JP2015011459A - Reader, read threshold setting method, and read threshold setting program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To optimally set a mark card read threshold.SOLUTION: A reader for a mark card including an entry column for entering a mark as one of a plurality of entry columns printed in dropout color, comprises: a multivalued image data acquisition unit dividing a plurality of entry frames in the entry column into a plurality of groups, and acquiring multivalued image data on the plurality of entry frames for every group; a read threshold acquisition unit binarizing the multivalued image data on each group a plurality of times while changing values of a binarization threshold, and acquiring read thresholds of the respective groups; and a setting unit setting a read threshold of the mark card on the basis of the read thresholds of the plurality of groups.

Description

  The present invention relates to a mark card reader having an entry field in which a mark is entered in one of a plurality of entry frames printed by a dropout color.

  Conventionally, in public competitions such as horse racing, bicycle racing, boat racing, auto racing, etc., a mark card (also referred to as a mark sheet) having an entry field in which a mark is entered in one of a plurality of entry frames printed in dropout color. Readers are used.

  In such a reading apparatus, multi-value image data of a mark card is acquired, and the multi-value image data is binarized using a predetermined reading threshold (binarization threshold), thereby printing in dropout color. The presence / absence of a mark in each written entry frame is detected. For example, if the part of the entry frame where the mark is not entered is set to “0” by binarization, no mark is detected in the entry frame, and the part of the entry frame where the mark is entered is binary. If the value is set to “1”, the presence of a mark is detected in the entry frame.

  In such a reader, in consideration of user convenience, etc., the density of the entry frame printed by the dropout color can be handled as high as possible (dense), and the mark of the entered mark can be handled. It is required that the density can be read as low as possible (thin).

The following devices are known with respect to mark card readers.
For example, a reader that processes mark cards printed in various drop-out colors at high speed by identifying the drop-out color of the mark card from an identification code for identifying the drop-out color printed on the mark card Is known (see Patent Document 1).

JP 2012-133680 A

  By the way, it is known that there are a plurality of types of mark cards handled by the reading apparatus, and even if they are the same type, the print density of the dropout color varies for each production lot. For this reason, the reading threshold of the mark card in the reading apparatus is set based on the one having the highest dropout color print density in consideration of the above-mentioned requirements in consideration of variations in all kinds of mark cards to be handled. When the reading threshold is set in this way, thereafter, as a general rule, the reading of the mark card is performed using the reading threshold uniformly with respect to the mark cards of all types of all handling lots handled. It has been broken.

  However, this may be the optimum reading threshold for a specific type of production card of a certain type, but it may be the optimum reading threshold for other types or lots of production. There was a problem that it was not.

  In view of the above circumstances, an object of the present invention is to provide a reading apparatus, a reading threshold setting method, and a reading threshold setting program that can optimally set a reading threshold of a mark card.

  According to one aspect of the apparatus, there is provided a mark card reader having an entry field in which a mark is entered in one of a plurality of entry frames printed by a dropout color, Dividing the input frame into a plurality of groups and acquiring the multi-value image data of the plurality of input frames for each group, and binarization for the multi-value image data of each group A reading threshold value acquisition unit that acquires the reading threshold value of each group by performing a plurality of times while changing the threshold value, and a setting unit that sets the reading threshold value of the mark card based on the reading threshold value of the plurality of groups, including.

  According to one aspect of the method, there is provided a reading threshold value setting method for setting a reading threshold value of a mark card having an entry field in which a mark is entered in one of a plurality of entry frames printed by a dropout color, Dividing the plurality of entry frames in the entry field into a plurality of groups, obtaining multi-value image data of the plurality of entry frames for each group, and binarizing the multi-value image data of each group The computer executes a process of performing a plurality of times while changing the threshold value, obtaining the reading threshold value of each group, and setting the reading threshold value of the mark card based on the reading threshold value of the plurality of groups.

  According to one aspect of the program, there is provided a reading threshold value setting program for setting a reading threshold value of a mark card having an entry field in which a mark is written in one of a plurality of entry frames printed by a dropout color, Dividing the plurality of entry frames in the entry field into a plurality of groups, obtaining multi-value image data of the plurality of entry frames for each group, and binarizing the multi-value image data of each group The processing is performed a plurality of times while changing the value of the threshold value, the reading threshold value of each group is acquired, and the processing for setting the reading threshold value of the mark card based on the reading threshold value of the plurality of groups is executed by the computer.

  The disclosed apparatus, method, and program have an effect that a mark card reading threshold can be set optimally.

It is a figure which shows the structural example of the totalizer system containing a mark card reader. It is a figure which shows the hardware structural example of the voting ticket issuing apparatus containing a mark card reader. It is a figure which shows an example of the functional block of the voting ticket issue apparatus containing a mark card reader. It is a flowchart which shows the reading threshold value setting operation | movement performed with the mark card reader included in a betting ticket issuing device. It is a figure which shows an example of a voting card.

Hereinafter, a reading apparatus according to an embodiment will be described with reference to the drawings.
The reader according to the present embodiment is, for example, a mark card reader included in a totalizer system. The totalizer system is a system that manages the issuance of voting tickets, the display and counting of odds, the calculation of dividends, the refund of voting tickets, etc. in public competitions such as horse racing, bicycle racing, boat racing, or auto racing.

  FIG. 1 is a diagram illustrating a configuration example of a totalizer system including a mark card reader according to the present embodiment.

  As shown in FIG. 1, the totalizer system 1000 includes a voting ticket issuing device 100 including a mark card reading device according to the present embodiment, a management device (host computer) 200, and a network 300.

  The voting ticket issuing device 100 includes an operation status display window 101, a voting ticket slot 102, a voting ticket slot 103, a voting card slot 104, a bill slot 105, a coin slot 106, a coin slot 107, and a display. 108 and a touch panel 109 are provided.

  The operation status display window 101 displays in the voting ticket issuing device 100 whether voting ticket issuance is being accepted or issuance is stopped, and whether voting ticket withdrawal is being accepted or issuance is being suspended. To do.

  The voting ticket slot 102 is a slot for voting tickets to be refunded. The voting ticket discharge port 103 is a discharge port for the issued voting ticket. The voting card insertion / extraction port 104 is an insertion port for a voting application mark card (hereinafter referred to as a voting card), and is also an outlet for a voting card to be returned. The voting card is a mark card having an entry field in which a mark is entered in one of a plurality of entry frames printed in dropout color.

  The bill insertion / discharge port 105 is a bill input port, and is also a discharge port for a bill to be returned or a bill. The coin slot 106 is a coin slot. The coin outlet 107 is an outlet for coins to be returned or changed.

  The display 108 is disposed below the touch panel 109 and displays information such as operation guidance, race guidance, and voting contents of a voting card. The display 108 is a liquid crystal display, for example.

  The touch panel 109 is a transmissive touch panel, and is operated when various inputs and voting contents are corrected. Information displayed on the display 108 can be seen by a voter through the touch panel 109. The voter can perform a touch operation on the touch panel 109 while viewing the information displayed on the display 108.

  In the voting ticket issuing device 100, the voting ticket slot 102 and the voting ticket outlet 103 may be integrated. Further, the coin insertion port 106 and the coin discharge port 107 may be integrated. Also, the voting card insertion / extraction port 104 may be configured separately, such as a voting card insertion port and a voting card discharge port. Moreover, it is good also considering the banknote insertion discharge port 105 as a different body structure like a banknote insertion port and a banknote discharge port.

  The management device 200 is a host computer that communicates with the voting ticket issuing device 100 via the network 300 and manages voting ticket issuance, voting ticket refund, and the like performed by the voting ticket issuing device 100. In addition, the management apparatus 200 performs odds calculation, dividend calculation, and the like.

  The network 300 is, for example, a network such as a LAN (Local Area Network), a WAN (Wide Area Network), and the Internet, or a network in which they are mixed.

  FIG. 2 is a diagram illustrating a hardware configuration example of the voting ticket issuing apparatus 100 including the mark card reading apparatus according to the present embodiment.

  As shown in FIG. 2, the voting ticket issuing apparatus 100 includes a control unit 111, a display 108, a manager display 112, a touch panel 109, a manager touch panel 113, a voting card reading unit 114, a bill circulation unit 115, and a coin circulation. A unit 116, a voting ticket printing unit 117, and a withdrawal voting ticket reading unit 118 are provided. Note that the mark card reading device according to the present embodiment includes a control unit 111 and a voting card reading unit 114.

  The control unit 111 includes a central processing unit (CPU) 120, a random access memory (RAM) 121, a hard disk drive (HDD) 122, a communication interface 123, a graphic processing unit 124, and an input / output interface 125. Connected through. The control unit 111 is also an example of a computer.

  The CPU 120 controls the overall operation of the voting ticket issuing device 100. The RAM 121 temporarily stores at least part of an OS (Operating System) program and application programs executed by the CPU 120. The RAM 121 stores various data necessary for processing by the CPU 120 (for example, voting data). The HDD 122 stores the OS and application programs.

  The communication interface 123 is connected to the network 300, and transmits and receives data (various information, messages, notifications, etc.) to and from the management device 200, for example.

  The OS program and application program executed by the CPU 120 may be stored in, for example, the RAM 121 and executed by the CPU 120 from an external device (not shown) via the network 300 and the communication interface 123. In addition, these programs and the like may be stored in a portable recording medium 119 described later, and stored in, for example, the RAM 121 via the portable recording medium interface and input / output interface 125 described later, and executed by the CPU 120.

  The graphic processing unit 124 is connected to a display 108 and an administrator display 112. The graphic processing unit 124 displays various information on the screen of the display 108 and the manager display 112 under the control of the CPU 120. The manager display 112 is a display for managers provided on the back side of the voting ticket issuing apparatus 100, and is disposed below the manager touch panel 113. The manager display 112 is, for example, a liquid crystal display.

  Connected to the input / output interface 125 are a touch panel 109, an administrator touch panel 113, a voting card reading unit 114, a bill circulation unit 115, a coin circulation unit 116, a voting ticket printing unit 117, and a refund voting ticket reading unit 118. The input / output interface 125 can be connected to a portable recording medium interface (not shown) that can write and read information to and from the portable recording medium 119.

  The input / output interface 125 includes a touch panel 109, an administrator touch panel 113, a voting card reading unit 114, a bill circulation unit 115, a coin circulation unit 116, a voting ticket printing unit 117, a refund voting ticket reading unit 118, and a portable recording medium interface. The transmitted signal is transmitted to the CPU 120 via the bus 126. In addition, the input / output interface 125 sends control signals sent from the CPU 120 to the corresponding units via the bus 126 (touch panel 109, administrator touch panel 113, voting card reading unit 114, bill return unit 115, coin return unit. 116, voting ticket printing unit 117, withdrawal voting ticket reading unit 118, or portable recording medium interface).

  The administrator touch panel 113 is a touch panel for administrators. The administrator touch panel 113 is a transmissive touch panel, and is operated when various inputs are made by the administrator. Information displayed on the manager display 112 is visible through the manager touch panel 113 and visible to the manager. The administrator can perform a touch operation on the administrator touch panel 113 while viewing the information displayed on the administrator display 112.

  The voting card reading unit 114 is a unit that reads voting contents from a voting card. For example, the presence / absence of a mark in each entry frame printed in dropout color is detected. The voting card reading unit 114 is also a unit used when setting a voting card reading threshold, as will be described in detail later.

  The banknote reflux unit 115 receives banknotes, discriminates the authenticity of banknotes, stores banknotes, returns banknotes, and discharges bills. The coin recirculation unit 116 receives a coin, discriminates the authenticity of the coin, stores the coin, returns the coin, and discharges the change. The voting ticket printing unit 117 prints the voting contents and issues a voting ticket. The withdrawal voting ticket reading unit 118 accepts the voting ticket and reads the contents of the vote.

  In the betting ticket issuing apparatus 100, the control unit 111 may include a module such as an FPGA (Field Programmable Gate Array) or a DSP (Digital Signal Processor). In this case, the control unit 111 includes nonvolatile memory (for example, EEPROM (Electrically Erasable and Programmable Read Only Memory), flash memory, flash memory type memory card, etc.) and stores module firmware. Firmware can be written in the nonvolatile memory via the portable recording medium 119 or the communication interface 123. As described above, the control unit 111 can update the firmware by rewriting the firmware stored in the nonvolatile memory.

  FIG. 3 is a diagram illustrating an example of functional blocks of the voting ticket issuing apparatus 100 including the mark card reading apparatus according to the present embodiment.

  As shown in FIG. 3, the voting ticket issuing device 100 includes a control unit 131, a bill appraisal unit 132, a coin appraisal unit 133, a voting ticket issuing unit 134, a voting ticket reading unit 135, and an administrator side screen unit as functional blocks. 136, a user-side screen unit 137, and a voting card reading unit 138.

  These functional blocks correspond to the hardware configuration of the voting ticket issuing apparatus 100 shown in FIG. 2 as follows. The control unit 131 corresponds to the control unit 111. The bill validating unit 132 corresponds to the bill reflux unit 115. The coin appraisal unit 133 corresponds to the coin recirculation unit 116. The betting ticket issuing unit 134 corresponds to the betting ticket printing unit 117. The voting ticket reading unit 135 corresponds to the payout voting ticket reading unit 118. The administrator-side screen unit 136 corresponds to the administrator display 112 and the administrator touch panel 113. The user side screen unit 137 corresponds to the display 108 and the touch panel 109. The voting card reading unit 138 corresponds to the voting card reading unit 114.

Here, the voting card reading unit 138 will be described in more detail.
The voting card reading unit 138 includes a card scanning unit 141, a binarization processing unit 142, a comparison determination unit 143, and a threshold setting unit 144.

  The card scanning unit 141 includes, for example, an image scanner, and acquires multi-value image data (for example, grayscale data of a predetermined gradation) of a voting card inserted into the voting card insertion / exit port 104. Further, at the time of the reading threshold setting operation described later, a plurality of entry frames in a specific entry field of the voting card inserted into the voting card insertion / exit port 104 are divided into a plurality of groups, and the multi-value image data of the plurality of entry frames is divided. For each group. Here, the specific entry field may be any entry field as long as a mark is entered in one of a plurality of entry frames printed by the dropout color.

  The binarization processing unit 142 binarizes the multi-value image data. In addition, during the reading threshold setting operation described later, binarization of the multi-valued image data of each group obtained by the card scanning unit 141 is performed a plurality of times while changing the value of the binarization threshold to read each group. Get the threshold.

  The comparison determination unit 143 determines whether or not the difference between the reading threshold values of the two groups obtained by the binarization processing unit 142 exceeds a predetermined value during a reading threshold value setting operation described later.

  The threshold value setting unit 144 sets the reading threshold value of the voting card based on the reading threshold values of a plurality of groups obtained by the binarization processing unit 142 during the reading threshold value setting operation described later. For example, when the threshold setting unit 144 determines that the difference between the reading threshold values of two groups exceeds a predetermined value, the reading threshold value having the lower density of the reading threshold values of the two groups is read by the voting card. Set as threshold.

  Next, the reading threshold value setting operation performed by the mark card reading device according to the present embodiment included in the voting ticket issuing device 100 will be described.

  This operation is an operation for setting an optimum reading threshold for the target voting card, and the CPU 120 reads and executes an application program (including a reading threshold setting program) stored in the HDD 122. Done.

  Moreover, this operation | movement is performed for every kind of voting card which the voting ticket issuing apparatus 100 handles, for example, when operating the voting ticket issuing apparatus 100 for the first time. For example, when handling four types of voting cards, it is performed for each type of voting card. After that, for example, when the voting ticket issuing apparatus 100 in operation starts handling voting cards of different production lots, the voting card is issued to the voting cards. Further, for example, when the number of types of voting cards handled by the voting ticket issuing apparatus 100 is increased (or changed), it is performed for each type of the increased (or changed) type.

  FIG. 4 is a flowchart showing the reading threshold setting operation. FIG. 5 is a diagram illustrating an example of a voting card. Here, as an example, the target voting card will be described as the voting card 400 shown in FIG.

  In this operation, for example, the administrator gives an instruction to start the reading threshold setting operation via the administrator-side screen unit 136, and the voting card 400 in which a mark is entered in one entry frame in a specific entry field is displayed. When it is inserted into the voting card insertion / exit port 104, it starts. Here, as an example, the specific entry field is the “race number” entry field 401, and the entry frame in which the mark is entered is the “8” entry frame.

  When this operation starts, first, the card scanning unit 141 divides a plurality of entry boxes in a specific entry field (“race number” entry field 401) of the voting card 400 into a plurality of groups, and one of the groups is divided. The multi-value image data of the entry frame at is acquired (S102). Here, the plurality of entry frames in the “race number” entry field 401 are twelve entry frames “1” to “12”. In addition, here, as an example, it is assumed that the plurality (12) of entry boxes are divided into two groups 402 and 403, and one of these groups is referred to as a group 402. Accordingly, here, the 12 entry frames in the “race number” entry field 401 of the voting card 400 are divided into two groups 402 and 403, and the entry frames (“1” to “3” in one group 402) are divided. ”And“ 7 ”to“ 9 ”) are obtained.

  After S102, the binarization processing unit 142 performs binarization on the multivalued image data of the group 402 obtained in S102 a plurality of times while changing the value of the binarization threshold, and acquires the reading threshold. (S104, S106, S108). More specifically, first, a binarization threshold value corresponding to the lowest density among a plurality of binarization threshold values prepared in advance is set as a variable threshold value, and S104 is performed. That is, using the variable threshold value, binarization is performed on the multivalued image data of the entry frame in the group 402 obtained in S102 (S104). Subsequently, it is determined whether or not either the entry frame in the group 402 or the mark entered in the entry frame can be read (S106). Here, when the determination result is Yes (when either or both of the entry frame in the group 402 and / or the mark entered in the entry frame can be read), the variable threshold value is converted into a plurality of binaries as described above. The threshold value is changed to the binarization threshold value corresponding to the next highest density of the current variable threshold value, and the process returns to S104. On the other hand, when the determination result of S106 is No (when neither the entry frame in the group 402 or the mark entered in the entry frame can be read), the current variable threshold value is set to the reading threshold value (A) of the group 402. Is determined (S108).

  Subsequently, the card scanning unit 141 acquires multi-value image data of entry frames (entry frames of “4” to “6” and “10” to “12”) in the remaining group 403 (S110).

  After S110, the binarization processing unit 142 performs binarization on the multi-valued image data of the group 403 obtained in S110 in the same manner as S104, S106, and S108 described above, and changes the value of the binarization threshold. The reading threshold value is acquired a plurality of times (S112, S114, S116). More specifically, first, the binarization threshold value corresponding to the lowest density among the plurality of binarization threshold values prepared in advance is set as the variable threshold value, and S112 is performed. That is, using the variable threshold value, binarization is performed on the multivalued image data of the entry frame in the group 403 obtained in S110 (S112). Subsequently, it is determined whether or not either the entry frame in the group 403 or the mark entered in the entry frame can be read (S114). Here, when the determination result is Yes (when either or both of the entry frame in the group 403 and the mark entered in the entry frame can be read), the variable threshold value is converted into a plurality of binaries as described above. The threshold value is changed to the binarization threshold value corresponding to the next highest density of the current variable threshold value, and the process returns to S112. On the other hand, when the determination result of S114 is No (when neither the entry frame in the group 403 nor the mark entered in the entry frame can be read), the current variable threshold value is set to the reading threshold value (B) of the group 403. Is determined (S116).

  Subsequently, the comparison determination unit 143 determines whether or not the difference between the reading threshold (A) determined in S108 and the reading threshold (B) determined in S116 exceeds a predetermined value (C) (S118). ).

  Here, when the determination result is No, the voting card 400 is returned to the voting card insertion / ejection port 104 as the reading threshold value of the voting card 400 cannot be set (S120). The case where the determination result in S118 is “No” is, for example, when the density of the mark entered in the “race number” entry column 401 of the voting card 400 is low, or in the first place the “race number” entry column. A case where a mark is not entered in 401 is considered. Alternatively, for example, a case where a mark is entered in any of the groups 402 and 403 in the “race number” entry field 401 of the voting card 400 may be considered.

  On the other hand, if S118 is Yes, the threshold setting unit 144 determines whether the density corresponding to the reading threshold (A) determined in S108 is higher than the density corresponding to the reading threshold (B) determined in S116. (S122). Here, when the determination result is Yes, the threshold setting unit 144 sets the reading threshold (B) determined in S116 as the reading threshold of the voting card 400 (S124). On the other hand, if the determination result in S122 is No, the threshold setting unit 144 sets the reading threshold (A) determined in S108 as the reading threshold for the voting card 400 (S126). Thus, the reading threshold value with the lower density of the reading threshold value (A) and the reading threshold value (B) is set as the reading threshold value of the voting card. As a result, an optimal reading threshold is set for the voting card 400 (a voting card of the same type as the voting card 400).

  Here, it is assumed that a mark is entered in the entry box of “8” in the group 402 of the entry field 401 of the “race number” of the voting card 400 (assuming that a mark of appropriate density is entered). The determination result in S118 is Yes, and the determination result in S120 is also Yes, and the reading threshold value (B) determined in S116 is set as the reading threshold value of the voting card 400.

  When the reading threshold is set in this way, thereafter, the mark is read from the same type of voting card as the voting card 400 using the reading threshold. Specifically, first, multi-value image data of the voting card is acquired, and the multi-value image data is binarized using the reading threshold value. As a result, for example, the entry frame portion is “1”. If there is a mark, the presence of a mark in the entry frame is detected. If the portion of the entry frame is set to “0”, it is detected that there is no mark in the entry frame. Here, the case where the portion of the entry frame is set to “1” is a case where the density of the entry frame portion is equal to or higher than the density corresponding to the reading threshold value. "Is a case where the density of the portion of the entry frame is lower than the density corresponding to the reading threshold.

  When the voting ticket issuing apparatus 100 is operated for the first time, if the above-described reading threshold setting operation is performed for each type of voting card handled by the voting ticket issuing apparatus 100, a reading threshold is set for each type. The In this case, when a user (voter) subsequently inserts a voting card into the voting card insertion / exit port 104, the mark is read from the voting card using a reading threshold value corresponding to the type of the voting card. Is called. Here, the voting card type is identified by, for example, the voting card reading unit 138 reading an identification code printed in advance on the voting card. In addition, when the voting ticket issuing apparatus 100 is in operation, when the handling of a voting card of the same type as before but with a different production lot is started, the above-described reading threshold value setting operation is performed on the voting card. When this is done, the reading threshold for the same type of voting card as that voting card is reset (updated). In addition, when the number of types of voting cards to be handled is increased (or changed) during the operation of the voting ticket issuing apparatus 100, the above-described reading threshold value setting operation is performed for each type of increase (or change). When this is done, a reading threshold for each type is additionally set.

  As described above, according to the mark card reader according to the present embodiment, it is possible to optimally set the voting card reading threshold handled by the voting ticket issuing apparatus 100.

  Further, by changing the firmware and the program, the existing apparatus can be used as it is, and the present invention can be easily applied.

  In the present embodiment, in the reading threshold value setting operation described with reference to FIGS. 4 and 5 described above, the specific entry field in the voting card 400 is the entry field 401 for the “race number”. Any of the entry fields in which a mark is entered in one of a plurality of entry frames printed in a dropout color, such as a “separate” entry field or a “venue” entry field, may be used.

  In the reading threshold value setting operation described with reference to FIGS. 4 and 5 described above, the 12 entry frames in the “race number” entry field 401 are divided into two groups 402 and 403. You may divide into the above groups. In this case, for each group, the processing similar to S102, S104, S106, S108 (or S110, S112, S114, S116) is performed to determine the reading threshold value of each group, and the reading threshold values of two groups of them are determined. When the difference between them exceeds a predetermined value (C), the reading threshold value with the lower density of the reading threshold values of the two groups may be set as the reading threshold value for the voting card.

  Also, the reading threshold value setting operation described with reference to FIGS. 4 and 5 described above may be performed every time a user (voter) inserts a voting card into the voting card insertion / extraction port 104, for example. Good. In this case, when a voting card is inserted into the voting card insertion / discharge port 104, first, a reading threshold setting operation is performed to set a reading threshold for the voting card, and then the set reading threshold is set. The voting card is read (reading of the mark from the voting card).

  Although the present embodiment has been described by taking a voting ticket issuing device for public competitions including a mark card reader as an example, a voting ticket vending machine is also possible. Further, the present invention is not limited to the unmanned aircraft (automatic sale device, automatic payment device), and can be realized in a manned device.

  Further, the assumed competition includes public competitions such as horse racing, bicycle racing, boat racing, and auto racing. Of course, it may be other than public competition. For example, it can be realized for a lottery (Numbers 3, Mini Lotto, Lotto 6, etc.), a sports lottery, and the like.

  Although the embodiment has been described above, the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 100 Voting ticket issue apparatus 101 Operation status display window 102 Voting ticket slot 103 Voting ticket slot 104 Voting card slot 105 Banknote slot 106 106 Coin slot 107 Coin slot 108 Display 109 Touch panel 111 Control unit 112 Administrator Display 113 Manager Touch Panel 114 Voting Card Reading Unit 115 Banknote Recirculation Unit 116 Coin Recirculation Unit 117 Voting Ticket Printing Unit 118 Refund Voting Ticket Reading Unit 119 Portable Recording Medium 120 CPU
121 RAM
122 HDD
123 communication interface 124 graphic processing unit 125 input / output interface 126 bus 131 control unit 132 bill appraisal unit 133 coin appraisal unit 134 voting ticket issuing unit 135 voting ticket reading unit 136 administrator side screen unit 137 user side screen unit 138 voting card reading unit 141 Card Scanning Unit 142 Binarization Processing Unit 143 Comparison Judging Unit 144 Threshold Setting Unit 200 Management Device 300 Network 400 Voting Card 401 Entry Box 402, 403 Group 1000 Totalizer System

Claims (4)

A mark card reader having an entry field in which a mark is entered in one of a plurality of entry frames printed by a dropout color,
A multi-value image data acquisition unit that divides the plurality of entry frames in the entry field into a plurality of groups and acquires multi-value image data of the plurality of entry frames for each group;
Binarization for multi-value image data of each group is performed a plurality of times while changing the value of the binarization threshold, and a reading threshold value acquisition unit for acquiring the reading threshold value of each group;
A setting unit that sets a reading threshold of the mark card based on the reading thresholds of the plurality of groups;
A reading apparatus comprising: A determination unit for determining whether or not a difference between reading threshold values of two groups out of the plurality of groups exceeds a predetermined value;
When the determination unit determines that the difference between the reading threshold values of the two groups exceeds a predetermined value, the setting unit determines the reading threshold value with the lower density of the reading threshold values of the two groups as described above. Set as mark card reading threshold,
The reading apparatus according to claim 1. A reading threshold value setting method for setting a reading threshold value of a mark card having an entry field in which a mark is written in one of a plurality of entry frames printed by a dropout color,
Dividing the plurality of entry frames in the entry field into a plurality of groups to obtain multi-value image data of the plurality of entry frames for each group;
Binarization for multi-valued image data of each group is performed a plurality of times while changing the value of the binarization threshold to obtain the reading threshold of each group,
Setting a reading threshold of the mark card based on the reading threshold of the plurality of groups;
The computer performs the process,
The reading threshold value setting method characterized by the above-mentioned. A reading threshold value setting program for setting a reading threshold value of a mark card having an entry field in which a mark is written in one of a plurality of entry frames printed by a dropout color,
Dividing the plurality of entry frames in the entry field into a plurality of groups to obtain multi-value image data of the plurality of entry frames for each group,
Binarization for multi-valued image data of each group is performed a plurality of times while changing the value of the binarization threshold to obtain the reading threshold of each group,
Setting a reading threshold of the mark card based on the reading threshold of the plurality of groups;
Let the computer execute the process,
A reading threshold value setting program.