DE202008018042U1 - Mosaikmire to measure the number of pixels of different contrast and color that dissolves the optical device and also to estimate the influence of moire - Google Patents

Mosaikmire to measure the number of pixels of different contrast and color that dissolves the optical device and also to estimate the influence of moire Download PDF

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DE202008018042U1
DE202008018042U1 DE200820018042 DE202008018042U DE202008018042U1 DE 202008018042 U1 DE202008018042 U1 DE 202008018042U1 DE 200820018042 DE200820018042 DE 200820018042 DE 202008018042 U DE202008018042 U DE 202008018042U DE 202008018042 U1 DE202008018042 U1 DE 202008018042U1
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mosaikmire
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measure
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    • 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
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • 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
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00007—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for relating to particular apparatus or devices
    • H04N1/00013—Reading apparatus
    • 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
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00026—Methods therefor
    • H04N1/00031—Testing, i.e. determining the result of a trial
    • 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
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00026—Methods therefor
    • H04N1/00045—Methods therefor using a reference pattern designed for the purpose, e.g. a test chart
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/0001—Diagnosis, testing or measuring; Detecting, analysis or monitoring not otherwise provided for
    • H04N2201/0003—Method used
    • H04N2201/0005—Method used using a reference pattern designed for the purpose, e.g. a test chart
    • H04N2201/0006—Method used using a reference pattern designed for the purpose, e.g. a test chart details of the reference pattern (DM 1105)

Abstract

Mosaikmire aus regelmäßig angeordneten Elementarzellen (Segmenten) des unterschiedlichen Maßes, dadurch gekennzeichnet, dass ihre Zellen durch die passende konzentrische logarithmische Spirale und/oder Polradien und/oder Kreisbogen und/oder Sehnen dieser Kurven so umrissen sind, dass sie sich in Form und Flächeninhalt an reguläres Polygon nähern, und dass ihre Zellen paarweise kontrastreich (beispielsweise wie Schachbrett) gefärbt sind.Mosaikmire of regularly arranged unit cells (segments) of different dimensions, characterized in that their cells are outlined by the matching concentric logarithmic spiral and / or polar radii and / or circular arcs and / or chords of these curves so that they are related in shape and area approach a regular polygon, and that their cells are colored in pairs with high contrast (for example like a chessboard).

Description

  • 1. Mosaikmire zu Messung der Anzahl der Bildelemente (Pixel) unterschiedlichen Kontrastes und Farbe, die das optische Gerät auflöst, und auch zu Schätzung des Einflusses des Moire.1. Mosaikmire to measure the number of picture elements (pixels) of different contrast and color, which dissolves the optical device, and also to estimate the influence of Moire.
  • 2.1. Die Messung der Auflösung in Linienpaare pro Längeneinheit entspricht nicht der Angabe der Auflösung in Pixel. Die neue Mire soll die Messung der Auflösung als Anzahl der Pixel ermöglichen.2.1. The measurement of the resolution in line pairs per unit length does not correspond to the definition of the resolution in pixels. The new Mire should allow the measurement of the resolution as the number of pixels.
  • 2.2. Die Mire wird durch die konzentrische logarithmische Spirale in Segmente geteilt, die paarweise kontrastreich gefärbt werden. Die Zeichnung (3) stellt eine Variante zur Messung der Auflösung im Abhängigkeit vom Kontrast und Farben vereinfacht und vergrößert dar.2.2. The mire is divided into segments by the concentric logarithmic spiral, which are colored in pairs in high contrast. The drawing (3) illustrates a variant for measuring the resolution as a function of the contrast and colors simplified and enlarged.
  • 2.3. Die Mire eignet sich zur Prüfung der optischen Geräte: Linsen, Objektiven, Kameras, Monitoren, Fernseher und Projektoren bis zu Scannern, Kopierern und Druckern.2.3. The Mire is suitable for testing the optical devices: lenses, lenses, cameras, monitors, televisions and projectors to scanners, copiers and printers.

Die Linearmire liefert die Auflösung pro Längeneinheit. Das entspricht nicht der Angabe der Auflösung in Pixel. Abhängigkeit der Auflösung vom Kontrast des Aufnahmeobjektes ( US 4575124 , US 5508803 , US 5760829 ) und Auflösung der farbigen Bildelemente ( US 5351201 , US 5917987 ) sind wesentliche Charakteristiken eines optischen Gerätes. Die Bildqualität der digitalen Geräte ist von Moire beeinflusst ( US 4386849 ). Weißabgleich und Farbwiedergabe werden durch andere Tests kontrolliert. Bei Bedarf ist es auch möglich Mosaikmire so zu gestalten, dass die Farbwiedergabe mit kontrolliert wird.The Linearmire provides the resolution per unit length. This does not match the resolution in pixels. Dependence of the resolution on the contrast of the subject ( US 4575124 . US 5508803 . US 5760829 ) and resolution of the colored picture elements ( US 5351201 . US 5917987 ) are essential characteristics of an optical device. The image quality of digital devices is influenced by Moire ( US 4386849 ). White balance and color reproduction are controlled by other tests. If necessary, it is also possible to make Mosaikmire so that the color reproduction is controlled with.

Eigentliches Hauptziel der Erfindung ist, die Voraussetzungen für direkte Messung der Anzahl der Bildelemente (Pixel), die das optische Gerät auflöst, zu schaffen.The main object of the invention is to create the conditions for directly measuring the number of picture elements (pixels) that the optical device resolves.

Der im Schutzanspruch 1 angegebenen Erfindung liegt das Problem zugrunde, die Mire so zu gestalten, dass ihre Elemente sowohl dem digitalen Begriff „Pixel” annähernd entsprechen und für optisches Gerät unterscheidbar sind ( US 4513318 , US 5454048 ) als auch bei variablen Flächeninhalten ein lückenloses Muster bilden. Das heißt, ein Mosaik aus unterschiedlich großen Elementen, die regulären Polygone in Form und in Flächeninhalt approximieren, zu gestalten.The protection specified in claim 1 invention is based on the problem to make the Mire so that their elements both the digital term "pixel" correspond approximately and are distinguishable for optical device ( US 4513318 . US 5454048 ) as well as with variable surface contents form a gapless pattern. That is, to design a mosaic of different sized elements that approximate regular polygons in shape and in area.

Dieses Problem wird durch die im Schutzanspruch 1 aufgeführten Merkmale – die Teilung der Mire durch die konzentrische logarithmische Spirale und die paarweise kontrastreiche Färbung der Segmente – gelöst. 1–4 stellen das schematisch dar. Polradien und Kreisbogen können als entartete logarithmische Spirale betrachtet werden. Nutzung der Sehnen anstatt dieser Kurven ändert nichts Wesentliches.This problem is solved by the features listed in the protection claim 1 - the division of the Mire by the concentric logarithmic spiral and the pairwise contrasting coloring of the segments -. 1 - 4 illustrate this schematically. Polar radii and circular arcs can be regarded as a degenerate logarithmic spiral. Using the tendons instead of these curves does not change anything essential.

Die mit der Erfindung erzielten Vorteile, die eine direkte Messung der Anzahl der auflösbaren Pixel ermöglichen, bestehen insbesondere darin, dass der Flächeninhalt der gleichförmigen Segmente sich regelmäßig verändert und vorbestimmt ist; damit ist die Anzahl solcher Segmente, die das Bild mit der bekannten Flächengröße bilden, auch vorbestimmt. Bei der Messung sollen nun die kleinsten Segmente, die das Gerät noch auflöst, ausgesucht werden. Die Auflösung des Gerätes in „Pixel” entspricht der Anzahl dieser Segmente im Bild.The advantages achieved by the invention, which allow a direct measurement of the number of resolvable pixels, are, in particular, that the area of the uniform segments is regularly changed and predetermined; so that the number of such segments that form the image with the known area size is also predetermined. During the measurement, the smallest segments that the device still dissolves should now be selected. The resolution of the device in "pixels" corresponds to the number of these segments in the image.

Das Muster der Mosaikmire im Zusammenhang mit dem inneren Muster des digitalen Gerätes führen zum Moire, insbesondere dort, wo die Elemente der Mire und die Elemente des Gerätes fast gleich orientiert sind. Durch den Vergleich der unterschiedlichen Zonen könnte der Einfluss des Moire auf die Bildqualität geschätzt werden. 2–4 stellen wesentlich unterschiedliche Muster der Quadrate dar; die entsprechenden Moire werden sich auch wesentlich unterscheiden. Der Vergleich solcher Moire verspricht genauere Schätzung.The pattern of the Mosaikmire in connection with the inner pattern of the digital device lead to Moire, especially where the elements of the Mire and the elements of the device are oriented almost the same. By comparing the different zones, the impact of Moire on image quality could be estimated. 2 - 4 represent significantly different patterns of squares; the corresponding moires will also differ significantly. The comparison of such Moire promises more accurate estimate.

Eine vorteilhafte Ausgestaltung der Erfindung ist im Schutzanspruch 2 angegeben. Die Weiterbildung nach Schutzanspruch 2 ermöglicht es, die Abhängigkeit der Auflösung des Gerätes vom Kontrast des Aufnahmeobjektes durch Betrachten der Zellenpaare mit verschiedenen Kontrasten messen zu können.An advantageous embodiment of the invention is specified in the protection claim 2. The development according to protection claim 2 makes it possible to measure the dependence of the resolution of the device on the contrast of the recording object by viewing the cell pairs with different contrasts.

Eine weitere vorteilhafte Ausgestaltung der Erfindung ist im Schutzanspruch 3 angegeben. Die Weiterbildung nach Schutzanspruch 3 ermöglicht es, die Abhängigkeit der Auflösung des Gerätes vom Kontrast des Aufnahmeobjektes leichter und genauer messen zu können. 5 stellt vereinfachte Variante dar.A further advantageous embodiment of the invention is specified in the protection claim 3. The development of protection claim 3 makes it possible to measure the dependence of the resolution of the device on the contrast of the subject more easily and accurately. 5 represents simplified variant.

Eine andere vorteilhafte Ausgestaltung der Erfindung ist im Schutzanspruch 4 angegeben. Die Weiterbildung nach Schutzanspruch 4 ermöglicht es, die Anzahl der farbigen Bildelemente, die das Gerät auflöst, messen zu können. 6–7 stellen zwei Varianten schematisch dar.Another advantageous embodiment of the invention is specified in the protection claim 4. The development according to protection claim 4 makes it possible to measure the number of colored pixels that dissolves the device. 6 - 7 represent two variants schematically.

Eine weitere vorteilhafte Ausgestaltung der Erfindung ist im Schutzanspruch 5 angegeben (8, vereinfacht). Die Weiterbildung nach Schutzanspruch 5 ermöglicht es, sowohl die Abhängigkeit der Auflösung vom Kontrast des Aufnahmeobjektes als auch die Anzahl der farbigen Bildelemente, die das Gerät auflöst, messen zu können. A further advantageous embodiment of the invention is specified in the protection claim 5 ( 8th , simplified). The development according to protection claim 5 makes it possible to measure both the dependence of the resolution of the contrast of the subject and the number of colored pixels that dissolves the device.

Eine weitere vorteilhafte Ausgestaltung der Erfindung ist im Schutzanspruch 6 angegeben (5–8, vereinfacht). Die Weiterbildung nach Schutzanspruch 6 ermöglicht es, die Anzahl der Bildelemente, die das Gerät auflöst, leichter messen zu können.A further advantageous embodiment of the invention is specified in the protection claim 6 ( 5 - 8th , simplified). The development of protection claim 6 makes it possible to measure the number of pixels that dissolves the device easier.

Für die Beurteilung der Patenfähigkeit in Betracht gezogene Druckschriften: US 4386849 07.06.1983 G. Häeusler,... G01B 9/00 US 4513318 23.04.1985 B. F. Wilensky,... H04N 7/02, H04N 9/62 US 4575124 11.03.1986 E. F. Morrison, B42D 15/00, G01J 1/02, H04N 17/00 US 4628342 09.12.1986 G. Desmons, H04N 17/00 US 4760447 26.07.1988 N. R. Koka,... H04N 17/00, H04N 7/08 US 4761685 02.08.1988 T. Asaida,... H04N 17/00 US 5351201 27.09.1994 J. H. Harshbarger,... G01B 11/00 US 5454048 26.09.1995 D. S. Davis, G06K 9/00, G06F 7/36 US 5508803 16.04.1996 M. S. Hibbs,... G01J 1/02 US 5760829 02.06.1998 J. W. Sussmeier, H04N 17/00 US 5820547 13.10.1998 K. Strobl,... A61B 1/00, H04N 17/00 US 5917987 29.06.1999 Y. Neuman, H04N 9/79 US 6356298 B1 12.03.2002 T. Abe,... H04N 13/02 US 2005/0275724 A1 15.12.2005 L. E. Albertelli, G01C 21/02 US 6992696 B1 31.01.2006 L. E. Albertelli, H04N 17/00 US 2007/0076981 A1 05.04.2007 H. J. Ojanen, G06K 9/36 Documents considered for the assessment of godparenthood: US 4386849 07.06.1983 G. Häeusler, ... G01B 9/00 US 4513318 23.04.1985 BF Wilensky, ... H04N 7/02, H04N 9/62 US 4575124 03/11/1986 EF Morrison, B42D 15/00, G01J 1/02, H04N 17/00 US 4628342 09.12.1986 G. Desmons, H04N 17/00 US 4760447 26.07.1988 NR Coca, ... H04N 17/00, H04N 7/08 US 4761685 02.08.1988 T. Asaida, ... H04N 17/00 US 5351201 27.09.1994 JH Harshbarger, ... G01B 11/00 US 5454048 26.09.1995 DS Davis, G06K 9/00, G06F 7/36 US 5508803 16.04.1996 MS Hibbs, ... G01J 1/02 US 5760829 02.06.1998 JW Sussmeier, H04N 17/00 US 5820547 13.10.1998 K. Strobl, ... A61B 1/00, H04N 17/00 US 5917987 29.06.1999 Y. Neuman, H04N 9/79 US 6356298 B1 12.03.2002 T. Abe, ... H04N 13/02 US 2005/0275724 A1 15.12.2005 LE Albertelli, G01C 21/02 US 6992696 B1 31.01.2006 LE Albertelli, H04N 17/00 US 2007/0076981 A1 05.04.2007 HJ Ojanen, G06K 9/36

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • US 4575124 [0001, 0012] US 4575124 [0001, 0012]
  • US 5508803 [0001, 0012] US 5508803 [0001, 0012]
  • US 5760829 [0001, 0012] US 5760829 [0001, 0012]
  • US 5351201 [0001, 0012] US 5351201 [0001, 0012]
  • US 5917987 [0001, 0012] US 5917987 [0001, 0012]
  • US 4386849 [0001, 0012] US 4386849 [0001, 0012]
  • US 4513318 [0003, 0012] US 4513318 [0003, 0012]
  • US 5454048 [0003, 0012] US 5454048 [0003, 0012]
  • US 4628342 [0012] US 4628342 [0012]
  • US 4760447 [0012] US 4760447 [0012]
  • US 4761685 [0012] US 4761685 [0012]
  • US 5820547 [0012] US 5820547 [0012]
  • US 6356298 B1 [0012] US 6356298 B1 [0012]
  • US 2005/0275724 A1 [0012] US 2005/0275724 A1 [0012]
  • US 6992696 B1 [0012] US 6992696 B1 [0012]
  • US 2007/0076981 A1 [0012] US 2007/0076981 A1 [0012]

Claims (6)

Mosaikmire aus regelmäßig angeordneten Elementarzellen (Segmenten) des unterschiedlichen Maßes, dadurch gekennzeichnet, dass ihre Zellen durch die passende konzentrische logarithmische Spirale und/oder Polradien und/oder Kreisbogen und/oder Sehnen dieser Kurven so umrissen sind, dass sie sich in Form und Flächeninhalt an reguläres Polygon nähern, und dass ihre Zellen paarweise kontrastreich (beispielsweise wie Schachbrett) gefärbt sind.Mosaikmire from regularly arranged unit cells (segments) of different dimensions, characterized in that their cells are outlined by the appropriate concentric logarithmic spiral and / or Polradien and / or circular arc and / or tendons of these curves so that they are in shape and area approach regular polygons, and that their cells are in pairs contrasted (for example, like checkerboard) colored. Mosaikmire nach Anspruch 1, dadurch gekennzeichnet, dass ihre Zellen Schwarz, Weis und Grau verschiedene Graustufen gefärbt sind.Mosaikmire according to claim 1, characterized in that their cells black, white and gray are colored different shades of gray. Mosaikmire nach Anspruch 2, dadurch gekennzeichnet, dass ihre Zellenpaare in Gruppen nach Kontraststufen vereint sind.Mosaikmire according to claim 2, characterized in that their cell pairs are united in groups by contrast levels. Mosaikmire nach Anspruch 1, dadurch gekennzeichnet, dass ihre Zellen in drei Grundfarben (nach Bedarf auch in andere Farben) gefärbt sind.Mosaikmire according to claim 1, characterized in that their cells are colored in three primary colors (as needed in other colors). Mosaikmire nach Anspruch 1, dadurch gekennzeichnet, dass ihre Zeilen sowohl Schwarz, Weis und Grau verschiedene Graustufen als auch in drei Grundfarben (nach Bedarf auch in andere Farben) gefärbt sind.Mosaikmire according to claim 1, characterized in that their lines both black, white and gray different shades of gray as well as in three primary colors (if necessary, in other colors) are colored. Mosaikmire nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass ihre Zellengruppen nach Maß nummeriert sind.Mosaikmire according to one of claims 1 to 5, characterized in that their cell groups are numbered to measure.
DE200820018042 2008-03-13 2008-03-13 Mosaikmire to measure the number of pixels of different contrast and color that dissolves the optical device and also to estimate the influence of moire Expired - Lifetime DE202008018042U1 (en)

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US4575124A (en) 1982-04-05 1986-03-11 Ampex Corporation Reproducible gray scale test chart for television cameras
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Publication number Priority date Publication date Assignee Title
EP2863201A1 (en) * 2013-10-18 2015-04-22 Point Grey Research Inc. Apparatus and methods for characterizing lenses

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