besteht darin, daß die Festlegung der Farberkennungsbereiche optimal im Hinblick auf zu erkennenden Farben bzw. Farbbereiche erfolgen kann.One advantage of this method is that the determination of the Color recognition areas optimal with regard to colors or color areas to be recognized can be done.

Es ergeben sich hierdurch vielfältige Anwendungsgebiete, in denen es auf die Erkennung von Farben, Farbbereichen oder auf quantitative Auswertung farbiger Bilder oder Farbproben ankommt.This results in a wide variety of areas of application in which it depends on the recognition of colors, color areas or on quantitative evaluation colored pictures or color samples arrives.

Claims (5)

Kennwort iitaIe Farberkennung Patentanspriiche Verfahren zur Trennung bzw. Erkennung von Farben, dadurch gekennzeichnet, daß vor der Farbbesta mmang für jede zu unterscheidende Farbe mindestens ein charakteristischer Probenpunkt hinsichtlich seiner Farbkomponenten fotoelektrisch ausgemessen wird, daß die so erhaltenen elektrischen Farbsignale festgehalten (gespeichert) werden und jeder Probe bzw. den zugehörigen Farbsignalen ein Identifikationssymbol zugeordnet wird und daß zur Farbbestimmung die Farben fotoelektrisch abgetastet, die dabei gewonnenen Farbsignale mit den Farbsignalen der Proben verglichen und bei übereinstimmung die entsprechenden Identifikationssymbole ausgegeben werden.Password iitaIe color recognition Patent claims method of separation or detection of colors, characterized in that before the color determination for each color to be distinguished with regard to at least one characteristic sample point its color components is measured photoelectrically that the thus obtained electrical Color signals are recorded (stored) and each sample or the associated Color signals are assigned an identification symbol and that for color determination the colors are scanned photoelectrically, the color signals obtained with the color signals of the samples compared and, if they match, the corresponding identification symbols are issued. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Identifikationssymbole in einem Speicher unter Adressen abgelegt werden, welche durch Digitalisierung der von den Probenpunkten erhaltenen Farbsignale gewonnen werden. 2. The method according to claim 1, characterized in that the identification symbols be stored in a memory under addresses, which by digitizing the color signals obtained from the sample points can be obtained. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zur Bildung von Farberkennungsräumen im Speicher mehrere Speicheradressen dasselbe Identifikationssymbol zugeordnet wird. 3. The method according to claim 1 or 2, characterized in that To form color recognition spaces in the memory, several memory addresses are the same Identification symbol is assigned. 4. Verfahren nach einem der Ansprüche 1-3, dadurch gekennzeichnet, daß vor der Farbbestiinrnung für jeden möglichen Abtastwert durch Probenentnahme eine Zuordnung von Adresse und Identifikationssymbol vorgenommen wird.4. The method according to any one of claims 1-3, characterized in, that prior to color determination for each possible sample by sampling an assignment of address and identification symbol is made. 5. Verfahren nach einem der Ansprüche 1-3, dadurch gekennzeichnet, daß die Zuordnung aus einer Anzahl von Proben bestimmt wird, die geringer als die Anzahl der Abtastwerte ist.5. The method according to any one of claims 1-3, characterized in that that the assignment is determined from a number of samples that are less than Number of samples is.
DE2851452A 1978-11-28 1978-11-28 Method of recognizing colors Expired DE2851452C2 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
DE2851452A DE2851452C2 (en) 1978-11-28 1978-11-28 Method of recognizing colors
CH1040779A CH646788A5 (en) 1978-11-28 1979-11-22 METHOD AND CIRCUIT FOR DETECTING COLORS.
SE7909698A SE445857B (en) 1978-11-28 1979-11-23 PROCEDURES AND DEVICES FOR DETERMINATION OF SHIPS
BR7907644A BR7907644A (en) 1978-11-28 1979-11-26 PROCESS AND CONTROL CIRCUIT FOR THE IDENTIFICATION OF COLORS
IL58800A IL58800A (en) 1978-11-28 1979-11-26 Method and switch system for recognizing colours
IT27576/79A IT1165384B (en) 1978-11-28 1979-11-27 PROCEDURE AND RELEVANT CIRCUIT PROVISION, FOR THE RECOGNITION OF COLORS
DD79217166A DD147409A5 (en) 1978-11-28 1979-11-27 METHOD AND CIRCUIT ARRANGEMENT FOR DETECTING COLORS
NL7908627A NL7908627A (en) 1978-11-28 1979-11-28 METHOD AND SWITCHING DEVICE FOR RECOGNIZING COLORS.
JP54153076A JPS6027976B2 (en) 1978-11-28 1979-11-28 Method and circuit device for identifying colors
GB7941066A GB2040038B (en) 1978-11-28 1979-11-28 Methods and circuit for the recognition of colours
BE0/198324A BE880303A (en) 1978-11-28 1979-11-28 CONNECTION METHOD AND DEVICE FOR COLOR IDENTIFICATION
FR7929324A FR2443053B1 (en) 1978-11-28 1979-11-28 CONNECTION METHOD AND DEVICE FOR COLOR IDENTIFICATION
US06/324,615 US4414635A (en) 1978-11-28 1981-11-24 Method and circuit for recognition of colors
GB08306628A GB2115642B (en) 1978-11-28 1983-03-10 Recognition of colours

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2851452A DE2851452C2 (en) 1978-11-28 1978-11-28 Method of recognizing colors

Publications (2)

Publication Number Publication Date
DE2851452A1 true DE2851452A1 (en) 1980-06-04
DE2851452C2 DE2851452C2 (en) 1984-01-12

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ID=6055738

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2851452A Expired DE2851452C2 (en) 1978-11-28 1978-11-28 Method of recognizing colors

Country Status (2)

Country Link
JP (1) JPS6027976B2 (en)
DE (1) DE2851452C2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923468A1 (en) * 1979-06-09 1981-01-22 Hell Rudolf Dr Ing Gmbh Colours identification on coloured surface - is performed using illuminating lamp of known spectral composition for sweep detector system
DE2923473A1 (en) * 1979-06-09 1981-01-29 Hell Rudolf Dr Ing Gmbh Colours identification on coloured surface - is performed using illuminating lamp of known spectral composition for sweep detector system
DE2923477A1 (en) * 1979-06-09 1981-01-29 Hell Rudolf Dr Ing Gmbh Colours identification on coloured surface - is performed using illuminating lamp of known spectral composition for sweep detector system
DE4400021A1 (en) * 1994-01-03 1995-07-13 Andreas Dante Identifying colours of document original for colour blind persons

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0716235B2 (en) * 1983-03-08 1995-02-22 キヤノン株式会社 Color image processor
JPS59163980A (en) * 1983-03-08 1984-09-17 Canon Inc Color picture processing device
JPH0732460B2 (en) * 1983-03-08 1995-04-10 キヤノン株式会社 Color image processor
EP0144461B1 (en) * 1983-12-14 1987-05-20 DR.-ING. RUDOLF HELL GmbH Method of and circuit arrangement for the recognition of chrominances and colours
JPS60216351A (en) * 1984-04-12 1985-10-29 Fuji Photo Film Co Ltd Automatic setting method of gradation processing condition
JPS60216352A (en) * 1984-04-12 1985-10-29 Fuji Photo Film Co Ltd Automatic setting method of color correction condition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2214936A1 (en) * 1971-03-26 1972-10-12 Itek Corp., Lexington, Mass. (V.St.A.) Process for the production of schematically divided areas for the production of artistic reproductions of multicolored images
DE2640833A1 (en) * 1975-09-12 1977-03-17 Dainippon Screen Mfg PROCESS FOR COLOR CORRECTION FOR REPRODUCTION PURPOSES

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2214936A1 (en) * 1971-03-26 1972-10-12 Itek Corp., Lexington, Mass. (V.St.A.) Process for the production of schematically divided areas for the production of artistic reproductions of multicolored images
DE2640833A1 (en) * 1975-09-12 1977-03-17 Dainippon Screen Mfg PROCESS FOR COLOR CORRECTION FOR REPRODUCTION PURPOSES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923468A1 (en) * 1979-06-09 1981-01-22 Hell Rudolf Dr Ing Gmbh Colours identification on coloured surface - is performed using illuminating lamp of known spectral composition for sweep detector system
DE2923473A1 (en) * 1979-06-09 1981-01-29 Hell Rudolf Dr Ing Gmbh Colours identification on coloured surface - is performed using illuminating lamp of known spectral composition for sweep detector system
DE2923477A1 (en) * 1979-06-09 1981-01-29 Hell Rudolf Dr Ing Gmbh Colours identification on coloured surface - is performed using illuminating lamp of known spectral composition for sweep detector system
DE4400021A1 (en) * 1994-01-03 1995-07-13 Andreas Dante Identifying colours of document original for colour blind persons

Also Published As

Publication number Publication date
DE2851452C2 (en) 1984-01-12
JPS6027976B2 (en) 1985-07-02
JPS5576349A (en) 1980-06-09

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Owner name: LINOTYPE-HELL AG, 6236 ESCHBORN, DE

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