JP2020086718A - Document data modification apparatus and document data modification method - Google Patents

Abstract

To provide a document data modification apparatus which can reduce the burden in modification even when a character is described with image data.SOLUTION: A document data modification apparatus includes: a character recognition unit which performs character recognition on document data including character data formed by associating coordinate data indicating a position where a character is displayed with a character code representing the character, and image data formed by associating the coordinate data with a character image which represents a character as an image; and a modification unit which modifies, when the character code corresponds to a character code of a character to be replaced, on the basis of a result of the character recognition, the character code to a character code corresponding to a character after replacement, or modifies, when a character included in the character image is to be replaced, the character image to replacement data including the character after replacement.SELECTED DRAWING: Figure 1

Description

The present invention relates to a document data changing device and a document data changing method.

The form is used as an application form for various procedures, a credit card withdrawal statement, and the like, and is distributed to users as a printed matter or presented on the Web.
Such a form is converted into a PDF (Portable Document Format) format document file advocated by Adobe Systems Incorporated of the United States, for example, is subjected to print processing, and is saved in the state of the PDF document file. There are cases. With this format, it is possible to present the PDF document file in the same form when it is printed and presented and when it is presented on the Web.
When it is necessary to change the description content of such a form after it has been created by the issuer, the part to be changed (change target part) is changed.
A system for checking characters and the like included in image data is also disclosed (for example, Patent Document 1).

Japanese Patent No. 4467832

However, the characters described in the form may be described using character data in the document file, or may be described using character images. For example, a company name, a document name, an item name, a product name, a designable character string such as an advertisement, or a logo (logotype) may be represented by an image even if it is a character string. When a character is described using character data, it is possible to easily find out whether there is a character to be changed by using the character search function. However, when the character is described by a character image Cannot use the character search function. Therefore, the operator needs to display the document file on the screen separately from the character changing operation using the character search function, and visually check the display content on the screen as to whether or not there is a change target portion. Therefore, the change work has two steps, that is, the change work using the character search function and the change work for visually locating the changed portion, and the burden of visually locating the changed portion is large.

The present invention has been made in view of such circumstances, and an object thereof is a document data changing device capable of reducing the burden of changing work even when characters are described using image data. , To provide a method for changing document data.

In order to solve the problems described above, the present invention provides character data in which coordinate data indicating a position at which a character is displayed and a character code indicating the character are associated with each other, and character data in which the coordinate data and the character are expressed as an image. A character recognition unit that recognizes characters in document data including image data associated with an image, and the character code corresponds to a character code of a character to be replaced based on the result of the character recognition. If the character code is changed to a character code corresponding to the character after replacement, and the character included in the character image is the character to be replaced, the character image after the character image is replaced And a change unit for changing to replacement data including.

Further, according to the present invention, the character recognition unit includes character data in which coordinate data indicating a position for displaying a character and a character code indicating the character are associated with each other, and a character image in which the coordinate data and the character are expressed as an image. Image data associated with, and character recognition is performed on the document data including, and the changing unit, based on the result of the character recognition, the character code corresponds to the character code of the character to be replaced. If the character code is changed, the character code is changed to a character code corresponding to the replaced character, and if the character included in the character image is the character to be replaced, the character image includes the replaced character. This is a document data changing method for changing to replacement data.

As described above, according to the present invention, even when characters are described using image data, it is possible to reduce the burden of changing work. That is, the operator can perform the work of changing the character using the character search function and the work of changing the character represented by using the image data at the same time, and the character can be changed to the character represented by using the image data. It is possible to save the trouble of visually searching whether or not there is a target portion.

It is a schematic block diagram which shows the structure of the document data change system 1 by one Embodiment of this invention. FIG. 6 is a diagram showing an example of a result of character recognition by a character recognition unit 102. It is a sequence diagram explaining operation|movement of the document data change system 1. It is a conceptual diagram explaining the process of a change process. It is a figure which shows an example at the time of changing the character in which the background color was set. It is a sequence diagram explaining the process of list creation.

A document data changing system 1 according to an embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic block diagram showing the configuration of a document data changing system 1 according to an embodiment of the present invention.
In the document data changing system 1, a terminal device 20A and a terminal device 20B (hereinafter, simply referred to as “terminal device 20” when not identified) are connected to the document data changing device 10 via a network 30. The document data changing device 10 has a function of changing the description content of a portion to be changed in the document data used as a form. The form is, for example, an application form for various procedures, a catalog, a pamphlet, an advertisement, or the like.

The terminal device 20 is a computer, a smartphone, a tablet terminal, or the like, and is used by a user who issues a form or a user who creates a form. The terminal device 20 is provided with an input device. The input device is, for example, a touch panel, a keyboard, a mouse, or the like.
The terminal device 20 transmits the document data used as a form to the document data changing device 10. This document data is an image in which character data in which coordinate data indicating a position for displaying a character and a character code indicating the character are associated with each other, and coordinate data and a character image in which the character is expressed as an image are associated with each other. Data and. The character data is, for example, information on a character associated with a predetermined character code, and is information on a character that can be searched for corresponding to a search character input as a search keyword. The character image may be used, for example, when a company name, a document name, an item name, a product name, a designable character string such as an advertisement, or a logo (logotype) is expressed as an image.

Such document data may be data created according to an arbitrary data format using document creation software or the like. In this embodiment, the case where the data format is the PDF format will be described. However, if it is document data including character data and image data, for example, Microsoft Word (registered trademark), Microsoft Excel (registered trademark) of Microsoft Corporation. ), Microsoft PPT (Power Point) (registered trademark), Illustrator (registered trademark) of Adobe Systems Incorporated, or the like.

Further, the document data may be data in a PDF format or the like, but may be an image file generated by optically reading a printed form with a scanner or capturing an image with a camera. The document data in this case does not include character data. However, data in which character data is added to such an image file can also be used as document data.

Here, the form is created in the terminal device 20A with document creation software or the like, and then saved in PDF format and used as data for printing the form, or published on the WEB using a WEB server. The terminal device (for example, the terminal device 20B) of the user who makes the application can be downloaded and used.
When the user of the terminal device 20A wants to change some characters of such document data, the user can send the document data to the document data changing device 10 and change at least a part of the document data.

Next, the document data change device 10 includes a communication unit 101, a character recognition unit 102, a background recognition unit 103, a change unit 104, a list generation unit 105, an output unit 106, a control unit 107, and a storage unit 108. Have and.
The communication unit 101 communicates with the terminal devices 20A and 20B via the network 30. The communication unit 101 also has a function of receiving document data transmitted from the terminal device 20 and a function of transmitting various information generated in the document data changing device 10 to the terminal device 20.

The character recognition unit 102 performs character recognition on document data including at least a part of a character image in which a character is expressed as an image. There are roughly two types of such document data.
The first is image data in which characters are described as images. For example, there is an image file generated by reading a document with a scanner or the like, and imaged data obtained by capturing an image of the document with a camera.
The second is an image in which character data in which coordinate data indicating a position for displaying a character and a character code representing the character are associated with each other, and coordinate data and a character image in which the character is expressed as an image are associated with each other. Document data including data and. The second document data is, for example, a document file saved in PDF format.

For character data, the character recognition unit 102 recognizes a character by reading a character code included in the character data, and for image data, recognizes a character represented by a character image included in the image data and responds to the recognition result. Recognize a character by obtaining the character code of the character. By performing character recognition on the character image, the character code of the character included in the character image can be generated. As a result, it is possible to perform a search using a search keyword even for a character image, and it is not necessary to visually search for a changed portion. In addition, it is possible to search for both character data and image data by using the search keyword, and there are two steps: the change work using the character search function and the change work of visually locating the changed portion. It is possible to prevent that.

Here, FIG. 2 is a diagram illustrating an example of a result of character recognition performed on the image data by the character recognition unit 102. In this figure, two character recognition results are shown. Here, as an example, a character recognition result is shown in the case where two characters, "hira" and "sei", are expressed as one character image. The upper row shows the result of character recognition of the character "flat" in the character image, and the lower row shows the result of character recognition of the character "completion" in the character image. Coordinate data indicating the coordinate position in the document data. "L" is the X coordinate of the left end of the character (coordinate axis indicating the horizontal direction), "t" is the y coordinate of the upper end of the character (coordinate axis indicating the vertical direction), the X coordinate of the right end of the "r" character, and "b" is It represents the position of the bottom edge of the character in y-coordinate. It indicates that a character as a read result exists in the area represented by these coordinates. Such a character recognition result may be obtained for each character, or one character recognition result may be obtained with a plurality of characters included in one character image as one character string (word). .. In this case, the coordinate data is specified based on the positions of the first character and the last character of one character string.

The background recognition unit 103 recognizes the background of the character image to be replaced.
Background display modes include colors and patterns. When recognizing a color, the background recognition unit 103 recognizes the background color by acquiring the color information of the background of the character image to be replaced. Further, when recognizing the pattern, the background recognition unit 103 recognizes the pattern by copying an image (background) in an area of a predetermined size from the background around the character included in the character image to be replaced. Examples of the background pattern include hatching and dot patterns.

If the character code corresponds to the character code of the character to be replaced, based on the result of character recognition, the changing unit 104 changes the character code to the character code corresponding to the replaced character. If the character included in the character image is the character to be replaced, the character image is changed to replacement data including the replaced character. The character code corresponding to the character after replacement may be input in advance by the operator of the terminal device 20, or may be input by the operator when the replacement target is found. Here, the changing unit 104 determines whether or not there is a character code to be replaced or a character image including a character to be replaced, but it is necessary to change a part of the character code or the character image of the original document data. If the above is possible, the replacement may be performed by any method such as data exchange, data exchange, and switching.

When changing the character image, the changing unit 104 generates a character image in which the character after replacement is prepared in a predetermined font or a character image corresponding to the character after replacement is prepared for the character image. Change to the character image obtained by doing. That is, the changing unit 104 (a) changes the changed character image to a prepared character image, and (b) generates and changes the replaced character image at the time of changing the character image. It is possible to execute any of the processing of.
The character image input in advance in the case of (a) may be input in advance by the operator of the terminal device 20.
In the case of (b), the changing unit 104 generates replacement data in which the background recognized by the background recognizing unit 103 is combined with the replaced character. This replacement data can be generated as a character image or can be generated as character data.

When generating the replacement data as a character image, the changing unit 104 generates a character image in which the replaced character is expressed as an image, and synthesizes the background recognized by the background recognition unit 103 as the background of this character image. .. For example, the changing unit 104 replaces the background color or pattern in the generated character image with the color or pattern recognized by the background recognition unit 103 or generates a character image with a transparent background, and the generated character image is generated. By superimposing the background recognized by the background recognition unit 103 on the lower layer of the character image, the replaced character image is generated.

When the replacement data is generated as the character data, the changing unit 104 sets the background recognized by the background recognition unit 103 as the background background for the character code indicating the replaced character. For example, when the replacement data is described in the XML (Extensible Markup Language) format, it is possible to set the replacement character data by enclosing a code that specifies the background color in tags.

In this way, the background is composed for the replaced character, so even if the character image before replacement is changed to replacement data, the background around the replacement data and the background of the replacement data are Can be the same or almost the same, so that the continuity between the background around the replacement data and the background of the replacement data can be maintained. As a result, even if the character image is replaced, it is possible to prevent the appearance of the entire form from being deteriorated or giving a feeling of strangeness.

The process of combining the background as the replacement data may be realized by another method. For example, when the background of the character is a solid color (a state where the character is uniformly filled with the same color) and the character color is a lighter (lighter) color than the background, the changing unit 104 Negative/positive inversion is performed as preprocessing for the background and the color of the character, the character recognition unit 102 performs character recognition, the character to be replaced is replaced using the character recognition result, and then the negative/positive inversion is performed. You may return it. Further, instead of undoing the negative/positive inversion, the background color may be combined as described above.
Note that the background color may be set to a predetermined color, or the color of a pixel in a region of a predetermined size around the character to be replaced is detected, and when there are a plurality of detected colors, The color having the largest area may be set as the background, and the color having the second largest area may be set as the character color.

The list generation unit 105 determines whether or not the document data includes a character to be replaced based on the result of the search using the search keyword, and stores the determination result in the storage unit 108 in association with the document data. To do.
Further, the list generation unit 105 generates list information (list) indicating whether or not each document data includes a character to be replaced, for a plurality of pieces of document data associated with a determination result.

The output unit 106 outputs various information. The output destination is, for example, the terminal device 20, a display device connected to the document data changing device 10, or the like.

The control unit 107 controls each unit in the document data changing device 10.
The storage unit 108 stores various data. The storage unit 108 is, for example, a HDD (Hard Disk Drive), a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), a RAM (Random Access Read/Write Memory), a ROM (Random Access Read/Write Memory), or a ROM (ROM or Random Memory). It is configured by an arbitrary combination of storage media.

Next, the operation of the document data changing system 1 will be described with reference to FIGS.
FIG. 3 is a sequence diagram for explaining the operation of the document data changing system 1, and FIG. 4 is a conceptual diagram for explaining the process of the changing process.
In response to an instruction from the user, the terminal device 20 informs the document data changing device 10 of document data of a form that may include a character to be changed, a search keyword that specifies a search target, and an instruction to specify a character after replacement. It is transmitted (step S101). The search keyword is text data representing a character string to be replaced. This search keyword is a character string of at least one character.

The character recognition unit 102 of the document data change device 10 receives an instruction to specify the document data, the search keyword, and the replaced character from the terminal device 20 by the communication unit 101 and stores the instruction in the storage unit 108. Binarization processing is performed (step S201). By performing this binarization process, the character recognition unit 102 can make each pixel in the document data, which has a shading, one of binary values of white and black.
Next, the character recognition unit 102 performs a transparency process on the binarized document data (step S202). By performing this transparent processing, the character recognition unit 102 causes the shadow formed on the outer periphery of the form, the frame line, and the noise existing on the image (dirt existing in the optical system, which occurs when the document data is optically read. Etc.), etc., which is caused by
It should be noted that the character recognition unit 102 may perform, as preprocessing, correction such as elimination of inclination as necessary, in addition to the above-described binarization processing and transparency processing.

Next, the character recognition unit 102 performs the character recognition process on the character data and the character image included in the document data for the document data after the transparent process (step S203). Here, the character recognition unit 102 recognizes a character in character data by reading a character code included in the character data, recognizes a character represented by a character image in image data, and recognizes a character corresponding to a recognition result. Get the code.

When the character recognition processing is performed, the changing unit 104 searches for the result of character recognition using a search keyword (step S204). This search is performed for the character code read from the character data and the character code obtained from the character image. Note that, for document data that does not include character data such as image data, a search is performed with the character code obtained from the character image as the target.
When the character code corresponding to the search keyword is obtained as the search result from the document data, the changing unit 104 transmits the obtained character data to the terminal device 20 as the change target by the output unit 106 (step S205). ). For example, the changing unit 104 needs to change the image corresponding to the character code obtained as the search result in step S204 with respect to the image of the document data after the transparency process in step S202. An image in which the figure indicating is superimposed is generated, and the generated information is transmitted to the terminal device 20 as information indicating the change target. This allows the user of the terminal device 20 to easily understand at which position in the document data the character to be changed is located.

When the terminal device 20 receives the information indicating the change target transmitted from the document data changing device 10, the terminal device 20 displays the received information on the screen. Here, as shown in FIG. 4, the image data 500 of the form to be changed is displayed on the display screen of the terminal device 20. Here, for example, the image data after the transparent processing is displayed. The diagram shown by the image 510 is an enlarged diagram of a partial region of the image data 500. An image 521 in which a graphic indicating that there is a change target is superimposed is displayed on the character extracted as the change target in the image data, as shown in image 520.

Further, in displaying the character extracted as the change target, as shown in the image 530, it is shown that there is a change target together with the character after the replacement designated in step S101 for a portion where the character to be changed exists. It is also possible to superimpose and display the figure. The process of superimposing the replaced character may be executed after the document data changing device 10 performs the search using the search keyword in step S204. When the replaced character is displayed in a superimposed manner, it may be displayed in a transparent state by being painted in a predetermined color so that the character can be visually recognized in the area of the figure indicating that there is a change target. Alternatively, the background color of the character to be replaced may be replaced with or overlapped with a predetermined background color and displayed. This makes it easier for the user to find the part to be changed.
If a plurality of parts to be changed are extracted, each of them is displayed as a change target.

Returning to FIG. 3, the terminal device 20 receives an instruction to select a replacement target, which is input by the user from the input device of the terminal device 20 (step S102).
The replacement target instruction is, for example, an instruction for specifying a character to be actually replaced in the change target. Here, there is a case where all the characters extracted as a change target are changed, but there are cases where a part of the characters extracted as a change target is changed. For example, if you change the notation of the era "Heisei" in the document data to another notation, or if the company name, organization name, product name, etc. include the characters "Heisei", it is not necessarily changed to another notation. Since it is not limited, it is preferable to have the user confirm and specify the character to be actually changed as the replacement target.
Further, the terminal device 20 receives a font instruction input by the user from the input device of the terminal device 20 (step S103). The font instruction is an instruction to specify the font when displaying the character after the replacement. The font instruction is, for example, an instruction to specify a typeface expressing a character, a character size, a style such as bold or italic, and the like.
The terminal device 20 transmits an instruction for specifying the replacement target and an instruction for the font to the document data changing device 10. The designation of the character after replacement may be input in step S103 or may be input in step S101.

When the changing unit 104 of the document data changing device 10 receives the instruction to specify the replacement target and the font instruction from the terminal device 20, the replacement target replaces the character data based on the received instruction to specify the replacement target. If it is specified as the target, the character code of the specified character data is replaced with the replaced character code (step S206).
Next, when the replacement target is specified as the replacement target for the character image, the changing unit 104 outputs an instruction to recognize the background of the specified character image to the background recognition unit 103. Based on this instruction, the background recognition unit 103 recognizes the background of the designated character image and outputs the recognition result to the change unit 104 (step S207).
When the background recognition result is obtained, the changing unit 104 replaces the character code of the character included in the character image with the replaced character code, and draws the character corresponding to this character code in the specified font ( Step S208). Further, the changing unit 104 generates replacement data by synthesizing the background obtained by the background recognizing unit 103 with the background of the character code after replacement (step S209). Then, the changing unit 104 replaces the replacement target character image with the replacement data. Then, the changing unit 104 transmits the replaced document data to the terminal device 20 by the output unit 106.

Upon receiving the replaced document data, the terminal device 20 displays the received document data on the screen (step S104). Here, in FIG. 4, the document data 600 is an example of the document data transmitted from the document data changing device 10. In the image 610 obtained by enlarging a part of the document data 600, in the portion replaced with the replacement data, the character based on the character data after the replacement is displayed in the specified font and the same as the background before the replacement. The background is displayed in a composited state. The user looks at the replaced document data displayed on the screen and determines whether or not to complete the change process. When completing the change process, the user inputs a change completion instruction to the terminal device 20. .. The terminal device 20 transmits a change completion instruction input by the user to the document data changing device 10.

Upon receiving the change completion instruction, the document data changing device 10 stores the replaced document data in the storage unit 108. The terminal device 20 can receive the replaced document data stored in the storage unit 108 from the document data changing device 10 and use it as a form. The document data displayed in step S104 can be used as a form.

After the replacement target is extracted in step S205, the replacement target is transmitted to the terminal device 20 and an instruction for specifying the replacement target is input. If the instruction of step S206 has been acquired in advance, the processing of step S206 and subsequent steps may be executed without transmitting the replacement target.

Next, an example of a case where a character having a background color is changed will be described. FIG. 5 is a diagram illustrating an example of changing a character whose background color is set.
In this figure, an image 700 is an image obtained by enlarging a part of the document data displayed on the screen before the change. Here, for example, when the character string “Heisei 32” is used as the search keyword and is searched, the character string “Heisei 32” (reference numeral 701) shown in the image 700 is searched as the replacement target. Here, when the character code of this character is simply replaced without synthesizing the background for the character, for example, as shown in image 710, the background of the replaced character becomes the background surrounding it. Is displayed in a different mode (for example, different background color), the continuity between the background of the replaced character and the background in the vicinity of the replaced character is lost, and the appearance is not good.
Here, by combining the background with the character after replacement, as shown in image 720, an image in which the continuity of the background of the character after replacement and the background around the character after replacement is maintained. Since it is synthesized as 721, it looks good.

Next, another function of the output unit 106 will be described. In addition to outputting the information described above, the output unit 106 can also create and output a list of change target locations.
FIG. 6 is a sequence diagram illustrating a list creation process.
In this figure, steps S101 to S204 are the same as steps S101 to S204 shown in FIG. However, the document data of the form transmitted in step S101 is plural. That is, in step S101, the document data is transmitted for each of the plurality of forms.

When the changing unit 104 performs the search using the search keyword in step S203, the list generating unit 105 determines whether or not the search target document data includes a character to be replaced, and replaces it. If the target character is included, the replacement target character is extracted (step S251). Here, when the character code that matches the search keyword is found by the search using the search keyword, the list generation unit 105 determines that the document data that is searched includes the character to be replaced. When it is determined that the character code that matches the search keyword is not found, it is determined that the document data that has been searched does not include the character to be replaced. Then, when a character code that matches the search keyword is found, the list generation unit 105 extracts the character code as a replacement target.
Next, the list generation unit 105 adds a flag indicating whether or not the replacement target character has been found to the searched target document data, and stores it in the storage unit 108 (step S252). For the flag, for example, "1" is set when there is a replacement target character, and "0" is set when there is no replacement target character.

The control unit 107 determines whether or not the flag attaching process has been completed for all the forms received from the terminal device 20 (step S253), and if not completed, the unprocessed forms are targeted from step S201. The process of is repeated.
On the other hand, when the flag adding process is completed for all the forms, the control unit 107 generates a list for each document for which the flag adding process is performed (step S254). This list is information in which the identification number of each form is associated with a flag indicating whether or not the form has been replaced.
When the list is generated, the output unit 106 transmits the list to the terminal device 20.

Upon receiving the list, the terminal device 20 displays the list on the display screen (step S251). As a result, the user can easily understand whether each form has a replacement target. For example, it becomes possible to understand that the second form has characters to be replaced among the forms spelled out of three. Further, by saving such a list, it becomes possible to use it as a log.

In the embodiment described above, the case where the document data change process is performed for the PDF format form has been described, but the document data change process is performed for the document data that is an image file instead of the PDF format. You can When character recognition is performed on an image file, a plurality of characters and data in which coordinate data is associated with each character are generated in one image file. In this case, one of the plurality of characters may be a character string on a word-by-word basis, and data in which the character code and the coordinate data are associated with each other may be generated.

Further, in the above-described embodiment, the changing unit 104 may change the color of the mount of the form. As the color of the mount, for example, the color of the mount may be set by setting the background color in a layer lower than the background set in the character data or the character image. Further, as the color of the mount, a background color that is the color of the mount may be set for a portion where the background is not set in the character data or the character image or a portion where the background is set to be transparent.

Each unit of the document data changing device 10 in the above-described embodiment may be realized by a computer. In that case, the program for realizing this function may be recorded in a computer-readable recording medium, and the program recorded in this recording medium may be read by a computer system and executed. The “computer system” mentioned here includes an OS and hardware such as peripheral devices. Further, the “computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, or a storage device such as a hard disk built in a computer system. Further, the "computer-readable recording medium" means to hold a program dynamically for a short time like a communication line when transmitting the program through a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory inside a computer system that serves as a server or a client in that case may hold a program for a certain period of time. Further, the program may be for realizing some of the functions described above, or may be one that can realize the functions described above in combination with a program already recorded in the computer system, It may be realized using a programmable logic device such as FPGA (Field Programmable Gate Array).

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and includes a design and the like within a range not departing from the gist of the present invention.

1 Document Data Change System 10 Document Data Change Device 20, 20A, 20B Terminal Device 30 Network 101 Communication Unit 102 Character Recognition Unit 103 Background Recognition Unit 103 Background Recognition Unit 104 Change Unit 105 List Generation Unit 106 Output Unit 107 Control Unit 108 Storage Unit

Claims (4)

It includes character data in which coordinate data indicating a position for displaying a character and a character code indicating the character are associated with each other, and image data in which the coordinate data and a character image in which the character is expressed as an image are associated with each other. A character recognition unit that recognizes characters for document data,
Based on the result of the character recognition, if the character code corresponds to the character code of the character to be replaced, change the character code to the character code corresponding to the character after replacement, the character code When the character included in the image is a character to be replaced, a changing unit that changes the character image to replacement data including the replaced character,
Document data changing device having. The replacement data is a character image prepared in advance in which characters after replacement are expressed in a predetermined font, or a character image obtained by generating a character image corresponding to the characters after replacement. Document data change device described. A background recognition unit that recognizes the background of the replacement target character image,
The change unit is
The document data changing device according to claim 1, wherein replacement data is generated by combining the recognized background with the replaced character, and the replacement target character image is changed to the generated replacement data. An image in which the character recognition unit associates the character data in which the coordinate data indicating the position where the character is displayed with the character code indicating the character with each other, and the coordinate data and the character image in which the character is expressed as an image. Character recognition is performed on document data including data and
The changing unit, based on the result of the character recognition, when the character code corresponds to the character code of the character to be replaced, changes the character code to the character code corresponding to the replaced character. Then, when the character included in the character image is a character to be replaced, the document data changing method of changing the character image to replacement data including the replaced character.

Images