JP2019145038A - Generation device and generation method of display data of electronic book - Google Patents

Abstract

To provide a generation device and a generation method of display data of an electronic book capable of automatically applying a page number or a line number.SOLUTION: A generation device 100 for display data of an electronic book comprises: region extraction means 10 for extracting a text region and a page number region from a layout in electronization data of a paper book; character data extraction means 20 for extracting plane coordinate data in electronization data of the paper book by extracting character data in each region; page number data application means 30 for setting the character data extracted from the page number region as page number data, and applying the page number data to a prescribed position in the text character data; and line number data application means 40 for setting pieces of text character data in which, one coordinate value of plane coordinate data in the text character data is a same value or in a prescribed range in which, the value is a center of the prescribed range, to a same text group, and applying a number corresponding to the text line number to the same text group as line number data.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electronic book display data creation apparatus and electronic book display data creation method, and more specifically, a paper medium book (hereinafter referred to as a paper book) which is original document data, and electronic data of a document. The electronic book display data creation device and the electronic book display data can be automatically assigned a page number and a line number to the electronic book display data generated when the data is converted into electronic book data. Regarding the creation method.

  2. Description of the Related Art Conventionally, an apparatus that reproduces an electronic book stored in advance as electronic data as sound is known (see, for example, Patent Document 1 (Japanese Patent Laid-Open No. 2000-57752)). The device disclosed in Patent Document 1 is a device that plays back a digitally recorded book according to the DAISY (Digital Accessible Information System) standard, and is especially useful for people who are visually impaired to enjoy reading. Is a device that can read out the text information described in the above as speech.

  Further, an apparatus that includes a display unit in a device that can reproduce sound and displays text on the display unit has been conventionally known (for example, see Patent Document 2 (Japanese Patent Laid-Open No. 2004-170444)). The device disclosed in Patent Document 2 is a device used for practicing English conversation in particular, in which English text data is displayed on the display unit, and the English voice displayed on the display unit from the speaker. Data is played back. In the device disclosed in Patent Document 2, it is possible to synchronize the audio data to be reproduced and the text data displayed on the display unit, and to associate the text position corresponding to the audio data currently being reproduced. .

JP 2000-57752 A JP 2004-170444 A

  The electronic book used in the electronic book display / playback apparatus in Patent Documents 1 and 2 can change the font size, move to a specific position using preset position information, and start playing. Therefore, it is recognized as an effective information guarantee for students who have difficulty reading paper text. On the other hand, if the font size of the electronic book is changed, the original (paper) and original document electronic data appearance (layout) and the electronic book display / playback device before making the data format usable in the electronic book The above look may be different. For this reason, the display data of the electronic book should include position information such as page and line number so that the character position in the electronic data of the paper book or original document and the character position on the display / playback device can be easily grasped. Is important.

  However, the setting of position information such as page number and line number in the current electronic book display data is manually set after extracting the text character data from the paper book. For this reason, there is a problem that a great work load is imposed on a producer of display data for electronic books.

  Therefore, the present invention is for displaying electronic books that can be automatically assigned page numbers and line numbers when converting electronic data of paper books and documents, which are original document data, into electronic book display data. An object of the present invention is to provide a data creation device and a method for creating display data for electronic books.

  That is, the present invention is an electronic book display data creation device for displaying a specific page of original document data on an electronic book device, wherein the specified page of the original document data is converted into electronic data. Area extraction means for extracting a body area and a page number area from the layout in the digitized data, and character data in each area extracted by the area extraction means, and in the original document specific page digitized data Character data extracting means for extracting the plane coordinate data of each character data, and character data extracted from the page number area by the character data extracting means as page number data, and extracted from the body area by the character data extracting means The page at the specified position in the text data Page number data providing means for assigning issue data, and the body character data in which one coordinate value of the plane coordinate data is within a predetermined range as the same line number group, and the body text for each of the same line number groups An electronic book display data creation device comprising: line number data assigning means for assigning line number data in order from the start point of the region.

  As a result, the page number and line number are automatically added to the body text data when converting a specific page of electronic data of a paper book or document as original document data into electronic book display data for display on the electronic book device. Can be granted automatically.

  Further, the area extraction means is based on at least one information of the size of the character data in the plane coordinate data in the original document specific page digitized data and the original document specific page digitized data. It is preferable that the area and the page number area are identified.

  Thereby, it is possible to appropriately extract the text character data and the page number data from the original document specific page digitized data without mixing them.

  Further, the apparatus further comprises a phrase dividing unit that divides the body character data into phrases and generates a divided phrase, and the line number data adding unit includes a start position or an end point position of the divided phrase at a head position of the same line number group. Is not present, it is preferable that the line number data is added to the start point position or the end point position of the divided phrase at the position closest to the head position of the same line number group.

  As a result, when jumping to a specific line number using the display data of the electronic book, it is possible to always specify the position where the phrase is separated. Therefore, when jumping by designating a line number in the electronic book apparatus, it is possible to provide electronic book display data that makes it easy to understand the meaning of the text and to easily read out the reading position.

  An electronic book display data creation device for displaying a specific page of original document data on an electronic book device, wherein the specific page of the paper book is converted into electronic data and the layout in the original document specific page digitized data And extracting the text data in each area extracted by the area extracting means, and extracting the text area, the page number area, and the line number area in the original document specific page digitized data. Character data extracting means for extracting the plane coordinate data of each character data, and character data extracted from the page number area by the character data extracting means as page number data, and extracted from the body area by the character data extracting means The page number data is added to the specified position of the text data. The page number data adding means to perform the character data extracted from the line number area by the character data extracting means as line number data, and the plane coordinate data of the line number data and the plane coordinate data of the text character data are When a predetermined condition is satisfied, the electronic book display data creation device may further include line number data adding means for adding the line number data in association with the text character data. .

  As a result, the page number and line number are automatically added to the body text data when converting a specific page of electronic data of a paper book or document as original document data into electronic book display data for display on the electronic book device. Can be granted automatically.

  Further, the area extraction means is based on at least one information of the size of the character data in the plane coordinate data in the original document specific page digitized data and the original document specific page digitized data. It is preferable that the area, the page number area, and the line number area are identified.

  This makes it possible to appropriately extract the text character data, page number data, and line number data from the original document specific page digitized data without mixing them.

  Further, the apparatus further comprises a phrase dividing unit that divides the body character data into phrases and generates a divided phrase, and the line number data adding unit includes the plane coordinate data of the line number data and the plane coordinates of the body character data. If the start position or the end position of the divided phrase does not exist at the head position where the data satisfies the predetermined condition, the plane coordinate data of the line number data and the plane coordinate data of the body character data are predetermined. It is preferable that the line number data is added to the start point position or the end point position of the divided phrase at a position closest to the start position of the position that satisfies the condition.

  As a result, when jumping to a specific line number using the display data of the electronic book, it is possible to always specify the position where the phrase is separated. Therefore, when jumping by designating a line number in the electronic book apparatus, it is possible to provide electronic book display data that makes it easy to understand the meaning of the text and to easily read out the reading position.

  An electronic book display data creation method for displaying a specific page of original document data on an electronic book device, wherein the specific page of the original document data is converted into electronic data and the layout in the original document specific page electronic data And extracting the text data in each area extracted by the area extracting step, and extracting the text data in the original document specific page digitized data. Character data extracted from the page number area by the character data extraction step for extracting the plane coordinate data, and the character data extracted from the page number region by the character data extraction step as page number data. The page number data is assigned to a predetermined position of A page number data assigning step, and the body character data in which one coordinate value of the plane coordinate data is within a predetermined range as the same line number group, and the start side of the body area for each of the same line number groups And a line number data assigning step for assigning line number data in order.

  As a result, the page number and line number are automatically added to the body text data when converting a specific page of electronic data of a paper book or document as original document data into electronic book display data for display on the electronic book device. Can be granted automatically.

  Further, the region extracting step is based on the information on at least one of the size of the plane coordinate data in the original document specific page digitized data and the size of the character data in the original document specific page digitized data. It is preferable to identify the area and the page number area.

  Thereby, it is possible to appropriately extract the text character data and the page number data from the original document specific page digitized data without mixing them.

  Further, the method further comprises a phrase dividing step of dividing the body character data into phrases and generating a divided phrase, wherein the line number data adding step includes a start position or an end position of the divided phrase at a head position of the same line number group. Is not present, it is preferable that the line number data is added to the start point position or the end point position of the divided phrase at the position closest to the head position of the same line number group.

  As a result, when jumping to a specific line number using the display data of the electronic book, it is possible to always specify the position where the phrase is separated. Therefore, when jumping by designating a line number in the electronic book apparatus, it is possible to provide electronic book display data that makes it easy to understand the meaning of the text and to easily read out the reading position.

  An electronic book display data creation method for displaying a specific page of original document data on an electronic book device, wherein the specific page of the original document data is converted into electronic data and the layout in the original document specific page electronic data A region extracting step for extracting a body region, a page number region, and a line number region, character data in each region extracted by the region extracting step, and extracting the character data in the original document specific page digitized data Character data extracted from the page number area by the character data extraction step and character data extracted from the body area by the character data extraction step. The page number at a predetermined position in the text data Page number data adding step for assigning data, and character data extracted from the line number region by the character data extracting step as line number data, and the plane coordinate data of the line number data and the text character data of the text data An electronic book display data creation method comprising: a line number data adding step of assigning the line number data in association with the text number data when the plane coordinate data satisfies a predetermined condition. is there.

  As a result, the page number and line number are automatically added to the body text data when converting a specific page of electronic data of a paper book or document as original document data into electronic book display data for display on the electronic book device. Can be granted automatically.

  Further, the region extracting step is based on the information on at least one of the size of the plane coordinate data in the original document specific page digitized data and the size of the character data in the original document specific page digitized data. It is preferable that the area, the page number area, and the line number area are identified.

  This makes it possible to appropriately extract the text character data, page number data, and line number data from the original document specific page digitized data without mixing them.

  Further, the method further includes a phrase dividing step of dividing the body character data into phrases and generating a divided phrase, wherein the line number data adding step includes the plane coordinate data of the line number data and the plane coordinates of the body character data. If the start position or the end position of the divided phrase does not exist at the head position where the data satisfies the predetermined condition, the plane coordinate data of the line number data and the plane coordinate data of the body character data are predetermined. It is preferable that the line number data is added to the start point position or the end point position of the divided phrase at a position closest to the start position of the position that satisfies the condition.

  As a result, when jumping to a specific line number using the display data of the electronic book, it is possible to always specify the position where the phrase is separated. Therefore, when jumping by designating a line number in the electronic book apparatus, it is possible to provide electronic book display data that makes it easy to understand the meaning of the text and to easily read out the reading position.

  According to the configuration of the electronic book display data creation device and the electronic book display data creation method according to the present invention, when converting the paper book as the original document data or the electronic data of the document into the electronic book display data, The page number and line number can be automatically assigned to the text data. As a result, the work load on the creator of the electronic book display data can be greatly reduced, and the electronic book display data with good usability can be provided at low cost.

It is an example of original document specific page digitized data obtained by converting a specific page of a paper book, which is original document data, into electronic data. It is a schematic block diagram of the display data preparation apparatus for electronic books in this embodiment. It is a general | schematic process flow figure of the display data creation method of the electronic book in this embodiment. It is an example of the display data of the electronic book obtained by this embodiment. It is explanatory drawing which shows the state which divided | segmented the text character data of FIG. 4 for every phrase. It is explanatory drawing which shows the state which a part of line number position changed according to the arrangement | positioning state of a division phrase. It is a modification of the original document specific page digitized data obtained by converting the specific page of the paper book as the original document data into electronic data.

  An electronic book display data creation device and an electronic book display data creation method according to the present invention will be described based on embodiments. The present invention uses the original document specific page digitized data OTD as shown in FIG. 1 to convert the display contents in the electronic data of a paper book or document as original document data into display data for the electronic book. This makes it possible to automatically assign page numbers and line numbers to character data.

(First embodiment)
As shown in FIG. 2, an electronic book display data creation apparatus 100 used in the present embodiment includes an area extraction unit 10, a character data extraction unit 20, a page number data adding unit 30, and a line number data adding unit. 40 and phrase dividing means 50. Such an electronic book display data creation device 100 includes a personal computer 90 having a data input means 60, a data output means 62, a storage section 70, and an operation control section 80. The operation control program PGM is installed in the storage section 70. This can be realized.

  The area extraction unit 10 performs layout analysis by an OCR (Optical Character Recognition / Reader) function in the original document specific page digitized data OTD obtained by converting the specific page of the paper book as the original document data as shown in FIG. The text area HR and the page number area PR are extracted respectively. As shown in FIG. 1, line numbers are not described in the original document specific page digitized data OTD in the present embodiment. The original document specific page digitized data OTD in this embodiment is PDF data obtained by scanning a specific page of a paper book.

  The area extracting unit 10 is configured to set the identification condition set in advance based on the character size data and the character arrangement position data included in the PDF data of the specific page of the paper book output to the monitor as the data output unit 62. By comparison, the body region HR and the page number region PR are identified (distinguished) and extracted. Here, the character size data and the plane coordinate data in the PDF data of each character data (position data of the character data in the PDF data) are used as the identification condition, but only one of them is used as the identification condition. Also good. In the present embodiment, the horizontal direction in the PDF data as the original document specific page digitized data OTD (the horizontal direction in the state displayed in the default state on the monitor as the data output means 62) is the x-axis direction, and the PDF data The vertical direction is the y-axis direction, and the respective coordinate values are used as plane coordinate data in the PDF data.

  In the present embodiment, when the layout analysis of PDF data is performed, the region extraction unit 10 extracts a data region that does not include character size data and includes only plane coordinate data in the PDF data as an image region GR.

  The creator of the electronic book display data can also individually designate the specific areas as the body area HR, the page number area PR, and the image area GR by manual operation using the mouse and keyboard as the data input means 60. In this case, the area extraction unit 10 is realized by the data input unit 60. As described above, the region extraction means 10 can perform either the automatic extraction process or the manual extraction process.

  The character data extracting means 20 extracts character data in the body area HR and page number area PR extracted by the area extracting means 10. The character data extraction processing from the body region HR and the page number region PR can use character recognition processing by the OCR function. When character data is extracted from the text area HR and the page number area PR by the character data extraction means 20, the plane coordinate data in the PDF data as the original document specific page digitized data OTD (hereinafter simply referred to as PDF data) The plane coordinate data) is also extracted at the same time. Thus, the character data extracted by the character data extraction means 20 has text data and plane coordinate data.

  The character data extraction means 20 stores the character data extracted from the text region HR in the storage unit 70 as the text character data HMD. In the case where character data is included in the image area GR, the character data extracting means 20 reads the character data extracted from the image area GR together with the plane coordinate data in the PDF data of each character data, and the in-image character data GMD. Can be stored in the storage unit 70 in a state linked to the image data GD. The image data GD can be extracted from the image region GR by the operation control unit 80 as an image data extracting unit. The extracted image data GD is stored in the storage unit 70 in a state where the plane coordinate data in the PDF data is linked.

  The page number data adding unit 30 sets the character data extracted from the page number region PR by the character data extracting unit 20 as page number data PBD, and adds the page number data PBD to a predetermined position of the text character data HMD. Here, the page number data PBD is assigned to the head position of the body text data HMD, but the page number data PBD may be attached to the end position of the body text data HMD.

  The line number data giving means 40 is a single number in which one coordinate value (x coordinate value or y coordinate value) of the plane coordinate data in the PDF data in the text character data HMD is the same value or within a predetermined range centered on the value. Alternatively, a plurality of text character data HMD are set to the same line number group GBG, and line number data GBD is assigned to each of the same line number group GBG in order from the start point side of the text area HR. Here, the line number data GBD is arranged at the head position of the same line number group GBG.

  The line number data assigning means 40 may set the same line number group GBG by the line cutout process in the OCR function and execute the process of assigning the line number data GBD from the arrangement state of the lines cut out from the body area HR. In the present embodiment, the line number data assigning means 40 sets the line number data to a multiple of 5, but it is also possible to assign the line number data GBD to each same line number group GBG with a natural number from 1.

  The phrase dividing means 50 divides the text character data HMD for each phrase and generates a divided phrase BF. Here, a phrase refers to a unit when a sentence or clause is analyzed syntactically. Specifically, an infix phrase, a noun phrase, a verb phrase, an adjective phrase (combined phrase), and an adverb phrase can be shown.

  When the divided phrase BF is generated by the phrase dividing means 50, the line number data adding means 40, if the start position or the end position of the divided phrase BF does not exist at the head position of the same line number group GBG, The line number data GBD may be added to the start point position or the end point position of the divided phrase BF at the position closest to the head position of the group GBG. With such a form, the layout of the line number and page number may be different from the layout in the original document specific page digitized data OTD, but jumped (random access) to the page number data PBD or the line number data GBD. In some cases, it is easier to understand the meaning of the sentence. Further, it is advantageous in that it can be read easily when reading aloud. Note that the configuration of the phrase dividing unit 50 is additional, and the configuration of the phrase dividing unit 50 may be omitted.

  The area extracting unit 10, character data extracting unit 20, page number data adding unit 30, line number data adding unit 40, and phrase dividing unit 50 described above are based on the operation control program PGM stored in advance in the storage unit 70. The operation control unit 80 (for example, the CPU of the personal computer 90) can also be realized.

  Next, an electronic book display data creation method using the electronic book display data creation apparatus 100 according to the first embodiment will be described with reference to FIG.

  First, in the personal computer 90 in which the electronic book display data creation device 100 is mounted, the operation control unit 80 causes the PDF data that is the original document specific page digitized data OTD to be output to the monitor that is the data output means 62. Next, the operation control unit 80 as the region extracting unit 10 executes a layout analysis process of the OCR function on the PDF data output to the monitor, and extracts the body region HR, the page number region PR, and the image region GR (region). Extraction process). In such a processing step of extracting the body region HR, the page number region PR, and the image region GR, the creator of the electronic book display data operates the mouse and keyboard as the data input means 60, and the creator The text area HR, the page number area PR, and the image area GR may be directly extracted from within by manual operation.

  Next, the operation control unit 80 as the character data extracting unit 20 extracts the character data from the body region HR and the page number region PR extracted by the region extracting unit 10, and the plane in the PDF data in the extracted character data. Coordinate data is extracted (character data extraction step). Since such a character data extraction process can be realized by the OCR function, a detailed description thereof is omitted here. The extracted character data is stored in the storage unit 70 in a state where the character size data and the plane coordinate data in the PDF data are linked. At this time, the character data extracted from the body region HR is stored in the storage unit 70 as body character data HMD, and the character data extracted from the page number region PR is stored as page number data (character data extraction step).

  When the image region GR is extracted in the region extraction step, the operation control unit 80 extracts the image data GD from the image region GR, and stores it in the storage unit 70 in a state of being associated with the plane coordinate data in the PDF data. What is necessary is just to add the image extraction process to memorize | store. When the image extraction process is performed, the operation control unit 80 as the character data extraction unit 20 determines whether or not there is character data in the image data GD and includes character data. In addition to extracting the in-image character data GMD, an in-image character data extracting step of storing the image data GD and the plane coordinate data of the image data GD in the storage unit 70 may be further added.

  The operation control unit 80 stores, as page number data PBD, character data stored in the storage unit 70 that has a smaller character size than the character size associated with other character data. May be stored. Also, the x coordinate value or y coordinate value of the plane coordinate data in the PDF data linked to the character data, and the x coordinate value or y of the plane coordinate data in the PDF data linked to other character data. When the difference from the coordinate value is greater than or equal to a preset value, the x coordinate value of the plane coordinate data in the PDF data linked to the character data is the right end position in the PDF data, its vicinity, and the central position. And the vicinity, the left end position, and the value in the vicinity thereof, any of the cases where the range of the x coordinate value of the plane coordinate data in the PDF data linked to the character data is within a preset range The character data may be stored in the storage unit 70 as page number data PBD. Here, “the vicinity” means a position within a range of values set in advance with respect to a reference value (the same applies hereinafter).

  Furthermore, these identification processes may be combined and stored in the storage unit 70 as page number data PBD. At this time, the character data GMD in the image can be excluded from the comparison target of the plane coordinate data in the PDF data associated with the character size and the character data. By adopting the character data extraction process as described above, it is possible to omit the process of distinguishing the body area HR and the page number area PR in the area extraction process.

  Next, the operation control unit 80 as the page number data assigning unit 30 assigns the page number data PBD stored in the storage unit 70 in the character data extraction step to a predetermined position of the text character data HMD in the PDF data (page number). Data grant process). Here, page number data PBD is added to the header position of body text data HMD in the PDF data.

  Next, the operation control unit 80 as the line number data adding unit 40 has the x coordinate value or the y coordinate value of the plane coordinate data in the PDF data of the text character data HMD stored in the storage unit 70 as the same value or the value thereof. Is stored in the storage unit 70 as the same line number group GBG. In the PDF data, if the line cut out by the line cut-out process extends in the x direction (horizontal writing), the x coordinate values are compared, and if the cut out line extends in the y direction (vertical writing), y What is necessary is just to compare a coordinate value. In this way, line number data GBD is assigned to each of the same line number group GBG determined based on the plane coordinate data in the PDF data in order from the start point side of the body area HR (line number data). Application step).

  In addition, the operation control unit 80 reads the image data GD stored in the storage unit 70 together with the plane coordinate data associated with the image data GD, and adds an image embedding process for embedding in a predetermined position of the text character data HMD. You can also

  By executing the above procedure, the layout of the original PDF data (original document specific page digitized data OTD) is faithfully maintained, and the electronic book as shown in FIG. Display data DHD can be obtained. The electronic book display data DHD obtained in this way is stored in the storage unit 70 as text data conforming to the HTML format or the XML format.

  The operation control unit 80 as the phrase dividing unit 50 performs a process (phrase dividing step) for generating a divided phrase BF by dividing each body character data HMD stored in the storage unit 70 for each phrase. It can also be executed between the assigning step and the line number data assigning step. FIG. 5 is an explanatory diagram showing a state in which the text character data HMD of the display data DHD for the electronic book shown in FIG. 4 is divided for each divided phrase BF. Note that the numbers given to the divided phrases BF in FIG. 5 are serial numbers from the head side of the divided phrases BF in the text character data HMD in the PDF data (original document specific page digitized data OTD). .

  When the text character data HMD is divided into divided phrases BF, the line number data adding step is performed when the start position or the end position of the divided phrase BF at the head position of the same line number group GBG does not exist. A process of assigning line number data GBD to the start point position or the end point position of the divided phrase BF at the position closest to the head position is executed.

  FIG. 6 shows display data DHD for an electronic book obtained by executing the line number data adding step after such a phrase dividing processing step. The display data DHD for the electronic book shown in FIG. 6 is slightly different from the layout of the PDF data which is the original data (the divided phrases at the positions 5 and 15 of the line number data GBD with respect to the layout of FIG. 5). BF position may be different). However, in the electronic book display device to which the electronic book display data DHD is applied, when jumping is performed by specifying a line number, it is easy to determine when the meaning of the sentence is understood or when the sentence is read (easy to read) ) Is advantageous in that it can be positioned.

  The operation control unit 80 generates DAISY book data, which is the final electronic book display data DHD, based on the text data shown in FIG. 4 or FIG. The generation process of the electronic book display data DHD in FIG.

(Second Embodiment)
The basic configuration of the electronic book display data creation device 100 in this embodiment is the same as that of the first embodiment. In the electronic book display data creation device 100 of the present embodiment, the data handling contents (data processing contents) by the area extracting means 10 and the line number data adding means 40 are different, but other configurations are the first embodiment. Since the data is handled in the same way as in FIG.

  As shown in FIG. 7, the area extracting means 10 in the present embodiment differs from the first embodiment in that the line number area LR is automatically extracted in addition to the text area HR, the page number area PR, and the image area GR. ing. Such a configuration is advantageous when a line number is assigned to the original document specific page digitized data OTD obtained by converting the specific page of the paper book as shown in FIG. 7 into digital data. In the present embodiment, the description will be made based on the form using PDF data as the original document specific page digitized data OTD.

  The area extraction means 10 can extract the body area HR, the page number area PR, the image area GR, and the line number area LR by analyzing the layout of the original PDF data. The text area HR can be extracted by searching for an area having a large area range (difference between the maximum value and the minimum value of the plane coordinate data) and a large character size. The page number region PR has a small character size, a small range of plane coordinate data in the PDF data (included in the range of preset plane coordinate data), and a corner portion (x Coordinate value and y coordinate value are near maximum value, x coordinate value is near maximum value and y coordinate value is near minimum value, x coordinate value is near minimum value, y coordinate value is near maximum value, x coordinate value and y coordinate value By searching for a region that is only in the vicinity of the minimum value) or in the upper and lower central parts (the x coordinate value is the average value of all the x coordinate values or the y coordinate value is near the maximum value or near the minimum value) It can be extracted (when the body area HR has a horizontal layout).

  The extraction of the line number region LR has a small character size, and the x coordinate value in the planar coordinate data in the PDF data is the same value or within a predetermined range centered on the value, and the y coordinate value becomes a constant interval. Automatic extraction can be performed by searching a plurality of areas. Alternatively, similarly to the first embodiment, the creator of the display data can specify the body area HR, the page number area PR, and the line number area LR using a mouse or a keyboard.

  The line number data assigning means 40 in the present embodiment differs from the first embodiment in that the data handling contents are different from the first embodiment in that character data (numbers) extracted from the line number area LR is used as the line number data GBD. The line number data assigning means 40 in the present embodiment has a y coordinate value that is the same as the y coordinate value of the plane coordinate data in the line number data GBD or a predetermined range centered on that value (the plane of the line number data GBD). The line number data GBD is given to the body character data HMD (coordinate data and the plane coordinate data of the body character data HMD satisfy a predetermined condition).

  The line number data assigning means 40 divides a plurality of continuous text character data HMD, and the head position of the text character data HMD to be assigned the line number data GBD (the y coordinate value of the plane coordinate data is the same value or A process of embedding the line number data GBD at a position immediately before the text character data HMD having the smallest x coordinate value of the plane coordinate data among the text character data HMD within a predetermined range centering on the value is executed.

  Further, the line number data assigning means 40 in this embodiment sets the same line number group GBG by the line cutout process in the OCR function in the same manner as in the first embodiment, and is the same value as the y coordinate value of the same line number group GBG. Or you may perform the process which provides the line number data GBD extracted from the line number area | region LR to the same line number group GBG which has y coordinate value within the predetermined range centering on the value.

  Similarly, the line number data assigning means 40 sets the same line number group GBG by the line cutout process in the OCR function, and executes the process of additionally giving the line number data GBD from the arrangement state of the lines cut out from the body area HR. May be. As a result, even when the line number data GBD extracted from the line number area LR is only a multiple of 5, the line number data GBD may be given as a natural number from 1 to the display data DHD for electronic books. it can.

  Next, an electronic book display data creation method using the electronic book display data creation apparatus 100 according to the second embodiment will be described.

  First, as in the first embodiment, in the personal computer 90 in which the electronic book display data creation device 100 is mounted, the operation control unit 80 outputs PDF data as the original document specific page digitized data OTD as data output means. The output is output to the monitor 62. Next, the operation control unit 80 serving as the region extracting unit 10 performs a layout analysis process of the OCR function on the PDF data output to the monitor, and the body region HR, the page number region PR, the image region GR, and the line number region LR. Are extracted (region extraction step). The process of extracting the body area HR, the page number area PR, the image area GR, and the line number area LR is performed by the creator of the electronic book display data operating the mouse and keyboard as the data input means 60, The creator may directly extract the body area HR, the page number area PR, and the line number area LR from the PDF data by manual operation.

  Next, the operation control unit 80 as the character data extraction unit 20 extracts the character data from the body region HR, the page number region PR, the image region GR, and the line number region LR extracted by the region extraction unit 10 and extracts them. The plane coordinate data in the PDF data in the character data thus extracted is extracted (character data extraction step). Since such a character data extraction process can be realized by the OCR function, a detailed description thereof is omitted here. The configuration of the plane coordinate data in the PDF data here is the same as in the first embodiment. The extracted character data is stored in the storage unit 70 in a state where the character size data and the plane coordinate data in the PDF data are linked. At this time, the character data extracted from the text region HR is the text character data HMD, the character data extracted from the page number region PR is the page number data PBD, and the character data extracted from the image region GR is the in-image character data. Character data extracted from the line number area LR as GMD is stored in the storage unit 70 as line number data GBD (character data extraction step).

  When the positions of the body region HR and the line number region LR are close to each other, the operation control unit 80 is based on at least one of the character size data and the plane coordinate data of the body character data HMD and the line number data GBD. Both data can be identified.

  Specifically, the text area HR can be an area where the range of the plane coordinate data (the difference between the maximum value and the minimum value of the plane coordinate data) is large and the character size is large. The page number region PR has a small character size, a small range of plane coordinate data in the PDF data (included in a preset range), and a corner portion (x coordinate value) of the entire range of the plane coordinate data. Y coordinate value is near the maximum value, x coordinate value is near the maximum value, y coordinate value is near the minimum value, z coordinate value is near the minimum value, y coordinate value is near the maximum value, x coordinate value and y coordinate value are minimum It can be a region only in one of the vicinity of the value). The line number area LR has a small character size, the x coordinate value of the plane coordinate data in the PDF data is the same value or within a predetermined range centered on the value, and the y coordinate value is at a constant interval. Can be a plurality of areas (in the case of horizontal writing layout). Such an identification method is particularly advantageous in that it can prevent data mixing of ruby and line number data GBD in the text character data HMD.

  Next, the operation control unit 80 as the page number data assigning unit 30 assigns the page number data PBD stored in the storage unit 70 in the character data extraction step to a predetermined position of the text character data HMD in the PDF data (page number). Data grant process). Here, page number data PBD is added to the header position of body text data HMD in the PDF data.

  In addition, the operation control unit 80 reads the image data GD stored in the storage unit 70 together with the plane coordinate data associated with the image data GD, and adds an image embedding process for embedding in a predetermined position of the text character data HMD. You can also

  Next, the operation control unit 80 as the line number data adding unit 40 has the x coordinate value or the y coordinate value of the plane coordinate data in the PDF data of the text character data HMD stored in the storage unit 70 as the same value or the value thereof. Is stored in the storage unit 70 as the same line number group GBG. In the PDF data, if the line cut out by the line cut-out process extends in the x direction (horizontal writing), the x coordinate values are compared, and if the cut out line extends in the y direction (vertical writing), y What is necessary is just to compare a coordinate value. Each of the same line number group GBG determined based on the plane coordinate data in the PDF data in this way is compared with the y coordinate value of the line number data GBD stored in the storage unit 70. The line number data GBD is assigned to the head position of the same line number group GBG in which both y coordinate values are the same value or within a predetermined range centered on the value (line number data adding step).

  As described above, the electronic book display data DHD as shown in FIG. 4 in which the layout of the PDF data (original document specific page digitized data) which is the original data is faithfully maintained can be obtained. The electronic book display data DHD obtained in this way is stored in the storage unit 70. If necessary, as in the first embodiment, the line number data assigning step is executed after the phrase dividing step after the page number assigning step, and the electronic book display data DHD as shown in FIG. 6 is obtained. May be.

  In the electronic book display data creation device 100 and the electronic book display data creation method in the above embodiment, PDF data is used as original document specific page digitized data OTD obtained by converting a specific page of a paper book into electronic data. However, it is not limited to this form. For example, it is also possible to use electronic data that is document data including character information and position information, as represented by PDF data from the beginning, not obtained by scanning so-called paper data.

  In the above embodiment, the form in which the original document specific page digitized data OTD has a horizontal layout has been described. However, a vertical layout and a mixed layout of a horizontal layout and a vertical layout can be similarly handled. Can do. In the handling of plane coordinate data for the vertical writing layout, the comparison of the x coordinate values in the description of the data processing for the horizontal writing layout in this embodiment is replaced with the comparison of the y coordinate values, and the comparison of the y coordinate values is compared with the comparison of the x coordinate values. And the comparison with the plane coordinate data in the PDF data.

  Moreover, in the above embodiment, although the example which includes the phrase division | segmentation means 50 and a phrase division | segmentation process is demonstrated, since the phrase division | segmentation means 50 and a phrase division | segmentation process are not the essential structures of this invention, they may be abbreviate | omitted. it can.

  Further, in the case where the line number data adding unit 40 in the second embodiment includes the phrase dividing unit 50, the plurality of continuous body character data HMD is divided, and the body character data to be provided with the line number data GBD is divided. Immediately before the head position of the HMD (the body character data HMD having the smallest x-coordinate value of the plane coordinate data among the body character data HMD having the same y-coordinate value of the plane coordinate data or within a predetermined range centered on the value) Although the line number data GBD is embedded at the position, the line number data GBD may be embedded immediately after the position. In short, if there is no start or end position of the divided phrase BF at the start position of the same line number group GBG, the start position or end position of the divided phrase BF at the position closest to the start position of the same line number group GBG is set. The line number data GBD may be given.

  Furthermore, with respect to the configuration in the above-described embodiment, it is possible to adopt a form in which modifications described in the specification and other known configurations are appropriately combined.

DESCRIPTION OF SYMBOLS 10 Area extraction means 20 Character data extraction means 30 Page number data provision means 40 Line number data provision means 50 Phrase division means 60 Data input means 62 Data output means 70 Storage part 80 Operation control part 90 Personal computer 100 Data for display of electronic books Creation device OTD Original document specific page digitized data PGM Operation control program HR Body area PR Page number area GR Image area HMD Body character data GMD In-image character data PBD Page number data GBG Same line number group GBD Line number data BF Division phrase GD Image data DHD Electronic book display data LR Line number area

Claims (12)

An electronic book display data creation device for displaying a specific page of original document data on an electronic book device,
Area extracting means for extracting a body area and a page number area from the layout of the original document specific page digitized data obtained by converting the specific page of the original document data into electronic data;
Character data extracting means for extracting character data in each area extracted by the area extracting means and extracting plane coordinate data of each character data in the original document specific page digitized data;
Character data extracted from the page number area by the character data extraction means is used as page number data, and the page number data is given to a predetermined position of the text character data extracted from the text area by the character data extraction means Number data providing means;
The body text data in which one coordinate value of the plane coordinate data is within a predetermined range is set to the same line number group, and line number data is assigned to each of the same line number groups in order from the start point side of the body area. Line number data assigning means to perform,
An electronic book display data creation device characterized by comprising: The region extracting means includes
Based on the information of at least one of the plane coordinate data in the original document specific page digitized data and the size of the character data in the original document specific page digitized data, the body area and the page number area 2. The electronic book display data creation device according to claim 1, wherein identification is performed. Phrase dividing means for dividing the body text data into phrases and generating divided phrases,
The line number data giving means is
If the start position or end position of the divided phrase does not exist at the start position of the same line number group, the start position or the end position of the divided phrase at the position closest to the start position of the same line number group 3. The electronic book display data creation apparatus according to claim 1, wherein line number data is added. An electronic book display data creation device for displaying a specific page of original document data on an electronic book device,
Area extracting means for extracting a body area, a page number area, and a line number area from the layout in the original document specific page digitized data obtained by digitizing the specific page of the paper book;
Character data extracting means for extracting character data in each area extracted by the area extracting means and extracting plane coordinate data of each character data in the original document specific page digitized data;
Character data extracted from the page number area by the character data extraction means is used as page number data, and the page number data is given to a predetermined position of the text character data extracted from the text area by the character data extraction means Number data providing means;
When the character data extracted from the line number area by the character data extraction means is line number data, and the plane coordinate data of the line number data and the plane coordinate data of the text character data satisfy a predetermined condition, the text Line number data giving means for giving the line number data corresponding to the character data;
An electronic book display data creation device characterized by comprising: The region extracting means includes
Based on the information of at least one of the plane coordinate data in the original document specific page digitized data and the size of the character data in the original document specific page digitized data, the body area, the page number area, and the 5. The electronic book display data creation device according to claim 4, wherein the line number area is identified. Phrase dividing means for dividing the body text data into phrases and generating divided phrases,
The line number data giving means is
When the plane coordinate data of the line number data and the plane coordinate data of the text character data do not satisfy the start position or the end position of the divided phrase at the start position of the position satisfying a predetermined condition, the line number data Adding the line number data to the start point position or the end point position of the divided phrase at a position closest to the start position of the position where the plane coordinate data of the text data and the plane coordinate data of the text character data satisfy a predetermined condition. 6. The electronic book display data creation device according to claim 4 or 5. An electronic book display data creation method for displaying a specific page of original document data on an electronic book device,
An area extracting step for extracting a body area and a page number area from the layout in the original document specific page digitized data obtained by converting the specific page of the original document data into electronic data;
Character data extraction step for extracting character data in each region extracted by the region extraction step and extracting plane coordinate data of each character data in the original document specific page digitized data,
Character data extracted from the page number area by the character data extraction step is used as page number data, and the page number data is given to a predetermined position of the text character data extracted from the text region by the character data extraction step Number data giving process;
The body text data in which one coordinate value of the plane coordinate data is within a predetermined range is set to the same line number group, and line number data is assigned to each of the same line number groups in order from the start point side of the body area. A line number data assigning step to be performed;
A method for creating data for displaying electronic books. The region extraction step includes
Based on the information of at least one of the plane coordinate data in the original document specific page digitized data and the size of the character data in the original document specific page digitized data, the body area and the page number area 8. The electronic book display data creation method according to claim 7, wherein identification is performed. Further comprising a phrase dividing step of dividing the body text data for each phrase to generate a divided phrase;
The line number data giving step includes
If the start position or end position of the divided phrase does not exist at the start position of the same line number group, the start position or the end position of the divided phrase at the position closest to the start position of the same line number group 9. The method for creating electronic book display data according to claim 7, wherein line number data is added. An electronic book display data creation method for displaying a specific page of original document data on an electronic book device,
A region extracting step of extracting a body region, a page number region, and a line number region from the layout in the original document specific page digitized data obtained by converting the specific page of the original document data into electronic data;
Character data extraction step for extracting character data in each region extracted by the region extraction step and extracting plane coordinate data of each character data in the original document specific page digitized data,
Character data extracted from the page number area by the character data extraction step is used as page number data, and the page number data is given to a predetermined position of the text character data extracted from the text region by the character data extraction step Number data giving process;
When the character data extracted from the line number area in the character data extraction step is line number data, and the plane coordinate data of the line number data and the plane coordinate data of the body character data satisfy a predetermined condition, the body text A line number data assigning step for assigning the character number data in association with the line number data;
A method for creating data for displaying electronic books. The region extraction step includes
Based on the information of at least one of the plane coordinate data in the original document specific page digitized data and the size of the character data in the original document specific page digitized data, the body area, the page number area, and the 11. The electronic book display data creation method according to claim 10, wherein line number areas are identified. Further comprising a phrase dividing step of dividing the body text data for each phrase to generate a divided phrase;
The line number data giving step includes
When the plane coordinate data of the line number data and the plane coordinate data of the text character data do not satisfy the start position or the end position of the divided phrase at the start position of the position satisfying a predetermined condition, the line number data Adding the line number data to the start point position or the end point position of the divided phrase at a position closest to the start position of the position where the plane coordinate data of the text data and the plane coordinate data of the text character data satisfy a predetermined condition. 12. The electronic book display data creation method according to claim 10 or 11.

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