JP2006243141A - Image processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method in which a same problem can be solved for many times and moreover, a new problem can be generated only by collecting wrong answer portions of the problem. <P>SOLUTION: (1) Answers written on test papers and problem papers are read by MFP and hand written answer portions are erased and copies are made.(2) Reading is conducted for a plurality of test papers or problem papers on which answers are written, the problems on which wrong answers are written are recognized, problems to which wrong answers are provided are collected from a plurality of papers and copies are made for one or a plurality of papers. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to reuse of problem paper used in an educational setting in an image processing apparatus.

  In educational settings such as schools and cram schools, question papers created by teachers or printed by specialized contractors are used as teaching materials for students and learners.

As another conventional example, Patent Literature 1 and Patent Literature 2 can be cited.
JP 2003-177659 A JP 2003-295747 A

  In learning, you can learn by repeating the same problem, but usually, once you have answered these questions, you want to solve the same problem again. Therefore, it is necessary to obtain a new question sheet or erase the question sheet that has been answered with a pencil or the like with an eraser and use it again.

  In order to solve the above problems, a document reading unit that reads a document, a character determination unit that determines a handwritten character from the read image, and an image that erases an area determined to be a handwritten character by the character determination unit It is an object of the present invention to provide an image processing apparatus having an erasing means and an image output means for outputting an erased image obtained by erasing handwritten characters from an original image.

  Further, the image processing apparatus is characterized in that the manuscript is a test or question sheet used in a school or a cram school, reads the answered question sheet, erases the answered part, and outputs an image. .

  The image erasing is performed on a predetermined answer area in the question sheet.

  On the other hand, the image erasing is performed on the handwritten character of the answer part described in a color different from the type part in the question sheet.

  Further, an identification unit that reads a plurality of question sheets, identifies a correct answer and an incorrect answer problem in the question sheet, and extracts an incorrect answer problem by the identification means, erases a handwritten character, and deletes one or more sheets An image processing apparatus that outputs to an output sheet.

  As described above, according to the present invention, the same question can be solved any number of times by reading the answered question sheet and deleting the answer part and the scoring part, and the learning effect is improved. Furthermore, it is more effective because a new question can be created by collecting only the wrong answers of the question.

Example 1
Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of an image processing system of the present invention.

  In FIG. 1, the image processing system of the present invention includes an image processing apparatus 100 and an image data server 110. The image processing apparatus 100 includes an image input / output unit 101 and an image input / output control unit 105. The image processing apparatus 100 is connected to the image data server 110 via the network 112.

  Here, the image input / output unit 101 includes an operation unit 102, a reader unit 103, and a printer unit 104, and is connected so that image data and the like can be communicated with each other. The operation unit 102 is used for instructing the digital copying machine main body 101 and the image input / output control unit 105 to operate. The reader unit 103 is used to read an image of a document and output image data corresponding to the document to the image processing unit 111 and the image input / output control unit 105. The printer unit 104 serving as an image output unit is used to record an image corresponding to image data from the image processing unit 111 and the image input / output control unit 105 on a recording sheet.

  On the other hand, the image input / output control unit 105 includes a control unit 109 connected to the reader unit 103 of the image input / output unit 101, a facsimile unit 106 connected to the control unit 109, a network interface unit 107, and a hard disk 108. A telephone line 113 is connected to the facsimile unit 106, and a network 112 is connected to the network interface unit 107.

  The facsimile unit 106 decompresses the compressed data received by facsimile via the telephone line 113, transfers the decompressed image data to the control unit 109, and compresses the image data transferred from the control unit 109, The compressed compressed image is transmitted by facsimile via the telephone line 113. The compressed image data received by the facsimile unit 106 can be temporarily stored in the hard disk 108 through the control unit 109. The network interface unit 107 is an interface between the network 112 and the control unit 109. A control unit 109 serving as a control unit controls the flow of data among the reader unit 103, the facsimile unit 106, the network interface unit 107, and the hard disk 108, particularly the flow of image data. Therefore, storage of image data and output of image data can be controlled.

  Next, the reader unit 103 and the printer unit 104 will be described with reference to FIG. Here, FIG. 2 is a cross-sectional view for explaining the reader unit 103 and the printer unit 104.

  In the reader unit 103 shown in FIG. 2, reference numeral 201 denotes a document feeder, which is a device for feeding a document fed on the upper surface thereof. A platen glass 202 is a transparent flat plate on which an original can be placed and reflected light from the original can be transmitted. A lamp 203 is lit to emit light and to allow exposure of the original. Reference numerals 205 to 207 denote mirrors, which can send light in a predetermined direction depending on the reflection surface and a predetermined angle. A scanner unit 204 has a lamp 203 and a mirror 205 therein, and the scanner unit 204 moves and scans the document on the platen glass 202 while exposing it (exposure scanning). Data can be collected. A lens 208 collects light and can project an image on an arbitrary point. Reference numeral 209 denotes a CCD (Charge Coupled Device) image sensor (hereinafter referred to as “CCD”), which can convert light information into image data.

  On the other hand, in the printer unit 104 shown in FIG. 2, reference numeral 210 denotes a laser light emitting unit that irradiates laser light. 211 is a photosensitive drum, and a latent image is formed by a laser irradiated on the photosensitive drum. A developing device 212 develops a latent image formed on the photosensitive drum 211. Reference numerals 213 and 214 denote cassettes that can store a certain amount of recording paper. A transfer unit 215 transfers the developed latent image onto the conveyed recording paper. A fixing unit 216 fixes the developer transferred onto the recording paper by the transfer unit 215 and fixes the latent image on the recording paper. Reference numeral 217 denotes a discharge roller that discharges the recording paper. A flapper 218 switches between normal single-sided recording, double-sided recording, and multiple recording. Reference numeral 219 denotes a refeed conveyance path, which is a conveyance path for conveying already recorded recording paper when double-sided recording or multiple recording is selected and the conveyance path is changed by the flapper 218. A sorter 220 includes a plurality of sorter bins 221 for sorting, and can sort the recording paper. In addition, it is possible to staple the sorted recording paper. Reference numeral 221 denotes a laser driver, which drives and controls the above-described laser light emitting unit 210 and arbitrarily controls the laser light.

  Next, the operation unit 102 will be described with reference to FIG. Here, FIG. 3 is an explanatory diagram for explaining a key arrangement of the operation unit 102.

  The image processing apparatus in the image processing system of the present invention has a copy function, a facsimile function, and a personal box function, and a user selects a necessary function from among these plural functions by operating the operation unit 102. can do.

  In FIG. 3, reference numeral 301 denotes a main power lamp, which lights up when the power is turned on. Here, a power switch (not shown) is disposed on the side surface of the main body, and energization of the main body is controlled. A preheat key 302 is used to turn on / off the preheat mode. A copy mode key 303 is used to select a copy mode that is a function for copying from a plurality of functions. A fax mode key 304 is used to select a facsimile mode that is a function of performing facsimile communication from a plurality of functions. Reference numeral 305 denotes a personal key box key, which is used when selecting a personal box mode using the personal box function from a plurality of functions. A copy start key 306 is used when it is desired to instruct the start of copying. Reference numeral 307 denotes a stop key which is used when copying is interrupted or stopped. A reset key 308 operates as a key for returning to the standard mode during standby. A guide key 309 is used when it is desired to know each function of the image input / output device. A user mode key 310 is used when the user changes the basic setting of the system. Reference numeral 311 denotes an interrupt key, which is used when it is desired to make a copy by interrupting during copying. Reference numeral 312 denotes a numeric keypad which is used when inputting numerical values. Reference numeral 313 denotes a clear key, which is used for clearing the input numerical value or the like. Reference numeral 314 denotes 20 one-touch dial keys, which are used when dialing with one-touch, which is a single operation, in facsimile transmission. Reference numeral 315 denotes a cover of two sheets, which is a double cover having a shape in which each key portion of the one-touch dial key 314 is cut out. A sensor switch not shown in the figure shows a first state in which two lids are closed, a second state in which only one lid is opened, and a third three types of lids in which two lids are opened. An open / closed state is detected. Therefore, since the role of each key of the one-touch dial key 314 is determined in combination with the opening / closing states of the three types of lids, in the embodiment of the present invention, it is equivalent to that there are 20 × 3 = 60 keys. Will have an effect. Reference numeral 316 denotes a touch panel composed of a combination of a liquid crystal screen and a touch sensor. An individual setting screen is displayed for each mode, and further, touching a drawn key is recognized as an input of the key. Detailed settings can be made.

  When the user selects the copy function from among these functions by operating the operation unit 102 of the image input / output device, when the user presses the copy start key 306, the operation of the reader unit 103 causes the The document is converted into image data and transferred to the printer unit 104. Then, the transferred image data is printed out on a recording sheet by the printer unit 104.

  Further, when the user operates the operation unit 102 of the image processing apparatus 100 to select a facsimile function from among the plurality of functions, facsimile communication that performs facsimile transmission and facsimile reception becomes possible. That is, in the case of facsimile transmission, the document is converted into image data by the operation of the reader unit 103, and the image data controlled by the operation of the control unit 109 of the image input / output control unit 105 is converted into data by the facsimile unit 106. The data is compressed and transferred to the facsimile transmission destination via the telephone line 113. On the other hand, in the case of facsimile reception, the compressed image data is received via the telephone line 113, the compressed image data is decompressed by the facsimile unit 106 and converted into image data, and then the image controlled by the control unit 109 is used. The data passes through the reader unit 103 and is transferred to the printer unit 104. Then, the transferred image data is printed out on a recording sheet by the printer unit 104.

  A case where the user selects the personal box function from the plurality of functions by operating the operation unit 102 of the image processing apparatus 100 will be described later.

  Next, the hard disk 108 of the image input / output control unit 105 will be described with reference to FIG. Here, FIG. 4 is an explanatory diagram for explaining a logical usage method of the hard disk 108. As shown in FIG. 4, in the embodiment of the present invention, the storage area of the hard disk is logically divided into a temporary area 401 and a personal box area 402. The temporary area 401 is a storage area for temporarily storing image data in order to change the output order of image data or to output a plurality of copies in a single scan. That is, it is a storage area for storing data controlled by the control unit 109. The personal box area 402 is a storage area for using the personal box function, and has divided boxes 403 to 407.

  Here, the personal box function means that when a document is printed out, an image is transferred from a host such as a personal computer, a scanner, or an image data server by designating a storage area of the hard disk of the digital image processing system, and a recording paper ( The output to the sheet is performed from the operation unit of the image input / output device.

  Boxes 403 to 407 are assigned to each user, and a box name and a password can be attached to each box. Users can access each box by specifying the box name, and after entering the password and authenticating whether or not they are authentic, they can actually see inside the box or on the recording paper (paper). It cannot be output.

  In FIG. 7, reference numeral 701 denotes box information display indicating information of each box, which displays a box number, a box name, and the number of documents (documents or documents). The box number on the touch panel 316 is a button, and a box to be opened can be selected by touching the display of the box number. Each box has a one-to-one correspondence with the above-mentioned boxes 403 to 407 of the hard disk 108. Here, selecting a box means selecting a box in the personal box area of the corresponding hard disk 108. Become.

  Reference numerals 702 and 703 denote up and down cursor keys. When there are a number of boxes that cannot be displayed on one screen, the box information display 701 can be scrolled up and down. An end key 704 is used to end the screen of FIG. 7 and return to the standard screen that is the previous screen.

  When a corresponding part of the touch panel 316 of a certain box number is touched, a box to be opened is designated, and the touch panel 316 displays the screen of FIG. In FIG. 8, which is a password input screen, reference numeral 801 denotes a cancel key, which is used to stop password input. Therefore, touching 801 returns to the screen of FIG. Reference numeral 802 denotes an OK key that gives an instruction to start authentication of the input password.

  In the screen of FIG. 8, when a password is input from the numeric keypad 312 of the operation unit 102 and the user presses 802 after completing the password input, authentication is started, and correctness determination of the input password is performed. If the password is incorrect, the password is displayed incorrectly without being authenticated. Thereafter, the screen returns to the password input screen of FIG.

  If the entered password is correct, the touch panel display shifts to the screen of FIG. One document to be output on a recording sheet (paper) is selected from a plurality of documents (documents or originals) stored in the selected box. In FIG. 9, which is a screen for selecting a document to be stored in one selected box, 901 is a document information display in the box, in which the stored date and time of the document and the file name of the document are displayed. Further, the currently selected document is displayed in reverse video, and the selected document can be changed by touching the file name. For example, in FIG. 9, the document with file name 1 is selected. Reference numerals 902 and 903 denote up and down cursor keys, respectively. When there are a number of documents that cannot be displayed on one screen, the document information display 901 can be scrolled up and down. Reference numeral 904 denotes a print key, which can be output to recording paper (paper) by pressing this key after selecting a document. Reference numeral 905 denotes an erase key, which is used when the document in the box is erased without being output onto recording paper (paper). Reference numeral 906 denotes a close key, which is used to close the screen of FIG. 9 and shifts to the screen of FIG. 7 by closing.

  Next, when the print key 904 shown in FIG. 9 is pressed, each page of the selected document can be printed out for the set number of pages.

  Next, in the embodiment of the present invention, means for deleting the description of the answer part and the scoring part of the question sheet will be described with reference to the block diagram of the image processing unit in FIG. 5 and the flowchart in FIG.

  First, in step 1001, the reader unit 103 reads an image. Next, the image processing unit 111 performs image processing on the image data. In FIG. 5, reference numeral 501 denotes a general-purpose image processing circuit, which skips the ground of an image, performs character emphasis, filter processing, and the like. Reference numeral 502 denotes an area determination circuit that determines which area each pixel of an image belongs to. An image erasing circuit 503 erases image data for each pixel. Steps 1002 to 1006 show the operation of the area determination circuit 502. If it is determined in step 1002 that the target pixel in the image is an answer area, a flag indicating that it is an answer area is set in step 1003. If it is determined in step 1004 that it is a scoring area, a flag indicating that it is a scoring area is set in step 1005. A flag indicating that other areas are normal areas is set in step 1006. Thereafter, in step 1008, image erasure processing is performed on the pixels for which the answer area flag or the scoring area flag is set. In step 1008, it is determined whether the processing for one page is completed, and steps 1002 to 1007 are repeated. When the processing for one page is completed, in step 1009, image data is stored in the memory 106 in FIG. In step 1010, it is determined whether all pages have been completed. If there are remaining pages, steps 1001 to 1009 are repeated. Finally, in step 1011, the printer unit 104 outputs an image. The determination of the area in the image data of the question paper may be configured, for example, such that a predetermined area is determined in advance as a question, answer, and scoring area, the answering part is a blue pen, and the scoring part is a red pen. Processing may be performed by color determination as described. Or you may determine an area | region by the structure which recognizes a handwritten character.

  Through the processing described above, the answered question sheet shown in FIG. 11 is output as the unanswered question sheet shown in FIG.

(Example 2)
In the first embodiment, the image processing unit 111 may be configured as shown in FIG.

  In the image processing unit 111 of FIG. 6, reference numeral 601 denotes a general-purpose image processing circuit that skips the ground of an image, performs character enhancement, filter processing, and the like. Reference numeral 602 denotes an area determination circuit that determines which area each pixel of an image belongs to. Reference numeral 603 denotes an image erasing circuit that erases image data for each pixel. Reference numeral 604 denotes a correctness / incorrectness determination circuit that determines which one of the marks in the scoring part in the image is ◯ ×, and notifies the control unit 109 to store only the problem area corresponding to the case of × in the memory 106. As a result, the four question sheets shown on the left in FIG. 13 are read, and the wrong answer parts are collected and reconfigured as one question sheet in an unanswered state in the state shown on the right in FIG. As shown in the question sheet on the right side of FIG. 13, the first problem 2, 4, 5, the second problem 5, the third problem 1, the 44th problem 1, 3 are reconfigured to be one sheet. It is output on the problem paper.

1 is a schematic configuration diagram of an image processing apparatus according to an embodiment of the present invention. Sectional drawing which shows the structure of the image input / output part of embodiment of this invention. Explanatory drawing of the operation part of the image input-output part of embodiment of this invention. Explanatory drawing for demonstrating the logical usage method of the hard disk of the image input / output control part of embodiment of this invention. The block diagram of the image processing part of embodiment of this invention. The block diagram of the image processing part of Example 2 of this invention. The box selection screen of embodiment of this invention. The password input screen at the time of box use of embodiment of this invention. The file selection screen at the time of box use of embodiment of this invention. The flowchart explaining operation | movement of embodiment of this invention. An example of the problem sheet input according to the embodiment of the present invention. An example of the problem paper output of the embodiment of the present invention. The example of an input and output of Example 2 of the present invention.

Claims (5)

  An original reading means for reading an original, a character determining means for determining a handwritten character from the read image, an image erasing means for erasing an area determined to be a handwritten character by the character determining means, and a handwriting from the original image An image processing apparatus comprising: an image output unit that outputs an erased image from which characters are erased.   The image according to claim 1, wherein the manuscript is a test or question sheet used in a school or a cram school, the answered question sheet is read, the answered part is erased, and an image is output. Processing equipment.   3. The image processing apparatus according to claim 2, wherein the image erasing is performed on a predetermined answer area in the question sheet.   3. The image processing apparatus according to claim 2, wherein the image erasing is performed on a handwritten character in an answer portion described in a color different from a printed portion in the question sheet.   Identification means for reading a plurality of problem papers and identifying correct and incorrect questions in the problem paper, and extracting the incorrect answers by the identification means, erasing handwritten characters, and one or a plurality of output papers The image processing apparatus according to claim 1, wherein the image processing apparatus outputs the image to the image processing apparatus.

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