JP2008077197A - Image processing apparatus, image processing method, image processing program and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image processing apparatus and method automatically classifying data and, when necessary, adding update information, when storing document images in a storage means with classification information added thereto based on specific partial images. <P>SOLUTION: The image processing apparatus, which detects a specific partial image added to a surface to be processed from an image read from the surface to be processed and a back image read from the surface opposite thereto and stores the image read from the surface to be processed in the storage means with classification information added thereto, is provided with a data classification means for applying the data classification to the image of the surface to be processed in accordance with the specific partial image. If the image read from the surface to be processed is an updated image, update information is added to the classification information for storage. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides an image processing apparatus, an image processing method, and an image processing method for detecting a specific partial image that is read out by reading a document image, adding classification information to the document image based on the specific partial image, and storing it in a storage unit. The present invention relates to a program and a recording medium.

  In an image processing apparatus such as a copying machine, a document image is read by a scanner or the like and stored in a storage unit, transmitted to another apparatus, or recorded on a recording sheet (image formation). Document images handled in the company include specific images (parts) such as stamps and seals that can specify the type of document, such as the document creator, issue department, presentation destination (individual, department, company, etc.), issue date, etc. In many cases, the image is manually recorded using ink (red ink or the like) or vermilion. On the other hand, in a document formed with an image by a recent printer, copying machine, facsimile machine, or the like, the recorded information (image) hardly appears on the back side of the recording paper. Therefore, by detecting an image such as a stamp, it is possible to determine what kind of document is to some extent.

  Conventionally, as a technique for processing an original image based on an original image, for example, in Japanese Patent Application Laid-Open No. H10-293400, an image of a processing target surface (front surface) of a document to which a specific image such as the above-described stamp is attached. It has been proposed to determine that a document is a specific document by reading and detecting a show-through image of a specific image such as a stamp from the opposite surface (back surface). Based on the determination result, the output of the image of the designated processing target surface (copying to a recording sheet, transmission to a designated destination, etc.) can be restricted.

  FIG. 6 is a diagram schematically showing an example (a front surface and a back surface) of an original document with a predetermined stamp. Here, FIG. 6A shows the front surface (surface to be processed), and FIG. 6B shows the back surface (opposite surface). As shown in FIG. 6, recording information (stamp image or the like) by manual operation using ink is usually reflected to the back side of the document (the side opposite to the processing target surface). That is, in most cases, it can be said that the image that appears on the opposite side of the processing target surface of the document is only a show-through image such as a stamp image, and a specific partial image (such as a stamp image) is the other image on the opposite side image. Need not be identified and extracted. Further, it is possible to determine a specific document without erroneous determination by a simple calculation process with a low calculation load without determining a position to attach a specific image such as a stamp indicating that the document is a specific document. Has been.

  Further, in an image processing apparatus having a function of storing an image read from a document in a storage unit such as a hard disk, when a large number of images (image data) are stored, a target image can be easily selected from them. It is desired to be able to choose. For this reason, in a conventional image processing apparatus, when reading an image, the read image is stored with a folder name or classification information (attribute information, title, etc.) through a predetermined operation input means, or a specified folder name or It is stored in association with classification information.

As a result, a file system that manages the storage destination of image data in units of folders, a database system that searches target image data from a database associated with each classification information, and the like from among a plurality of stored images. Images to be accessed can be easily selected.
JP 2005-150976 A

  However, in order to classify the read image (original image) with a file name so that the target image can be easily selected from a plurality of stored images and store it in the storage means, a plurality of images are stored in advance. Setting the folder and specifying the folder to be stored each time the document is read, and the cumbersome operation of inputting the classification information every time the document is read are necessary. There was a point.

  Further, even when a specific image is detected using a show-through image disclosed in Patent Document 1 and a specific document is determined, the document image may be read again after being once read and attached with folder and classification information. is there. In this case, when the image is read again, the specific image detected from the show-through image is different from the previous reading by adding a mark or a stamp. In such a case, there is a problem that a new folder or classification information is added again and stored as a different one although it is the same original image as the previously read original.

  The present invention has been made in view of the above circumstances, and automatically performs data classification processing when adding classification information to a document image based on a specific partial image and storing it in a storage means. In addition, an object is to provide an image processing apparatus, an image processing method, an image processing program, and a recording medium in which update information is added and stored.

  An image processing apparatus and method according to the present invention detects a specific partial image attached to a processing target surface from an image read from the processing target surface of the document and a show-through image read from the opposite surface of the processing target surface. The image processing apparatus adds classification information to an image read from the processing target surface and stores it in a storage unit. Data classification means for performing data classification processing on the image of the processing target surface based on the specific partial image, and when the image read from the processing target surface is an updated image, update information is added to the classification information And memorize it.

  The data classification process includes a process of attaching classification information to the image on the processing target surface based on the specific partial image, and includes a process of associating the specific partial image with the classification information and storing it as a database. Further, when the image read from the processing target surface is an image for which access is restricted as a result of the data classification process, the access is restricted by the access restriction means.

  According to the present invention, after detecting a show-through image of the surface opposite to the processing target surface of the document, a specific partial image (an image such as a stamp) on the processing target surface is detected, and the classification information is based on the specific partial image. Since the data classification process of adding is automatically performed, the classification can be performed without causing the user to input. Further, when a specific partial image of a document is changed, it is processed as an updated image, so that the same document image is not processed as another document image.

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram for explaining the outline of the image processing apparatus according to the present invention, and FIG. 2 is a view for explaining the outline of the periphery of the image reading unit of the image processing apparatus.
As shown in FIG. 1, an image processing apparatus X according to the present invention includes a communication unit 11a, a line control unit 11b, an operation / display unit 12, a first image memory 13a, a second image memory 13b, a storage memory 14, and a control unit. 15, a first image reading unit 16a, a second image reading unit 16b, an image processing unit 17, a printing unit 18, a paper feeding unit 19, and the like.

  The communication unit 11a performs communication control with a predetermined host device via a communication line, and reads target surface image data (hereinafter referred to as target surface image data) read by a first image reading unit 16a described later. This is transmitted to the host device. The line control unit 11b performs communication control via a public line (telephone line), and transmits target surface image data to a destination facsimile apparatus. The operation / display unit 12 is an input / output unit and a display unit including a liquid crystal touch panel or the like for executing the image processing of the present invention. The first image memory 13a and the second image memory 13b include target surface image data read by the first image reading unit 16a and image data of the opposite surface read by the second image reading unit 16b described later (hereinafter referred to as the opposite surface). Storage means including a RAM or the like for temporarily storing image data).

  The storage memory 14 stores various setting information (including preset image information and the like) and target plane image data in the file system 25, and includes a large-capacity hard disk device that stores various databases 26. It is a storage means. The control unit 15 includes a CPU and peripheral devices (ROM, RAM, etc.), and controls the image processing device X by executing processing according to a predetermined program stored in the ROM. Data classifying means 23 and data updating means 24 are provided.

  The first image reading unit 16a and the second image reading unit 16b are image reading means for reading an image from each of the processing target surface (front surface) and the opposite surface (back surface) of the document. The image processing unit 17 includes a ROM in which a predetermined image processing program is stored and a DSP (Digital Signal Processor) that executes the program. The image processing unit 17 performs shading correction of read image data and detection of a stamp image included in the image. Various image processing such as processing is performed. The image processing unit 17 includes a show-through image detection unit 21 and a partial image detection unit 22 used in the present invention. The printing unit 18 forms the image on recording paper based on the target surface image data, and the paper feeding unit 19 supplies the recording paper to the printing unit 18.

  As shown in FIG. 2, the image processing apparatus X includes a first image reading unit 16a that reads an image from a processing target surface (a surface on which an image to be stored or copied) is formed, and a processing target surface. A second image reading unit 16b that reads an image on the opposite side (a show-through image) is provided independently. When a user places a document on the document setting tray 31, the document detection sensor 32 detects that the document has been set. Then, when a predetermined reading start operation is performed from the operation / display unit 12, the document is pulled out one by one by the pickup roller 33, and the document is transported to the platen glass 36 through the baffle plate 34 and the transport roller 35. Next, the original is conveyed one by one on the platen glass 36 in the sub-scanning direction and finally discharged onto the paper discharge tray 37.

  At this time, the first image reading unit 16a reads the front surface (lower surface) of the document. The first scanning unit 39 of the first image reading unit 16a is moved and positioned, the second scanning unit 40 is positioned at a predetermined position, and the surface of the document is platen glass by the exposure lamp of the first scanning unit 39. 36, the reflected light of the document is guided to the imaging lens 38 by the reflection mirrors of the first and second scanning units 39 and 40, and the reflected light of the document is guided by the imaging lens 38 to the CCD (Charge Coupled Device). And the first image reading unit 16a is focused to form an image of the front surface of the document on the CCD, thereby reading the image of the front surface of the document.

  Further, the back side (upper side) of the document is read by the second image reading unit 16b. The second image reading unit 16a is disposed above the platen glass 36, and exposes the reflected light of the document for each exposure lamp (LED (Light Emitting Diode) array, fluorescent lamp, etc.) that irradiates the back side of the document. It includes a self-focusing lens array that collects light, a contact image sensor (CIS) that photoelectrically converts reflected light of the original received through the self-focusing lens array, and outputs an analog image signal.

  Further, it is possible to open the upper housing and place the document on the platen glass 36, and in this state, the first image reading unit 16a can read the front surface of the document. In this case, the first and second scanning units 39 and 40 are moved in the sub-scanning direction while maintaining a predetermined speed relationship with each other, the original on the platen glass 36 is exposed by the first scanning unit 39, and the first The reflected light from the document is guided to the imaging lens 38 by the second scanning units 39 and 40, and the image of the document is imaged on the CCD of the first image reading unit 16a by the imaging lens 38.

  The input light information is photoelectrically converted, and the image information signal converted into an electrical signal is input to the image processing unit 17 and processed. The second image reading unit 16 b is a contact-type image reading sensor with a built-in light source and CCD, and outputs an image information signal obtained by converting image information on the opposite side of the document into an electrical signal, which is output to the image processing unit 17. Input and processed. The image data processed by the image processing unit 17 is temporarily stored in the first image memory 13a and the second image memory 13b, respectively.

  In FIG. 2, the first image reading unit 16a and the second image reading unit 16b are arranged at positions almost opposite to each other, and are configured to read an image from a document almost simultaneously. It is also possible to employ a configuration in which reading is performed in parallel with the reading timing being shifted. Further, although the reading time is somewhat longer, only one of the first image reading unit 16a and the second image reading unit 16b is provided, and the images on both sides of the document are sequentially read by providing a document reverse conveyance mechanism. You can configure it.

  In the image processing apparatus X, a predetermined document reading / storing process is started through the operation / display unit 12, and the first image reading unit 16a and the second image reading unit 16a perform processing on the processing target surface and the opposite surface of the document. An image reading process is executed. Next, the show-through image detection means 21 detects a show-through image existing in the image based on the opposite surface image data obtained by the second image reading unit 16b. Thereafter, based on the target surface image data read by the first image reading unit 16a, the partial image detecting means 22 determines the position of the show-through image detected on the opposite surface from the image (image of the processing target surface). Partial images that exist in the corresponding position (back position), that is, images that show-through like stamps or seals that are the source of show-through, or handwritten signatures or illustrations with sign pens (hereinafter, images such as stamps) Is detected).

  Based on the specific partial image (an image such as a stamp), data classification processing is performed by the data classification unit 23 or the data update unit 24 of the control unit 15 with reference to the database 26 in the storage memory 14. As a result, the classification information is added to the image of the processing target surface and stored in a predetermined file of the file system 25.

Next, details will be described in which a specific partial image is detected by the image processing apparatus X configured as described above, and data classification is automatically assigned to the image on the processing target surface by the specific partial image. First, an example of the show-through image detection by the show-through image detection means 21 will be described.
When image reading from both sides of the original by the first image reading unit 16a and the second image reading unit 16b is finished, first, the image processing unit 17 first selects the back side based on the opposite side image data recorded in the second image memory 13b. A reflected image detection process is performed. At that time, the position (coordinates) of the show-through image is also detected. Since the original is usually white paper, the detection of the show-through image in the opposite-side image data is, for example, that the luminance level of the opposite-side image is not more than a predetermined level (the image density level is not less than the predetermined level) When a pixel (that is, a visible image having a color other than white) occupies a predetermined ratio or more per predetermined unit area, it can be determined that the pixel group is a show-through image.

  Further, when a pixel group having a predetermined luminance level or less (a predetermined density level or more) occupies a predetermined ratio or more per predetermined unit area, an image including the pixel group is registered in advance in the database 26 in the storage memory 14 or the like. It is determined whether or not it is approximated to any one of the specific images, and if it is approximated, it can be determined that the pixel group is a show-through image. In this case, for example, when an image such as a stamp is an image having a circular frame, a registered image representing a circle is stored in the database 26 in advance, and a contour image extracted from the detected show-through image is obtained. By determining whether the shape is circular or approximately circular, a show-through image can be detected. Note that the determination of a circle or the like may be made, for example, by determining whether or not the aspect ratio and the circularity of the contour of the opposite surface image are within a preset range.

Next, an example of detection of the specific partial image by the specific partial image detection unit 22 after the show-through image is detected will be described.
When a show-through image is detected (when there is a show-through), the specified partial image detection means 22 of the image processing unit 17 applies the show-through image to the target surface image data in the first image memory 13a. Detection of an image (specific partial image) such as a stamp existing in the portion of the back surface position corresponding to the detection position (coordinates) is performed. For example, as described above with reference to FIG. 6, when a circular frame image is detected as a show-through image, only the X coordinate (coordinate in the width direction of the document), for example, is detected for the detected coordinates of the circular frame image. Since the image of the same circular frame should exist at the inverted coordinate position, the partial image such as a stamp is detected as the specific partial image from the image of the coordinate position corresponding to the circular frame reversed left and right.

  As described above, since the position of the specific partial image on the processing target surface is specified (detected) by detecting the show-through image on the opposite surface, the specific partial image is directly extracted from the image on the processing target surface. In addition, it is not necessary to identify and extract the specific partial image from other images. As a result, even if the recording position of the specific partial image representing the type of the document image is not determined, the specific partial image can be detected accurately without erroneous detection by simple calculation with a low calculation load. .

  When a specific partial image of a document is detected, the target surface image data is stored with, for example, a file name as classification information. In the present invention, the file name is automatically obtained from the file name database (table) associated with the specific partial image based on the specific partial image detected by the data classification means 13 provided in the control unit 15. It is comprised so that selection can be given to. When the file name is given, the target plane image data is stored in the file system 25 in the storage memory 14 which is a predetermined storage destination. In addition, the file name can be set by the user through the operation / display unit 12, and the date and time at the time measured by the clock function provided in the control unit 15 can also be used.

  The database 26 of file names, for example, is prepared in a table in which candidates for specific partial images such as stamp marks and seals that can be considered in advance or character information and folder names corresponding to the candidates are associated with each other, and a storage memory 14 is stored. Then, each time a specific partial image is detected from the read document image, a folder name is automatically given by applying the correspondence table, and the folder name is stored and stored in a predetermined storage location. . Thereby, it is possible to prevent the user from having to input classification information such as a folder name for determining a storage destination for each image reading.

Further, the image processing apparatus X stores a file system 25 for managing document image data in folder units in the storage memory 14. The target plane image data stored in the file system 25 can be easily accessed and extracted by the file management program in the control unit 15. The extracted target surface image data can be printed on a recording sheet, faxed using a communication line, or transmitted to a host device.
However, for example, the stored file can be classified into specific manuscripts such as “confidential”, “confidential”, and “copy prohibited” according to the classification information. For such a specific document, a password or the like is set, and an access restriction is applied so that only a specific user can access. Thereby, it is possible to prevent image data such as a confidential document (confidential document) from being extracted by an unauthenticated person.

  Next, a data update process when the read document image is updated will be described. This is a document that has been previously read and saved with classification information (for example, a file name). After that, a stamp or a stamp is further added by a superior, and the document image The specific partial image (show-through image) may be changed. In such a case, when a changed (updated) document is read, the specific partial image is treated as a new document image as a result of being different from that previously detected. Then, a new data classification process is performed, and a new file name may be assigned as different from the registered document image.

  FIG. 3 is a diagram illustrating an example in which the specific partial image of the document image is changed (updated). FIG. 3A shows a document image when scanned and read last time, and FIG. 3B shows an updated document image scanned and read this time. Since the portion enclosed by the ellipse becomes a show-through image (show-through information) in a state where the seal is stamped by each authorizer, the image of the seal can be handled as the specific partial image described above. The document image in FIG. 3A is stamped by four authorizers, and in FIG. 3B, it is stamped by six authorizers.

  FIG. 3C is a diagram showing an example of a file name automatically given to the original image shown in FIGS. 3A and 3B by the above-described data classification unit and data update unit. In order to make the description easy to understand, the description will be made assuming that one square of the lattice indicating the coordinates of the document shown in FIGS. 3A and 3B is one pixel, the horizontal direction of the document is the X coordinate, and the vertical direction is the Y coordinate. As the file name, for example, the first character string “DOC0001” represents the document name, and is given at the time of the first reading of the document, such as a name (number) of the document creation device and an easy-to-understand symbol such as the date of document creation.

  The information consisting of the next number string is the file name associated with the specific partial image to show through, the first numerical value is the information indicating the amount of pixels (number of pixels and pixel size), and the previous number in FIG. In the original document at the time of reading, the number of pixels is set to 4 because there are 4 stamps. Since the amount of pixels increases or decreases each time the document image is updated, whether or not the file has been updated relatively easily by comparing the amount of the show-through pixels. Can be determined. The next four digits indicate the coordinate position of the show-through image, and the coordinates (X, Y) of the mark at the right end (max in the X direction) are (X16, Y05), so “1605”. It is said. The next 4-digit number also indicates the coordinate position of the show-through image, and the coordinate of the mark at the left end (min in the X direction) is (X13, Y05), so it is “1305”. The last numerical value indicates update history information, and “1” is given because it is the first reading time.

  In the updated original at the time of reading in FIG. 3 (B), the number of stamps indicating the amount of pixels is set to 6 because the number of stamps is increased by 2 from the previous time to 6. The coordinate position of the show-through image is “1605” because the coordinates (X, Y) of the mark at the right end (max in the X direction) are (X16, Y05). The coordinate position of the next show-through image is “0805” because the coordinate of the mark at the left end (min in the X direction) is (X08, Y05), which is two more than the previous position. Since the last update history information is the second updated document, “2” is given. Therefore, although it is the same document, the specific partial image becomes different due to the addition of two stamps in this reading. However, since the update history information is attached and the document name “DOC0001” and the show-through information “1605” match, it can be determined that they are the same document.

FIG. 4 is a flowchart illustrating an example of a process for reading an updated document image as shown in FIG. 3 and automatically adding update history information to a file name.
First, in step S1, the updated document is set on the document set tray of the image reading unit. Next, it is detected that the document is set, and in step S2, the document is conveyed by a reading start operation from the operation / display unit. During the conveyance of the original, in step S3, a first reading process for reading the front surface of the processing target surface is performed. In parallel with step S3, a second reading process for reading the back surface of the processing target surface is performed in step S4.

  Next, in step S5, the conveyance state of the original is checked by a paper passage detection sensor or the like, and it is checked whether or not the end of the original has passed through the first and second image reading units. If the passage has not been completed (NO in S5). Return to step S2 to continue the document conveyance and image reading processing. When the passage of the original is completed (S5 YES), the process proceeds to step S6, where the original detection sensor checks whether there is a next original (remaining original). If there is a next original (S6 YES), the process proceeds to step S7. Then, the next original is fed, and the process returns to step S2 to repeat the above processing.

  If there is no next original in step S6 (NO in S6), the process proceeds to step S8, and a show-through image (a blurred image) is obtained in step S9 based on the back side image data obtained by the second reading process. Whether or not there is detected. If there is no show-through image in the back side image (S9 NO), the process proceeds to step S10, and a predetermined file name is manually input to the image data of the front side of the read target document. And save in the file system in step S17.

  If there is a show-through image in step S9 (S9 YES), image data (XY coordinates, pixel size, etc.) of the show-through image read this time is extracted in step S11. In step S12, the document information is compared with the show-through information of the document image read last time registered in the file system. As a result, if it is determined in step S13 that there is an additional image in the show-through image (YES in S13), the update history information described in FIG. 3 is added to the file name in step S14. Then, a file name in which the data of the show-through image added in step S15 is incorporated is automatically generated.

  If it is determined in step S13 that there is no additional image in the show-through image (NO in S13), the document image is not changed, and the update image information is not added to the file name, and the show-through image is used as it is. Automatically generates a file name with the data of. Thereafter, the automatically generated file name is determined as the file name to be saved in step S16, saved in the file system in step S17, and the process ends.

FIG. 5 is a diagram showing an example of a flow for searching for a file before update or searching for a similar file when an updated document image is read as shown in FIG.
The process from the updated document set in step S1 to the show-through image (bleed image) detection in step S9 is the same as the flow example in FIG.

  In step S9, it is detected whether or not there is a show-through image in the back image of the updated document. If there is no show-through image (NO in S9), the process proceeds to step S20, and an attempt is made to search by manual input. A file name (for example, a file name of a document image read this time or a similar file name) is input, and a file search is executed in step S27. As a result, it is searched whether the document image having the input file name has already been registered, and the file before update can be called up.

  If there is a show-through image in step S9 (S9 YES), image data (XY coordinates, pixel size, etc.) of the show-through image read this time is extracted in step S21. Next, in step S22, the amount of pixels (number of pixels, pixel size) of the show-through information of the document image is compared with the stored numerical values. As a result, if it is determined in step S23 that the show-through images match (S23 YES), a file name including the show-through image data of the updated document read this time is automatically generated in step S24. Then, in step S27, the file search is executed as the file name for searching for the automatically generated file name in step S26.

  If it is determined in step S23 that the show-through images do not match (NO in S23), the process proceeds to step S25, and a list of files registered before the update is displayed. Of these, a file name that matches the updated document name or a similar file name is selected as the file name to be searched in step S26, and the file search is executed in step S27.

  When searching for a file of an original before update, when the original after update is read and searched, the updated file name is automatically generated first. As described in FIG. 3, the file name is given the update history information and the character string given when it was first read. Therefore, the file is called with the file name character string, and the update history information is traced. If you go, you can call up the original file.

  In addition, the above-described embodiment assumes an image processing apparatus such as a scanner device or a copying machine. However, the present invention is not limited to this, and a similar function can be realized by a general-purpose computer such as a personal computer. In this case, for example, the present invention is an image processing program that realizes the same function as that of the above-described embodiment by being executed by a computer such as a personal computer to which a scanner is connected. It can be configured as a computer-readable recording medium on which the program is recorded.

It is a block diagram explaining the outline of the image processing apparatus by this invention. It is a figure explaining the outline of the image reading part periphery of the image processing apparatus by this invention. It is a figure which shows an example in which the specific partial image of the original image was updated in this invention. In this invention, it is a figure which shows the example of a flow which adds update log information to a file name automatically. In this invention, it is a figure which shows the example of a flow which searches the file before update, or a similar file. It is a figure explaining an example of a read original image and a show-through image.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11a ... Communication part, 11b ... Line control part, 12 ... Operation / display part, 13a ... 1st image memory, 13b ... 2nd image memory, 14 ... Memory for storage, 15 ... Control part, 16a ... 1st image reading part 16b ... second image reading unit, 17 ... image processing unit, 18 ... printing unit, 19 ... feeding unit, 21 ... show-through image detection unit, 22 ... specific partial image detection unit, 23 ... data classification unit, 24 ... Data update means, 25 ... file system, 26 ... database.

Claims (7)

A specific partial image attached to the processing target surface is detected from the image read from the processing target surface of the document and a show-through image read from the opposite surface of the processing target surface, and read from the processing target surface. An image processing apparatus for adding classification information to an image and storing it in a storage means,
Data classification means for performing data classification processing on the image of the processing target surface based on the specific partial image, and when the image read from the processing target surface is an updated image, update information in the classification information Is added and stored.   The image processing apparatus according to claim 1, wherein the data classification process includes a process of attaching the classification information to an image of the processing target surface based on the specific partial image.   The image processing apparatus according to claim 1, wherein the data classification process includes a process of storing the specific partial image and the classification information in association with each other as a database.   3. The image processing apparatus according to claim 1, wherein, as a result of the data classification process, when an image read from the processing target surface is an access-restricted image, the access is restricted by an access restriction unit. A specific partial image attached to the processing target surface is detected from the image read from the processing target surface of the document and a show-through image read from the opposite surface of the processing target surface, and read from the processing target surface. An image processing method for attaching classification information to an image and storing it in a storage means,
Based on the specific partial image, data classification means performs data classification processing on the image of the processing target surface, and adds update information to the classification information when the image read from the processing target surface is an updated image And storing the image processing method. A process of detecting a specific partial image attached to the processing target surface from an image read from the processing target surface of the document and a show-through image read from the opposite surface of the processing target surface; An image processing program for causing a computer to execute a process of adding classification information to a stored image and storing it in a storage means,
Based on the specific partial image, data classification means performs a data classification process on the image on the processing target surface, and updates information in the classification information if the image read from the processing target surface is an updated image. An image processing program for causing a computer to execute a process of adding and storing   A computer-readable recording medium on which the image processing program according to claim 6 is recorded.

Images