WO2014075452A1 - 纸币号码识别装置和识别方法 - Google Patents
纸币号码识别装置和识别方法 Download PDFInfo
- Publication number
- WO2014075452A1 WO2014075452A1 PCT/CN2013/078911 CN2013078911W WO2014075452A1 WO 2014075452 A1 WO2014075452 A1 WO 2014075452A1 CN 2013078911 W CN2013078911 W CN 2013078911W WO 2014075452 A1 WO2014075452 A1 WO 2014075452A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- banknote
- image data
- image
- light
- light source
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 239000000872 buffer Substances 0.000 claims description 19
- 230000000630 rising effect Effects 0.000 claims description 14
- 238000004422 calculation algorithm Methods 0.000 claims description 13
- 238000005286 illumination Methods 0.000 claims description 10
- 238000003384 imaging method Methods 0.000 claims description 9
- 238000003708 edge detection Methods 0.000 claims description 5
- 238000003909 pattern recognition Methods 0.000 claims description 3
- 238000012567 pattern recognition method Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000009351 contact transmission Effects 0.000 claims 1
- 210000002569 neuron Anatomy 0.000 claims 1
- 238000013528 artificial neural network Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- G07D7/004—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
- G07D7/0047—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 using checkcodes, e.g. coded numbers derived from serial number and denomination
-
- 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
- G07D7/121—Apparatus characterised by sensor details
Definitions
- the present application relates to the field of financial self-service devices, and more particularly to a banknote number identification device and a recognition method. Background technique
- a known banknote number identifying device acquires an image through a CIS contact image sensor or a CCD image sensor.
- the image sensor collects the banknote image at a high speed, converts it into image data through an analog-to-digital converter (AD), and the digital signal processor quickly processes the image data, locates the position of the banknote number, and realizes the operation by the recognition algorithm. Identification of banknote numbers.
- the banknote number is usually obtained by transmission imaging, and only one CIS is installed on the banknote channel, and a set of white LED light sources are installed in front of the CIS, and The fixed light time is set to illuminate the passing banknotes, and the light penetrating the banknotes is photo-imaged on the CIS, and the banknote number can be obtained regardless of whether the banknote number appears on the front side of the CIS or on the back side.
- the present application provides a new banknote number identification method and device, which can not only correctly identify the new or brand new banknote numbers, but also can The old and new cases of banknotes, the correct identification of the number of old banknotes.
- the present application provides a banknote number identification device, comprising: a touch sensor for collecting banknote image data by means of transmission imaging; a white light LED transmitting light source plate disposed directly in front of the touch sensor, the contact sensor Collecting banknote image data to provide a transmission light source; an image acquisition processing board connected to the touch sensor through a data line, the image acquisition processing board is integrated with a field editable logic gate array and a digital signal processor, the field can be Editing the logic gate array for controlling the white LED transmission light source panel to light off and driving the CIS to acquire an image, the digital signal processor is configured to process and recognize the banknote image data; and two pairs of position sensors are disposed on the banknote transport channel from the contact type The sensor is at a predetermined distance for detecting whether a banknote enters the banknote number identification device; wherein the white light LED transmission light source plate has two light source modes, and the two light source modes are alternately collected by the contact sensor Banknote image data provides a transmitted light source .
- the strong and weak light source modes control the white light through the field editable logic gate array
- the conduction time of the LED transmission light source plate is formed, the conduction time is long, the strong light mode is formed, the conduction time is short, and the low light mode is formed, and the ratio of the on-time of forming the strong light mode to the on-time of forming the low-light mode is 3:1.
- the image acquisition processing board further comprises a memory
- the memory comprises a buffer area and a register
- the buffer area is used for storing banknote image data collected by the touch sensor
- the register is used to represent the banknote in the buffer area.
- Type of image data 1 indicates strong light image data, and 0 indicates low light image data.
- the Field _ Programmable Gate Array (FPGA) is internally provided with a clock MCLK with a period of 0.125 ms and a line counter.
- the present application also provides a method for identifying a banknote number, comprising: Step 1 : acquiring a strong light image data and a low light image data of the banknote by a transmission imaging method and alternating illumination of the transmitted light source strong light mode and the weak light mode Step 2: performing edge detection on the low light image data, acquiring four edges of the image, and determining the target image; Step 3, processing the target image, identifying the version of the banknote, the face value, facing, and positioning the banknote number area; Step 4 Calling a pattern recognition algorithm for recognition, using a pattern recognition method based on an artificial neural network, comparing the gray level of the banknote image with a threshold value, and identifying the oldness of the banknote, and if it is an old banknote, using the strong light image data for identification; a new banknote, the weak light image data is selected for recognition; and in step 5, the number recognition result is output.
- step 2 the coordinates of the four vertices of the banknote image are first obtained, and the slope of the straight line where the banknote frame is located is calculated by using the least squares straight line fitting method, and then the four edges of the image are acquired.
- the specific process of obtaining a strong light image data and a low light image data of the banknote in the step 1 includes: Step 101: detecting a position sensor state; Step 102, determining whether the position sensor is triggered, and determining to be yes, then transferring Step 103, otherwise return to step 101; Step 103, start scanning, obtain banknote image data, the line counter is cleared, and then proceeds to step 104; Step 104, detecting the rising edge of MCLK; Step 105, determining whether the rising edge of MCLK is detected , if yes, go to the step 106, if no, return to step 104; in step 106, the LED switches the strong light illumination; in step 107, the FPGA drives the CIS to collect a line of image data, and then simultaneously proceeds to step 108 and step 120, step 108 and subsequent steps and step 120 And subsequent steps are processed in parallel; Step 108, detecting the rising edge of MCLK again; Step 109, determining whether the rising edge of MCLK is detected, if
- Step 114 image acquisition is completed, and the scanning ends;
- Step 120 the DSP enters the interrupt service routine;
- Step 121 detecting an image type register;
- Step 122 determining whether the image belongs to the strong light image data, if yes, proceeding to step 123, if not, proceeding to the step 124;
- step 123 the line data stored in the image buffer light;
- step 124 the low-light image data into the line buffer.
- the banknote number identification device and the identification method provided by the present application can obtain two white light transmission images of different brightness of the same banknote at a time, and can judge the old and new state of the banknote, and can effectively select one of the banknote numbers to be clearly identified. Therefore, the number of the old and new banknotes can be effectively recognized, and the accuracy of the identification of the banknote number is improved, the flow is clear, and the structure is simple.
- FIG. 1 is a schematic diagram of a hardware structure of a banknote number identification device according to a preferred embodiment of the present invention
- FIG. 2 is a flow chart of a method for identifying a banknote number according to a preferred embodiment of the present application
- Figure 3 is an exploded flow chart of step 1 of Figure 2.
- a banknote number identification device provided by a preferred embodiment of the present application includes a touch sensor 10 for collecting banknote image data by means of transmission imaging; a white LED transmitting light source plate 20 disposed on the touch sensor Directly forward, a transmission light source is provided for collecting the banknote image data of the touch sensor; an image acquisition processing board 40 is connected to the touch sensor 10 through a data line, and a field editable logic gate is integrated on the image acquisition processing board 10 Field-Programmable Gate Array (FPGA) and a digital signal processing (DSP), the field editable logic gate array is used to control the white LED transmission light source panel to light off and drive the CIS to acquire an image, the digital signal
- the processor is configured to process and recognize the banknote image data; the two pairs of position sensors 30 are disposed on the banknote transport channel at a predetermined distance from the touch sensor, and the predetermined distance is 3 cm in the embodiment to detect whether there is a banknote.
- the ED transmission light source panel has two light source modes, and the two light source modes alternately provide a transmission light source for the contact sensor to collect banknote image data.
- the image acquisition processing board further includes a memory, the memory includes two buffer areas and a register for storing banknote image data collected by the touch sensor, and the register is used to represent the banknote image in the buffer area. Type of data: 1 indicates strong light image data, and 0 indicates low light image data.
- the FPGA drives the CIS to perform image data acquisition in a progressive scan mode.
- the CIS horizontal resolution 200dpi and the vertical resolution to 100dpi.
- the banknote passes through the channel at a speed of lm/s and advances at a constant speed.
- the FPGA needs to collect one line of image data, so the FPGA internally sets a clock MCLK with a period of 0.125ms, whenever the rising edge of the clock is detected. When it arrives, it means that the banknote has advanced by 0.125mm, that is, the scan is started. Process, scanning a line of images.
- the LED In order to obtain two images with different brightness, the LED needs to generate two different kinds of light.
- the ratio is about 1: 3 (the two coefficients correspond to the processing of new and old banknotes respectively), the actual test corresponds to 30us and 90us, respectively, both less than the banknote advance 0.125
- the time required for mm, the extra time, the LED is off.
- the FPGA detects the rising edge of MCLK
- the LED's on-time is switched once, and the LED is illuminated.
- the CIS is sensed to reach the upper limit of the on-time value. The LED is off.
- the LED is illuminated by strong light, the intensity of CIS induction is large, and the signal output amplitude is large.
- analog-to-digital converter AD After conversion by analog-to-digital converter AD, a line of strong light image data is formed; LED is irradiated with weak light, CIS-induced light The intensity is small and the output amplitude is small.
- analog-to-digital converter AD After being converted by the analog-to-digital converter AD, a line of low-light image data is formed. The FPGA needs to acquire this row of data into the image buffer in the slice within 0.125ms.
- a register is also provided for indicating the type of image data in the image buffer area: 1 indicates strong light image data, and 0 indicates low light image data.
- the DSP internally sets two buffer areas to store the two types of image data. After the FPGA collects one line of image data, it notifies the DSP to acquire the data by interrupt. The DSP enters the interrupt service routine, detects the image type register of the FPGA, learns the image type of the image, and then starts the Enhanced Direct Memory Access (EDMA) transmission, and stores the data in the space corresponding to the image type in order. .
- the FPGA scans 120mm (equivalent to collecting 960 lines of data) and ends the scan. When all the image data has been transferred, the two buffers of the DSP will acquire two images, one for each image, one for each image, 480 lines.
- the banknote number identification method includes: Step 1: acquiring a strong light image data of a banknote and a weak light by a transmission imaging method and alternating illumination of a transmitted light source strong light mode and a low light mode Image data; Step 2, performing edge detection on the low light image data, acquiring four edges of the image, and determining the target image; Step 3, processing the target image, identifying the version of the banknote, the face value, facing, and positioning the banknote number area; Step 4: Calling a pattern recognition algorithm to identify, using a pattern recognition method based on an artificial neural network, comparing the gray level of the banknote image with a threshold value, and identifying the oldness of the banknote, and if the old banknote is used, identifying the strong light image data; If the new banknote
- step 2 the low-light image data is used for edge detection to obtain the target image.
- step 3 since the position of the banknote number on the banknote is fixed, the banknote number area can be positioned according to the version, the face value, and the orientation of the banknote.
- step 2 the coordinates of the four vertices of the banknote image are first obtained, and the slope of the straight line where the banknote frame is located is calculated by using the least squares straight line fitting method, and then the four edges of the image are acquired.
- the specific process of acquiring a strong light image data and a low light image data of the banknote in the step 1 includes: Step 101: detecting a position sensor state; Step 102, determining whether the position sensor is triggered, determining that is, Then, go to step 103, otherwise go back to step 101; Step 103, start scanning, obtain banknote image data, the line counter is cleared, and then go to step 104; Step 104, detect the rising edge of MCLK; Step 105, determine whether the detected MCLK rising edge, if yes, go to step 106, if no, go back to step 104; Step 106, LED switches strong light illumination; Step 107, FPGA drives CIS to collect one line of image data, and then proceeds to step 108 and steps simultaneously 120, Step 108 and subsequent steps are processed in parallel with step 120 and subsequent steps; Step 108, detecting the rising edge of MCLK again; Step 109, determining whether the rising edge of MCLK is detected, and if yes, proceeding to step 110,
- Step 112 the FPGA line counter is incremented by 2; Step 113, it is determined whether the FPGA line counter is equal to 960, if yes, go to step 114, if no, go back to step 104; Step 114, image collection is completed, end scanning; Step 120 , the DSP enters the interrupt service program; Step 121, detecting the image type register; Step 122, determining whether the image belongs to the strong light image data, if yes, proceeding to step 123, if not, proceeding to step 124; Step 123, The row data is stored in the highlight image buffer; in step 124, the row data is stored in the low light image buffer.
- Steps 120 to 124 are image storage processes, that is, one line of image data is stored once per scan, and is stored in a sub-image data type, and the process can be performed in parallel with the image scanning process, for example, step 107 is simultaneously transferred.
- Steps 108 and 120 may be stored first after each line of image scanning, and then scanned for the next line of images. That is to say, after step 107, the process may first proceed to step 120, and then perform steps 121 and 122 until step 123 or After 124, step 108 is performed.
- this processing speed is reduced, and may affect the setting of the internal clock MCLK period of the field editable logic gate array, and also affect the setting of the white light LED transmission source on time, which may need to be re-adjusted. Therefore, it is preferable that the image scanning and the reading and storing of each line of image data are performed in parallel.
- the dual-mode scanning is adopted, and the algorithm uses the clear image in the old banknote image to identify, and uses the dark image in the new banknote image to identify, and the banknote number image is clear, which is suitable for the algorithm to locate the banknote number and correctly identify it.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2013347512A AU2013347512B2 (en) | 2012-11-15 | 2013-07-05 | Paper currency number recognition apparatus and recognition method |
US14/426,972 US9741193B2 (en) | 2012-11-15 | 2013-07-05 | Paper currency number recognition apparatus and recognition method |
EP13854512.4A EP2922037A4 (en) | 2012-11-15 | 2013-07-05 | DETECTION DEVICE AND DETECTION PROCEDURE FOR DIRECTORY NUMBERS |
ZA2015/02309A ZA201502309B (en) | 2012-11-15 | 2015-04-07 | Paper currency number recognition apparatus and recognition method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201210462080.3A CN102930636B (zh) | 2012-11-15 | 2012-11-15 | 纸币号码识别装置和识别方法 |
CN201210462080.3 | 2012-11-15 |
Publications (1)
Publication Number | Publication Date |
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WO2014075452A1 true WO2014075452A1 (zh) | 2014-05-22 |
Family
ID=47645424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CN2013/078911 WO2014075452A1 (zh) | 2012-11-15 | 2013-07-05 | 纸币号码识别装置和识别方法 |
Country Status (7)
Country | Link |
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US (1) | US9741193B2 (zh) |
EP (1) | EP2922037A4 (zh) |
CN (1) | CN102930636B (zh) |
AU (1) | AU2013347512B2 (zh) |
CL (1) | CL2015001060A1 (zh) |
WO (1) | WO2014075452A1 (zh) |
ZA (1) | ZA201502309B (zh) |
Cited By (1)
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CN104916037A (zh) * | 2015-06-26 | 2015-09-16 | 深圳市中钞信达金融科技有限公司 | 一种纸币冠字号识别装置及方法 |
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CN102930636B (zh) | 2012-11-15 | 2014-10-22 | 广州广电运通金融电子股份有限公司 | 纸币号码识别装置和识别方法 |
CN103049750B (zh) | 2013-01-11 | 2016-06-15 | 广州广电运通金融电子股份有限公司 | 字符识别方法 |
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CN103310528B (zh) * | 2013-07-08 | 2016-08-17 | 广州广电运通金融电子股份有限公司 | 图像补偿修正方法及识别验钞装置 |
TW201503062A (zh) * | 2013-07-09 | 2015-01-16 | Climax Machine Industry Co Ltd | 整鈔裝置之系統及方法 |
CN103400440A (zh) * | 2013-08-15 | 2013-11-20 | 广州广电运通金融电子股份有限公司 | 一种磁信号检测方法及装置 |
CN103413170B (zh) * | 2013-08-19 | 2016-05-11 | 电子科技大学 | 用于点钞机纸币边缘的实时定位方法 |
CN104464077A (zh) * | 2014-11-12 | 2015-03-25 | 迪堡金融设备有限公司 | 一种纸币冠字码的识别方法及其装置 |
CN105447826B (zh) * | 2015-11-06 | 2018-09-07 | 东方通信股份有限公司 | 一种纸币图像采集的处理方法 |
CN115212547A (zh) | 2015-11-19 | 2022-10-21 | 天使集团股份有限公司 | 桌面游戏的管理系统、游戏币及检查装置 |
CN106856021A (zh) * | 2016-10-08 | 2017-06-16 | 长沙恒强电子科技有限公司 | 一体化防伪检测传感器模块及具有该模块的点验钞机 |
CN108022363A (zh) * | 2016-11-02 | 2018-05-11 | 深圳怡化电脑股份有限公司 | 一种纸币面向的识别方法及装置 |
CN107085885A (zh) * | 2017-03-22 | 2017-08-22 | 深圳怡化电脑股份有限公司 | 一种验钞数据的采集方法、存储方法及其装置 |
CN107610319A (zh) * | 2017-08-07 | 2018-01-19 | 上海灵岳电子设备有限公司 | 基于单接触式图像传感器的纸币信息识别装置及方法 |
US11392521B2 (en) * | 2020-04-13 | 2022-07-19 | Tcl China Star Optoelectronics Technology Co., Ltd. | Heterogeneous computing system and heterogeneous computing method using the system |
CN111737169B (zh) * | 2020-07-21 | 2020-11-27 | 成都智明达电子股份有限公司 | 一种基于edma的大容量高速行列输出缓存结构的实现方法 |
CN113538809B (zh) * | 2021-06-11 | 2023-08-04 | 深圳怡化电脑科技有限公司 | 一种基于自助设备的数据处理方法和装置 |
CN114882632A (zh) * | 2022-04-02 | 2022-08-09 | 温州市质量技术检测科学研究院 | 一种基于色彩识别防伪的纸币新旧检测点钞机及其方法 |
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- 2013-07-05 AU AU2013347512A patent/AU2013347512B2/en not_active Ceased
- 2013-07-05 EP EP13854512.4A patent/EP2922037A4/en not_active Withdrawn
- 2013-07-05 WO PCT/CN2013/078911 patent/WO2014075452A1/zh active Application Filing
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2015
- 2015-04-07 ZA ZA2015/02309A patent/ZA201502309B/en unknown
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KR101014974B1 (ko) * | 2008-08-19 | 2011-02-16 | 엘지엔시스(주) | 지폐 이미지 인식 장치 및 방법 |
CN102005078A (zh) * | 2010-12-23 | 2011-04-06 | 北京新岸线软件科技有限公司 | 一种纸币、票券识别方法和装置 |
CN102169608A (zh) * | 2011-05-27 | 2011-08-31 | 徐端全 | 多光谱纸币验钞机的设计方法 |
CN102324133A (zh) * | 2011-08-10 | 2012-01-18 | 深圳市怡化电脑有限公司 | 用于钞票识别的接触式图像传感器模组 |
CN102930636A (zh) * | 2012-11-15 | 2013-02-13 | 广州广电运通金融电子股份有限公司 | 纸币号码识别装置和识别方法 |
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CN104916037A (zh) * | 2015-06-26 | 2015-09-16 | 深圳市中钞信达金融科技有限公司 | 一种纸币冠字号识别装置及方法 |
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AU2013347512A1 (en) | 2015-04-02 |
ZA201502309B (en) | 2016-01-27 |
US20150279141A1 (en) | 2015-10-01 |
CN102930636B (zh) | 2014-10-22 |
AU2013347512B2 (en) | 2016-06-02 |
EP2922037A1 (en) | 2015-09-23 |
EP2922037A4 (en) | 2015-11-11 |
CN102930636A (zh) | 2013-02-13 |
CL2015001060A1 (es) | 2015-06-26 |
US9741193B2 (en) | 2017-08-22 |
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