EP1479217A1 - Capteur d'image electronique et procede d'analyse - Google Patents

Capteur d'image electronique et procede d'analyse

Info

Publication number
EP1479217A1
EP1479217A1 EP03720128A EP03720128A EP1479217A1 EP 1479217 A1 EP1479217 A1 EP 1479217A1 EP 03720128 A EP03720128 A EP 03720128A EP 03720128 A EP03720128 A EP 03720128A EP 1479217 A1 EP1479217 A1 EP 1479217A1
Authority
EP
European Patent Office
Prior art keywords
individual
image sensor
sensor
sensors
pixels
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.)
Ceased
Application number
EP03720128A
Other languages
German (de)
English (en)
Inventor
Bernd Rüdiger STÖBER
Thomas TÜRKE
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Priority to EP04104410A priority Critical patent/EP1501276A3/fr
Priority to EP04104411A priority patent/EP1503569A3/fr
Publication of EP1479217A1 publication Critical patent/EP1479217A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • 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
    • H04N1/40—Picture signal circuits
    • H04N1/40056—Circuits for driving or energising particular reading heads or original illumination means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/40—Extracting pixel data from image sensors by controlling scanning circuits, e.g. by modifying the number of pixels sampled or to be sampled
    • H04N25/41—Extracting pixel data from a plurality of image sensors simultaneously picking up an image, e.g. for increasing the field of view by combining the outputs of a plurality of sensors

Definitions

  • the invention relates to an electronic image sensor and a method for evaluation according to the preamble of claims 1 or 14.
  • Generic image sensors are referred to as line sensors and are made up of a large number of light-sensitive pixels which are arranged along a line.
  • the individual pixels convert light input signals into electrical output signals and thereby allow electronic evaluation of the image information recorded with the image sensor.
  • Such line sensors are used, for example, in the inspection of printed products, in particular in the inspection of value notes.
  • the required number of pixels of the line sensor essentially depends on the width of the object to be recorded and the resolution with respect to the object required for the application. Since the width of the object to be photographed can vary greatly depending on the application and smaller and smaller structures should be detectable, high-resolution special sensors are used according to the prior art, which, however, cause high procurement costs.
  • DE 40 24 618 A1 discloses a device for recording surface information with several sensors, each of which is assigned a lens device. The surface information is supplied to these lens devices by means of beam splitting devices.
  • JP 63-240261 A shows two CCD line sensors, each of which is assigned an optical system and whose image areas overlap. These overlapping image areas are stored and read selectively from the memory.
  • the invention has for its object to provide an electronic image sensor and a method for evaluation.
  • the invention is based on the basic idea of replacing the costly special sensor with the desired line width by a combination of several individually controllable and evaluable individual sensors.
  • Such individual sensors are available as standard components and are therefore relatively inexpensive.
  • the number of individual sensors can be varied in order to ensure the required sensor width overall.
  • Each of the individual sensors is equipped with its own optics for imaging an image area.
  • the individual sensors are arranged next to one another in the direction of their longitudinal axis, a certain distance being present between the individual sensors, depending on the application.
  • all individual sensors are then controlled and evaluated jointly by an evaluation device, so that the image information received in the evaluation device corresponds to the image information as would be provided by a special sensor with a corresponding width.
  • All of the individual sensors are arranged on a common carrier element in order to ensure that the individual sensors are sufficiently precisely aligned with one another using simple means.
  • This carrier element can in particular be designed as an electronic circuit board on which the individual sensors are fitted.
  • part of the control and evaluation electronics of the evaluation device can also be provided on the electronics board.
  • the individual sensors are designed as partially readable sensors. With these partially readable sensors, it is possible to hide individual pixels of each individual sensor as a function of their respective geometric arrangement in the individual sensor. If, for example, it is known that no relevant image information is to be expected in a certain image section, this image area can be masked out by correspondingly controlling the partially readable sensors, so that the image data to be evaluated in the evaluation device are reduced accordingly.
  • color information can also be recorded and passed on to the evaluation device.
  • CMOS sensors Complementary Metal Oxide Semiconductors
  • CMOS sensors are particularly suitable for forming image sensors according to the invention, since they are available at a very favorable price / performance ratio.
  • CMOS sensors have an image structure corresponding to a memory chip, so that individual pixels such as memory cells can be queried. It is therefore only necessary to read out picture elements that are actually to be evaluated.
  • the image sensor can be arranged at a distance relative to the object to be recorded, so that the image areas of the object to be recorded that can be detected by the individual sensors overlap at least slightly.
  • the overlapping areas which are then recorded twice by adjacent individual sensors, can then be filtered out again in the evaluation device using appropriate evaluation algorithms.
  • FIG. 1 shows the schematic structure of an image sensor in a first operating state
  • FIG. 2 shows the image sensor according to FIG. 1 in a second operating state.
  • the image sensor 01 shown in FIG. 1 has four individual sensors 02; 03; 04 and 06, which are equipped on a common electronics board 07. Each of the individual sensors 02; 03; An optical system 08 is assigned to 04 and 06, through which an object 09 to be recorded can be imaged along a line on the individual sensors 02 to 06.
  • the individual sensors, 02; 03; 04 and 06, the optics 08 and the object 09 to be recorded are each arranged on a straight line according to FIG. 1.
  • the image areas of the object 09 to be recorded are located directly opposite each optics 08.
  • the properties of the optics 08 and the distance between the image sensors 01 and the object 09 to be recorded are selected such that, on the one hand, the The entire width of the object 09 to be recorded can be imaged on the individual sensors 02 to 06 and, on the other hand, the image areas that can be detected by the individual sensors 02 to 06 each have at least a slight overlap.
  • Each of the individual sensors 02 to 06 is constructed from a large number of pixels arranged side by side, which can be controlled individually depending on their geometric arrangement. This allows selective masking of individual image areas in order to reduce the amount of image data to be processed.
  • the object 09 to be recorded has two important features 11 and 12, the presence and geometric position of which is to be evaluated by the evaluation device.
  • the other areas of the object 09 to be recorded are irrelevant for the evaluation.
  • the pixels of the individual sensors 02 to 06 are selectively read out. Since there are no important features in the image area of the object 09 to be recorded by the individual sensor 06, the pixels of the individual sensor 06 are not read out at all, so that the corresponding image area is completely hidden.
  • the necessary parameters for the image field restriction can be specified to the image sensor by the evaluation device.
  • the important feature 12 of the object 09 to be recorded is from recorded the middle pixel of the individual sensor 04. Accordingly, only the middle pixels of the individual sensor 04 are read out, whereas the pixels arranged on the left and right edges of the individual sensor 04 are hidden.
  • the important feature 11 is located on the object 09 in such a way that it is partially picked up by the individual sensors 02 and 03. Since only the position of the feature 11 is of interest, the individual sensors 02 and 03 are controlled in such a way that only the pixels on the left edge are read in the individual sensor 02 and only the pixels on the right edge in the individual sensor 03. All other pixels of the individual sensors 02 and 03 are not read out, so that the corresponding image areas of the object 09 are hidden.
  • the overlap area is calculated out and the image data is also converted in such a way that the data to be evaluated correspond to the geometric shape of the feature 11.
  • FIG. 2 shows the image sensor 01 in a second operating state.
  • this operating state all pixels of the individual sensors 02 to 06 are read out, so that a line is recorded and evaluated over the entire width of the object 09 to be recorded.
  • the recording areas of the individual sensors 02 to 06 overlap slightly in order to exclude gaps in the recording area of the image sensor 01 as a whole.
  • the image sensor passes each pixel on the entire scanning line only once to the subsequent evaluation device.
  • the resolution can also be reduced in partial areas of the entire scanning line by reading out subpixels (gaps are left between the read pixels).
  • subpixels are left between the read pixels.
  • areas of different importance can be read out here with full or reduced resolution.
  • the image sensor can be used in particular for the inspection of printed products.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Input (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Image Processing (AREA)
  • Solid State Image Pick-Up Elements (AREA)
  • Facsimile Heads (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Studio Devices (AREA)

Abstract

L'invention concerne un capteur d'image électronique et un procédé d'analyse d'un capteur d'image électronique, qui présente plusieurs capteurs individuels pourvus chacun de plusieurs pixels. Selon cette invention, les pixels d'au moins un capteur individuel ne sont lus que partiellement, de sorte que chaque zone d'image est masquée de façon sélective, ce qui permet de réduire la quantité de données d'image à traiter.
EP03720128A 2002-02-26 2003-02-22 Capteur d'image electronique et procede d'analyse Ceased EP1479217A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04104410A EP1501276A3 (fr) 2002-02-26 2003-02-22 Procédé d'analyse pour un capteur d'image électronique
EP04104411A EP1503569A3 (fr) 2002-02-26 2003-02-22 Procédé d'analyse pour une capteur d'image électronique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10208289A DE10208289C1 (de) 2002-02-26 2002-02-26 Elektronischer Bildsensor und ein Verfahren zur Auswertung
DE10208289 2002-02-26
PCT/DE2003/000570 WO2003073745A1 (fr) 2002-02-26 2003-02-22 Capteur d'image electronique et procede d'analyse

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP04104411A Division EP1503569A3 (fr) 2002-02-26 2003-02-22 Procédé d'analyse pour une capteur d'image électronique
EP04104410A Division EP1501276A3 (fr) 2002-02-26 2003-02-22 Procédé d'analyse pour un capteur d'image électronique

Publications (1)

Publication Number Publication Date
EP1479217A1 true EP1479217A1 (fr) 2004-11-24

Family

ID=7713954

Family Applications (3)

Application Number Title Priority Date Filing Date
EP04104411A Withdrawn EP1503569A3 (fr) 2002-02-26 2003-02-22 Procédé d'analyse pour une capteur d'image électronique
EP03720128A Ceased EP1479217A1 (fr) 2002-02-26 2003-02-22 Capteur d'image electronique et procede d'analyse
EP04104410A Ceased EP1501276A3 (fr) 2002-02-26 2003-02-22 Procédé d'analyse pour un capteur d'image électronique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04104411A Withdrawn EP1503569A3 (fr) 2002-02-26 2003-02-22 Procédé d'analyse pour une capteur d'image électronique

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP04104410A Ceased EP1501276A3 (fr) 2002-02-26 2003-02-22 Procédé d'analyse pour un capteur d'image électronique

Country Status (8)

Country Link
US (1) US7391441B2 (fr)
EP (3) EP1503569A3 (fr)
JP (1) JP4416513B2 (fr)
CN (1) CN100338935C (fr)
AU (1) AU2003223835A1 (fr)
DE (1) DE10208289C1 (fr)
RU (1) RU2305912C2 (fr)
WO (1) WO2003073745A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101170359B (zh) * 2007-12-03 2011-06-08 华东理工大学 一种能够跟踪信号移动的光通信接收装置
JP5792923B2 (ja) * 2009-04-20 2015-10-14 キヤノン株式会社 放射線撮像装置及び放射線撮像システム、それらの制御方法及びそのプログラム

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338168A1 (de) * 1982-10-21 1984-04-26 Dainippon Screen Manufacturing Co., Ltd., Kyoto Bildsignaldetektor eines bildreproduktionssystems
JPS63240261A (ja) * 1987-03-27 1988-10-05 Matsushita Electric Ind Co Ltd 画像読み取り装置
DE4024618A1 (de) * 1990-07-31 1992-02-06 Siemens Ag Geraet zur abbildung von oberflaechenbildinformationen
JP2002051261A (ja) * 2000-08-01 2002-02-15 Matsushita Electric Ind Co Ltd 画像読み取り装置および画像読み取り方法

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US4009388A (en) * 1975-10-30 1977-02-22 Xerox Corporation Arrangement for extending photosensor array resolution
JPS56146355A (en) * 1980-04-15 1981-11-13 Canon Inc Optical system of original reader
US4551760A (en) 1983-09-16 1985-11-05 Rca Corporation Television camera with solid-state imagers cooled by a thermal servo
DE3537220A1 (de) * 1985-10-16 1987-04-16 Joerg Prof Dr Ing Albertz Optoelektronische kamera
JP2509624B2 (ja) 1987-06-19 1996-06-26 富士写真フイルム株式会社 カラ−スライドのプリント方法
US5262871A (en) * 1989-11-13 1993-11-16 Rutgers, The State University Multiple resolution image sensor
US6205259B1 (en) 1992-04-09 2001-03-20 Olympus Optical Co., Ltd. Image processing apparatus
DE69318885T2 (de) 1992-05-04 1999-01-21 Agfa Gevaert Nv Automatische Verschiebung und Verstärkungssteuerung für einen Dokumentenabtaster
JPH09261469A (ja) 1996-01-19 1997-10-03 Canon Inc 画像処理装置及び画像処理方法
US6095566A (en) * 1996-03-14 2000-08-01 Kabushiki Kaisha Toshiba Image recorded product, image recording system, image reproducing system, and recording medium for use to superimpose-record/reproduce additional information
US6278533B1 (en) 1996-11-29 2001-08-21 Fuji Photo Film Co., Ltd. Method of processing image signal
US7133078B2 (en) * 1997-05-21 2006-11-07 Olympus Optical Co., Ltd. Automatic focal point sensing device
DE69835638T2 (de) 1997-07-09 2006-12-28 Canon K.K. Farbbildverarbeitungsgerät und -verfahren
JP3369088B2 (ja) * 1997-11-21 2003-01-20 富士通株式会社 紙葉鑑別装置
DE19817824A1 (de) * 1998-04-21 1999-10-28 Focke & Co Vorrichtung zum Prüfen von Einheiten aus mehreren Einzelgegenständen, Materiallagen oder dergleichen
IL125929A (en) * 1998-08-25 2002-03-10 Orbotech Ltd Method and apparatus for inspection of printed circuit boards
SE514859C2 (sv) * 1999-01-18 2001-05-07 Mydata Automation Ab Förfarande och anordning för undersökning av objekt på ett substrat genom att ta bilder av substratet och analysera dessa
JP2000244936A (ja) 1999-02-10 2000-09-08 Texas Instr Inc <Ti> ディジタルスチルカメラの動作方法
EP1128655B1 (fr) * 2000-02-21 2006-12-06 Hewlett-Packard Company, A Delaware Corporation Cadre d'assistance pour appareils capteurs de documents
JP4263416B2 (ja) * 2001-08-24 2009-05-13 株式会社日立製作所 荷電粒子顕微鏡評価システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338168A1 (de) * 1982-10-21 1984-04-26 Dainippon Screen Manufacturing Co., Ltd., Kyoto Bildsignaldetektor eines bildreproduktionssystems
JPS63240261A (ja) * 1987-03-27 1988-10-05 Matsushita Electric Ind Co Ltd 画像読み取り装置
DE4024618A1 (de) * 1990-07-31 1992-02-06 Siemens Ag Geraet zur abbildung von oberflaechenbildinformationen
JP2002051261A (ja) * 2000-08-01 2002-02-15 Matsushita Electric Ind Co Ltd 画像読み取り装置および画像読み取り方法

Non-Patent Citations (1)

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Title
See also references of WO03073745A1 *

Also Published As

Publication number Publication date
EP1501276A2 (fr) 2005-01-26
JP2006501635A (ja) 2006-01-12
RU2004124528A (ru) 2006-01-27
AU2003223835A1 (en) 2003-09-09
EP1503569A2 (fr) 2005-02-02
DE10208289C1 (de) 2003-02-27
CN1640112A (zh) 2005-07-13
EP1503569A3 (fr) 2005-08-17
EP1501276A3 (fr) 2005-08-17
RU2305912C2 (ru) 2007-09-10
CN100338935C (zh) 2007-09-19
JP4416513B2 (ja) 2010-02-17
WO2003073745B1 (fr) 2004-03-04
WO2003073745A1 (fr) 2003-09-04
US20050157185A1 (en) 2005-07-21
US7391441B2 (en) 2008-06-24

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