WO2004088599A1 - 紙葉類識別装置および方法 - Google Patents
紙葉類識別装置および方法 Download PDFInfo
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- WO2004088599A1 WO2004088599A1 PCT/JP2004/004714 JP2004004714W WO2004088599A1 WO 2004088599 A1 WO2004088599 A1 WO 2004088599A1 JP 2004004714 W JP2004004714 W JP 2004004714W WO 2004088599 A1 WO2004088599 A1 WO 2004088599A1
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- paper sheet
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000003384 imaging method Methods 0.000 claims description 82
- 230000005856 abnormality Effects 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims 3
- 239000000428 dust Substances 0.000 abstract description 50
- 238000001514 detection method Methods 0.000 abstract description 12
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 239000010813 municipal solid waste Substances 0.000 description 61
- 238000010586 diagram Methods 0.000 description 21
- 238000012545 processing Methods 0.000 description 13
- 230000032258 transport Effects 0.000 description 12
- 239000002699 waste material Substances 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
Classifications
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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
- H04N1/00026—Methods therefor
- H04N1/00031—Testing, i.e. determining the result of a trial
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
-
- 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
- H04N1/00053—Methods therefor out of service, i.e. outside of normal operation
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
- G07D11/20—Controlling or monitoring the operation of devices; Data handling
- G07D11/22—Means for sensing or detection
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
- G07D11/20—Controlling or monitoring the operation of devices; Data handling
- G07D11/22—Means for sensing or detection
- G07D11/235—Means for sensing or detection for monitoring or indicating operating conditions; for detecting malfunctions
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/004—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/20—Testing patterns thereon
-
- 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
- H04N1/00063—Methods therefor using at least a part of the apparatus itself, e.g. self-testing
-
- 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
- H04N1/00071—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for characterised by the action taken
- H04N1/00074—Indicating or reporting
-
- 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
- H04N1/409—Edge or detail enhancement; Noise or error suppression
- H04N1/4097—Removing errors due external factors, e.g. dust, scratches
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D2211/00—Paper-money handling devices
Definitions
- the present invention relates to a paper sheet identification apparatus and method, and more particularly, to a paper sheet identification apparatus and method for extracting the characteristics of a paper sheet from an image to identify the type and authenticity of the paper sheet.
- paper sheets such as banknotes, checks, gift certificates, etc. are identified magnetically or optically by using a magnetic sensor or optical sensor to extract the characteristics of the paper sheets entered by the user. It is done by doing.
- the extraction of optical characteristics of paper sheets by optical sensors is performed by extracting the design, dimensions, direction, etc. of paper sheets using a transmission type optical sensor or reflection type optical sensor, and acquiring those image patterns. By comparing the obtained image pattern with the standard pattern of genuine bills for each type, the type and authenticity of the inserted sheets are identified.
- a watermark of a banknote is used.
- a medium image is read by a CCD sensor using transmitted light, and a pattern of a watermark area of the medium is extracted from the read image.
- a media authenticity discriminating apparatus that performs the authenticity discrimination by removing the influence of the extracted non-linear blur of the data.
- the present invention prevents misidentification caused by dust adhering in the image pickup unit, and prevents abnormal use in the image pickup unit by detecting an abnormality in the image pickup unit due to dust adhering to the outside. It is an object of the present invention to provide a paper sheet identification device and a method which enable the following.
- the invention according to claim 1 is a paper sheet identification device that captures an image of a paper sheet with an imaging unit and identifies the paper sheet based on the captured image.
- a first image obtaining means for obtaining a first captured image in a state where the paper sheet is not present in the unit, and a second image obtaining means for obtaining a second captured image in a state where the paper sheet is present in the image pickup unit.
- An image acquisition unit based on the first captured image acquired by the first image acquisition unit and the second captured image acquired by the second image acquisition unit, to remove unnecessary images in the second captured image.
- Unnecessary image discriminating means for discriminating; and paper sheet discriminating means for discriminating the paper sheets based on the second captured image acquired by the second image acquiring means and the unnecessary image discriminated by the unnecessary image discriminating means. And characterized in that:
- the unnecessary image is an image indicating dust attached to the inside of the imaging unit.
- the invention according to claim 2 is the invention according to claim 1, wherein the imaging unit is configured to irradiate the paper sheet, a conveyance path for conveying the paper sheet, and a paper sheet on the conveyance path. And imaging means for imaging the transmitted light.
- the unnecessary image determining means is configured to measure a position and an area of an image in the first captured image acquired by the first image acquiring means. Means for determining an image existing in the second captured image acquired by the second image acquisition means at the same position and the same area as the image measured by the measurement means, as an unnecessary image. I do.
- the paper sheet identifying means is a standard data sheet in which the unnecessary image determined by the unnecessary image determining means is obtained in advance from true paper sheets. Standard data with the same image and the same area
- the paper sheet is identified by comparing the evening with the image data corresponding to the second captured image acquired by the second image acquiring means.
- the invention according to claim 5 is the invention according to claim 1, further comprising abnormality notification means for notifying an abnormality when the unnecessary image determined by the unnecessary image determination means exceeds a predetermined value set in advance.
- the invention according to claim 6 is a paper sheet identification method in which an image of a paper sheet is picked up by an image pickup unit and the sheet is identified based on the picked-up image. Acquiring a first captured image in a state where there is no class, and acquiring a second captured image in a state where the paper sheet is present in the imaging unit; and acquiring the first captured image and the second captured image. And determining the unnecessary image in the second captured image, and identifying the paper sheet based on the determined unnecessary image and the second captured image. Further, according to the invention of claim 7, in the invention of claim 6, the imaging section irradiates the paper with light and captures transmitted light of the paper on a transport path for transporting the paper. Imaged.
- the invention of claim 8 is the invention of claim 6, wherein the position and area of the image in the first captured image are measured, and the second image is captured at the same position and the same area as the measured image. It is characterized in that an image present in the image is determined as an unnecessary image.
- the unnecessary image is pasted at the same position and the same area with respect to standard data previously obtained from true paper sheets, and the unnecessary image is pasted.
- the paper sheet is identified by comparing the obtained standard data with the image data corresponding to the second captured image.
- the present invention it is possible to prevent erroneous identification caused by adhesion of dust by imaging the inside of an imaging unit before imaging paper sheets and accurately identifying dust attached to the imaging unit.
- FIG. 1 is a block diagram showing an example of a functional configuration of the paper sheet identification device according to the present invention.
- FIG. 2 is a block diagram illustrating an example of a functional configuration of the imaging unit, the dust detection unit, and the identification unit.
- FIG. 3 is a flowchart illustrating a processing procedure performed by the paper sheet identification device when identifying the type and authenticity of the inserted paper sheet.
- FIG. 4 is a diagram illustrating an example of a detailed configuration of the imaging unit.
- FIG. 5 is a diagram showing an example of image data without paper sheets and an image with paper sheets acquired by the imaging unit shown in FIG.
- FIG. 6 is a diagram illustrating an example of a detailed configuration of the imaging unit when dust is attached to the imaging unit.
- FIG. 7 is a diagram illustrating an example of image data without a sheet and image data with a sheet acquired by the imaging unit illustrated in FIG.
- FIG. 8 shows the binarized image data without paper sheets and the image data with paper sheets obtained by binarizing the image data without paper sheets and the image data with paper sheets shown in Fig. 7.
- FIG. 3 is a diagram showing an example of a binarized image data.
- FIG. 9 is a diagram illustrating an example of a process of pasting a dust image existing in the binarized image without paper sheets shown in FIG. 8 in the standard data overnight.
- FIG. 1 is a block diagram showing an example of a functional configuration of a paper sheet identification device 1 according to the present invention.
- the paper sheet identification device 1 controls the entire paper sheet identification device 1, a control unit 2, a paper sheet input unit 3 which is an entrance of the paper sheet, and transports the paper sheet.
- Paper transport Unit 4 a sheet receiving unit 5 for receiving sheets, a driving unit 6 for driving the sheet conveying unit 4 under the control of the control unit 2, and a sheet conveyed by the sheet conveying unit 4.
- the imaging unit 7, which captures image data of paper sheets and obtains the image data acquired by the imaging unit 7, the dust detection unit 8, which detects dust attached to the imaging unit 7, and the imaging unit ⁇ , which detects dust attached to the imaging unit 7. It comprises an identification unit 9 for identifying the type and authenticity of a sheet based on the obtained image data.
- the control unit 2 controls the driving unit 6 to convey the sheet by the sheet conveyance unit 4.
- the image capturing section 7 captures an image of the inside of the image capturing section ⁇ before the paper sheet is conveyed to the image capturing section 7 to obtain image data without paper sheets, and thereafter, the paper sheet is transferred to the image capturing section 7.
- the imaging unit 7 takes an image of the paper sheet and acquires image data with the paper sheet, and obtains the image data without the paper sheet and the image data with the paper sheet.
- the identification unit 9 receives the image data without the paper sheet and the image data with the paper sheet
- the identification unit 9 receives the image data without the paper sheet and the image data with the paper sheet.
- the garbage detection unit 8 Is sent to the garbage detection unit 8, and when the garbage detection unit 8 receives the image data without paper sheets and the image data with paper sheets, the garbage detection unit 8 outputs the image data without paper sheets and the paper sheets. Based on the image data, dust adhering to the image pickup unit 7 is detected. Based on the image data, the type and authenticity of the paper sheet are identified, and when the paper sheet is identified as a genuine bill, the control unit 2 controls the driving unit 6 to drive the paper sheet transport unit 4 to drive the paper sheet. The control unit 2 controls the driving unit 6 to drive the sheet conveying unit 4 when the sheet is conveyed to the sheet receiving unit 5, receives the sheet, and is identified as a counterfeit note. Transport the paper to the paper input section 3 and return the paper.
- a notification of the abnormality of the imaging unit 7 is sent to the control unit 2, and when the control unit 2 receives the notification of the abnormality, the sheet identification device 1 is incorporated.
- the abnormality of the imaging unit 7 is notified to the control unit of the main unit (for example, a vending machine, a money changing machine, etc.). If the garbage detected by the garbage detecting unit 8 is out of the specified range, a configuration in which the identifying unit 9 identifies paper sheets may be applied, or the identifying unit 9 may identify the paper sheets. A configuration in which paper sheets are returned without performing another operation may be applied.
- FIG. 2 is a block diagram illustrating an example of a functional configuration of the imaging unit 7, the dust detection unit 8, and the identification unit 9.
- the imaging unit 7 is formed by a light emitting element 10 and a light receiving element 11, and the identification unit 9 includes a memory 12, an image processing unit 13, a template 14, and a true / false judgment unit 1.
- the garbage detector 8 is composed of a garbage discriminator 16 and a comparator 17 o
- the light emitting element 10 irradiates light to the sheet and the light receiving element 11 receives light transmitted through the sheet
- the light-emitting element 10 is arranged at a predetermined position passing through the imaging area of the paper sheet to be identified so as to sandwich the paper sheet transport unit 4 and when acquiring image data with the paper sheet.
- the image pickup area of the sheet conveyed by the sheet conveying section 4 is irradiated with light, the light receiving element 11 receives the transmitted light transmitted through the image pickup area of the sheet, and the amount of the transmitted light received.
- the light emitted by the light emitting element 10 is received by the light receiving element 11 and the electric signal is output according to the amount of light received.
- C The light emitting element 10 irradiates the sheet with light, and the light receiving element 11 receives the reflected light reflected by the sheet.
- the light emitting element 10 is disposed at a predetermined position passing through the imaging area of the sheet to be identified, and the light receiving element 11 is located at a position where the light reflected by the sheet can be received.
- a reflection plate or the like that reflects the light of the light emitting element 10 is arranged.
- the element 10 irradiates light to the imaging area of the paper sheet transported by the paper sheet transport unit 4, and the light receiving element 11 receives the reflected light reflected from the imaging area of the paper sheet and receives the light.
- the light-emitting element 10 emits light and the light-receiving element 11 reflects a reflector, etc.
- the reflected light is received and an electric signal is output according to the amount of the received reflected light.
- any of infrared, ultraviolet, and visible light can be applied to the imaging unit 7.
- the memory 12 sequentially stores the signal levels of the electric signals output from the imaging unit 7 at predetermined time intervals in a predetermined storage area and assigns consecutive addresses, and The image is temporarily stored and held as the image data of the kind of imaging area.
- the image processing unit 13 reads out the image data without paper sheets and the image data with paper sheets stored in the memory 12 and reads the read image without paper sheets. Binarized image data with paper sheets and other data, and binarized image data without paper sheets. At the same time, the binarized image data with a sheet is sent to the authenticity judgment unit 15.
- the garbage discriminating unit 16 detects and detects an image indicating garbage (garbage adhering in the imaging unit) of the binarized image data without paper sheets received from the image processing unit 13.
- the position and area of the garbage image are measured, and the measured position and area of the garbage image are checked against the binarized image data with paper sheets received from the image processing unit 13 to If there is an image having the same position and the same area as the image showing the dust in the binarized image with the type of paper, the image is attached to the image pickup unit 7 in the image with the paper sheet.
- the comparison unit 17 compares the total area of the waste received from the waste identification unit 16 with a predetermined value. If the total area of the waste is out of the specified range, the abnormality of the imaging unit 7 is determined. The notification is sent to the control unit 2. If the total area of the garbage is out of the specified range, a notification that the identification of the paper sheets is not permitted is sent to the authenticity determination section 15 of the identification section 9. A configuration may be applied in which a notification for permitting identification of a paper sheet is sent to the false determination unit 15.
- the template 14 stores standard data previously obtained from genuine bills.
- the authenticity determination unit 15 pastes an image indicating the garbage into the standard data read from the template 14 based on the position and area of the image indicating the garbage received from the garbage identification unit 16 and removes the garbage. By comparing the standard data on which the image shown is pasted with the image data with the sheet received from the image processing unit 13, the type and authenticity of the sheet are determined, and the determination result is determined by the control unit 2. To send to. Next, the functional operations performed by the imaging unit 7, the garbage detection unit 8, and the identification unit 9 when identifying the type and authenticity of the inserted paper sheet will be described.
- the paper sheet inserted from the paper sheet insertion unit 3 is transported by the paper sheet transport unit 4, and the light emitting element 10 emits light before the paper sheet reaches the imaging unit 7, and the light receiving element 1 i Receives the light, or receives the reflected light reflected by the reflection plate, etc., outputs an electric signal to the memory 12 according to the amount of the received light, and when the memory 12 receives the electric signal,
- the signal level of the input electric signal is temporarily stored and held as image data without a sheet, and when the sheet reaches the imaging unit 7, the light emitting element 10 irradiates light to the imaging area of the sheet.
- the light receiving element 11 receives light transmitted or reflected by the imaging area of the sheet, outputs an electric signal to the memory 12 according to the amount of received light, and the memory 12 inputs the electric signal.
- the signal level of the input electric signal is temporarily stored and stored as an image with paper sheets.
- the image processing unit 13 reads out the image data without the paper sheet and the image data with the paper sheet stored in the memory 12 and reads the read image data without the paper sheet and the image data with the paper sheet.
- the image data is binarized, and the binarized image data without paper sheets and the binarized image data with paper sheets are sent to the garbage identification unit 16 of the garbage detection unit 8. Then, the binarized image data with the paper sheet is sent to the authenticity judgment unit 15.
- the garbage discriminating unit 16 When receiving the binarized image data without papers and the binarized image data with papers, the garbage discriminating unit 16 receives the binarized image data without papers ( Detects the position and area of the image that indicates garbage adhering to the imaging unit), measures the position and area of the detected garbage image, and calculates the binary value of the measured garbage image position and area with paper sheets.
- the binarized image data with paper sheets has an image with the same position and the same area as the image indicating dust in the binarized image data with paper sheets
- the image is captured using the image data with paper sheets Identify the image indicating the dust attached to the part 7 and calculate the total area of the image indicating the identified waste, send the calculated total area to the comparison part 17 and, at the same time, image data without paper sheets
- the position and area of the image showing the garbage are identified.
- the comparing section 17 compares the total area of the received waste with a predetermined value. If the total area of the waste is out of the specified range, the imaging section 7 is abnormal. Is sent to the control unit 2.
- the authenticity judgment unit 1 5 Reads the standard data from the template 14, pastes an image showing the garbage into the standard data based on the position and area of the image showing the garbage, standard data with the image showing the garbage attached, and image processing The type and authenticity of the paper sheet are determined by comparing the binarized image data with the paper sheet received from the unit 13 with the image data, and the determination result is transmitted to the control unit 2.
- the sheet identification apparatus captures an image of the inside of the image pickup unit using the light emitting element and the light receiving element (step S302), and When the image reaches the imaging unit (YES in step S303), the light-emitting element and the light-receiving element image the paper sheet (step S304), and the image data without the paper sheet obtained by imaging the inside of the imaging unit. From the evening, an image indicating garbage is detected (Step S305), the position and area of the image indicating the detected garbage are measured (Step S306), and the position and area of the image indicating the measured garbage are determined using paper sheets.
- the image data is collated (step S307), and an image indicating dust attached to the image pickup unit in an image with paper sheets is identified (step S308), and attached to the image pickup unit. If the total area of the image showing garbage is out of the specified range (step In step S309, N0), the abnormality of the imaging unit is notified (step S310), the sheet is identified (step S311), and the processing procedure ends.
- step S309 if the total area of the image showing the dust adhering to the inside of the imaging unit is within the specified range (YES in step S309), the sheet is identified (step S311). End the procedure.
- step S309 if the total area of the image indicating dust attached to the image pickup unit is out of the specified range, an abnormality in the image pickup unit is notified, and a processing procedure in which paper sheets are not identified can be applied. It is.
- FIG. 4 is a diagram illustrating an example of a detailed configuration of the imaging unit 7.
- the light-emitting element 10 and the light-receiving element 11 are arranged at predetermined positions passing through the watermark area of the sheet 18 to be identified so as to sandwich the sheet transport section 4.
- the paper sheet transport section 4 in the imaging section 7 is composed of a transparent protective plate 19 and the like.
- the paper sheet detection sensor 20 installed between the paper sheet insertion unit 3 and the imaging unit 7 detects the paper sheet 18 being conveyed by the paper sheet conveyance unit 4
- the light emitting element 10 irradiates light
- the light receiving element 11 receives the light to acquire image data without paper sheets.
- the light emitting element 10 irradiates the watermark area of the paper sheet 18 with light
- the light receiving element 11 receives the transmitted light transmitted through the watermark area of the sheet 18 to acquire image data with the sheet.
- FIG. 5 is a diagram showing an example of image data 21 without paper sheets and image data 22 with paper sheets acquired by the imaging unit 7 shown in FIG.
- FIG. 5A is a diagram illustrating an example of an image 21 without paper sheets.
- FIG. 5B is a diagram illustrating an example of image data 22 with a sheet.
- the image area 22 with the sheet has the watermark area 23 and the watermark area.
- a normal area 24 other than 23 exists, and a watermark pattern 25 exists in the watermark area 23.
- the amount of light transmitted through the watermark region 23 is large, the amount of light transmitted through the watermark pattern 25 is smaller than the amount of light in the watermark region 23, and the amount of light transmitted through the normal region 24 is smaller than the light amount of the watermark pattern 23. .
- FIG. 6 shows an example of the detailed configuration of the imaging unit 7 when dust is attached to the imaging unit 7.
- the light emitting element 10 and the light receiving element 11 are arranged at predetermined positions passing through the watermark area 23 of the sheet 18 to be identified so as to sandwich the sheet transport section 4.
- the paper sheet transport section 4 in the image pickup section 7 is constituted by a transparent protective plate 19 and the like.
- dust A 2 61 and dust C 2 63 adhere to the protection plate 19 etc. on the light emitting element 10 side, and dust B 2 62 and dust get on the protection plate 19 etc. on the light receiving element 11 side.
- D 2 6 4 adheres ⁇
- the sheet detecting sensor 20 installed between the sheet input unit 3 and the imaging unit 7 detects the sheet 18 inserted into the sheet conveying unit 4, the light emitting element 1 0 illuminates light, and the light receiving element 11 receives the light to acquire image data without paper sheets. Then, when the arrival of the watermark area 23 of the paper sheet 18 to the imaging unit 7 is recognized based on the pulse or the like of the driving unit 6, the light emitting element 10 moves to the watermark area 23 of the paper sheet 18. Light is irradiated, and the light receiving element 11 receives the transmitted light transmitted through the watermark area 23 of the sheet 18 to obtain an image with the sheet.
- FIG. 7 is a diagram showing an example of the image data 27 without paper sheets and the image data 28 with paper sheets acquired by the imaging unit 7 shown in FIG.
- FIG. 7A is a diagram illustrating an example of an image 27 without paper sheets.
- FIG. 7B is a diagram showing an example of image data 28 with a sheet.
- the image area 28 with a paper sheet has a watermark area 23 and a normal area 24 other than the watermark area 23, and the watermark area 23 has a watermark area.
- a pattern 25 exists, and a refuse image A 291, a refuse image B 292, and a refuse image D 294 exist.
- the dust C 2 63 adheres to the protective plate 19 on the light emitting element 10 side and adheres to a position blocking the normal area 24 where the amount of transmitted light is small, the dust image C 2 9 3 does not exist in the image data 28 with paper sheets.
- FIG. 8 shows the binarized image data 30 without paper sheets obtained by binarizing the image data 27 without paper sheets shown in Fig. 7 and the image data 28 with paper sheets.
- FIG. 3 is a diagram showing an example of coded image data 31.
- FIG. 8 (a) is a diagram showing an example of a binarized image data 30 without paper sheets obtained by binarizing the image data 27 without paper sheets shown in FIG.
- the image data 27 without papers shown in Fig. 7 is binarized to generate a garbage image A291, a garbage image B292, and a garbage image C29. 3 and the dust image D 2 94 become black pixels.
- FIG. 8B is a diagram showing an example of the binarized image data 31 with paper sheets obtained by binarizing the image data 28 with paper sheets shown in FIG. As shown in FIG. 8 (b), by binarizing the image data 28 with the paper sheet shown in FIG.
- the watermark region 23 has white pixels
- the watermark pattern 25 and the normal region 24 have Along with the black pixels
- the trash image A291 and the trash image B292 become black pixels.
- the garbage image D 294 also becomes a black pixel due to the binarization, but since the garbage D 264 is positioned so as to block the normal area 24, the garbage image D 294 is the normal area 24. And assimilate and cannot be identified.
- the binarized image data 30 without paper sheets is compared with the binarized image data 31 with paper sheets, the binarized image data 30 without paper sheets exists.
- Garbage image A 291 and garbage image B 292 are at the same position as garbage image A 291 and garbage image B 292 in the binarized image data 31 with paper sheets And the same area, and the garbage image A 291 and the garbage image B 292 existing in the binarized image data 31 with paper sheets are attached to the imaging unit 7. It can be identified as garbage 'A2661 and garbage B2662.
- the total and area of the refuse image A291 and the refuse image B292 are calculated, and if the calculated total area is larger than a predetermined value, an abnormality of the imaging unit 7 is notified.
- the configuration for acquiring the image data of the watermark area 23 only the dust attached to the position blocking the watermark area 23 of the sheet 18 can be identified. It is possible to calculate only the total area of the refuse adhering to the position that blocks 3 and compare it with the specified value.For example, even if a lot of refuse adheres in the imaging unit 7, If the number of pieces of paper 18 attached to the position blocking the normal area 24 is large and the number of pieces attached to the position blocking the watermark area 23 is small, it is not necessary to notify an abnormality of the imaging unit.
- FIG. 9 is a diagram for explaining an example of a process of pasting a garbage image existing in the binarized image data 30 without paper sheets shown in FIG.
- the standard data 32 obtained in advance from the genuine paper sheets shows the garbage image A 291, which exists in the binarized image data 30 without paper sheets shown in Fig. 8.
- a garbage image B 292, a garbage image C 293, and a garbage image D 294 are pasted at the same position and in the same area, and a standard image 33 with the trash image pasted is generated.
- the process of pasting the garbage image existing in the binarized image data 30 without paper sheets onto the standard data 32 at the same position and the same area is performed by binarization with paper sheets.
- the image processing is easier and the influence of the dust image on the identification of the paper sheet 18 can be reduced.
- the configuration has been described in which image data without a sheet is acquired each time a sheet is inserted and dust attached to the imaging unit is detected.
- the present invention is also applicable to a configuration in which dust adhering to the inside of the unit 7 is detected for a predetermined period.
- the present invention is applicable to a paper sheet identification device that captures an image of a paper sheet such as a bill by an imaging unit and identifies the paper sheet based on the captured image.
- Advantageous Effects of Invention According to the present invention, it is possible to prevent erroneous identification caused by adhesion of dust by imaging the inside of the imaging unit before imaging paper sheets and accurately identifying dust attached to the imaging unit. As soon as it becomes possible, an abnormality in the imaging unit is detected and notified Can be prevented from being used.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Toxicology (AREA)
- Computer Security & Cryptography (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Image Processing (AREA)
- Image Analysis (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/551,583 US7574033B2 (en) | 2003-03-31 | 2004-03-31 | Sheet paper identification device and method |
CA002520489A CA2520489A1 (en) | 2003-03-31 | 2004-03-31 | Sheet paper identification device and method |
DE112004000570T DE112004000570T5 (de) | 2003-03-31 | 2004-03-31 | Vorrichtung und Verfahren zum Identifizieren von Papierscheinen |
GB0521291A GB2418247B (en) | 2003-03-31 | 2004-03-31 | Sheet paper identification device and method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-094763 | 2003-03-31 | ||
JP2003094763A JP4222546B2 (ja) | 2003-03-31 | 2003-03-31 | 紙葉類識別装置および方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004088599A1 true WO2004088599A1 (ja) | 2004-10-14 |
Family
ID=33127405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/004714 WO2004088599A1 (ja) | 2003-03-31 | 2004-03-31 | 紙葉類識別装置および方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7574033B2 (ja) |
JP (1) | JP4222546B2 (ja) |
KR (1) | KR100704851B1 (ja) |
CN (1) | CN1768356A (ja) |
CA (1) | CA2520489A1 (ja) |
DE (1) | DE112004000570T5 (ja) |
GB (1) | GB2418247B (ja) |
WO (1) | WO2004088599A1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1950856B (zh) * | 2004-03-08 | 2012-02-15 | 科学和工业研究理事会 | 使用积分透射和反射光谱响应的改进的验钞机 |
JP2006194858A (ja) * | 2004-12-17 | 2006-07-27 | Micronics Japan Co Ltd | 表示用パネルの検査装置 |
US7516949B2 (en) * | 2005-08-10 | 2009-04-14 | First Data Corporation | Sideways sheet feeder and methods |
DE102007037923A1 (de) * | 2007-08-10 | 2009-02-12 | Giesecke & Devrient Gmbh | Optischer Sensor zur Erfassung von Wertdokumenten und Verfahren zur Reinhaltung eines Sensorfensters des Sensors |
KR100881230B1 (ko) * | 2008-08-27 | 2009-02-09 | 주식회사 상상돔 | 스테레오 영상을 이용한 고 정밀 위폐 감별 시스템 |
US9167219B2 (en) | 2010-11-16 | 2015-10-20 | Thomson Licensing | Method and apparatus for automatic film restoration |
JP5781554B2 (ja) * | 2013-02-07 | 2015-09-24 | 東芝テック株式会社 | 情報処理装置及びプログラム |
CN103440701B (zh) * | 2013-09-11 | 2015-09-23 | 广州广电运通金融电子股份有限公司 | 一种钞票的磁信号检测方法及装置 |
US9222531B2 (en) * | 2014-02-20 | 2015-12-29 | GM Global Technology Operations LLC | Vehicle transmission with tie-up monitoring logic |
CN104200566B (zh) * | 2014-09-11 | 2018-04-20 | 广州广电运通金融电子股份有限公司 | 一种基于清分机积灰条件下的钞票识别方法及清分机 |
CN104331980A (zh) * | 2014-11-04 | 2015-02-04 | 广州御银自动柜员机技术有限公司 | 凭证扫描回收装置及其回收方法 |
JP2016099986A (ja) * | 2014-11-26 | 2016-05-30 | 富士通フロンテック株式会社 | 媒体処理装置、媒体処理方法および媒体処理プログラム |
CN111930084B (zh) * | 2020-08-04 | 2022-09-23 | 广东理文造纸有限公司 | 基于纸面尘埃检测的无尘纸生产控制系统及方法 |
CN114460075B (zh) * | 2021-12-30 | 2023-12-19 | 南京华鼎纳米技术研究院有限公司 | 一种基于图像识别的纸张修补方法 |
Citations (4)
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JPH01250050A (ja) * | 1988-03-30 | 1989-10-05 | Toshiba Corp | 光学系の付着ごみ等検出装置 |
JPH11102456A (ja) * | 1997-09-29 | 1999-04-13 | Hitachi Ltd | 紙幣取引装置 |
JP2002092683A (ja) * | 2000-07-14 | 2002-03-29 | Oki Electric Ind Co Ltd | 媒体真偽鑑別装置 |
JP2002183722A (ja) * | 2000-12-12 | 2002-06-28 | Nippon Conlux Co Ltd | 貨幣識別方法及び装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0792853B2 (ja) * | 1989-06-19 | 1995-10-09 | 株式会社日本コンラックス | 紙葉類識別装置及び方法 |
US5214470A (en) * | 1992-04-09 | 1993-05-25 | Xerox Corporation | Method and apparatus for compensating for dirt or etched areas on a document platen |
JPH06203244A (ja) | 1992-12-25 | 1994-07-22 | Toyo Commun Equip Co Ltd | 紙幣等の真贋識別装置 |
DE19517194A1 (de) | 1995-05-11 | 1996-11-14 | Giesecke & Devrient Gmbh | Vorrichtung und Verfahren zur Prüfung von Blattgut, wie z.B. Banknoten oder Wertpapiere |
-
2003
- 2003-03-31 JP JP2003094763A patent/JP4222546B2/ja not_active Expired - Fee Related
-
2004
- 2004-03-31 US US10/551,583 patent/US7574033B2/en not_active Expired - Fee Related
- 2004-03-31 DE DE112004000570T patent/DE112004000570T5/de not_active Ceased
- 2004-03-31 KR KR1020057018060A patent/KR100704851B1/ko not_active IP Right Cessation
- 2004-03-31 GB GB0521291A patent/GB2418247B/en not_active Expired - Fee Related
- 2004-03-31 WO PCT/JP2004/004714 patent/WO2004088599A1/ja active IP Right Grant
- 2004-03-31 CN CNA2004800086469A patent/CN1768356A/zh active Pending
- 2004-03-31 CA CA002520489A patent/CA2520489A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01250050A (ja) * | 1988-03-30 | 1989-10-05 | Toshiba Corp | 光学系の付着ごみ等検出装置 |
JPH11102456A (ja) * | 1997-09-29 | 1999-04-13 | Hitachi Ltd | 紙幣取引装置 |
JP2002092683A (ja) * | 2000-07-14 | 2002-03-29 | Oki Electric Ind Co Ltd | 媒体真偽鑑別装置 |
JP2002183722A (ja) * | 2000-12-12 | 2002-06-28 | Nippon Conlux Co Ltd | 貨幣識別方法及び装置 |
Also Published As
Publication number | Publication date |
---|---|
CA2520489A1 (en) | 2004-10-14 |
JP2004302836A (ja) | 2004-10-28 |
CN1768356A (zh) | 2006-05-03 |
JP4222546B2 (ja) | 2009-02-12 |
GB2418247A (en) | 2006-03-22 |
GB2418247B (en) | 2006-10-11 |
GB0521291D0 (en) | 2005-11-30 |
US20060233432A1 (en) | 2006-10-19 |
US7574033B2 (en) | 2009-08-11 |
KR20050118209A (ko) | 2005-12-15 |
KR100704851B1 (ko) | 2007-04-09 |
DE112004000570T5 (de) | 2006-04-13 |
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