WO2012094896A1 - 一种纸币、票券的鉴别方法及装置 - Google Patents
一种纸币、票券的鉴别方法及装置 Download PDFInfo
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- WO2012094896A1 WO2012094896A1 PCT/CN2011/078791 CN2011078791W WO2012094896A1 WO 2012094896 A1 WO2012094896 A1 WO 2012094896A1 CN 2011078791 W CN2011078791 W CN 2011078791W WO 2012094896 A1 WO2012094896 A1 WO 2012094896A1
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- color
- banknote
- ticket
- colored pattern
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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
- G07D7/20—Testing patterns thereon
- G07D7/202—Testing patterns thereon using pattern matching
- G07D7/206—Matching template patterns
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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
- G07D7/20—Testing patterns thereon
Definitions
- the present invention relates to the field of image processing and identification technologies, and in particular, to a banknote and ticket identification method and apparatus. Background technique
- the detection of the fluorescent characteristics is usually under the illumination of the ultraviolet light source, and the true and false coins have different fluorescence reactions, and the fluorescent fluorescence sensor is used to detect the excited fluorescence.
- the fluorescent fluorescence sensor is used to detect the excited fluorescence.
- it is generally CCD, CM0S, etc., and the corresponding equipment is also widely used in various manufacturers' products.
- the use of programmable color sensors or color sensor arrays allows for accurate quantification of colors, which allows for more accurate identification of the authenticity of banknotes.
- the color quantized value of one sensor can be analyzed compared to the conventional method, or the color quantized values of each sensor in the sensor array can be combined and analyzed. Therefore, the purpose of large-scale detection and multi-point color analysis is achieved, because the sensor is small in size, thereby simplifying the hardware structure and improving the stability of the system.
- a sensor is a device that can sense external information and convert it into a usable signal according to certain rules. Simply put, it is a device that converts an external signal into an electrical signal.
- the sensor consists of a sensing component and a converter. There are many kinds of sensing units, and they are divided into physical, chemical, and biological based on the principle of sensing external information.
- the physical class is based on physical effects such as force, heat, light, and electricity.
- the photosensor is mainly composed of photosensitive elements, and currently has a photoresistor, a photodiode, a phototransistor, a photocoupler, a photocell, and the like.
- the important parameters are: photocurrent. At a certain external voltage, when there is light ( ⁇ ⁇ ⁇ illuminance), the current that receives the photoresistor is called photocurrent.
- Other parameters are response time, sensitivity, spectral response, illumination characteristics, and more.
- the photodiode has a plexiglass lens seal and a window that can collect light and a photosurface, so the sensitivity and response time of the photodiode are much better than the photoresist.
- the photodiode has good linearity, fast response, high sensitivity to a wide range of wavelengths of light, and low noise.
- the color change characteristic of the color changing ink is detected.
- two CMOS images are used for the positive side. If the mixing point is required, 8 CMOS is required to complete the above-mentioned mapping function. Then through the image processing algorithm for color extraction, anti-counterfeiting identification. For other color security points, you need to collect the corresponding image to continue processing.
- the RMB is made of special paper (including more than 85% of high-quality cotton), and the counterfeit banknotes are usually made of bleached plain paper.
- the bleached paper is exposed to ultraviolet light (blue light with a wavelength of 365). Fluorescence reaction occurs (violation of blue light with a wavelength of 420 - 460 nm is excited by ultraviolet light), and the renminbi has no fluorescence reaction. Therefore, by irradiating the moving banknote with an ultraviolet light source and simultaneously detecting the fluorescence of the banknote with a silicon photocell, it is possible to discriminate whether the banknote is true or false.
- a color filter having a wavelength that matches the fluorescence reaction wavelength of the counterfeit banknote must be installed on the surface of the silicon photocell.
- the main problem in this way is that the detection effect has a lot to do with the filtering effect of the color filter. Because there are many sources of counterfeit banknotes, different fake gangs are made based on different materials of different devices, and there is no material consistency. Therefore, the excited fluorescence will inevitably vary with the material inconsistency.
- the conventional fluorescent sensor color filter is a fixed wavelength, and the fluorescence transmission effect of the same wavelength is inevitable, and the other fluorescence transmission effects of the wavelength change are inevitably deteriorated, which may cause the counterfeit currency to be missed.
- the banknotes are counterfeited by the detection of fluorescent inks (such as the fluorescent characters on the front side of the fifth edition of the renminbi).
- fluorescent inks such as the fluorescent characters on the front side of the fifth edition of the renminbi.
- the imitation of the fluorescent ink printed graphics has a comparison with the real coins.
- the obvious chromatic aberration produces a fluorescence reaction of different intensity wavelengths, but it needs to be detected by a fluorescent reflection sensor as in the case of detecting the material, but the transmission wavelength of the color filter on the silicon photocell needs to be consistent with the fluorescence reaction wavelength of the real banknote. Therefore, this traditional method cannot flexibly detect the precise range of wavelengths. After the filter is fixed, the range of the detected band has been determined.
- the fluorescent effect caused by the fouling caused by the circulation of the genuine currency may cause the fluorescent effect to be deteriorated, and at this time, it is easy to cause the misidentification of the genuine currency.
- the present invention provides a banknote and ticket identification method and apparatus, which can quickly and accurately identify the authenticity of a banknote or a ticket.
- a banknote and ticket identification method according to an embodiment of the present invention provides a color sensor according to a layout of a banknote and a ticket layout on a predetermined portion of the transport channel; the method includes:
- the color sensor collects color information in a range of the area where the predetermined colored pattern is on the banknote or the ticket;
- the authenticity of the banknote or ticket is judged based on the measured color.
- At least two color sensors are disposed at predetermined locations on the transport path, the at least two color sensors being respectively disposed on both sides of the transport channel, the at least two color sensors respectively from the banknote or ticket
- the two sides of the collection pass the color information of the area of the banknote or the ticket on the ticket where the colored pattern is located;
- the color of the colored pattern is measured, specifically:
- a banknote and ticket identification device provided by an embodiment of the invention includes:
- a color sensor which is disposed at a predetermined position on the conveying passage according to the layout of the banknote and the ticket, and is used for collecting color information in a range of the area where the predetermined colored pattern is on the banknote or the ticket;
- the color sensor collects the color information in the region of the colored pattern, and provides the color information to the measuring module;
- a calculating module configured to calculate a color of the colored pattern based on color information in a range of a region where the colored pattern of the color sensor is collected;
- the judging module judges the authenticity of the banknote or the ticket according to the measured color.
- Another banknote and ticket identification device provided by the embodiment of the invention includes:
- At least two color sensors are disposed at predetermined positions on the conveying passage according to the banknote and the ticket layout, and the at least two color sensors are respectively disposed on both sides of the conveying passage for collecting the banknotes or the ticket Color information within the area of the colored pattern;
- a calculating module configured to calculate a color of the colored pattern based on color information in a range of a region where the colored pattern of the color sensor is collected;
- a judging module judging whether the banknote or the ticket is authentic according to the measured color
- the at least two color sensors collect color information in a range of a region of the banknote or the ticket on the ticket passing through the conveying channel from the two sides of the banknote or the ticket; and the region of the colored pattern in which the enthalpy is collected Color information is sent to the calculation module for calculation to obtain a color of the collected colored pattern; the determining module compares the calculation result with a predetermined colored pattern color, and determines whether there is the same color pattern based on the comparison result. s color.
- Another banknote and ticket identification device provided by the embodiment of the invention includes:
- At least one set of color sensors each set comprising two color sensors, respectively disposed on the same side of the transport path, simultaneously collecting banknotes or tickets passing through the transport channel from different angles on the same side of the banknote or ticket Color information in the area of the area where the color ink pattern is on the coupon;
- a calculating module configured to calculate a color of the color changing ink pattern based on color information in a range of a region of the color changing ink pattern collected by the color sensor;
- a judging module judging whether the banknote or the ticket is authentic according to the measured color
- At least two sets of color sensors are disposed on a predetermined portion of the conveying passage, and the at least two sets of color sensors are respectively disposed on both sides of the conveying passage;
- One of each set of color sensors collects the color information from a first angle ( ⁇ 1), and another color sensor collects the color information from a second angle ( ⁇ 2); wherein the second angle ( ⁇ 2) and the first angle
- the difference of ( ⁇ 1) is greater than a predetermined value ( ⁇ );
- the color sensors of each group send the color information in the range of the color ink pattern collected by each group of color sensors to the color calculation module for calculation, and the calculation result is used to determine the color of the color changing ink pattern to determine the banknote or The authenticity of the ticket.
- the banknote and ticket identification method and apparatus proposed in the embodiment use the color feature of the colored pattern on the banknote or the ticket to identify the banknote or the ticket.
- the technical solution based on the color detection is simple. Accurate and fast, easy to implement and low cost.
- FIG. 1 is a flow chart of a method for authenticating a banknote according to Embodiment 1 of the present invention
- FIG. 2 is a schematic structural diagram of a banknote discriminating device provided in Embodiment 1 of the present invention.
- FIG. 3 is a schematic view showing the setting of a color sensor according to Embodiment 2 of the present invention.
- FIGS. 5a and 5b are respectively digital images of fluorescent inks of genuine and counterfeit coins obtained in Embodiment 2 of the present invention
- FIG. 6 is a schematic structural diagram of still another banknote discriminating device provided in Embodiment 3 of the present invention. detailed description
- the color of the object usually seen is actually that the surface of the object absorbs a part of the colored component of the white light (daylight) that is irradiated onto it, and the other part of the reflected color reflects the reaction of the colored light in the human eye.
- White is composed of visible light of various frequencies, that is, white light contains various colors of light (such as red R, yellow ⁇ , green 0, blue ⁇ , B, purple P).
- the various colors are a mixture of three primary colors (red, green, blue) in different proportions. According to the principle of the three primary colors, if the values of the three primary colors constituting the respective colors are known, the color of the object to be tested can be known.
- a color filter when a color filter is selected, it only allows a certain primary color to pass, preventing the passage of other primary colors. For example: When the red filter is selected, only red can pass through the incident light, and both blue and green are blocked, so that the intensity of the red light can be obtained. Similarly, by selecting other filters, the blue can be separately obtained. The intensity of shade and green light. With these three values, the color of the light projected onto the color sensor can be analyzed.
- the required filters are dynamically selected through two programmable pins.
- a programmable ratio factor (such as 100%, 20%, or 2%) or a power-down mode can also be selected through two programmable pins.
- the output scaling factor allows the sensor's output to adapt to different measurement ranges and improves its adaptability.
- banknotes or tickets contain colored patterns (including color changing ink patterns, fluorescent colored patterns), the color features of these colored patterns can be used to identify banknotes or tickets, and the present invention proposes corresponding banknote and ticket identification methods.
- the device the technical solution based on color detection, the steps are simple, accurate and fast, easy to implement and low in cost.
- a color sensor is disposed at a predetermined portion on the transport path in accordance with the layout of the banknote layout.
- a banknote identification method provided by this embodiment includes the following steps:
- the color sensor collects color information in a region where the predetermined colored pattern is on the banknote;
- the position of the colored pattern on the banknote can be predetermined, and therefore, the range of the area in which the colored pattern may appear when the banknote to be inspected passes through the conveying path can be roughly determined. As long as the color information in the area is collected, the color information of the predetermined colored pattern on the banknote can be obtained.
- a plurality of color sensors can be used to form the color sensor array such that the area of the cluster is larger.
- the color sensor collects the color information in the range of the area. Specifically, the color sensor obtains the values of the three primary colors of the color information, that is, R, G, and B, and provides the data to the calculation module in the form of a digital signal, which is calculated by the calculation module. Color value.
- each color channel can be quantized into at least 10 binary digits, that is, a conversion precision of 10 bits or more is output. Taking the quantization into a 10-bit binary number as an example, each color channel can be divided into 1024 orders of magnitude, which is very advantageous for accurate measurement of color.
- the color sensor array Since the values of 1, G, and B can be obtained, the definitions of true and false judgments can be made for each of 1 , G, and B, respectively, based on the actual detection characteristics. Especially for complex colors (eg, with multiple colors), the color sensor array is used to collect color information, which can be finely analyzed and identified by the output signal of the color sensor array.
- the measured color can be compared with the color of the colored pattern on the genuine coin. If the same or substantially the same, the banknote to be inspected can be determined to be a genuine coin; otherwise, it is a counterfeit currency.
- step S01 different filters can be selected by controlling the color sensor pins, and different output scale factors can be selected through the control pins to adjust the output frequency range to suit different needs.
- the color pattern color is green
- the G in the detected R, G, and B can be judged, and only the green filter is turned on by programming to judge according to the value of G, and it is obvious that the G value of the real coin is large.
- the counterfeit currency differs from the real coin in that the ink is different from the real coin, so that the G value is relatively It is small, so that when the comparison is made in step S03, the authenticity of the banknote can be discriminated.
- An embodiment of the present invention further provides a bill discriminating device.
- the bill discriminating device 200 includes:
- the color sensor 210 is disposed at a predetermined position on the conveying passage according to the layout of the banknote, and is used for collecting color information in a region of the banknote where the predetermined colored pattern is located;
- the color sensor collects color information in the range of the region where the colored pattern is located, and provides the measurement module;
- the calculating module 220 is configured to calculate a color of the colored pattern based on color information in a range of a region where the colored pattern is collected by the color sensor;
- the determining module 230 determines the authenticity of the banknote based on the measured color.
- the at least two color sensors constitute a color sensor array.
- the colored pattern is a pattern formed by using a fluorescent ink, and a pattern of a certain color is displayed under illumination of a predetermined wavelength range; the bill discriminating device 200 further includes:
- a dedicated light source 240 (not shown) is disposed on the same side of the conveying path as the color sensor for illuminating the area of the colored pattern; if the banknote is illuminated by the dedicated light source, the colored pattern is The color appears.
- the banknote and ticket identification method and apparatus use the color feature of the colored pattern on the banknote or the ticket to identify the banknote or the ticket.
- the technical solution based on the color detection is simple. Accurate and fast, easy to implement and low cost.
- the steps in this embodiment are basically the same as those in the first embodiment, except that in the embodiment, two (or more) color sensors are disposed at predetermined portions on the transport path. As shown in FIG. 3, the two (or more) color sensors are respectively disposed on two sides of the banknote passage, and the two (or more) color sensors are respectively collected from two sides (front and back) of the banknote. Color information in the area of the colored pattern on the banknote of the conveying channel;
- step S02 of the embodiment of the present invention the color of the colored pattern is measured, which is specifically:
- the color information is sent to a color calculation module for calculation, and the calculation result is used to determine whether or not there is the same color as the colored pattern.
- the embodiment further provides a banknote discriminating device.
- the banknote discriminating device 400 includes: two color sensors 410A, 410B, (may also be provided with a plurality of color sensors as needed) disposed on the transport channel 450 according to the layout of the banknote layout In the upper predetermined position, the two color sensors 410A, 410B are respectively disposed on two sides of the conveying passage, and are used for collecting color information in a range of a region where the predetermined colored pattern is located on the banknote;
- the calculating module 420 is configured to calculate color of the colored pattern based on color information in a range of a region where the colored pattern is collected by the color sensor;
- the determining module 430 determines the authenticity of the banknote according to the measured color
- the two color sensors 41 OA , 410B collect color information in the range of the area where the colored pattern is on the banknote passing through the conveying channel from both sides of the banknote; and transmit the color information in the range of the area where the colored pattern is collected to the measuring module 420
- the calculation is performed to obtain the color of the collected colored pattern; the judging module 430 compares the calculation result with the colored pattern color, and determines whether there is the same color as the colored pattern based on the comparison result.
- the colored pattern may be a pattern formed by using a fluorescent ink, and a pattern of a certain color is exhibited under irradiation of light of a predetermined wavelength range.
- the front side is the colorless fluorescent ink digital information, as shown in Figure 5a. Therefore, a yellow sensor that is excited by ultraviolet light can be detected by a color sensor, as shown in Fig. 5b, a digital image of a fluorescent ink of a counterfeit coin. Because the banknotes are shaking left and right when the banknotes are being taken. Therefore, the position of the fluorescent ink number has a certain range, and fluorescence may not be detected by using a color sensor. Therefore, using a combination of multiple programmable color sensors into a color sensor line array to detect colorless fluorescent inks is fast and accurate.
- the apparatus 400 further includes:
- the special light source 440 is configured to emit light of a predetermined wavelength range, and irradiate the area of the colored pattern on the banknote; the banknote irradiated by the special light source 440 has banknotes, so that the color of the colored pattern appears.
- the color features are quickly identified based on the value of the sensor output.
- the positive colorless fluorescent ink signal of RMB 100 is yellow fluorescent under ultraviolet light irradiation, and the yellow fluorescent color of the counterfeit currency is not saturated enough to have a significant difference.
- the back is a colored fluorescent signal, the same The color spectrum of the frontless colorless fluorescent signal is different in pink.
- Software programming can be used to determine whether the output value is one of the two fluorescent signals.
- Traditional fluorescent sensors cannot, in principle, perform simultaneous detection of two kinds of fluorescence.
- color sensors are combined into an array to further improve color detection capabilities.
- the colored pattern on the banknote is a pattern formed by the color changing ink, which is called a color changing ink pattern.
- a predetermined color sensor is disposed on a predetermined portion of the transport path (a plurality of color sensors may also be disposed as needed), and the set of color sensors 610a, 610b are disposed on the same side of the transport path, that is, the banknote shown in FIG. Above the channel, the color sensors 610a, 610b simultaneously collect the color information in the range of the color changing ink pattern on the banknote passing through the conveying channel from different angles; when the system starts detecting, the banknote enters the banknote channel, and the color sensors 610a, 610b start.
- the color information of the color changing ink pattern area on the banknote is collected, the color sensor 610a collects the color information in the range of the coloring ink pattern on the banknote from the first angle ,1, and the other color sensor 610b collects the area from the second angle ⁇ 2
- the color information in the range wherein the difference between the second angle ⁇ 2 and the first angle ⁇ 1 is greater than a predetermined value ⁇ , and the predetermined value ⁇ is generally not to be less than 60°.
- the steps of measuring the color of the colored pattern are as follows:
- the color information in the range of the color ink pattern collected by each set of color sensors is sent to the color calculation module 620 for calculation, whether the color obtained by the color sensors 610a, 610b has a color difference, and the color difference is within a predetermined range to determine the color. Whether the pattern is a pattern generated by using a color changing ink.
- a bill discriminating device 600 provided by the embodiment includes:
- At least one set of color sensors wherein the first group includes two color sensors 610a, 610b, respectively disposed above the banknote channel, and simultaneously discoloring the banknotes passing through the transport channel from different angles on the same side of the banknote Color information within the area of the ink pattern;
- the measuring module 620 is configured to measure color of the color changing ink pattern based on color information in a range of a region of the color changing ink pattern collected by the color sensor;
- the determining module 630 determines the authenticity of the banknote according to the measured color
- two sets of color sensors may be disposed at predetermined locations on the transport path, the two sets of color sensors being respectively disposed on both sides of the transport channel; as shown in FIG. 6, the first set of color sensors 610a, 610b is located above the banknote passage, and the second group of color sensors 610c, 610d are located below the banknote passage, respectively, and color signals in the range of the area where the color-changing ink pattern is collected from both sides of the banknote Interest rate
- the color sensor 610a collects the color information in the range of the area where the color changing ink pattern is on the banknote from the first angle ,1, and the other color sensor 610b collects the color information in the range of the area from the second angle ;2; wherein the second angle ⁇ 2 and The difference of the first angle ⁇ 1 is greater than a predetermined value ⁇ , which should normally be not less than 60. .
- the second set of color sensors 610c, 610d also operate in a manner similar to the first set of color sensors 610a, 610b, respectively concentrating color information within the area.
- Each group of color sensors sends the color information in the range of the colored pattern collected by each group of color sensors to the color calculation module 620 for calculation, and obtains the color values of the colored patterns acquired from different angles; the determining module 630 calculates according to the color As a result, the color of the color changing ink pattern is judged, that is, whether the color obtained by the color sensors 610a, 610b has a color difference, and the color difference is within a predetermined range to determine whether the colored pattern is a pattern generated by the color changing ink, thereby determining the authenticity of the banknote. .
- the first angle ⁇ 1 is 90.
- the color sensor 610a collects the color information of the color changing ink pattern on the banknote from an angle perpendicular to the banknote layout, and the other color sensor 610b collects the color information in the range of the area at an oblique angle.
- each color channel of the color sensor can output a conversion accuracy of more than 10 bits, taking 10 bits as an example, Divide each color channel into 1024 levels. Very good for accurate measurement of color.
- the senor outputs a digital signal that can drive a standard TTL or CMOS logic input so it can be directly connected to a microprocessor or other logic. There is no need for an A/D conversion circuit, making the overall circuit of the system simpler. Different color filters can be selected by controlling the color sensor pins, and different output scale factors can be selected by the control bow to adjust the output frequency range, and the adaptability is strong. Since the price of programmable color sensors is much lower than the price of CM0S and CI S, color sensors can significantly reduce the cost of the system.
- the banknote identification algorithm can be flexibly customized. Since the values of R, G, and B can be obtained, the definitions of true and false judgments can be made for R, G, and B respectively or according to the actual detection characteristics. Especially for the color sensor array output, it is possible to perform complex color analysis to achieve accurate identification.
- the hardware complexity of the detection of the color features of the traditional financial instruments can be solved, and the color feature detection by the imaging schemes such as CMOS and CI S is a mature solution in the industry, and most devices also use such devices for anti-counterfeiting detection. Due to the relatively large size of such equipment, the circuit control is complicated, and it will bring a system construction. The complexity. Simple and fast detection of certain color features with programmable color sensors. In the visual system construction, it has simplified the system and achieved the corresponding detection effect.
- the color detection system is quickly set up, especially for the purpose of rapid detection of features with color-changing effects, such as color-changing ink features, laser holographic anti-counterfeiting marks, and the like.
- the detection range is increased and the amount of color information collected is increased, thereby improving the detection capability of the system.
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Description
一种纸币、 票券的鉴别方法及装置 技术领域
本发明涉及图像处理及识别技术领域,具体涉及一种纸币、票券鉴别方法 及装置。 背景技术
在传统点钞机中,对荧光特征的检测通常是在紫外光源照射下,真假币有 不同的荧光反应,用荧光反射传感器检测激发出来的荧光。 而对其他颜色检测 一般为 CCD、CM0S等釆集设备,相应的此类设备也在各厂家产品中被大量釆用。 而釆用可编程颜色传感器或颜色传感器阵列可以对颜色进行精确量化,因而可 以更准确的鉴别纸币的真伪。与传统方式相比较可以对一个传感器的颜色量化 值进行分析, 或对传感器阵列中的每一个传感器的颜色量化值进行组合分析。 从而达到大范围检测, 多点颜色分析的目的, 由于传感器体积小, 从而简化了 硬件结构, 提高系统的稳定性。
传感器就是能感知外界信息并能按一定规律将这些信息转换成可用信号 的装置, 简单说就是将外界信号转换为电信号的装置。一般来说传感器有感知 元件和转换器两部分组成。 感知单元品种繁多, 就其感知外界信息的原理讲, 分为物理类, 化学类, 生物类等。 其中物理类是基于力、 热、 光、 电等物理效 应。
光传感器主要有光敏元件组成, 目前有光敏电阻器、 光电二极管、 光电三 极管、 光电耦合器、 光电池等。 以光敏电阻为例, 其重要参数有: 光电流。 在 一定外在电压下, 当有光(Ι ΟΟΟ Ιχ 照度)照射时, 领过光敏电阻的电流称为 光电流。 其他参数还有响应时间、 灵敏度、 光谱响应、 光照特性等。
以光电二极管为例,光电二极管在外观上都有一个有机玻璃透镜密封、能 汇集光线与光敏面的窗口,因此光电二极管的灵敏度和响应时间远优于光敏电 阻。 另外光电二极管线性好, 响应速度快, 对宽范围波长的光具有较高的灵敏 度, 噪声低。
随着现代工业生产向高速化、 自动化方向的发展, 生产过程中长期以来由 人眼起主导作用的颜色识别工作将越来越多地被相应的颜色传感器所替代。例 如: 图书馆使用颜色区分对文献进行分类, 能够极大地提高排架管理和统计等
途。 目前的颜色传感器通常是在独立的光电二极管上覆盖经过修正的红、 绿、 蓝滤光片, 然后对输出电信号进行相应的处理。
另外, 包括曰本、 欧洲提出的货币鉴伪的各种专利解决方案中, 大量的是 基于反射式的成像机制, CCD、 CMOS成像设备硬件成本较高, 体积相对较大。 而荧光传感器在硬件不变的情况下由于只能检测固定波长的荧光,无法做到检 测其他频率有所变化的荧光, 因而应用范围有限。 因此, 传统的基于图像方式 或荧光传感器的金融机具在检测变色油墨变色、荧光油墨荧光特征上,具有硬 件成本高, 体积大, 系统结构复杂, 检测光波范围单一等必然缺点。
现有的钞票鉴伪系统的性能直接取决于检测特征点的成像特点。
现有技术中, 检测变色油墨变色特征, 通常釆用两个 CMOS进行正侧两次 拍图, 如果需要混点就需要 8个 CMOS才能完成上述釆图功能。 然后通过图像 处理算法进行颜色提取, 防伪鉴别。对于其他颜色防伪点都需釆集到相应的图 像才能继续处理。
又例如传统的荧光检测原理是针对人民币的纸质进行检测。人民币釆用专 用纸张制造(含 85 %以上的优质棉花), 假钞通常釆用经漂白处理后的普通纸 进行制造, 经漂白处理后的纸张在紫外线(波长为 365讓的蓝光)的照射下会 出现荧光反应(在紫外线的激发下衍射出波长为 420 - 460nm的蓝光),人民币 则没有荧光反应。所以,用紫外光源对运动钞票进行照射并同时用硅光电池检 测钞票的荧光反映, 可判别钞票真假。 为排除环境光对辨伪的干扰, 必须在硅 光电池的表面安装一套透过波长与假钞荧光反应波长一致的滤色片。这种方式 的主要问题是检测效果与滤色片的滤波效果有很大关系, 因为假钞来源众多, 不同造假团伙基于不同设备不同材质制成, 不存在材质的一致性。 因此, 激发 出的荧光随材质的不一致性而必然会有所不同。而传统的荧光传感器滤色片为 固定波长,对相同波长的荧光必然透射效果 4艮好, 而对波长有所变化的其他荧 光透射效果必然变差, 从而可能造成假币漏检。
现有技术中通过荧光油墨(如第五版人民币正面的荧光字)的检测对纸币 进行鉴伪,在波长为 365謹的紫外光照射下,仿制的荧光油墨印刷图文与真币 相比有明显的色差,产生了不同强度的波长的荧光反应,但和检测材质的方式 一样需要用荧光反射传感器进行检测,只是硅光电池上的滤色片的透过波长需 要和真钞荧光反应波长一致。因此这种传统方式不能灵活的检测波长的精确范
围, 在滤色片固定后,检测的波段范围就已经确定。 而真币因流通而产生的污 损等原因会造成荧光效果变差, 此时则很容易造成真币误识别。
综上对于纸币的鉴别 ,用传统方式在产品化阶段存在系统成本高和真币误 检率不易降低、 假币漏检率不易降低等问题。 发明内容 有鉴于此, 本发明提供一种纸币、 票券鉴别方法及装置, 可快速准确地鉴 别纸币或票券的真伪。 本发明实施例提供的一种纸币、 票券鉴别方法, 根据纸币、 票券版面布局 在输送通道上的预定部位设置颜色传感器; 该方法包括:
当待检纸币或票券通过输送通道, 所述颜色传感器釆集所述纸币或票券上 预定有色图案所在区域范围内的颜色信息;
基于所釆集的有色图案所在区域范围内的颜色信息, 测算所述有色图案的 颜色;
根据所测算得到的颜色判断所述纸币或票券的真伪。
更适宜地,在输送通道上预定部位设置有至少两个颜色传感器,所述至少 两个颜色传感器分别设置在所述输送通道两侧,所述至少两个颜色传感器分别 从所述纸币或票券的两面釆集通过输送通道的纸币或票券上有色图案所在区 域范围内的颜色信息;
所述测算有色图案的颜色, 具体为:
将所述至少两个颜色传感器釆集到的有色图案所在区域范围内的颜色信 息输送到颜色测算模块进行计算,计算结果用于确定判断是否存在与有色图案 相同的颜色。 本发明实施例提供的一种纸币、 票券鉴别装置, 包括:
颜色传感器, 根据纸币、 票券版面布局设置在输送通道上预定位置, 用于 釆集所述纸币或票券上预定有色图案所在区域范围内的颜色信息;
当待检纸币或票券通过输送通道, 所述颜色传感器釆集有色图案所在区域 范围内的颜色信息, 提供给测算模块;
测算模块,用于基于所述颜色传感器釆集的有色图案所在区域范围内的颜 色信息, 测算所述有色图案的颜色;
判断模块, 根据所测算得到的颜色判断所述纸币或票券的真伪。
本发明实施例提供的另一种纸币、 票券鉴别装置, 包括:
至少两个颜色传感器,根据纸币、票券版面布局设置在输送通道上预定位 置,所述至少两个颜色传感器分别设置在所述输送通道两侧,用于釆集所述纸 币或票券上预定有色图案所在区域范围内的颜色信息;
测算模块,用于基于所述颜色传感器釆集的有色图案所在区域范围内的颜 色信息, 测算所述有色图案的颜色;
判断模块, 根据所测算得到的颜色判断所述纸币或票券的真伪;
所述至少两个颜色传感器从所述纸币或票券的两面釆集通过输送通道的 纸币或票券上有色图案所在区域范围内的颜色信息;并将釆集到的有色图案所 在区域范围内的颜色信息输送到所述测算模块进行计算,得到釆集的有色图案 的颜色; 所述判断模块将所述计算结果与预定的有色图案颜色进行比对,基于 比对结果判断是否存在与有色图案相同的颜色。 本发明实施例提供的又一种纸币、 票券鉴别装置, 包括:
至少一组颜色传感器,每组包括两个颜色传感器,该两个颜色传感器分别 设置在所述输送通道同一侧,在纸币或票券的同一面从不同角度同时釆集通过 输送通道的纸币或票券上变色油墨图案所在区域范围内的颜色信息;
测算模块,用于基于所述颜色传感器釆集的变色油墨图案所在区域范围内 的颜色信息, 测算所述变色油墨图案的颜色;
判断模块, 根据所测算得到的颜色判断所述纸币或票券的真伪;
在输送通道上预定部位设置有至少两组颜色传感器,所述至少两组颜色传 感器分别设置在所述输送通道两侧;
每组颜色传感器中之一从第一角度(Θ1 )釆集所述颜色信息, 另一颜色传 感器从第二角度(Θ2 )釆集所述颜色信息;其中第二角度(Θ2 )与第一角度(Θ1 ) 的差值大于预定值(ω );
所述各组颜色传感器将每组颜色传感器釆集到的变色油墨图案所在区域 范围内的颜色信息输送到颜色测算模块进行计算,计算结果用于判断变色油墨 图案的颜色,以确定所述纸币或票券的真伪。综上所述,本实施例提出的纸币、 票券鉴别方法及装置,利用纸币或票券上有色图案的颜色特征对纸币或票券进 行鉴别, 这种基于颜色进行检测的技术方案, 步骤简单、 准确而快捷, 易于实 现且成本低。
说明书附图
图 1为本发明实施例一中提供的纸币鉴别方法流程图;
图 2为本发明实施例一中提供的纸币鉴别装置的架构示意图;
图 3为本发明实施例二中颜色传感器的设置示意图;
图 4是本发明实施例二中提供的另一纸币鉴别装置的架构示意图; 图 5a及 5b分别为本发明实施例二中获取的真币和假币的荧光油墨数字图 像;
图 6为本发明实施例三中提供的又一纸币鉴别装置的架构示意图。 具体实施方式
通常所看到的物体颜色, 实际上是物体表面吸收了照射到它上面的白光 (日光)中的一部分有色成分, 而反射出的另一部分有色光在人眼中的反应。 白 色是由各种频率的可见光混合在一起构成的,也就是说白光中包含着各种颜色 的色光(如红 R、 黄¥、 绿0、 青¥、 B、 紫 P)。 根据德国物理学家赫姆霍兹 (He l inhol tz)的三原色理论可知, 各种颜色是由不同比例的三原色(红、 绿、 蓝)混合而成的。 由三原色感应原理可知, 如果知道构成各种颜色的三原色的 值, 就能够知道所测试物体的颜色。 对于颜色传感器来说, 当选定一个颜色滤 波器时, 它只允许某种特定的原色通过, 阻止其他原色的通过。 例如: 当选择 红色滤波器时, 入射光中只有红色可以通过, 蓝色和绿色都被阻止, 这样就可 以得到红色光的光强; 同理, 选择其他的滤波器, 就可以分分别得到蓝色光和 绿色光的光强。 通过这三个值, 就可以分析投射到颜色传感器上的光的颜色。
而可编程颜色传感器在工作时,通过两个可编程的引脚来动态选择所需要 的滤波器。 还可以通过两个可编程引脚来选择一定比例的输出比例因子 (如 100%、 20%或 2% ), 或电源关断模式。 输出比例因子使传感器的输出能够适应 不同的测量范围, 提高了它的适应能力。
鉴于很多的纸币或票券中包含有色图案(包括变色油墨图案、荧光有色图 案), 可利用这些有色图案的颜色特征对纸币或票券进行鉴别, 本发明提出了 相应的纸币、 票券鉴别方法及装置, 这种基于颜色进行检测的技术方案, 步骤 简单、 准确而快捷, 易于实现且成本低。
本领域技术人员可知,本发明的技术方案适用于具有有色图案(包括变色 油墨图案、 荧光有色图案)的各种纸币、 票券, 为便于说明本发明的原理、 特 性和优点, 下面以纸币为例进行描述。
【实施例一】
本发明实施例中根据纸币版面布局在输送通道上的预定部位设置颜色传 感器。 参照图 1 , 本实施例提供的一种纸币鉴别方法包括如下步骤:
501 , 当待检纸币通过输送通道, 颜色传感器釆集纸币上预定有色图案所 在区域范围内的颜色信息;
纸币上有色图案的位置是可以预先确定的, 因此, 可大致确定待检纸币通 过输送通道时有色图案可能出现的区域范围。只要釆集该区域范围内的颜色信 息, 就可获取纸币上预定有色图案得颜色信息。
具体实施例中, 可釆用多个颜色传感器构成颜色传感器阵列, 这样釆集的 区域范围更大。
502 , 基于所釆集的有色图案所在区域范围内的颜色信息, 测算所述有色 图案的颜色;
颜色传感器釆集该区域范围内的颜色信息, 具体地, 颜色传感器获取到所 述颜色信息即 R、 G、 B三种基色的数值, 以数字信号的形式提供给计算模块, 由计算模块计算出颜色值。
本发明实施例中釆用的颜色传感器, 其每个颜色通道可以量化成至少 10 位二进制数, 即输出 10位以上的转换精度。 以量化成 10位二进制数为例, 则 可以将每个颜色通道分成 1024个量级, 非常有利于颜色的精确测量。
由于可以获取到1 、 G、 B的值, 可以根据实际的检测特征, 对1 、 G、 B 分别或组合进行真假判断的定义。 特别是对复杂的颜色 (如, 含多种颜色), 釆用颜色传感器阵列釆集其颜色信息,可通过颜色传感器阵列的输出信号进行 精细分析鉴别。
S03, 才艮据所测算得到的颜色判断纸币的真伪。
由于真币上有色图案的颜色是确定的,可将测算得到的颜色与真币上有色 图案的颜色进行比对, 若相同或基本一致, 则可判定待检纸币为真币; 否则为 假币。
在步骤 S01中, 通过对颜色传感器引脚的控制可以选择不同的滤波器, 还 可以通过控制引脚选择不同的输出比例因子,对输出频率范围进行调整, 以适 应不同的需求。 具体地, 若有色图案颜色为绿, 可对检测到的 R、 G、 B中的 G 进行判断,通过编程仅打开绿色滤波器根据其 G的数值进行判断,显然真币的 G值较大, 而假币由于油墨与真币不同, 其绿色与真币有差异, 从而 G值相对
较小, 这样在步骤 S03中进行比对时, 就可鉴别出纸币的真伪。
本发明实施例还提供的一种纸币鉴别装置,如图 2所示,该纸币鉴别装置 200包括:
颜色传感器 210, 根据纸币版面布局设置在输送通道上预定位置, 用于釆 集所述纸币上预定有色图案所在区域范围内的颜色信息;
当待检纸币通过输送通道, 所述颜色传感器釆集有色图案所在区域范围内 的颜色信息, 提供给测算模块;
测算模块 220, 用于基于所述颜色传感器釆集的有色图案所在区域范围内 的颜色信息, 测算所述有色图案的颜色;
判断模块 230, 根据所测算得到的颜色判断所述纸币的真伪。
所述至少两个颜色传感器构成颜色传感器阵列。
所述有色图案为釆用荧光油墨生成的图案,在预定波长范围的光照射下才 会显现出来某种颜色的图案; 该纸币鉴别装置 200还包括:
专用光源 240(图中未示出),与所述颜色传感器设置在输送通道的同一侧, 用于照射所述有色图案所在区域范围; 若该专用光源照射的纸币面上有纸币, 使得有色图案的颜色显现出来。
综上所述, 本实施例提出的纸币、 票券鉴别方法及装置, 利用纸币或票券 上有色图案的颜色特征对纸币或票券进行鉴别,这种基于颜色进行检测的技术 方案, 步骤简单、 准确而快捷, 易于实现且成本低。
【实施例二】
本实施例中的步骤与实施例一中基本相同, 区别之处在于, 本实施例中, 在输送通道上预定部位设置有两个(或多个)颜色传感器。 如图 3所示, 这两 个(或多个)颜色传感器分别设置在所述走钞通道两侧, 这两个(或多个)颜 色传感器分别从纸币的两面(正面及反面)釆集通过输送通道的纸币上有色图 案所在区域范围内的颜色信息;
这是因为纸币进入走钞通道有两种可能情况, 即其一是纸币正面朝上,另 一种情况是纸币反面朝上, 本实施例中在设置走钞通道两侧, 使得这两个(或 多个)颜色传感器分别从纸币的两面(正面及反面)釆集颜色信息。 这样, 不 论纸币进入走钞通道是那种情况, 都可一次获取所需的颜色信息。
本发明实施例的步骤 S02中测算有色图案的颜色, 具体为:
将至少两个(或多个)颜色传感器釆集到的有色图案所在区域范围内的颜
色信息输送到颜色测算模块进行计算,计算结果用于确定判断是否存在与有色 图案相同的颜色。
本实施例还提供一种纸币鉴别装置,参照图 4,该纸币鉴别装置 400包括: 两个颜色传感器 410A, 410B, (也可以根据需要设置多个颜色传感器) 根据纸币版面布局设置在输送通道 450上预定位置,该两个颜色传感器 410A, 410B分别设置在所述输送通道两侧, 用于釆集纸币上预定有色图案所在区域 范围内的颜色信息;
测算模块 420, 用于基于所述颜色传感器釆集的有色图案所在区域范围内 的颜色信息, 测算所述有色图案的颜色;
判断模块 430, 根据所测算得到的颜色判断所述纸币的真伪;
两个颜色传感器 41 OA , 410B从纸币的两面釆集通过输送通道的纸币上有 色图案所在区域范围内的颜色信息;并将釆集到的有色图案所在区域范围内的 颜色信息输送到测算模块 420进行计算,得到釆集的有色图案的颜色;判断模 块 430将所述计算结果与有色图案颜色进行比对,基于比对结果判断是否存在 与有色图案相同的颜色。
在本发明的上述两实施例中,有色图案可为釆用荧光油墨生成的图案,在 预定波长范围的光照射下才会显现出来某种颜色的图案。 例如, 对于 05版的 100元人民币为例, 在正面为无色荧光油墨数字信息, 如图 5a所示。 因此可 以用颜色传感器对其用紫外光激发出的黄色荧光进行检测, 如图 5b所示为一 种假币的荧光油墨数字图像。 因为在走钞时, 纸币存在左右晃动。 因此这个荧 光油墨数字的位置有一定范围, 使用一个颜色传感器可能会检测不到荧光,。 因此,釆用多个可编程颜色传感器组合成颜色传感器线阵列,对无色荧光油墨 进行检测, 快速而准确。
若有色图案为釆用荧光油墨生成的图案,在预定波长范围的光照射下才会 显现出来某种颜色的图案; 该装置 400还包括:
专用光源 440, 用于发出预定波长范围的光, 照射纸币上有色图案所在区 域范围;该专用光源 440照射的纸币面上有纸币,使得有色图案的颜色显现出 来。
本实施例中,根据传感器输出的数值, 快速识别颜色特征。在本发明实施 例中, 对人民币 100元的正面无色荧光油墨信号在紫外光照射下为黄色荧光, 而假币黄色荧光色度不够饱和真币有较明显的区别。背面为有色荧光信号, 同
正面的无色荧光信号波段有所不同为粉色。利用软件编程可以对输出值进行判 断是否为两者荧光信号之一。而传统荧光传感器则原理上无法完成两种荧光同 时检测。 另外, 釆用颜色传感器组合成阵列, 进一步提高颜色检测能力。
【实施例三】
本实施例中,纸币上的有色图案为釆用变色油墨生成的图案,称之为变色 油墨图案。
参照图 6, 在输送通道上预定部位设置有一组颜色传感器(也可以根据需 要设置多组颜色传感器),该组颜色传感器 610a, 610b设置在输送通道同一侧, 即图 6中所示位于走钞通道上方, 颜色传感器 610a, 610b分别从不同角度同 时釆集通过输送通道的纸币上变色油墨图案所在区域范围内的颜色信息; 当系统开始检测时, 钞票进入走钞通道, 颜色传感器 610a, 610b开始釆 集纸币上变色油墨图案区域的颜色信息,颜色传感器 610a从第一角度 Θ1釆集 纸币上变色油墨图案所在区域范围内的颜色信息, 另一颜色传感器 610b从第 二角度 Θ2釆集所述区域范围内的颜色信息; 其中第二角度 Θ2与第一角度 Θ1 的差值大于预定值 ω, 该预定值 ω通常应不小于 60° 。
测算有色图案的颜色的步骤, 具体为:
将每组颜色传感器釆集到的变色油墨图案所在区域范围内的颜色信息输 送到颜色测算模块 620进行计算, 通过颜色传感器 610a, 610b得到的颜色是 否有色差,且色差在预定范围, 以判断有色图案是否为釆用变色油墨生成的图 案。
参照图 6, 本实施例提供的一种纸币鉴别装置 600, 包括:
至少一组颜色传感器, 其中第一组包括两个颜色传感器 610a, 610b, 该 两个颜色传感器分别设置在走钞通道上方,在纸币的同一面从不同角度同时釆 集通过输送通道的纸币上变色油墨图案所在区域范围内的颜色信息;
测算模块 620, 用于基于所述颜色传感器釆集的变色油墨图案所在区域范 围内的颜色信息, 测算所述变色油墨图案的颜色;
判断模块 630, 根据所测算得到的颜色判断所述纸币的真伪;
本发明的其他具体实施例中 ,可在输送通道上预定部位设置两组颜色传感 器, 该两组颜色传感器分别设置在所述输送通道两侧; 如图 6所示, 第一组颜 色传感器 610a, 610b位于走钞通道上方, 第二组颜色传感器 610c, 610d位于 走钞通道下方,分别从纸币的两面釆集变色油墨图案所在区域范围内的颜色信
息;
颜色传感器 610a从第一角度 Θ1釆集纸币上变色油墨图案所在区域范围内 的颜色信息,另一颜色传感器 610b从第二角度 Θ2釆集所述区域范围内的颜色 信息; 其中第二角度 Θ2与第一角度 Θ1的差值大于预定值 ω, 该预定值 ω通 常应不小于 60。 。
第二组颜色传感器 610c, 610d也以类似于第一组颜色传感器 610a, 610b 的方式工作, 分别釆集所述区域范围内的颜色信息。
所述各组颜色传感器将每组颜色传感器釆集到的有色图案所在区域范围 内的颜色信息输送到颜色测算模块 620进行计算,得到从不同角度获取的有色 图案的颜色值;判断模块 630根据计算结果判断变色油墨图案的颜色, 即通过 颜色传感器 610a, 610b得到的颜色是否有色差, 且色差在预定范围, 以判断 有色图案是否为釆用变色油墨生成的图案, 从而确定所述纸币的真伪。
具体地, 在实施例中, 第一角度 Θ1为 90。 , 颜色传感器 610a从垂直于 纸币版面的角度釆集纸币上变色油墨图案的颜色信息, 另一颜色传感器 610b 以倾斜的角度釆集所述区域范围内的颜色信息。
综上所述,本发明提供的纸币、票券鉴别技术方案,具有如下特性和优点: 检测精度高, 颜色传感器每个颜色通道可以输出 10位以上的转换精度, 以 10位为例,则可以把每个颜色通道分成 1024个等级。非常有利于颜色的精 确测量。
易于实现且成本低, 传感器输出的是数字信号, 可以驱动标准的 TTL 或 CMOS 逻辑输入, 因此可以直接与微处理器或其他逻辑电路相连接。 不需再需 要 A/D转换电路,使得系统整体电路变得更简单。可通过对颜色传感器引脚的 控制可以选择不同的颜色滤波器,还可以通过控制弓 ]脚选择不同的输出比例因 子, 对输出频率范围进行调整, 适应性强。 由于可编程颜色传感器的价格远低 于 CM0S、 CI S的价格, 用颜色传感器可以大幅降低系统的成本。
可灵活定制纸币鉴别算法, 由于可以获取到 R、 G、 B的值, 可以根据实际 的检测特征, 对 R、 G、 B分别或组合进行真假判断的定义。 特别是对颜色传感 器的阵列输出更是可以进行复杂的颜色分析,达到精确的鉴别。根据本发明可 解决传统金融机具对颜色特征的检测的硬件复杂性, 由于釆用 CMOS , CI S等成 像方案进行颜色特征检测是业内的成熟方案,多数设备也釆用此类设备进行防 伪检测, 由于此类设备体积相对较大, 电路控制复杂, 在系统搭建上会带来一
定的复杂性。 釆用可编程颜色传感器简单而快速的检测检测到某些颜色特征。 在视觉系统搭建中起到了简化系统, 同时达到相应检测效果。
针对不同国家的不同货币防伪特征的特点快速搭建颜色检测系统,特别是 对有变色效果的特征达到快速检测的目的,如变色油墨特征,激光全息防伪标 志等。通过组合阵列既加大了检测范围又增加了釆集到的颜色信息数量,提高 了系统的检测能力。
根据所述公开的实施例,可以使得本领域技术人员能够实现或者使用本发 明。 对于本领域技术人员来说, 这些实施例的各种修改是显而易见的, 并且这 里定义的总体原理也可以在不脱离本发明的范围和主旨的基础上应用于其他 实施例。以上所述的实施例仅为本发明的较佳实施例而已,并不用以限制本发 明, 凡在本发明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均 应包含在本发明的保护范围之内。
Claims
1、 一种纸币、 票券鉴别方法, 其特征在于, 根据纸币、 票券版面布局在 输送通道上的预定部位设置颜色传感器; 该方法包括:
当待检纸币或票券通过输送通道, 所述颜色传感器釆集所述纸币或票券上 预定有色图案所在区域范围内的颜色信息;
基于所釆集的有色图案所在区域范围内的颜色信息, 测算所述有色图案的 颜色;
根据所测算得到的颜色判断所述纸币或票券的真伪。
2、 如权利要求 1所述的方法, 其特征在于, 在输送通道上预定部位设置 有至少两个颜色传感器,所述至少两个颜色传感器分别设置在所述输送通道两 侧 ,所述至少两个颜色传感器分别从所述纸币或票券的两面釆集通过输送通道 的纸币或票券上有色图案所在区域范围内的颜色信息;
所述测算有色图案的颜色, 具体为:
将所述至少两个颜色传感器釆集到的有色图案所在区域范围内的颜色信 息输送到颜色测算模块进行计算,计算结果用于确定判断是否存在与有色图案 相同的颜色。
3、 如权利要求 1或 2所述的方法, 其特征在于,
所述有色图案为釆用荧光油墨生成的图案,在预定波长范围的光照射下才 会显现出来某种颜色的图案。
4、 如权利要求 1所述的方法, 其特征在于, 若所述有色图案为釆用变色 油墨生成的图案;在输送通道上预定部位设置有至少两组颜色传感器,所述至 少两组颜色传感器分别设置在所述输送通道两侧 ,分别从所述纸币或票券的两 面釆集有色图案所在区域范围内的颜色信息;每组包括两个颜色传感器,该两 个颜色传感器分别设置在所述输送通道同一侧,从不同角度同时釆集通过输送 通道的纸币或票券上有色图案所在区域范围内的颜色信息;
每组颜色传感器中之一从第一角度(Θ1 )釆集所述颜色信息, 另一颜色传 感器从第二角度(Θ2 )釆集所述颜色信息;其中第二角度(Θ2 )与第一角度(Θ1 ) 的差值大于预定值(ω );
所述测算有色图案的颜色, 具体为:
将所述每组颜色传感器釆集到的有色图案所在区域范围内的颜色信息输 送到颜色测算模块进行计算,计算结果用于判断有色图案是否为釆用变色油墨 生成的图案。
5、 一种纸币、 票券鉴别装置, 其特征在于, 包括:
颜色传感器, 根据纸币、 票券版面布局设置在输送通道上预定位置, 用于 釆集所述纸币或票券上预定有色图案所在区域范围内的颜色信息;
当待检纸币或票券通过输送通道, 所述颜色传感器釆集有色图案所在区域 范围内的颜色信息, 提供给测算模块;
测算模块,用于基于所述颜色传感器釆集的有色图案所在区域范围内的颜 色信息, 测算所述有色图案的颜色;
判断模块, 根据所测算得到的颜色判断所述纸币或票券的真伪。
6、 如权利要求 5所述的装置, 其特征在于,
所述至少两个颜色传感器构成颜色传感器阵列。
7、 如权利要求 5所述的装置, 其特征在于, 所述有色图案为釆用荧光油 墨生成的图案,在预定波长范围的光照射下才会显现出来某种颜色的图案;该 装置还包括:
专用光源,与所述颜色传感器设置在输送通道的同一侧,用于照射所述有 色图案所在区域范围; 该专用光源照射到纸币、票券面上, 使得有色图案的颜 色显现出来。
8、 一种纸币、 票券鉴别装置, 其特征在于, 包括:
至少两个颜色传感器,根据纸币、票券版面布局设置在输送通道上预定位 置,所述至少两个颜色传感器分别设置在所述输送通道两侧,用于釆集所述纸 币或票券上预定有色图案所在区域范围内的颜色信息;
测算模块,用于基于所述颜色传感器釆集的有色图案所在区域范围内的颜 色信息, 测算所述有色图案的颜色;
判断模块, 根据所测算得到的颜色判断所述纸币或票券的真伪; 所述至少两个颜色传感器从所述纸币或票券的两面釆集通过输送通道的 纸币或票券上有色图案所在区域范围内的颜色信息;并将釆集到的有色图案所 在区域范围内的颜色信息输送到所述测算模块进行计算,得到釆集的有色图案 的颜色; 所述判断模块将所述计算结果与预定的有色图案颜色进行比对,基于 比对结果判断是否存在与有色图案相同的颜色。
9、 如权利要求 8所述的装置, 其特征在于, 所述有色图案为釆用荧光油 墨生成的图案,在预定波长范围的光照射下才会显现出来某种颜色的图案;该 装置还包括:
专用光源,用于发出预定波长范围的光,照射所述有色图案所在区域范围; 该专用光源照射到纸币、 票券面上, 使得有色图案的颜色显现出来。
10、 一种纸币、 票券鉴别装置, 其特征在于, 包括:
至少一组颜色传感器,每组包括两个颜色传感器,该两个颜色传感器分别 设置在所述输送通道同一侧,在纸币或票券的同一面从不同角度同时釆集通过 输送通道的纸币或票券上变色油墨图案所在区域范围内的颜色信息;
测算模块,用于基于所述颜色传感器釆集的变色油墨图案所在区域范围内 的颜色信息, 测算所述变色油墨图案的颜色;
判断模块, 根据所测算得到的颜色判断所述纸币或票券的真伪;
在输送通道上预定部位设置有至少两组颜色传感器,所述至少两组颜色传 感器分别设置在所述输送通道两侧;
每组颜色传感器中之一从第一角度(Θ1 )釆集所述颜色信息, 另一颜色传 感器从第二角度(Θ2 )釆集所述颜色信息;其中第二角度(Θ2 )与第一角度(Θ1 ) 的差值大于预定值(ω );
所述各组颜色传感器将每组颜色传感器釆集到的变色油墨图案所在区域 范围内的颜色信息输送到颜色测算模块进行计算,计算结果用于判断变色油墨 图案的颜色, 以确定所述纸币或票券的真伪。
11、 如权利要求 10所述的装置, 其特征在于,
所述第一角度(Θ1 )为 90。 , 所述颜色传感器中之一从垂直于纸币或票 券版面的角度釆集所述变色油墨图案的正面颜色信息。
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CN107221068A (zh) * | 2017-06-23 | 2017-09-29 | 深圳怡化电脑股份有限公司 | 一种票据鉴伪装置及方法 |
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CN102024286A (zh) * | 2011-01-12 | 2011-04-20 | 北京新岸线软件科技有限公司 | 一种纸币、票券的鉴别方法及装置 |
CN102509381A (zh) * | 2011-11-11 | 2012-06-20 | 南京理工速必得科技股份有限公司 | 一种检测人民币纸币光变油墨的方法及装置 |
JP6009992B2 (ja) * | 2013-06-03 | 2016-10-19 | 日立オムロンターミナルソリューションズ株式会社 | 紙葉類識別装置および光学センサ装置 |
CN108074317A (zh) * | 2018-02-05 | 2018-05-25 | 浙江然鹏电子有限公司 | 一种检验纸币颜色的点验钞机及其控制系统 |
CN108646651A (zh) * | 2018-08-08 | 2018-10-12 | 苏州宝莲灯机器人有限公司 | 一种基于颜色序列识别的机器设备控制系统及其操作方法 |
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JPH0670149A (ja) * | 1992-08-15 | 1994-03-11 | Ricoh Co Ltd | 画像形成装置 |
WO2003063097A1 (en) * | 2001-08-29 | 2003-07-31 | Kim, Im-Yong | The counterfeit detector in-built small size ultraviolet lamp with the blue color sensor |
CN101057263A (zh) * | 2004-11-16 | 2007-10-17 | 日本功勒克斯股份有限公司 | 纸张类识别装置及方法 |
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CN107221068A (zh) * | 2017-06-23 | 2017-09-29 | 深圳怡化电脑股份有限公司 | 一种票据鉴伪装置及方法 |
CN107221068B (zh) * | 2017-06-23 | 2023-09-08 | 深圳怡化电脑股份有限公司 | 一种票据鉴伪装置及方法 |
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