WO2001024106A1 - Code a barres multidimensionnel et appareil de lecture de code a barres multidimensionnel - Google Patents

Code a barres multidimensionnel et appareil de lecture de code a barres multidimensionnel Download PDF

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Publication number
WO2001024106A1
WO2001024106A1 PCT/CH2000/000472 CH0000472W WO0124106A1 WO 2001024106 A1 WO2001024106 A1 WO 2001024106A1 CH 0000472 W CH0000472 W CH 0000472W WO 0124106 A1 WO0124106 A1 WO 0124106A1
Authority
WO
WIPO (PCT)
Prior art keywords
marking
marks
color
array
reading
Prior art date
Application number
PCT/CH2000/000472
Other languages
English (en)
Inventor
Philip L. Vinal
Edgar Müller
Original Assignee
Sicpa Holding S.A.
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 Sicpa Holding S.A. filed Critical Sicpa Holding S.A.
Priority to AU66802/00A priority Critical patent/AU6680200A/en
Publication of WO2001024106A1 publication Critical patent/WO2001024106A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
    • G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/12—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using a selected wavelength, e.g. to sense red marks and ignore blue marks

Definitions

  • This invention relates to a product marking and a method of applying and reading a marking.
  • the most common product markings comprise a barcode.
  • Common barcodes consist of a series of parallel stripes of different widths which are printed on a product or label, and convey coded information about the product.
  • the product code can be read optically, then linked to other information such as pricing, source and stock information.
  • U.S. Patent 5,160,171 and EP 340 898 disclose barcodes which are created by overprinting a color barcode with a transparent printing ink containing infrared absorbers.
  • U.S. Patent 5,360,235 discloses the general idea of a security marking employing a printing ink having ultraviolet absorbers.
  • EP 420 613 describes the printing of two kinds of barcodes, one on top of the other.
  • U.S. Patent 3,684,868 describes the use of materials having reflectivity in the infrared and visible spectral domains in conjunction with differently colored bar codes.
  • the present invention contemplates adding a spectral, or color, dimension to a two- dimensional barcode symbology, resulting in a substantial enlargement of storage capacity, so that more data can be printed in a limited space.
  • the spectral dimension is obtained by using a set of N colorants, each having a particular absorption band which is not covered by any other member of the set. This way, N distinct barcodes, preferably two-dimensional barcodes, can be superposed on top of the other, thus creating said multi-dimension. Layers of luminescent materials may be added as well.
  • An object of the invention is to increase the information content of a product marking.
  • a marking which includes at least one two- dimensional code of a first color, comprising a two-dimensional array of marks of said first color arranged to represent information according to an encoding algorithm, and at least one mark or array of marks in a second color, arranged to represent additional information.
  • the second array is also a two-dimensional barcode, and the barcodes are preferably in mutual alignment with one another, although a lack of alignment can be compensated for electronically.
  • “In alignment” shall mean a) one mark on top of the other thereby covering the marks below fully or in part; and b) shall mean, marks side by side with different colors printed.
  • the second color be in the invisible spectrum (infrared or ultraviolet).
  • the term "color” is mainly used synonymous to "spectral absorption” and/or to absorption reflection properties as specified further below.
  • the marks are made with an ink, they may be conveniently applied with an ink jet printer.
  • a video camera associated with a computer which includes software for forming virtual images of the respective codes, and a decoder for interpreting the marks.
  • the various code arrays are distinguished by periodically moving filters of different color, inserted in front of a monochrome camera, or alternatively, by using a corresponding "color" camera.
  • Figure 1 is a diagram showing the composition of a first barcode embodying the invention
  • Figure 2 is a diagram showing the composition of a second embodiment of the invention.
  • Figure 3 is a schematic diagram of a system for reading a multi-dimensional barcode embodying the present invention.
  • Figure 4 is a schematic diagram of a modified system in accordance with figure 3 to read a UV and IR marking of a code.
  • Figure 1 shows diagrammatically a product marking comprising three two- dimensional barcodes 10,12,14 of different colors which are printed, one on top of the other, on a product or label, to produce a composite multi-dimensional marking 16 having a spectral dimension.
  • Each of the component codes comprises a two-dimensional array of marks arranged in rows and columns according to a known, if needed secret, encoding algorithm. This algorithm may contain error-checking functions to reduce reading errors, which may occur when the marks have faded or become damaged.
  • the marks need not to be round; the term is meant, in a general sense, to connote colored areas, which may be circles, polygons, or the like, that can be detected by an optical reader.
  • Each of the inks used to produce each pattern has a distinct optical absorption property, designated hereafter as color (i.e., has a characteristic absorption/ reflection signature which makes it distinguishable from the other inks when read by an optical reader).
  • color shall stand for absorption/reflection properties over the whole range of the electromagnetic spectrum, preferably for "light” (visible and invisible ) wavelengths in the range of between 100 nm to 1 mm (far UV to far IR range).
  • the inks may be applied by various means, including an ink-jet printer. With this arrangement, it is important that the inks of higher layers be substantially transparent to some of the reflected or emitted light of the lower layers, so that information in the lower layers is not lost.
  • the detected "color" of each ink can be due to effects in the visible, infrared, or ultraviolet spectrum.
  • at least one of the array of marks, preferably a barcode is magnetic and/or has magneto-optical properties. The latter means that the optical response to incident light depends on the magnetic field applied.
  • the magnetic properties, i.e. whether a mark is magnetic or not, can be detected in a magnetic field.
  • An advantage of multi-dimensional codes, particularly barcodes having a color dimension, is that they are difficult to recognize and to read with the naked eye, and thus are useful in product security applications, on currency, and on security badges and the like.
  • An additional advantage is that much more information can be stored in a given area than with a single-color two-dimensional code.
  • Figure 1 shows the patterns having been applied in alignment, it is not a requirement of this invention that the patterns be aligned as long as the reader is designed to read each pattern regardless of its offset.
  • Figure 2 shows an alternative form of the invention wherein the layers of information are neither stacked, nor aligned.
  • the information contained in a composite barcode 20 (as shown in Figure 1) is split between the visible array 22 of dots on the left, and an invisible array 24, on the right.
  • the visible array alone cannot be decoded with a standard reader and decoder because the information it contains is incomplete.
  • One must be equipped to read the invisible array, which may have more than one type of invisible pigment requiring a special reader.
  • the information derived from the invisible array 24 completes the information contained in the visible array 22. Both information can be processed in a computer.
  • each of the multi-dimensional codes can be read by a monochrome video camera 30 connected to a computer 32 which includes a frame grabber interface, and corresponding decoding hardware and software, not shown.
  • a filter tray 34 is used to switch periodically between the filters 36 corresponding to the different spectral domains of observation, that is, the colors of the codes.
  • the tray 34 is rotated by a step motor 38, which in turn is controlled by the computer 32. This arrangement requires precise mechanical synchronization between the filter tray and the camera.
  • Multicolor CCD's are essentially high definition monochrome CCD chips, superposed with a corresponding color micro-filter plate. For example, four squares of adjacent pixels are combined in this way to form red-green-blue- white super-pixels. Multicolor CCD's have the advantage of intrinsic stability. That is, every pixel is hardware-assigned to a determinate color of a determinate image point.
  • a sequential filter wheel would be that of a liquid crystal tunable filter, not shown.
  • This is a filter device having a narrow (about 50 nm) spectral transmission window, which can be electrically tuned across a large part of the optical spectrum.
  • Sequential reading may also be achieved by using two or more light sources to cause different colors to become visible for the reader, particularly a camera.
  • a UV light source 40 and an IR light source 42 are arranged in a way that the surface of substrate 44 is illuminated.
  • the substrate 44 comprises a first array 46 of marks which provide a visible response if they are illuminated with IR source 42.
  • a second array of marks 48 is provided on substrate 44 which becomes visible when it is illuminated with UV source 40.
  • Light source 42 and light source 40 are connected to a power supply 50 which is activated by PC 32.
  • the IR light source 42 and the UV light source 40 may be activated sequentially. Thereby, the respective marks and the codes they are representing become visible for the camera 30.
  • the tray 34 comprising different filters may additionally be used to differentiate between the different colors responding to illumination.
  • the term "light source” in this context means any device which emits visible or invisible light in one or more frequencies. Such light sources include lamps with or without filters to define frequencies, laser-light, LED-light sources or any other device which emits light in a suitable frequency range to make a marking visible for a reader, such as a camera
  • the marking may be a positive mark, i.e. a dot, a bar or any other geometric form. Alternatively, the whole surface of a substrate may be provided with a specific color and the marks be covered to create an inverse array of information.
  • the mark may be applied by non-impact printers, such as ink-jet printers to allow fast printing. However, depending on the label or product to be marked, desired marking speed and the number of marks to be applied, other marking or printing techniques, including impact printers may be applied. Particularly letter-press, gravure, lithography or screen-printing techniques may be used.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

Des codes à barres bidimensionnels de différentes couleurs sont imprimés les uns au-dessus des autres de façon à réaliser un code à barres à teneur informative accrue. L'un au moins des codes à barres peut être imprimé invisible à l'oeil nu de façon qu'il y ait besoin d'un équipement spécial pour lire l'information. Un appareil pour la lecture du code à barres multidimensionnel comporte une matrice de filtres ou analogues permettant de distinguer les couleurs, et comporte de préférence des organes de décodage de l'information.
PCT/CH2000/000472 1999-09-27 2000-09-05 Code a barres multidimensionnel et appareil de lecture de code a barres multidimensionnel WO2001024106A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU66802/00A AU6680200A (en) 1999-09-27 2000-09-05 Multi-dimensional barcode and apparatus for reading a multi-dimensional barcode

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40610499A 1999-09-27 1999-09-27
US09/406,104 1999-09-27

Publications (1)

Publication Number Publication Date
WO2001024106A1 true WO2001024106A1 (fr) 2001-04-05

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AU (1) AU6680200A (fr)
WO (1) WO2001024106A1 (fr)

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10207180B4 (de) * 2001-10-19 2004-02-19 Leuze Electronic Gmbh + Co Kg Verfahren zur Kennzeichnung von Gegenständen mittels Strichcodes und Vorrichtung zum Lesen von Strichcodes
GR20030100390A (el) * 2003-09-22 2005-05-18 Σωκρατης Σαβελιδης Μεθοδος παραστασης και συσκευη διαχειρισης πληροφοριας
GB2397681B (en) * 2001-10-01 2005-12-07 Fryco Ltd Optical encoding
DE102004057495A1 (de) * 2004-11-29 2006-06-01 Siemens Ag Feld zur Darstellung farbcodierter Daten, Verfahren zur Codierung von Daten, Verfahren zur Eingabe von Daten
GB2431032A (en) * 2005-10-05 2007-04-11 Hewlett Packard Development Co Data encoding pattern comprising markings composed of coloured sub-markings
DE102007006230A1 (de) * 2007-02-08 2008-08-14 nano-com Inc., Newark Farbpixel-Kodierung
WO2008127950A2 (fr) * 2007-04-12 2008-10-23 Honeywell International Inc. Procédé et système de création et de lecture d'empreintes émissives coplanaires multicolores à l'aide de colorants et de pigments imprimables
US7980473B2 (en) 2008-02-28 2011-07-19 Microsoft Corporation Camera based code reading
WO2012050571A1 (fr) * 2010-10-12 2012-04-19 Hewlett-Packard Development Company, L.P. Système de génération d'une marque de sécurité 3d complétée par incrément
WO2012076534A1 (fr) 2010-12-07 2012-06-14 Sicpa Holding Sa Marquage composite à base de précurseurs chiraux de cristaux liquides
CN102750564A (zh) * 2012-05-14 2012-10-24 王安然 动态二维码及其解码方法
WO2012163778A1 (fr) 2011-05-27 2012-12-06 Sicpa Holding Sa Substrat portant un marquage polymère cristal liquide modifié
WO2015004129A1 (fr) 2013-07-10 2015-01-15 Sicpa Holding Sa Marquage comprenant un code imprimable et une couche de polymère de cristal liquide chiral
WO2015067683A1 (fr) 2013-11-08 2015-05-14 Sicpa Holding Sa Marquage composite sans sel à base de précurseurs chiraux de cristaux liquides comprenant des dopants chiraux d'acrylate
WO2016109767A1 (fr) * 2014-12-31 2016-07-07 Vasco Data Security, Inc. Procédés, systèmes et appareil permettant l'échange de données au moyen d'images en couleur
WO2016120382A1 (fr) 2015-01-30 2016-08-04 Sicpa Holding Sa Authentification d'un article de sécurité et identification simultanée de l'utilisateur de l'article de sécurité
WO2016120383A1 (fr) 2015-01-30 2016-08-04 Sicpa Holding Sa Authentification simultanée d'un article de sécurité et identification de l'utilisateur de l'article de sécurité
WO2016162479A1 (fr) 2015-04-10 2016-10-13 Sicpa Holding Sa Appareil portable mobile pour l'authentification d'un article de sécurité, et procédé de fonctionnement de l'appareil d'authentification portable
US9477853B2 (en) 2011-09-08 2016-10-25 Hewlett-Packard Development Company, L.P. Generating an incremental information object
EP2628131A4 (fr) * 2010-10-12 2018-01-17 Hewlett-Packard Development Company, L.P. Système de génération d'une marque de sécurité complétée par incréments
WO2018045712A1 (fr) * 2016-09-09 2018-03-15 中兴通讯股份有限公司 Procédé permettant d'identifier une image de code bidimensionnel, et terminal mobile
JP2018507583A (ja) * 2015-02-19 2018-03-15 トロイ グループ，インク． 不可視二次元バーコード及びプリント画像のセキュア化方法
CN109686228A (zh) * 2018-12-21 2019-04-26 广东石油化工学院 隐形商标防伪方法
CN109766975A (zh) * 2018-12-21 2019-05-17 北京印刷学院 二维码覆盖红外互补识别防伪方法
US10308872B2 (en) 2013-11-08 2019-06-04 Sicpa Holding Sa Composite marking based on chiral liquid crystal precursors and modifying resins
WO2020101635A1 (fr) 2018-11-12 2020-05-22 Hewlett-Packard Development Company, L.P. Repère à motifs multiples pour systèmes de capteurs d'imagerie hétérogènes
US10762371B1 (en) 2019-11-14 2020-09-01 Capital One Services, Llc Object detection techniques using colorspace conversions
WO2020190854A1 (fr) * 2019-03-18 2020-09-24 Capital One Services, Llc Détection d'images par rapport à des cibles faisant appel à des techniques de transformation d'espace chromatique et utilisant de la lumière ultraviolette et infrarouge
US10796122B1 (en) 2019-03-18 2020-10-06 Capital One Services, Llc Optimizing detection of images in relation to targets based on colorspace transformation techniques
US10833852B1 (en) 2019-10-03 2020-11-10 Capital One Services, Llc Encoded data along tape based on colorspace schemes
US10867226B1 (en) 2019-11-04 2020-12-15 Capital One Services, Llc Programmable logic array and colorspace conversions
US10878600B1 (en) 2019-12-10 2020-12-29 Capital One Services, Llc Augmented reality system with color-based fiducial marker utilizing local adaptive technology
US10977535B2 (en) 2019-03-18 2021-04-13 Capital One Services, Llc Detection of images in relation to targets based on colorspace transformation techniques and utilizing infrared light
US10977462B2 (en) 2019-03-18 2021-04-13 Capital One Services, Llc Detection of images in relation to targets based on colorspace transformation techniques and utilizing ultraviolet light
US11003968B2 (en) 2019-04-24 2021-05-11 Capital One Services, Llc Colorspace encoding multimedia data on a physical page
US11024256B2 (en) 2019-06-20 2021-06-01 Capital One Services, Llc Adaptive image display based on colorspace conversions
US11184150B2 (en) 2019-04-18 2021-11-23 Capital One Services, Llc Transmitting encoded data along transmission mediums based on colorspace schemes
US11200751B2 (en) 2019-07-25 2021-12-14 Capital One Services, Llc Augmented reality system with color-based fiducial marker
US11302036B2 (en) 2020-08-19 2022-04-12 Capital One Services, Llc Color conversion between color spaces using reduced dimension embeddings
US11342943B2 (en) 2019-10-25 2022-05-24 Capital One Services, Llc Data encoding with error-correcting code pursuant to colorspace schemes
WO2022233458A1 (fr) * 2021-05-04 2022-11-10 Armin Khadjavi Code 3d

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WO1998050882A2 (fr) * 1997-05-05 1998-11-12 Intermec Technologies Corporation Procede et appareil pour symbologie multicolore

Cited By (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2397681B (en) * 2001-10-01 2005-12-07 Fryco Ltd Optical encoding
DE10207180B4 (de) * 2001-10-19 2004-02-19 Leuze Electronic Gmbh + Co Kg Verfahren zur Kennzeichnung von Gegenständen mittels Strichcodes und Vorrichtung zum Lesen von Strichcodes
GR20030100390A (el) * 2003-09-22 2005-05-18 Σωκρατης Σαβελιδης Μεθοδος παραστασης και συσκευη διαχειρισης πληροφοριας
DE102004057495A1 (de) * 2004-11-29 2006-06-01 Siemens Ag Feld zur Darstellung farbcodierter Daten, Verfahren zur Codierung von Daten, Verfahren zur Eingabe von Daten
GB2431032A (en) * 2005-10-05 2007-04-11 Hewlett Packard Development Co Data encoding pattern comprising markings composed of coloured sub-markings
DE102007006230A1 (de) * 2007-02-08 2008-08-14 nano-com Inc., Newark Farbpixel-Kodierung
DE102007006230B4 (de) * 2007-02-08 2013-03-14 NANO-COM GmbH Farbpixel-Kodierung
WO2008127950A2 (fr) * 2007-04-12 2008-10-23 Honeywell International Inc. Procédé et système de création et de lecture d'empreintes émissives coplanaires multicolores à l'aide de colorants et de pigments imprimables
JP2010527053A (ja) * 2007-04-12 2010-08-05 ハネウェル・インターナショナル・インコーポレーテッド 印刷可能な染料及び色素を使用して多色共面放射性証印を作成し読み取るための方法とシステム
WO2008127950A3 (fr) * 2007-04-12 2009-03-26 Honeywell Int Inc Procédé et système de création et de lecture d'empreintes émissives coplanaires multicolores à l'aide de colorants et de pigments imprimables
US20150069117A1 (en) * 2007-04-12 2015-03-12 Honeywell International Inc. Method and system for creating and reading multi-color co-planar emissive indicia using printable dyes and pigments
US8905313B2 (en) 2007-04-12 2014-12-09 Honeywell International Inc. Method and system for creating and reading multi-color co-planar emissive indicia using printable dyes and pigments
US7980473B2 (en) 2008-02-28 2011-07-19 Microsoft Corporation Camera based code reading
US8857727B2 (en) 2010-10-12 2014-10-14 Hewlett-Packard Development Company, L.P. System for generating an incrementally completed 3D security mark
EP2628131A4 (fr) * 2010-10-12 2018-01-17 Hewlett-Packard Development Company, L.P. Système de génération d'une marque de sécurité complétée par incréments
WO2012050571A1 (fr) * 2010-10-12 2012-04-19 Hewlett-Packard Development Company, L.P. Système de génération d'une marque de sécurité 3d complétée par incrément
WO2012076534A1 (fr) 2010-12-07 2012-06-14 Sicpa Holding Sa Marquage composite à base de précurseurs chiraux de cristaux liquides
US8821756B2 (en) 2011-05-27 2014-09-02 Sicpa Holding Sa Substrate with a modified liquid crystal polymer marking
WO2012163778A1 (fr) 2011-05-27 2012-12-06 Sicpa Holding Sa Substrat portant un marquage polymère cristal liquide modifié
US9477853B2 (en) 2011-09-08 2016-10-25 Hewlett-Packard Development Company, L.P. Generating an incremental information object
CN102750564B (zh) * 2012-05-14 2016-03-30 王安然 动态二维码及其解码方法
CN102750564A (zh) * 2012-05-14 2012-10-24 王安然 动态二维码及其解码方法
WO2015004129A1 (fr) 2013-07-10 2015-01-15 Sicpa Holding Sa Marquage comprenant un code imprimable et une couche de polymère de cristal liquide chiral
US9579922B2 (en) 2013-07-10 2017-02-28 Sicpa Holding Sa Marking comprising a printable code and a chiral liquid crystal polymer layer
US10308872B2 (en) 2013-11-08 2019-06-04 Sicpa Holding Sa Composite marking based on chiral liquid crystal precursors and modifying resins
US10611919B2 (en) 2013-11-08 2020-04-07 Sicpa Holding Sa Salt-free composite marking based on chiral liquid crystal precursors comprising chiral acrylate dopants
WO2015067683A1 (fr) 2013-11-08 2015-05-14 Sicpa Holding Sa Marquage composite sans sel à base de précurseurs chiraux de cristaux liquides comprenant des dopants chiraux d'acrylate
WO2016109767A1 (fr) * 2014-12-31 2016-07-07 Vasco Data Security, Inc. Procédés, systèmes et appareil permettant l'échange de données au moyen d'images en couleur
WO2016120383A1 (fr) 2015-01-30 2016-08-04 Sicpa Holding Sa Authentification simultanée d'un article de sécurité et identification de l'utilisateur de l'article de sécurité
US10445955B2 (en) 2015-01-30 2019-10-15 Sicpa Holding Sa Simultaneous authentication of a security article and identification of the security article user
WO2016120382A1 (fr) 2015-01-30 2016-08-04 Sicpa Holding Sa Authentification d'un article de sécurité et identification simultanée de l'utilisateur de l'article de sécurité
US10403061B2 (en) 2015-01-30 2019-09-03 Sicpa Holding Sa Simultaneous authentication of a security article and identification of the security article user
JP2018507583A (ja) * 2015-02-19 2018-03-15 トロイ グループ，インク． 不可視二次元バーコード及びプリント画像のセキュア化方法
US10713347B2 (en) 2015-04-10 2020-07-14 Sicpa Holding Sa Mobile, portable apparatus for authenticating a security article and method of operating the portable authentication apparatus
WO2016162479A1 (fr) 2015-04-10 2016-10-13 Sicpa Holding Sa Appareil portable mobile pour l'authentification d'un article de sécurité, et procédé de fonctionnement de l'appareil d'authentification portable
WO2018045712A1 (fr) * 2016-09-09 2018-03-15 中兴通讯股份有限公司 Procédé permettant d'identifier une image de code bidimensionnel, et terminal mobile
WO2020101635A1 (fr) 2018-11-12 2020-05-22 Hewlett-Packard Development Company, L.P. Repère à motifs multiples pour systèmes de capteurs d'imagerie hétérogènes
US11537832B2 (en) 2018-11-12 2022-12-27 Hewlett-Packard Development Company, L.P. Multiple-pattern fiducial for heterogeneous imaging sensor systems
CN112955904A (zh) * 2018-11-12 2021-06-11 惠普发展公司，有限责任合伙企业 异构成像传感器系统的多图案基准
EP3881235A4 (fr) * 2018-11-12 2022-06-15 Hewlett-Packard Development Company, L.P. Repère à motifs multiples pour systèmes de capteurs d'imagerie hétérogènes
CN109766975A (zh) * 2018-12-21 2019-05-17 北京印刷学院 二维码覆盖红外互补识别防伪方法
CN109686228A (zh) * 2018-12-21 2019-04-26 广东石油化工学院 隐形商标防伪方法
WO2020190854A1 (fr) * 2019-03-18 2020-09-24 Capital One Services, Llc Détection d'images par rapport à des cibles faisant appel à des techniques de transformation d'espace chromatique et utilisant de la lumière ultraviolette et infrarouge
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