JP3574219B2 - Authenticator - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an authenticity discriminating apparatus that discriminates authenticity of banknotes, passports, ID cards, securities, and the like by observing a display image, and in particular, the type and authenticity of color-printed currency such as banknotes. In order to display the image of the banknote when it is exposed to infrared rays or ultraviolet rays to judge, the feature points are emphasized and displayed on the display screen, so that the authenticity of the currency can be easily determined. Related to the authenticity discriminating apparatus.
[0002]
[Prior art]
As a discriminating apparatus for visually discriminating the type and authenticity of paper sheets such as money, there are a discriminating apparatus using infrared rays and a discriminating apparatus using ultraviolet rays. This type of authenticity discriminating apparatus is configured to perform genuine discrimination by irradiating an object to be discriminated with infrared rays or ultraviolet rays and capturing the image, and observing a monitor display of the captured image. It is used to discriminate bills and the like using a material that reflects light. The discriminating apparatus using infrared rays is effective for paper sheets such as banknotes in which ink that reflects infrared rays and ink that absorbs infrared rays are selectively printed. That is, in such a bill, a portion printed with the reflective ink appears on the monitor screen as a bright image, and a portion printed with the absorbing ink appears dark on the monitor screen. For this reason, a forged image clearly has a different image. Therefore, by observing the display image on the TV monitor with the naked eye, it is possible to easily determine whether or not the banknote or the like is forged.
[0003]
On the other hand, a discriminating apparatus using ultraviolet light is effective for paper sheets such as banknotes mixed with a fluorescent paint. In addition, it is effective for paper sheets into which fibers containing a fluorescent paint have been incorporated, paper sheets into which fluorescent small pieces have been incorporated, or paper sheets which use fluorescent ink for part or all of printing. It is. That is, in such paper sheets, when the ultraviolet rays are irradiated, a portion of the fluorescent paint emerges. Therefore, the observer visually observes the surface of the banknotes or the like irradiated with the ultraviolet rays to determine whether or not the banknotes are forged. Can be easily identified.
[0004]
However, in a conventional authenticity discriminating apparatus using infrared light, observation is performed in a light-shielded room for blocking external light, and facilities such as infrared light, an infrared camera, and a TV monitor are required. Therefore, large-scale equipment was required, and a dedicated operator who was accustomed to working in a dark place was required. On the other hand, even in a conventional authenticity discriminating apparatus using ultraviolet light, observation is performed in a light-shielding room for blocking external light, and equipment such as an ultraviolet irradiation device is required, which requires large-scale equipment, and In order to avoid the risk of getting into eyes, harmful UV-cut glasses were required.
[0005]
Therefore, a discriminating apparatus that does not require a large-scale facility and does not require a dedicated operator has been proposed in a counterfeit discriminating apparatus disclosed in Japanese Patent Application No. 6-105384 by the present applicant. This counterfeit discriminating apparatus is designed to reduce the size and weight of the apparatus and simplify observation, and as shown in FIG. 15, the discriminating apparatus main body 200 is placed on the discrimination target 5 and irradiated with light, Image processing is performed on an object that receives light reflected from the object 5 and the image displayed on the display unit 202 is visually observed so that authenticity can be discriminated. This discriminating apparatus uses an infrared LED that emits infrared light and a UV lamp that emits ultraviolet light as a light source, and uses a CCD (Charge Coupled Device) camera as an imaging means. In addition, a liquid crystal display is used as the display means, and these devices are inscribed in a cube-shaped light-shielding housing 201.
[0006]
[Problems to be solved by the invention]
By the way, in the counterfeit discriminating apparatus of Japanese Patent Application No. 6-105384 described above, the size and weight are reduced compared to other conventional discriminating apparatuses, and the observation is easy, but only the image of the discrimination target is obtained. It is difficult to discriminate between beginners because it is a method of discriminating the authenticity by observing the information. That is, it is necessary to be familiar with the characteristics of various banknotes and the like, and there is a problem that a person who is not a skilled person cannot discriminate. Furthermore, since the comparison is made between the display image and the printed matter, it is not easy to find the difference, and in the case of a sophisticated counterfeit, there is a risk that even a skilled person may mistakenly discriminate.
[0007]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a genuine discriminating apparatus which is portable and can be used by even a novice to discriminate counterfeit bills or the like.
[0008]
[Means for Solving the Problems]
According to the present invention, authenticity can be achieved by placing the object on a discrimination target, irradiating the light, performing image processing on the light received from the target, and visually observing an image displayed on a display unit. An object of the present invention is to provide a light emitting unit that emits light of a specific wavelength, an image receiving unit that converts light of a specific frequency into an electric signal, and setting of a display mode. Input means for accepting, an intrinsic image storage means for storing an image of an intrinsic substance in advance, a display means for displaying a result of identification, an image of the intrinsic object stored in the identification object and the intrinsic image storage means, Control means for processing the difference data of the above and displaying the data on the display means.
[0009]
[Action]
In the present invention, light of a specific wavelength is applied to an object to be identified by a light emitting unit, light of a specific frequency reflected from the object is converted into an electric signal by an image receiving unit, and various display modes are input by an input unit. Is compared with the image of the intrinsic material stored in advance in the intrinsic image storage means, and the difference is displayed as a result. For this reason, unlike the related art, the difference between the display image of the target object and the intrinsic object can be easily known without visually comparing the two. In addition, since an image of an intrinsic material to be used as a sample is displayed, an accurate comparison can be made as compared with a conventional method of comparing an intrinsic material printed on a printed matter.
[0010]
Further, the image stored in the intrinsic image storage means includes both or one of a true paper sheet and a fake paper sheet, and the intrinsic substance selected / set by the input means is regarded as an object to be discriminated. Be compared. Therefore, it is possible to deal with various types of paper sheets, and the target object is not only the authentic ones of bills and certificates, but also those of counterfeit goods. It can also be used for search and search.
[0011]
【Example】
FIG. 1 is a block diagram showing an example of the authenticity discriminating apparatus of the present invention. The light emitting means 10 emits light of a specific wavelength to a discrimination object (sample: hereinafter, a bill). It comprises a light source 11 for irradiation and a light source driver 12 capable of switching the type of irradiation light. In this embodiment, a light source 11 for irradiating infrared rays, ultraviolet rays, or monochromatic light to the bill 5 is provided. The light source driver 12 can switch the light source 11 that emits light to infrared light, ultraviolet light, or monochromatic light according to the setting.
[0012]
The image receiving means 20 is composed of a CCD camera 21, an A / D converter 22, and an image frame memory 23. The CCD camera 21 has sensitivity in all areas such as fluorescent light and monochromatic light reflected from the bill 5. An image sensor is provided. The A / D converter 22 converts an analog signal output from the CCD camera 21 into a digital signal and stores the digital signal in the image frame memory 23. At this time, the address of the image frame memory 23 indicates the position of the pixel on the bill.
[0013]
The intrinsic image storage unit 30 is a storage unit that stores a reference data group to be compared, and a storage medium previously stores a plurality of types of intrinsic objects (comparative objects including both or one of a true bill and a false bill). Are stored as reference data. In FIG. 1, an image frame memory (reference image memory) 31 is used as a storage medium. The reference image memory 31 stores data of the same scale as the image of the banknote 5 captured by the CCD camera 21 in the same configuration as the data of the image frame memory 23 for each denomination and for each side. As a storage medium of the intrinsic image storage means 30, a hard disk may be used, or an exchangeable and rewritable configuration using an IC (Integrated Circuit) card may be used. Furthermore, a configuration that can be replaced using a ROM card may be adopted. In the embodiment, the configuration is such that an IC card can be used.
[0014]
Although the configuration of the input means 60 will be described later, the input means 60 is used for setting various functions. The input means 60 is provided with a plurality of operation buttons, one of which is used to select a plurality of reference images. One is used to specify a display state such as a difference display mode, a parallel display mode, and an overlap display mode. One is used when the display position of the reference image is shifted by an instruction to move the screen in the X-axis and Y-axis directions when the overlap display mode or the parallel display mode is designated, and the reference image is displayed so as to overlap the sample image. Here, the difference display mode is a display mode in which the difference between the sample image and the reference image and the degree of the difference are specified, and the parallel display mode displays the reference image and the sample image in parallel. The display mode is a mode in which the reference image is displayed so as to overlap the sample image.
[0015]
The display means 40 for displaying the discrimination result includes a video RAM 41 for storing the processed data, a liquid crystal display controller 42 for controlling the display of the contents of the video RAM 41, and a liquid crystal display (color display) 43.
[0016]
The control means 50 includes a CPU 51, a control ROM 52, and a work RAM, and the CPU 51 controls the entire apparatus. Further, the CPU 51 operates the data of the image frame memory 23 and the data of the reference image memory 31 in accordance with the mode set by the input means 60, and develops the display data in the video RAM 41. An operation program for the CPU 51 is stored in the control ROM 52. The work RAM 53 is a temporary storage memory that temporarily stores processing data of the CPU 51 and develops a work area that needs to be temporarily stored when executing a program.
[0017]
FIG. 2 is a perspective view showing an example of the external configuration of the device of the present invention. On the upper surface of the discrimination device main body 100, a display section of a liquid crystal display 43 and operation buttons (push button switches) 61a to 61e are provided. ing. On the front surface of the discrimination device main body 100, an IC card slot 32a for loading an IC card, an IC card ejection button 32b for ejecting an IC card, and a luminance for adjusting the luminance of a display image. An adjustment volume 62 is provided.
[0018]
FIG. 3 is a perspective view showing an example of the internal structure of the discrimination device main body 100, and is an internal structure diagram of the authenticity discrimination device of FIG. FIGS. 4A and 4B are side cross-sectional views of FIG. 3, which are side cross-sectional views as seen from the directions of arrows A and B, respectively. FIGS. 3 and 4A show, for convenience, the lateral width of the discriminating apparatus main body 100 as viewed in the direction A, which is smaller than the actual width (see FIG. 2). In the embodiment, the liquid crystal display 43 has a display unit large enough to accommodate a maximum of one sheet from the viewpoint of miniaturization and ease of observation.
[0019]
The internal structure will be described with reference to FIGS. Each device is stored in a rectangular parallelepiped light-shielding housing (hereinafter, referred to as a light-shielding case) 101. A display window 101A and a sample reading window 101B are provided on the upper surface and the bottom surface of the light shielding case 101, respectively, and a protective glass is inserted into each window.
[0020]
The light source 11 includes an infrared LED 11A that emits infrared light, a UV lamp (fluorescent lamp) 11B that emits ultraviolet light, and a lamp that emits monochromatic light (not shown). It is arranged so that it is irradiated to. As the UV lamp 11B, a cold cathode fluorescent lamp or a hot cathode fluorescent lamp coated with an ultraviolet fluorescent material is used, and a visible light cut filter film for removing a visible light spectrum contained in irradiation light is formed on the surface thereof. Have been. Note that, instead of forming the visible light cut filter film, a visible light cut filter may be provided below the UV lamp 11B. The light source driver 12 is fixed at a predetermined position (see FIG. 4) in the light shielding case 101. Switching of each light source 11 and turning on / off are performed by operating a "lamp" button 61e.
[0021]
The CCD camera 21 is fixedly provided with the image receiving surface facing downward at the upper center of the reading window 101B, and an optical low-pass filter 21A and a UV cut filter 21B are mounted on the image receiving surface. The optical low-pass filter 21A can remove moire fringes caused by the color mosaic filter on the image receiving surface, and the UV cut filter 21B can remove magenta fog due to ultraviolet rays passing through the magenta filter on the image receiving surface. Can be. Since the CCD camera 21 captures infrared light, an infrared cut filter used for a general color video camera is not mounted.
[0022]
An imaging lens 21C is mounted at a position separated from the image receiving surface of the CCD camera 21 by a predetermined distance, and an irradiation image of infrared light or the like projected on the reading window 101B is reflected by the imaging lens 21C by the imaging lens 21C. An image is formed on an image receiving surface. By passing the light through the imaging lens 21C, the chromatic aberration is corrected to such an extent that practically no focus movement occurs even when an infrared image or a visible light image is formed. Therefore, the light beam from the light source 11 such as the infrared LED 11A is switched. There is no need to adjust the focus each time.
[0023]
The liquid crystal panel 43A of the liquid crystal display 43 is disposed below the display window 101A, and the backlight unit 43B is disposed below the liquid crystal panel 43A. A white fluorescent lamp is used as a light source of the backlight unit 43B. The contrast adjustment by the backlight unit 43B is performed by a brightness adjustment volume 62 provided on the side surface of the light shielding case 101.
[0024]
FIG. 4B shows a board 50A on which a CPU 51, a control ROM 52 and a working RAM 53 constituting the control means 50 are mounted, and a video circuit section 40A such as a liquid crystal display controller 42 and a video RAM 41 constituting the display means 40. It is arranged at a predetermined position shown. The liquid crystal display controller 42 includes a circuit for performing color correction such as trapping a color signal (chroma signal) in a video signal. The circuit for trapping a color signal is a circuit for displaying an infrared image as a monochrome image on a liquid crystal panel when infrared light is used as irradiation light. In other words, when an infrared image is displayed as a color image, the image becomes reddish due to the reaction between the magenta and yellow pixels, and is very difficult to see. Therefore, the color signals are trapped and displayed as a monochrome image, thereby improving the visibility of the displayed image. The switching to the monochrome image is automatically performed in conjunction with the switching operation of the light source 11.
[0025]
In such a configuration, an operation procedure and an operation example of the authenticity discriminating apparatus of the present invention will be described with reference to a flowchart. First, the functions and operation procedures of the operation buttons 61a to 61e will be described with reference to the external view of FIG. 2 and the flowcharts of FIGS. Here, FIG. 9 shows an object selection procedure, FIG. 10 shows a display image switching procedure, and FIG. 11 shows an irradiation light switching procedure.
[0026]
"Select" button 61b: Selects an object (a banknote denomination, front and back). When the selection button 61b is pressed, "selection" is displayed on the upper right of the display screen 43A (FIG. 9: step S11). In this state, when the left and right arrow buttons 61d are pressed, the front and back of the display image change. Therefore, the front and back are selected by displaying the surface to be compared (step S12). Subsequently, a denomination is selected with the up and down arrow buttons 61d. Each time the up / down arrow button 61d is pressed, the display changes one after another, so that what is to be checked is displayed (step S13).
[0027]
"Display" button 61a: A button for instructing switching between superimposed display and side-by-side display, only display of a reference image (intrinsic image), or only display of a sample image (image of an object to be discriminated). In the flowchart, FIG. 10A shows an operation procedure in “two-image display” in which a reference image and a sample image are displayed in parallel or in an overlapping manner, and FIG. 10B shows a reference image or a sample image alone. The operation procedure for “single image display” is shown. In the initial state, two images are displayed. When the display button 61a is pressed, "display" is displayed on the upper right of the display screen 43A (FIG. 10 (A): steps S21 and S22). Set. Every time one of the up and down arrow buttons 61d is pressed on the display screen 43A, the display is repeatedly displayed in the order of overlap → parallel → overlap. (Step S23). In the two-image display state, the display is switched to the one-image display state by pressing the left and right arrow buttons 61d (FIG. 10B: step S33).
[0028]
In the one-image display state (FIG. 10B), pressing the left and right arrow buttons 61d selects only the reference image or only the sample image. On the display screen 43A, each time the left and right arrow buttons 61d are pressed, the reference image → the sample image → the reference image is cyclically displayed. In the one-image display state, the display is switched to the two-image display state by pressing the up / down arrow button 61d (steps S31 to S33). When the reference image is displayed in one-image display or two-image display, the type of "lamp" from which the image is obtained is displayed at the lower right of the display screen, and the lamp is selected.
[0029]
"Coordinate" button 61c: A button for instructing movement of the reference image. When the overlap display is selected by the display button 61a, when this button is pressed, “coordinates” are displayed on the upper right of the display screen 43A. Pressing the up / down arrow button 61d moves the reference image up / down, and pressing the left / right arrow button 61d moves the reference image left / right. When it is desired to move the sample image, the sample (banknote) below the device is moved.
"Arrow" button 61d: The operation changes according to the display of each function key. For items in which the selection target is displayed in a circular manner, the order is displayed in reverse order by the arrow button in the opposite direction.
[0030]
"Lamp" button 61e: A button for instructing switching of irradiation light. When the lamp button 61e is pressed, "lamp" is displayed on the upper right of the display screen (FIG. 11: steps S41, S42). Each time one of the up, down, left and right arrow buttons 61d is pressed, the type of irradiation light and on / off are switched in the order of off → infrared → off → UV lamp. The name of the lamp that is emitting light is displayed at the lower left of the display screen. In response to the selection operation of the irradiation light, the sample is irradiated with infrared light, ultraviolet light, or monochromatic light, and the display image (reference image and sample image) is automatically switched (step S43).
[0031]
The buttons for specifying the functions of “display”, “select”, “coordinates” and “lamp” function independently. That is, since the order of pressing the buttons is not determined, the buttons can be pressed at any time.
[0032]
Next, an example of the entire operation procedure will be described with reference to a flowchart of FIG.
First, the denomination of the sample, the front and back sides, and the type of irradiation light (lamp) are designated by the above operation procedure (step S51). Subsequently, when the display button 61a is pressed (step S52), "display" is displayed at the upper right of the screen (step S53), and by pressing the up / down button 61d, either "overlay display" or "parallel display" is performed. Is selected (steps S54 and S55).
[0033]
In the parallel display mode, the screen is divided into two right and left sides, and a sample image is displayed on the left and a reference image is displayed on the right. FIG. 5 shows a screen example when ultraviolet rays are used as irradiation light, and FIG. 8 shows a display example when infrared rays are used. The observer visually compares the sample image with the reference image to discriminate the authenticity of the sample. Here, in the side-by-side display mode, the entire surface of the bill is not displayed, so if it is desired to check a portion that is not displayed (the left portion of the bill in the example of FIG. 5), the coordinate button 61c, the up / down / left / right arrow buttons The display image is moved by the operation of 61d to adjust the display position of the reference image. In order to move the position on the sample side, the apparatus is shifted with respect to the bill.
[0034]
In the superimposed display mode, as shown in FIG. 6, the sample image and the reference image are overlapped and displayed. Here, "identity percentage display" 43a indicating the degree of coincidence between the sample image and the reference image is displayed at the lower center of the display screen. The observer superimposes images using the up, down, left, and right arrow buttons 61d in the coordinate mode so as to increase the number while looking at the identity percentage display 43a and looking at the images (step S57). In the superimposed display mode, different points are further emphasized and displayed as shown by the solid line in FIG. It is easier to perform the superimposed display operation by first turning on the UV lamp after designating and positioning the infrared lamp (step S58).
[0035]
Next, an operation example of the apparatus of the present invention will be described with reference to the flowcharts of FIGS.
When the power of the discrimination device main body 100 is turned on, the CPU 51 performs initialization processing such as initialization of the work RAM 53, and then checks input operation information from the input means 60 to determine the content of the instruction. If the instruction to select a reference image (press the selection button 61b) (step S101), the processing mode is set to the selection mode, and "selection" is displayed at a predetermined position on the display screen 43A. Then, each time the up / down arrow button 61d is pressed, the denomination is circulated and displayed in the direction, and each time the left / right arrow button 61d is pressed, the front and back sides are circulated and the discrimination target is selected. Then, the reference data of the selected object to be discriminated is read from the intrinsic image storage means 30, the reference image is displayed, and the type of "lamp" from which the image is obtained is displayed (step S102).
[0036]
On the other hand, if the instruction is a display mode switching instruction (depression of the display button 61a) (step S103), the processing mode is set to the display mode, and "display" is displayed at a predetermined position on the display screen 43A. Each time the up / down arrow button 61d is pressed, “overlap” and “parallel” are cyclically displayed, and a selection is made between superimposed display and parallel display. If the superimposed display is selected, the processing mode is set to the superimposed display mode, the data of the reference image and the data of the sample image are combined, and are superimposed and displayed as shown in FIG. Here, when displaying the reference image, for example, the right end thereof is displayed near the right end of the display screen 43A. At the time of the superimposed display, highlighting of a different portion and “identity percentage display” indicating the degree of coincidence (or the degree of non-coincidence) are performed by processing described later.
[0037]
If the parallel display is selected, the processing mode is set to the parallel display mode, and the sample image and the reference image are displayed side by side on the left and right sides of the screen. Here, when displaying the reference image, as shown in FIG. 5, for example, a portion from the right end to a portion that fits into the divided portion of the screen is displayed. If the left and right arrow buttons 61d are pressed in the two-image display state of the parallel display mode and the overlap display mode, the processing mode is set to the single image display mode of the reference image or the sample image. The sample image is displayed cyclically, and either one is selected. If the up / down arrow button 61 has been pressed in the single display mode, the state is switched to the two-image display state (step S104).
[0038]
On the other hand, if the instruction content is an illumination light switching instruction (pressing of the lamp button 61e) (step S105), the processing mode is set to the lamp switching mode, and "lamp" is displayed at a predetermined position on the display screen 43A. Each time one of the up, down, left, and right arrow buttons 61d is pressed, a circular display such as “OFF” → “IR” → “OFF” → “UV lamp” → “OFF” → “monochromatic light” is performed. , The type of irradiation light and ON / OFF are selected. The CPU 51 sends a switching command (lighting instruction of the light source) to the light source driver 12 in response to the irradiation light switching instruction, and switches the light source 11 to irradiate the sample 1 with the irradiation light. Here, the switching of the light source 11 is performed by turning off the light source 11 which is currently on and turning on the light source 11 indicated by the switching command. However, in the case of the UV lamp, the light source 11 is not immediately turned on. The lighting start timing is adjusted by the following processing.
[0039]
When the irradiation with the UV lamp is instructed (step S106), the CPU 51 checks whether or not a predetermined time (about 5 seconds) has elapsed since the arrow button 61d is no longer pressed, and if the predetermined time has elapsed. For example, a switching command is sent to the light source driver 12 to turn on the UV lamp. However, if "UV lamp" is selected and a function button other than the arrow button 61d is pressed, the UV lamp is turned on at that time.
[0040]
This lighting control is control for avoiding a reduction in the life of the UV lamp. That is, it takes time to turn on the UV lamp, and the arrow button 61d may be depressed many times unnecessarily. Therefore, if the light is turned on immediately by pressing the arrow button 61d, the number of times of turning on / off increases and the life is affected. Therefore, unnecessary turning off / on of the UV lamp is avoided by the above lighting control (step). S107, S108).
[0041]
When the switching of the light source 11 is completed, the CPU 51 reads the sample image data from the image frame memory 23, reads the reference image corresponding to the irradiation light from the reference image memory 31, and creates display data in the display mode. I do. Then, the display data is developed in the video RAM 41, and the image with the switched irradiation light is displayed on the liquid crystal display 43 via the liquid crystal display controller 42. At this time, a display such as "fluorescence" or "infrared" indicating the type of irradiation light is performed (step S109).
[0042]
On the other hand, if the instruction content is an instruction for coordinate alignment (depression of the display button 61c) (step S110), the processing mode is set to the coordinate mode, and "coordinate" is displayed at a predetermined position on the display screen 43A. If the up / down / left / right button 61d has been pressed, the coordinate position of the reference image moved in the direction is determined, and the reference image after movement and the sample image are combined and displayed. Then, the process returns to step S101, and the above operation is repeated (step S111).
[0043]
Next, the processes of “identity percentage display” and “differential portion highlighting” in the overlapping display mode will be described with reference to the flowchart of FIG. It should be noted that these different data display processes are performed at regular intervals after the overlap display is selected and before transition to another display mode.
[0044]
In the case of the overlap display mode, the CPU 51 compares the image data of the reference image and the image data of the sample image for each pixel, and, for example, determines the authenticity of a portion where a bill is considered to exist (a portion where the pixel value is equal to or larger than a threshold value). The percentage of the identity (or inconsistency) is calculated with the highest pixel value of the object as 100. Here, the pixel information to be compared is density information in the case of a monochrome image, and is color information and brightness information in the case of a color image (step S121). Then, the calculated percentage value of the identity is displayed at the lower center of the display screen. If the reference image of the true sheet is selected and displayed, the identity percentage display indicates the percentage of the authentic sample, and the reference image of the false sheet is selected and displayed. If so, the percentage indicates that the sample is fake (step S122).
[0045]
In addition, the CPU 51 checks whether or not the comparison value for each pixel is equal to or less than a predetermined value (for example, 90% or less in terms of percentage) at the time of the comparison processing in step S121. It is determined that they are different (step S123), and the different parts are highlighted and displayed as shown in FIG. This highlighting is performed by changing the density, display color, and the like of the pixel to a value that cannot exist in the reference data (step S124).
[0046]
In the present embodiment, the authenticity discriminating apparatus is configured as an integrated type (all-in-one type). However, a communication unit is added to connect to an external display unit (a personal computer, a television, or the like). By using the display as a display unit, a more easily viewable screen can be obtained. Further, by using a storage device of an external personal computer via an interface means to which an IC card as the reference image memory 31 of the present embodiment is added, a larger amount of data can be used. Needless to say, the input means in this case can be easily changed to key operation of an external personal computer. Further, in the present embodiment, the light emitting means has been described as an example of a configuration including three light sources of infrared light, ultraviolet light, and single light, but a plurality of light sources having different emission wavelengths may be provided. Furthermore, although the case where the irradiation light is emitted from one light source has been described as an example, the irradiation light may be emitted from a plurality of light sources by combining a plurality of light sources.
[0047]
【The invention's effect】
As described above, according to the authenticity discriminating apparatus of the present invention, when the target object is a real object, it reacts to the invisible light, and the visible light reflected by the reflected light has a wavelength different from that when the normal light is applied. It is possible to display the captured data, compare it with reference data set in advance, and highlight and display the differences. Therefore, just by looking at the display screen, it is possible to determine the authenticity of the counterfeit banknote without any knowledge. In addition, since the target object is not limited to the genuine ones of the banknotes and certificates, it may be a forged one, so that it can be used for a search for a specific forged ticket.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of the authenticity discriminating apparatus of the present invention.
FIG. 2 is a perspective view showing an example of an external configuration of the device of the present invention.
FIG. 3 is a perspective view showing an example of the internal structure of the device of the present invention.
FIG. 4 is a side sectional view of FIG. 3;
FIG. 5 is a diagram showing a first display example in the device of the present invention.
FIG. 6 is a diagram showing a second display example in the device of the present invention.
FIG. 7 is a diagram showing a third display example in the device of the present invention.
FIG. 8 is a diagram showing a fourth display example in the device of the present invention.
FIG. 9 is a flowchart illustrating a first example of an operation procedure in the apparatus of the present invention.
FIG. 10 is a flowchart for explaining a second example of the operation procedure in the device of the present invention.
FIG. 11 is a flowchart illustrating a third example of the operation procedure in the apparatus of the present invention.
FIG. 12 is a flowchart illustrating an example of an overall operation procedure in the apparatus of the present invention.
FIG. 13 is a flowchart for explaining an operation example of the apparatus of the present invention.
FIG. 14 is a branch diagram of the flowchart in FIG. 13;
FIG. 15 is an external perspective view illustrating an example of a conventional authenticity discriminating apparatus.
[Explanation of symbols]
5 Objects to be identified
10 Light emitting means
11 Light source
12 Light source driver
20 Image receiving means
21 CCD camera
22 A / D converter
23 Image frame memory
30 Intrinsic image storage means
31 Reference image memory
32a IC card slot
32b IC card removal button
40 display means
41 Video RAM
42 LCD controller
43 LCD display
43A display screen (liquid crystal panel)
50 control means
51 CPU
52 Control ROM
53 Working RAM
60 input means
61 Operation buttons
61a "Display" button
61b "Select" button
61c "Coordinate" button
61d "arrow" button
61e "Lamp" button
62 Brightness adjustment volume
100 Discrimination device body
101 Shading case

Claims (2)

A true or false discrimination can be performed by placing the disc on a discrimination target and irradiating the light, performing image processing on the light reflected from the discrimination target, and visually observing an image displayed on a display unit. In the authenticity discriminating apparatus, a light emitting unit that emits a specific wavelength, an image receiving unit that converts light reception of a specific frequency into an electric signal, an input unit that receives a display mode setting, and an image of an intrinsic material stored in advance Intrinsic image storage means, display means for displaying the result of identification, control for processing difference data between the object to be identified and the image of the intrinsic substance stored in the intrinsic image storage means and displaying the difference data on the display means And a means for discriminating authenticity. The authenticity discriminating apparatus according to claim 1, wherein the intrinsic material includes at least one of a true sheet and a false sheet.

Images