JP2008134683A - Image processor and image processing program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To assist comparison of numerical information in business forms issued by issuers of a plurality of areas. <P>SOLUTION: A business form recognition part 40 provided in an image processor searches use language or a unit of a numeric value by performing character recognition of a business form read by an image reading part 22. A conversion necessity decision part 52 decides whether or not the translation of language or the conversion of units are necessary by comparing the locale (area) of the image processor searched by a device locale information acquisition part 50 with the use language or units of the business form. When it is necessary to translate language, a business form information processing part 60 converts the language into language corresponding to the locale of the image processor. When it is necessary to convert the units, the business form information processing part 60 converts the numerical values on the business form into the values of the units corresponding to the locale of the image processor. Thus, the results of translation and conversion are printed out from an image output device 24. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image processing apparatus and an image processing program.

  With the globalization of the economy, individuals and companies are buying products from various countries and regions. For example, when purchasing a product, a company obtains an estimate from each product provider in various countries and regions, and purchases the product from the provider who presents the most advantageous conditions among them. In recent years, quotes are often provided in the form of electronic data, but quotes are often sent by facsimile or mail. In addition, since units such as product length and weight and currency units of money differ depending on the country or region, it may be difficult to compare estimates issued by providers in various countries and regions.

  The system disclosed in Patent Document 1 stores an input unit that accepts input of material contract information, local price, and basic information on import / export expenses, a master table that stores basic information on import / export expenses, and an import / export expense ratio calculation logic. A storage unit having a calculation table, a calculation unit that calculates a landing price at the import source from the local price of the material based on input information, a display unit that displays the calculated landing price, and a landing price to the factory procurement device The communication part which transmits. The calculation unit further unifies the local currency unit and the landing price currency unit at the material import source based on the exchange information, and calculates the material lead time based on the lead time calculation information.

Japanese Patent Laying-Open No. 2005-228306

  The present invention has been made in such a technical background, and it has been a problem that comparison of numerical information in documents issued by providers in a plurality of regions has been difficult in the past. It is an object of the present invention to provide an image processing apparatus and an image processing program that provide a technique that helps to compare numerical information in documents issued by an issuer.

  (1) In one aspect of the present invention, a reading unit that reads a document, a character recognition unit that performs character recognition on image data of the document output from the reading unit, and a result of character recognition by the character recognition unit A determination unit for determining the regional information of the document based on a detection unit, a detection unit for detecting numerical information in the document based on a result of character recognition by the character recognition unit, and the regional information of the document determined by the determination unit Is different from the area where the image processing apparatus is installed, the conversion unit converts numerical information detected by the detection unit shown in the document into a representation in a unit or a notation system corresponding to the area of the image processing apparatus And a presentation unit that presents a result of conversion by the conversion unit to a user.

  (2) In one aspect, in the configuration (1), the presenting unit prints a representation of the conversion result of the numerical information by the conversion unit together with the numerical information indicated in the document.

  (3) According to another aspect, in the configuration (1), the image processing apparatus has a difference between the conversion result of the numerical information by the conversion unit and a reference value of the numerical information, which is a predetermined value or more. An informing unit for informing that effect is further provided.

  (4) In another aspect, the computer performs character recognition on the image data of the document, determines regional information of the document based on the result of character recognition, and determines a numerical value in the document based on the result of character recognition When information is detected and the area information of the document is different from the area where the computer is installed, the numerical information detected by the detection unit indicated in the document is expressed in units or notation corresponding to the area of the image processing apparatus. Provided is an image processing program for executing processing for converting into expression in a system and presenting the result of this conversion to a user.

  According to the configuration of (1) or (4) above, the numerical values shown in the document can be aligned with the unit or the notation method suitable for the installation location of the image processing apparatus, and information easy to understand for the user can be provided.

  In the configuration of (2), not only the conversion result expression but also the numerical information originally shown in the document is printed, so that the user can know the original numerical information at the same time.

  According to the configuration of (3) above, for example, when the conversion coefficient of the conversion unit fluctuates with time, such as exchange rate fluctuation, the user is notified of a large fluctuation exceeding a predetermined value, or the estimated amount of each quotation is estimated. If the difference between the reference value and the conversion result is large, such as notifying the user whether the amount is within the allowable range from the reference value, the user can be alerted by notifying the user of the difference. .

  Preferred embodiments of the present invention will be described below with reference to the drawings. In the drawings, similar components or steps are denoted by the same reference numerals, and redundant description is omitted.

  In the present embodiment, a document such as a form (for example, an estimate) is read by an image processing apparatus having both functions of a scanner and a printer (such an image processing apparatus is also called a digital multi-function peripheral), and obtained by this reading. The numerical information in the obtained document image is processed and output, for example, into a unit easy to understand for the user.

  For this conversion, in this example, an image area separation function provided in the image processing apparatus is used. 2. Description of the Related Art Image forming apparatuses such as copiers and multifunction peripherals generally have an image area separation function for separating a character area and an image area in a read image in order to improve print image quality. For high-speed printing processing, many parts of the image area separation function are implemented as hardware circuits such as an ASIC (Application Specific Integrated Circuit) and a DSP (Digital Signal Processor). In this example, conversion efficiency is improved by using such an image area separation circuit that has been expanded as necessary.

  The main part of the control mechanism of the image processing apparatus is shown in FIG. In FIG. 1, a ROM (Read Only Memory) 12 stores digital information such as a control program for controlling the operation of the image processing apparatus. When the CPU (central processing unit) 10 executes the control program in the ROM 12, control of each part of the image processing apparatus described below is realized.

  A RAM (Random Access Memory) 14 is a main storage device of the image processing apparatus, and is also used as a work memory when executing the control program. The RAM 14 can also be used, for example, as a page buffer that stores image data for one page supplied to the image output device 24.

  The mass storage device 16 is an auxiliary storage device for storing various data, and is a non-volatile storage device such as a hard disk or an EEPROM (Electrically Erasable Programmable Read-Only Memory).

  The operation panel 18 is a user interface means for displaying the user interface of the image forming apparatus and receiving input of various instructions from the user. The operation panel 18 includes, for example, mechanical operation buttons such as a start button, and a liquid crystal touch panel for GUI (graphical user interface). The liquid crystal touch panel displays a GUI screen generated by a control program executed by the CPU 10, detects a user's touch position on the display, and passes the detected position to the control program. The control program interprets the input content of the user from the information on the touch position.

  The communication interface 20 is a device responsible for control when data communication is performed with another device via a network such as a LAN (local area network). A print instruction or the like from the remote host is input into the image forming apparatus via the communication interface 20. The communication interface 20 is also used when accessing a language translation server or conversion rate information providing server (details will be described later) on the network.

  The image reading device 22 is a device that optically reads a document and generates electronic image data. For example, a scanner using a line sensor or an area sensor is an example. Documents set on an automatic document feeder (ADF) (not shown) are fed one by one to the image reading device by the ADF function and optically read.

  The image output apparatus 24 is an apparatus that forms (prints) an image on paper using image data supplied under the control of the CPU 10, and is also called a print engine.

  The facsimile module 26 is a module that transmits and receives facsimile data.

  The image area separating circuit 28 is a circuit that performs image area separation of the form image read by the image reading device 22. As is well known, in image area separation, image areas such as characters and images are discriminated using various image features such as edge strength and spatial frequency of the image. Conventionally, the image area separation circuit is exclusively used for image output such as printing, but the image area separation circuit 28 is used not only for image output but also for analysis processing of a form image.

  The image processing circuit 30 is a circuit that performs image processing on a form image in accordance with applications such as printing and facsimile transmission. For example, when printing, character image processing (such as edge enhancement) and image processing (such as gradation correction) are performed on the character and image image regions separated by the image region separation circuit 28, respectively. .

  Next, the configuration of the functional part related to the form processing of this image processing apparatus and the processing contents will be described with reference to FIGS. As shown in FIG. 2, the image processing apparatus has a form recognition unit 40, a device locale information acquisition unit 50, a conversion necessity determination unit 52, a form information processing unit 60, a form DB (database), as shown in FIG. ) 70. Each of these modules can be realized by causing the CPU 10 to execute a program describing functions or procedures described below. This program is stored in the ROM 12 or the mass storage device 16 and is executed by the CPU 10. This program or a part thereof may be installed in the mass storage device 16 by a portable medium such as a disk or by downloading via a network.

  The image processing apparatus provides a form processing function as an applied function in addition to general functions such as copying and facsimile transmission. When a form processing function is selected from a menu displayed on the operation panel 18 of the image processing apparatus, the image processing apparatus provides a processing function exemplified below.

  The device locale information acquisition unit 50 acquires locale information of the image processing device (S11). As is well known, a locale is a regional setting of an information processing system. The locale information is a set of settings unique to the region such as a language, a character system, a unit of measure, a unit of currency, a date unit, and a date notation pattern used in the region where the information processing system is installed. The concept of “region” here includes a country, and also includes a region in the country and a region that spans multiple countries. An area composed of a plurality of countries is also included in the concept of “area”. The device locale information acquisition unit 50 may identify the locale of the device by, for example, reading information on the region of use registered in the image processing device. Information representing the area where the apparatus is installed or used like the locale information exemplified above is called area information.

  After the form processing function is selected, when an original is set and read on the ADF or platen of the image reading device 22, the read image is transferred to the form recognition unit 40 (S12).

  The form recognition unit 40 analyzes the image and recognizes various types of information from the image. In the form recognition unit 40, the format recognition unit 42 analyzes the image read by the image reading unit 22 and determines which form pattern the image corresponds to (S13).

  For example, the contents described in the form vary depending on the type of the form such as an estimate, an invoice, and a receipt. Also, if the person or company that issues the same estimate is different, the layout of the form will change. As described above, there are various forms of forms depending on the issuer and the form type. In the image processing apparatus, such various forms of patterns are registered, and the format recognition unit 42 determines which pattern the read image corresponds to. In this determination, the format recognition unit 42 may use the image area separation result of the image area separation circuit 28. That is, the image area separation result shows the arrangement of the character area, graphic area, photographic image area, etc. on the image. Based on which of the registered form patterns is close to the above, Judgment can be made. For example, for each form pattern, the arrangement pattern of various areas such as character areas and graphic areas in the form pattern is registered, the arrangement configuration of various areas in the read image, and the arrangement of various areas in each of these form patterns The degree of similarity with the configuration is obtained, and for example, the form pattern having the highest degree of similarity equal to or higher than a predetermined value may be determined as the form pattern corresponding to the image. Further, since a headline indicating the type of the form is often displayed on the form, the type of the form can be determined by headline analysis. For example, the character area at the top of the image may be determined as the headline of the form, the headline may be recognized, and the form type may be determined from the character string obtained by character recognition. If a character string “estimate” is obtained by character recognition, it is understood that the image is an image of the estimate. Such character recognition is performed by the character recognition unit 44. In addition, information such as the company logo, company seal, and company name of the issuer is often placed on the form, and the location where such information is placed is generally determined. Therefore, the image of the image area at such a candidate position and the character string of the character area are analyzed, and the image and the character string are registered with the company logo, company seal, and company name character string registered in advance. Similarity may be obtained, and based on the similarity, it may be determined which company issued the image. The form pattern recognition may be performed by comprehensively combining the image area arrangement configuration, headings, logos, company names, and the like exemplified above.

  The form recognition unit 40 determines whether the read image is a form based on the processing result of the format recognition unit 42 (S14). If it is not a form, an error message is displayed on the screen of the operation panel 18. Error processing such as performing is performed (S15).

  If it is determined that the read image corresponds to one of the registered form patterns, the character recognition unit 44 uses the character recognition unit 44 for each region determined as a character region by the image region separation result. The recognition result is acquired (S16), and the language used in the form is determined based on the character type and the word included in the character recognition result (S17). By distinguishing whether the character in the character recognition result is alphabet only, kanji only, kanji kana or the like, it can be discriminated whether it is a Western language, Chinese or Japanese. In addition, it is possible to determine whether English, German or French by the same alphabet, depending on whether umlauts or accents are included. Also, expressions in each language for typical words that are likely to be used in forms are registered in advance in the image processing device, and if there are such registered expressions in the character recognition results, To determine. A conventional technique can be used for language determination from such a character recognition result.

  The numerical value / unit extraction unit 46 extracts a character string indicating a numerical value or a similar concept or a character string indicating a unit of the numerical value from the character recognition result. Examples of numerical values or similar concepts included in the form include the quantity and unit price of the product, the total price, and the date.

  As described above, the form recognizing unit 40 provides the obtained language information, the character recognition result of each character area, and the extraction result of numerical values and units to the conversion necessity determining unit 52 and the form information processing unit 60.

  The conversion necessity determination unit 52 determines whether or not the language used by the form recognition unit 40 matches the locale of the image processing device obtained by the device locale information acquisition unit 50 (S18). If the language used does not match the locale of the image processing apparatus, the form information processing unit 60 is caused to translate information on each character area (S19). This translation is executed by the translation unit 62 in the form information processing unit 60. The translation unit 62 translates words and sentences in the form into a language that matches the locale of the image processing apparatus, using a natural language translation technique that has been used conventionally. In this way, instead of providing a translation function in the image processing apparatus, translation may be requested to a translation server on the network and the translation result may be received. If the language used matches the locale of the image processing apparatus, translation processing is not necessary.

  Further, if there is a unit whose unit does not match the locale of the image processing device among the numerical values extracted by the numerical value / unit extraction unit 46, the conversion necessity determining unit 52 sets the unit to a unit that matches the locale of the image processing device. The form information processing unit 60 is instructed to convert to (S20). For example, when the locale of the image processing apparatus is “Japan”, the language of the form is American, and the unit of the amount in the form is “US dollar”, the unit of the amount is changed to “Japanese yen” Convert the value of the amount according to the exchange rate. For example, if the length is described in feet in the form, it is converted into cm. Such conversion is performed by the unit converter 64. The unit conversion unit 64 includes a locale information table as shown in FIG. 4 and a conversion table as shown in FIG. 5 for such conversion.

  In the locale information table illustrated in FIG. 4, a set of a variable type of numerical information, a locale (region), and a pattern of numerical information is registered. For example, the date information whose variable type is “date” is the pattern “yyyy'year'M'month'd'day '" or "yyyy / MM / dd" if the locale is "Ja", that is, Japan. Expressed with a pattern. The locale “En” indicates an English-speaking area, “En_US” indicates the United States, and “En_GB” indicates the United Kingdom. In this table, the length information whose variable type is “length” indicates that the locale is expressed in centimeters when the locale is Japan, and is expressed in feet when the locale is English-speaking. The locale information shown in FIG. 4 is merely an example. Variable types, locales, and patterns other than those exemplified may be registered in the table. In addition, as in the date example, for numerical information that has multiple patterns corresponding to the same locale, which of these multiple patterns will be converted when unit conversion is performed according to the locale of the image processing device? May be set in advance in the image processing apparatus by an administrator or user of the image processing apparatus.

  Although illustration is omitted, there are cases where a decimal point or a digit separator is different depending on the country or region, and such a symbol such as a decimal point for each country is also a kind of locale information.

  In the conversion coefficient table illustrated in FIG. 5, conversion coefficient values are registered for pairs of conversion source and conversion destination units. In the illustrated example, the conversion coefficient from US dollar to Japanese yen is 118. In other words, the amount expressed in US dollars is multiplied by the coefficient 118 to obtain the amount in Japanese yen units. Of the conversion coefficients, the currency exchange rate fluctuates, so the value is changed as needed according to the fluctuation. Such conversion coefficient information may be managed by a server on the network, and the latest information at that time may be acquired and used each time the image processing apparatus performs conversion.

  The output information generation unit 66 of the form information processing unit 60 provides output information to the user based on the form information acquired from the form recognition unit 40, the translation result of the translation unit 62, and the conversion result of the unit conversion unit 64. Is generated (S21). The output information is, for example, information obtained by converting a language or numerical unit in a form according to the locale of the image processing apparatus. Such output information is printed out from the image output device 24 or accumulated in the form DB 70 (S22).

  The output information may include both the numerical value of the original unit and the unit conversion result. In this case, an image in which the numerical value of the original unit and the unit conversion result are written together in the same form image may be printed out. For example, when the estimate 100 shown in FIG. 6 received from a US company is read by an image processing apparatus installed in Japan, for example, an estimate 150 as shown in FIG. 7 is printed out. In the estimate 150, the term is translated into Japanese, and the numerical value is converted into Japanese units, and then the value expressed in the original US unit is shown in parentheses. The order in which the converted numerical values and the numerical values before conversion are arranged may be reversed. By writing both values together, for example, it is easy to find an erroneous conversion. Further, in this estimate sheet 150, the date 152 on which it is printed and the exchange rate 154 at that time are shown, for example, in the margin of the periphery of the paper. Thereby, the user can know the conversion result of the amount of money and the conversion rate at which time.

  In this way, the estimate 150 converted for Japan has the same numerical unit as the estimate 200 (see FIG. 8) for the same target issued by a Japanese company, and therefore it is easy to intuitively compare the two.

  Instead of writing the values before and after conversion as in the example of FIG. 7, the original form and the conversion result may be printed on both sides of the front and back of one sheet. In addition, the original form and the conversion result may be printed on different sheets. Also, the converted numerical values can be printed with normal toner, and the original unit values can be printed with invisible toner that does not reflect visible light but can be read with invisible light such as infrared or ultraviolet light. Good. When the image processing apparatus supports such a plurality of print output methods, the user designates which method to use among them, or the administrator sets default values in the image processing apparatus. Just do it.

  Further, instead of printing out, the conversion result may be displayed on the display screen of the operation panel 18. The user or administrator may specify whether the conversion result is printed, displayed on the screen, or both.

  The output information generated by the output information generation unit 66 may be stored in the form DB 70. The information stored in the form DB 70 may be in the form of image information used for printing or display, or may be in the form of a structured document in which the document structure of the form is described in a language such as XML (eXtensible Markup Language). It may be a combination of In order to generate a structured document, for example, the information of the element names and values of individual elements in the form and the logical structure information between the elements should be incorporated into the information of each form pattern. Good. For example, based on the form pattern corresponding to the form image determined by the format recognizing unit 42, the form information processing unit 60 determines each element in the form (for example, issue date, issuer, individual item) based on the form pattern information. Value) and the total amount) are recognized from the form image, and a structured document including the recognized value is created.

  Next, another example will be described. For example, when you purchase goods from overseas vendors, import duties and other taxes may be levied, but such taxes may not be indicated in the estimate. In such a case, the form information processing unit 60 obtains the area where the issuer of the read form is located, obtains the tax for importing the product from this and the locale of the image processing apparatus, Information may be added to the output information. The region of the issuer of the form can be determined based on the language used in the form, the unit shown on the form, the address of the issuer shown on the form, or the like, or a combination thereof. Create a database of tax rates determined by a combination of information on the exporting country (ie, the country that issued the form) and the importing country (the country where the image processing device is installed), and the type of the target product, and refer to that database. Then, the form information processing unit 60 calculates the tax amount by calculating the tax rate and multiplying this by the amount.

  Next, a modification of the embodiment will be described. In the modified example, when the difference between the result of converting the numerical unit of the read form and the reference value of the numerical value is equal to or greater than a predetermined value, the user is alerted by notifying the user. .

  One such modification is dealing with exchange rate fluctuations. The estimate that has been converted and converted by the image processing apparatus is converted into an amount at the exchange rate at the time of output. When this is reviewed later or compared with estimates from other companies, the exchange rate has fluctuated since the time of output, and the amount has generally changed. Large fluctuations in this amount can adversely affect judgment. Therefore, as shown in FIG. 9, the image processing apparatus of this example performs conversion again according to the exchange rate at this time when the estimate written by converting the currency unit is read again, and the conversion result It is determined whether or not the amount of money (for example, the total amount) has changed by a predetermined value or more from the amount indicated in the read estimate (S23). If it has changed more than the predetermined value, new output information reflecting the conversion result is generated (S21), and printed or displayed (S22). If the change is less than a predetermined value, such update output is not performed. In this example, the amount of money at the time of printing the estimate converted unit is equivalent to the above-described reference value. In step S23, for example, as shown in FIG. 7, when the image processing apparatus prints the unit-converted estimate, for example, as shown in FIG. 7, the current exchange rate or date / time is printed on the estimate. Then, when the image processing apparatus reads the estimate, it can know the exchange rate at the time of printing by detecting the exchange rate or the description of the date and time. The change threshold value used as a criterion for determining whether or not to perform the update output in step S23 may be registered in advance in the image processing apparatus by the user or the administrator. In this example, the change in the amount of money is compared with a threshold value to determine whether or not there is an update output. Instead, the update output may be performed when the change in the exchange rate exceeds a certain threshold value.

  As another example, if there is a significant fluctuation in the estimated amount or exchange rate due to exchange rate fluctuations, the image processing apparatus may notify the contact information registered by the user by e-mail or other notification means. Good. For example, when the image processing apparatus converts the currency unit of the amount of the estimate and prints it out, the user who entered the estimate can input contact information (for example, an e-mail address) to the image processing apparatus. That's fine. Then, when the estimated amount or the exchange rate exceeds a preset threshold value due to subsequent exchange rate fluctuations, the image processing apparatus may notify that the contact has undergone a significant amount fluctuation.

  As yet another example, the user inputs a reference value for the estimated amount in advance to the image processing apparatus, and the result of unit conversion of the estimated amount of the estimated document read by the image processing apparatus as shown in FIG. Compared with the reference value (S24), if the difference between the unit conversion result and the reference value is greater than or equal to a predetermined value, information indicating that there is such a difference may be incorporated into the output information (S25) and printed out. (S22). Instead of such print output, a message indicating that the difference between the unit conversion result and the reference value is a predetermined value or more may be displayed on the screen of the operation panel 18.

  Further, the processing as shown in FIG. 10 can be used in addition to the exchange rate fluctuation of the estimated amount. For example, when erroneous conversion occurs in unit conversion of weight, length, and other numerical values, it is not possible to accurately compare forms. Therefore, if the conversion result value is different from the corresponding reference value by a predetermined value or more, that fact is displayed on the screen, or a message to that effect is added to the report showing the conversion result and output. May be.

  In the above example, the image processing apparatus converts numerical information on the form read by the image processing apparatus. However, such a conversion function may be executed by a device different from the apparatus that read the form. Good. This another apparatus may be realized, for example, by executing a program describing the function or processing content of each unit described above on a general-purpose computer. For example, a computer has a circuit configuration in which a CPU (Central Processing Unit), a memory (primary storage), various I / O (input / output) interfaces, and the like are connected via a bus as hardware. Also, a disk drive for reading various types of portable non-volatile recording media such as an HDD (hard disk drive), a CD, a DVD, and a flash memory is connected to the bus via, for example, an I / O interface. Such a drive functions as an external storage device for the memory. A program in which the processing content of the embodiment is described is stored in a fixed storage device such as an HDD via a recording medium such as a CD or DVD, or via a network, and is installed in a computer. The program stored in the fixed storage device is read into the memory and executed by the CPU, whereby the processing of the embodiment is realized. A similar function can also be realized by a program for the function of classifying an image region by the image region separation circuit 28.

It is a figure which shows the example of the hardware constitutions of the image processing apparatus of embodiment. It is a figure which shows the example of a function structure of the image processing apparatus of embodiment. 6 is a flowchart illustrating an example of a processing procedure of the image processing apparatus according to the embodiment. It is a figure which shows the example of a locale information table. It is a figure which shows the example of the conversion coefficient table for unit conversion. It is a figure which shows the example of the form before conversion. It is a figure which shows the example of the form converted by the image processing apparatus of embodiment. It is a figure which shows the example of another form. It is a flowchart which shows the process sequence of a modification. It is a flowchart which shows the process sequence of another modification.

Explanation of symbols

  22 image reading device, 24 image output device, 40 form recognition unit, 42 format recognition unit, 44 character recognition unit, 46 numerical value / unit extraction unit, 48 locale determination unit, 50 device locale information acquisition unit, 52 conversion necessity determination unit , 60 form information processing part, 62 translation part, 64 unit conversion part, 66 output information generation part, 70 form DB.

Claims (4)

A reading unit for reading a document;
A character recognition unit that performs character recognition on the image data of the document output by the reading unit;
A determination unit that determines region information of the document based on a result of character recognition by the character recognition unit;
A detection unit that detects numerical information in the document based on a result of character recognition by the character recognition unit;
When the region information of the document determined by the determination unit is different from the region of the installation location of the image processing device, the numerical information detected by the detection unit indicated in the document is a unit corresponding to the region of the image processing device Or a conversion unit for converting into expression in the notation system;
A presentation unit for presenting a conversion result by the conversion unit to a user;
An image processing apparatus comprising: The image processing apparatus according to claim 1,
The presenting unit prints the representation of the conversion result by the conversion unit of the numerical information together with the numerical information indicated in the document.
An image processing apparatus. The image processing apparatus according to claim 1,
A notification unit for notifying that when a difference between the conversion result of the numerical information by the conversion unit and a reference value of the numerical information is a predetermined value or more;
An image processing apparatus further comprising: On the computer,
Character recognition is performed on document image data,
Determine the regional information of the document based on the result of character recognition;
Based on the result of character recognition, detect numerical information in the document,
When the area information of the document is different from the area where the computer is installed, the numerical information detected by the detection unit indicated in the document is expressed in a unit or a notation system corresponding to the area of the image processing apparatus. Converted,
Present the result of this conversion to the user,
An image processing program for executing processing.

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