JP2022183493A - Correction system, correction method, and correction program - Google Patents

Abstract

To provide a correction system, a correction method, and a correction program that can prevent correction images from becoming difficult to see.SOLUTION: A correction system 1 comprises: a reading unit that reads an image of a descriptive answer sheet AS; an extraction unit that performs character recognition of the image of the answer sheet AS to extract character strings of the answers from the image; an evaluation unit that collates the extracted character strings of the answers with character strings of correct answers to evaluate the correctness of the character strings of the answers; a first generation unit that generates correction images G based on a result of evaluation made by the evaluation unit; and a second generation unit that generates print data for arranging the correction images G on the answer sheet AS based on the positions of images of parts corresponding to the character strings of the answers in the image of the sheet.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to correction systems, correction methods, and correction programs.

Japanese Patent Application Laid-Open No. 2016-225732 (Patent Document 1) discloses a technique for printing a review sheet in which correct/incorrect answers and explanations are arranged in specific locations such as near answer columns.

JP 2016-225732 A

According to the technique disclosed in Japanese Patent Application Laid-Open No. 2002-200000, a commentary predetermined for each question is arranged and printed at a specific location such as the vicinity of the answer column. Therefore, if the character string of the answer protrudes from the answer column, the corrected image may overlap with the character string of the answer and become difficult to see.

The present disclosure has been made in view of such circumstances, and has an object to provide a correction system, a correction method, and a correction program that can prevent a corrected image from becoming difficult to see.

A correction system according to an aspect of the present disclosure includes an image forming device and an information processing device. The image forming apparatus includes a reading unit that scans a descriptive answer sheet to read an image, and a first communication unit that transmits the image of the answer sheet read by the reading unit to the information processing apparatus. The information processing device includes an extraction unit that extracts an answer character string from the image of the answer sheet received from the image forming device by performing character recognition, and compares the extracted answer character string with a correct character string. Thus, an evaluation unit that evaluates the correctness of the character string of the answer, a first generation unit that generates a corrected image based on the evaluation result of the evaluation unit, and a second communication unit that transmits the corrected image to the image forming apparatus. Prepare. The image forming apparatus further includes a second generating unit that generates print data for arranging the corrected image received from the information processing apparatus on the sheet based on the position of the image of the part of the image of the answer sheet that corresponds to the character string of the answer. .

The forms include answer sheets.

The image forming apparatus further includes a specifying unit that specifies the position of the part of the image of the answer sheet read by the reading unit that corresponds to the character string of the answer.

The information processing apparatus further includes a specifying unit that specifies the position of a portion of the image of the answer sheet read by the reading unit that corresponds to the character string of the answer.

The correction images include a first correction image showing that the correct character string and the answer character string match.

The corrected image includes a second corrected image showing the difference between the correct character string and the answer character string.

The redacted images include a third redacted image showing a difference-based commentary.

The corrected images include a fourth corrected image indicating a score based on the evaluation results.

The fourth correction image includes an image showing points corresponding to the differences.

The first generator determines the size of the corrected image based on the size of the image of the part of the answer sheet image that corresponds to the character string of the answer.

A correction method according to yet another aspect of the present disclosure is computer-implemented. The correction method includes scanning a descriptive answer sheet with a scanner to read the image, extracting the character string of the answer from the image by character recognition of the image of the answer sheet, and Evaluating the correctness/incorrectness of the answer character string by comparing the answer character string with the correct answer character string, generating a correction image based on the evaluation result regarding the correctness/incorrectness of the answer character string, generating print data to be laid out on the answer sheet based on the position of the part of the image of the answer sheet that corresponds to the character string of the answer.

A correction program according to still another aspect of the present disclosure is a program for causing a computer to execute the correction method described above.

According to the present disclosure, it is possible to prevent the corrected image from becoming difficult to see.

It is a figure which shows the outline of the correction system in embodiment. 2 is a block diagram showing the main hardware configuration of the image forming apparatus; FIG. 2 is a block diagram showing the main hardware configuration of an information processing device; FIG. FIG. 2 is a diagram showing an example of functional blocks of a correction system; FIG. It is a figure which shows an example of the sample image of an answer sheet. FIG. 4 is a diagram showing an example of an image of an answer sheet read by a reading unit; It is a figure which shows an example of a 1st table. It is a figure which shows an example of a 2nd table. It is a figure which shows an example of a 3rd table. It is a figure which shows an example of a corrected image. FIG. 10 is a diagram showing an example of an answer sheet on which a correction image is printed; 7 is a flowchart showing an example of correction processing;

Embodiments according to the present invention will be described below with reference to the drawings. In the following description, identical parts and components are given identical reference numerals. Their names and functions are also the same. Therefore, detailed description of these will not be repeated. Note that the embodiments and modifications described below may be selectively combined as appropriate.

(1. Configuration of correction system)
FIG. 1 is a diagram showing an outline of a correction system according to an embodiment. The correction system 1 includes an image forming device 100 and an information processing device 300 .

Image forming apparatus 100 and information processing apparatus 300 communicate with each other via a network. The network may be, for example, a public network such as the Internet, a public line, or a public wireless LAN (Local Area Network), or a private network such as a LAN or VPN (Virtual Private Network).

Image forming apparatus 100 is, for example, a multi-function peripheral (MFP). Image forming apparatus 100 has at least a scan function, a printer function, and a communication function. The image forming apparatus 100 includes a first tray 107 on which a document to be scanned is placed. The image forming apparatus 100 scans the answer sheet AS placed on the first tray 107 to read the image.

Answers are written by examinees on descriptive answer sheets AS placed on the first tray 107 . The written answer sheet AS contains at least one written answer and may further include multiple choice answers. Written answers refer to anything other than multiple-choice answers. A multiple-choice answer is an answer selected from prepared answer options. At least one answer column C is printed in advance on the descriptive answer sheet AS.

The image forming apparatus 100 prints the correction image G generated by the information processing apparatus 300 on the answer sheet whose image has been read, and discharges the answer sheet AS on which the correction image G is printed to the second tray 108 . The corrected image G is generated by the information processing apparatus 300 based on the evaluation result regarding the correctness or incorrectness of the character string of the answer extracted from the image of the answer sheet AS. The generated corrected image G is stored in the storage device 320 of the information processing device 300 . The arrangement position of the correction image G is determined based on the position of the part of the image of the answer sheet AS that corresponds to the character string of the answer.

This prevents the corrected image from becoming difficult to see. In addition, it is possible to print a corrected image corresponding to the correctness or incorrectness of the character string of the answer.

(2. Hardware configuration)
Hardware configurations of the image forming apparatus 100 and the information processing apparatus 300 will be described with reference to FIGS. 2 and 3. FIG. FIG. 2 is a block diagram showing the main hardware configuration of the image forming apparatus. FIG. 3 is a block diagram showing the main hardware configuration of the information processing device.

Referring to FIG. 2, image forming apparatus 100 includes processor 101 , main memory 102 , communication interface 103 , scanner 104 , printer 105 , operation panel 106 and storage device 120 . These components are communicatively connected to each other via an internal bus 119 .

Processor 101 is composed of, for example, at least one integrated circuit. The integrated circuit is composed of, for example, at least one CPU (Central Processing Unit), at least one ASIC (Application Specific Integrated Circuit), at least one FPGA (Field Programmable Gate Array), or a combination thereof.

Processor 101 expands program 122 stored in storage device 120 into main memory 102 and executes it, thereby realizing various processes according to the present embodiment. The main memory 102 is composed of volatile memory and functions as a work memory necessary for the processor 101 to execute programs.

A communication interface 103 exchanges data with an external device via a network. The external device includes, for example, the information processing device 300 and the like. The image forming apparatus 100 transmits the image of the answer sheet read by the scanner 104 (to be described later) to the information processing apparatus 300 via the communication interface 103 . Also, the image forming apparatus 100 receives the corrected image from the information processing apparatus 300 via the communication interface 103 .

Scanner 104 is an example of a “reading unit”. A scanner 104 scans a document to read an image. As an example, the scanner 104 scans a descriptive answer sheet on which answers are written by the examinee and reads the image.

The printer 105 is an example of a “printing unit”. The printer 105 may be a laser beam printer that employs an electrophotographic method, an inkjet printer that employs an inkjet method, or a printer that employs a thermal transfer method. A printer 105 prints an image on paper. The paper may be a document read by the scanner 104 or a paper stored in a paper feed tray. As an example, the printer 105 prints the corrected image generated by the information processing apparatus 300 on a descriptive answer sheet on which the examinee has written the answers.

The operation panel 106 displays objects and various information for various setting operations regarding the image forming apparatus 100 .

Storage device 120 is, for example, a hard disk. As an example, storage device 120 stores program 122 for realizing various processes according to the present embodiment, and sample images SG of answer sheets, which will be described later.

The program 122 may be provided as a part of an arbitrary program, not as a standalone program. In this case, processing according to the present embodiment is realized in cooperation with an arbitrary program. Even a program that does not include some of such modules does not deviate from the gist of image forming apparatus 100 according to the present embodiment. Also, part or all of the functions provided by the program 122 may be realized by dedicated hardware.

The image forming apparatus 100 includes a path for transporting a document read by the scanner 104 to the printer 105 as a paper transport path. Note that the image forming apparatus 100 may further include, as a paper transport path, a path for transporting the paper fed from the paper feed tray to the printer 105 .

Referring to FIG. 3, information processing apparatus 300 includes a processor 301 , main memory 302 , communication interface 303 , operation interface 305 , display interface 306 , optical drive 307 and storage device 320 . These components are communicatively connected to each other via an internal bus 319 .

Processor 301 is composed of, for example, at least one integrated circuit. An integrated circuit is composed of, for example, at least one CPU, at least one ASIC, at least one FPGA, or a combination thereof.

Processor 301 expands program 322 stored in storage device 320 into main memory 302 and executes it, thereby realizing various processes according to the present embodiment. The main memory 302 is composed of volatile memory and functions as a work memory necessary for the processor 301 to execute programs.

A communication interface 303 exchanges data with an external device via a network. The external device includes, for example, image forming apparatus 100 and the like. The information processing apparatus 300 receives the image of the answer sheet read by the scanner 104 from the image forming apparatus 100 via the communication interface 303 . The information processing apparatus 300 also transmits the corrected image to the image forming apparatus 100 via the communication interface 303 .

The operation interface 305 is connected to the input device 310 and receives signals indicating user operations from the input device 310 . The input device 310 typically consists of a keyboard, mouse, touch panel, touch pad, etc., and receives operations from the user.

Display interface 306 is connected to display 311 and sends an image signal for displaying an image to display 311 according to a command from processor 301 or the like. The display 311 is, for example, a liquid crystal display, organic EL display, or other display device.

The optical drive 307 reads various programs (for example, the program 322) stored therein from the optical disk 307A or the like and installs them in the storage device 320. FIG. Instead of installing the necessary programs in the information processing apparatus 300 via the optical drive 307, they may be downloaded from another apparatus on the network. Alternatively, the program on the information processing device 300 may be configured to be rewritten by a program written in a storage medium such as a USB (Universal Serial Bus) memory, an SD (Secure Digital) card, or a CF (Compact Flash). good.

Storage device 320 is, for example, a hard disk. As an example, storage device 320 stores a program 322 for implementing various processes according to the present embodiment, and tables (first table 324, second table 326 and third table 328) to be described later.

The program 322 may be provided as a part of any program, not as a standalone program. In this case, processing according to the present embodiment is realized in cooperation with an arbitrary program. Even a program that does not include such a part of modules does not deviate from the gist of information processing apparatus 300 according to the present embodiment. Also, part or all of the functions provided by the program 322 may be realized by dedicated hardware.

(3. Function block)
Functional blocks of the correction system will be described with reference to FIGS. FIG. 4 is a diagram showing an example of functional blocks of the correction system. Image forming apparatus 100 includes reading unit 131 , specifying unit 132 , and first communication unit 133 . The information processing device 300 includes a second communication unit 331 , an extraction unit 332 , an evaluation unit 333 and a first generation unit 334 . Image forming apparatus 100 further includes a second generator 134 and a printer 135 .

The reading unit 131 is implemented by the scanner 104 . The identification unit 132 , the first communication unit 133 and the second generation unit 134 are implemented by the processor 101 executing the program 122 . The printing unit 135 is implemented by the printer 105 .

Second communication unit 331 , extraction unit 332 , evaluation unit 333 , and first generation unit 334 are implemented by processor 301 executing program 322 .

The reading unit 131 scans the descriptive answer sheet to read the image.

The specifying unit 132 compares the image of the answer sheet read by the reading unit 131 with the sample image SG of the answer sheet stored in the storage device 120, thereby determining the image of the answer sheet read by the reading unit 131. The position of the part of the image corresponding to the character string of the answer is specified. Hereinafter, the image of the part of the image of the answer sheet read by the reading unit 131 that corresponds to the character string of the answer is also referred to as a "partial image".

Here, a method for specifying the position of the partial image by the specifying unit 132 will be described with reference to FIGS. 5 and 6. FIG. FIG. 5 is a diagram showing an example of a sample image of an answer sheet. FIG. 6 is a diagram showing an example of an image of an answer sheet read by the reading unit.

Referring to FIG. 5, sample image SG of an answer sheet is a sample image of a descriptive answer sheet. The sample image SG includes an answer column C for each question. In the example shown in FIG. 5, the answer column C includes a question 1 answer column C1, a question 2 answer column C2, and a question 3 answer column C3. The answer column C1 and the answer column C2 are descriptive answer columns, and the answer column C3 is a selective answer column.

Furthermore, the sample image SG includes a comparison target area R for each question. The comparison target area R is an area to be compared when the specifying unit 132 compares the sample image SG and the image of the answer sheet read by the reading unit 131 . In the example shown in FIG. 5, the comparison target region R includes a comparison target region R1 for question 1, a comparison target region R2 for question 2, and a comparison target region R3 for question 3. In FIG. Note that the sample image SG may include at least one descriptive answer column C and a comparison target area R corresponding to the answer column C. FIG.

The specifying unit 132 compares the image of the answer sheet read by the reading unit 131 with the sample image SG for each comparison target region R. Then, the identifying unit 132 identifies a portion of the image of the answer sheet read by the reading unit 131 that differs from the sample image SG as the position of the partial image.

As an example, when the image of the answer sheet read by the reading unit 131 is the image RG shown in FIG. 6, the specifying unit 132 specifies the position of the partial image as follows. 5 and 6, first, specifying unit 132 compares an area corresponding to comparison target area R1 in image RG with comparison target area R1 of sample image SG, and compares image RG with sample image SG. The portion P1 where the difference occurs is identified as the position of the partial image of question 1. FIG.

Next, the specifying unit 132 compares the region corresponding to the comparison target region R2 in the image RG with the comparison target region R2 in the sample image SG, and determines the portion P2 in the image RG where a difference is generated from the sample image SG. position of the partial image of .

Next, the specifying unit 132 compares the region corresponding to the comparison target region R3 in the image RG with the comparison target region R3 in the sample image SG, and determines the portion P3 in the image RG where there is a difference from the sample image SG. position of the partial image of .

Referring to FIG. 4 again, first communication unit 133 transmits the answer information to information processing apparatus 300 via communication interface 103 (see FIG. 2). The answer information includes an image of the answer sheet read by the reading unit 131 and position information indicating the position of the partial image specified for each question by the specifying unit 132 .

Second communication unit 331 receives the answer information from image forming apparatus 100 via communication interface 303 (see FIG. 3).

The extraction unit 332 performs character recognition on the image of the answer sheet included in the answer information to extract the character string of the answer from the image. Specifically, the extraction unit 332 performs character recognition on an image of the answer sheet that is specified from the position information included in the answer information, thereby extracting a character string of the answer from the image for each question.

As an example, when the image of the answer sheet received by the second communication unit 331 is the image RG shown in FIG. 6, the extraction unit 332 extracts the character string of the answer as follows. Referring to FIG. 6, first, extraction unit 332 identifies the image of portion P1 in image RG based on the position information included in the answer information, and performs character recognition on the image of portion P1 to extract characters from the image. Extract the column ("The show was not being far a failure." in this example). The extraction unit 332 treats the character string as the character string of the answer to question 1 .

Next, the extraction unit 332 identifies the image of the portion P2 in the image RG based on the position information included in the answer information, and performs character recognition on the image of the portion P2 from the image to obtain a character string (in this example, " Your idea is truly great, but it is an impractical.”). The extraction unit 332 uses the character string as the character string of the answer to question 2 .

Next, the extraction unit 332 identifies the image of the portion P3 in the image RG based on the position information included in the answer information, and performs character recognition on the image of the portion P3 from the image to obtain a character string (in this example, " D"). The extraction unit 332 uses the character string as the character string of the answer to Question 3.

At least one element is included in the character string of the answer for each question extracted by the extraction unit 332 . An element is a character (eg, alphabet, kanji, hiragana, katakana, etc.), number, or symbol. When two or more elements are included in the extracted character string of the answer for each question (for example, the character string of the answer to question 1 or the character string of the answer to question 2 in the image RG shown in FIG. 6), the extraction unit 332 column, etc.), the position of the image corresponding to each element in the image corresponding to the character string of the answer to the question is further specified.

Note that when the number of elements included in the character string of the answer for each question extracted by the extraction unit 332 is 1 (for example, the character string of the answer to question 3 in the image RG shown in FIG. 6), the question The part of the image corresponding to one element contained in the image matches the part of the image corresponding to the character string of the answer to the question.

Referring to FIG. 4 again, the evaluation unit 333 compares the character string of the answer extracted by the extraction unit 332 with the character string of the correct answer to evaluate whether the character string of the answer is right or wrong for each question. The correct character strings are associated with the first table 324 stored in the storage device 320 .

Here, an evaluation method by the evaluation unit 333 will be described with reference to FIGS. 6 and 7. FIG. FIG. 7 is a diagram showing an example of the first table. In the first table 324, correct character strings are associated with each question. Specifically, the first table 324 associates question numbers with correct character strings for questions corresponding to the question numbers.

The correct string contains at least one group of strings. In the example shown in FIG. 7, the correct string for question 1 contains groups of 4 strings, the correct string for question 2 contains groups of 3 strings, and the correct string for question 3 contains 1 group of strings. contains a group of one string.

If the correct character string and the answer character string match in all groups associated with one question number, the evaluation unit 333 determines that the answer character string for the question corresponding to the question number is correct. evaluate. On the other hand, if the correct character string and the answer character string do not match in at least one group among the groups associated with one question number, the evaluation unit 333 determines the correct character string and the answer character string. In the group that does not match, the character string of the answer to the question corresponding to the question number is evaluated as incorrect.

As an example, when the image of the answer sheet received by the second communication unit 331 is the image RG shown in FIG. 6 and 7, first, evaluation unit 333 converts the character string of the answer to question 1 extracted by extraction unit 332 to the correct answer associated with question number “1” in first table 324. By comparing with the character string of , the group in which the difference occurs (the third group in this example) is specified. The evaluation unit 333 evaluates that the character string of the answer to question 1 is incorrect in the specified group (the third group in this example).

Next, the evaluation unit 333 compares the character string of the answer to the question 2 extracted by the extraction unit 332 with the correct character string associated with the question number “2” in the first table 324, thereby obtaining the difference is occurring (in this example, the first and third groups). The evaluation unit 333 evaluates that the character string of the answer to Question 2 is incorrect in the identified groups (the first group and the third group in this example).

Next, the evaluation unit 333 compares the character string of the answer to the question 3 extracted by the extraction unit 332 with the correct character string associated with the question number “3” in the first table 324, thereby obtaining the difference identify groups in which In this example, no group has a difference. The evaluation unit 333 evaluates that the character string of the answer to Question 3 is correct.

Referring to FIG. 4 again, the first generation unit 334 generates at least one correction image based on the evaluation result of the evaluation unit 333. FIG. The corrected images include at least one of a first corrected image, a second corrected image, a third corrected image, and a fourth corrected image. The first generation unit 334 determines the arrangement position of at least one generated correction image based on the position of the image of the part corresponding to the character string of the answer in the image of the answer sheet read by the reading unit 131 . At this time, the first generation unit 334 determines the arrangement positions of the corrected images so that the generated at least one corrected image does not overlap.

The first corrected image shows that the correct character string and the answer character string match. The second correction image shows the difference between the correct character string and the answer character string. The third corrected image shows an explanation based on the difference between the correct character string and the answer character string. A fourth correction image shows a score based on the evaluation result. The fourth correction image may further include an image showing a score according to the difference between the correct character string and the answer character string. The first generator 334 refers to the second table 326 when generating the third corrected image. Also, the first generator 334 refers to the third table 328 when generating the fourth corrected image.

Here, the second table 326 and the third table 328 will be described with reference to FIGS. 8 and 9. FIG.

FIG. 8 is a diagram showing an example of the second table. The second table 326 is associated with explanations corresponding to predetermined character strings among the correct character strings. Specifically, the second table 326 associates question numbers, character string groups, explanation numbers, and explanation contents.

FIG. 9 is a diagram showing an example of the third table. In the third table 328, scores of correct character strings for each group are associated with scores for each question. Specifically, the third table 328 associates question numbers, character string groups, and scores.

Here, referring to FIGS. 4 and 6 to 10, taking the case where the image of the answer sheet received by the second communication unit 331 is the image RG shown in FIG. and a method of determining the arrangement position of the generated correction image.

FIG. 10 is a diagram showing an example of a corrected image. Images G1 to G13 shown in FIG. 10 are examples of correction images generated by the first generation unit 334 when the image of the answer sheet read by the reading unit 131 is the image RG shown in FIG.

First, the first generator 334 generates corrected images (images G1 to G5) corresponding to the answer to question 1. FIG. Image G1, image G2, and image G3 are examples of second corrected images.

Image G1 shows an unnecessary character string (“not” in this example). The first generating unit 334 refers to the image RG, and sets the arrangement position of the image G1 to the vicinity of the image corresponding to the unnecessary character string (“not” in this example) included in the image RG, and The position is determined so as not to overlap any image of the part corresponding to the character string of the answer contained in RG.

Image G2 shows the missing character string (“from” in this example). The first generation unit 334 refers to the image RG, and determines the arrangement position of the image G2 from the part of the image corresponding to the character string (in this example, "not being far") in which the difference is generated in the image RG. A position is determined that is in the neighborhood and does not overlap with any of the images of the part corresponding to the character string of the answer contained in the image RG.

Image G3 shows a character string with an incorrect insertion position (“far” in this example) and the correct insertion position of the character string. The first generation unit 334 refers to the image RG, and determines the arrangement position of the image G3 from the portion of the image corresponding to the character string (“not being far” in this example) in which the difference is included in the image RG. A position is determined that is in the neighborhood and does not overlap with any of the images of the part corresponding to the character string of the answer contained in the image RG.

Image G4 is an example of a third corrected image. Image G4 includes image G41 and image G42. Image G41 shows the number of the commentary to be referred to. Image G42 shows a character string with a difference from the correct character string ("not being far" in this example), that is, the group evaluated by the evaluation unit 333 that the character string in the answer is incorrect ( Then, the commentary corresponding to the third group) is shown.

The first generating unit 334 extracts from the second table 326 the explanation number corresponding to the group (in this example, the third group) in which the evaluation unit 333 has evaluated that the character string in the answer is incorrect, and extracts the extracted explanation. An image G41 is generated based on the number. The first generating unit 334 refers to the image RG, and determines that the arrangement position of the image G41 is different from the correct character string included in the image RG, and the character string to be explained (in this example, “not being far”) and not overlap with all the images of the part corresponding to the character string of the answer contained in the image RG.

The first generating unit 334 extracts from the second table 326 the commentary content corresponding to the group (in this example, the third group) in which the evaluation unit 333 has evaluated that the character string of the answer is incorrect, and extracts the extracted commentary. An image G42 is generated based on the content. The first generating unit 334 refers to the image RG, and sets the layout position of the image G42 to the vicinity of the part of the image corresponding to the character string of the corresponding answer (in this example, the answer to Question 1) included in the image RG. Also, it is determined at a position (in this example, between the character string of the answer to question 1 and the character string of the answer to question 2) that does not overlap with any part of the image corresponding to the character string of the answer contained in the image RG. .

Image G5 is an example of a fourth corrected image. Image G5 includes image G51 and image G52. The image G51 shows the demerit points according to the difference between the character string of the answer and the character string of the correct answer. An image G52 indicates the number of points calculated based on the evaluation result by the evaluation unit 333. FIG.

The first generating unit 334 refers to the third table 328, and uses the score associated with the group (in this example, the third group) in which the character string of the answer is evaluated to be incorrect as a demerit score. Generate G51. The first generating unit 334 refers to the image RG, and determines the layout position of the image G51 from the portion of the image corresponding to the character string (in this example, “not being far”) in which the difference is generated in the image RG. A position is determined that is in the neighborhood and does not overlap with any of the images of the part corresponding to the character string of the answer contained in the image RG.

In addition, the first generation unit 334 refers to the third table 328, and from the score (8 points in this example) associated with question 1, the group evaluated that the character string of the answer is incorrect ( In this example, the image G52 is generated with the score obtained by subtracting the score (4 points in this example) associated with the third group) as the score. The first generation unit 334 refers to the image RG, and sets the arrangement position of the image G52 to the vicinity of the part of the image corresponding to the character string of the corresponding answer (in this example, the answer to Question 1) included in the image RG. In addition, the position (in this example, the left side of the character string of the answer to Question 1) is determined so as not to overlap with all the images of the part corresponding to the character string of the answer contained in the image RG.

Next, the first generation unit 334 generates corrected images (images G6 to G11) corresponding to the answer to Question 2. FIG. Image G6, image G7, and image G8 are examples of second corrected images.

Image G6 shows a character string with an incorrect insertion position ("Truly" in this example) and the correct insertion position of the character string. The first generating unit 334 refers to the image RG, and sets the arrangement position of the image G6 to the part corresponding to the character string (in this example, "Your idea is truly great,") in which the difference is generated in the image RG. and not overlap with all the images of the part corresponding to the character string of the answer contained in the image RG.

Image G7 shows an erroneous character string (“Y” in this example) and how the character should be corrected. The first generation unit 334 refers to the image RG, and sets the layout position of the image G7 to the vicinity of the image corresponding to the incorrect character string (“Y” in this example) included in the image RG, and The position is determined so as not to overlap any part of the image corresponding to the character string of the answer contained in the image RG.

Image G8 shows an unnecessary character string ("an" in this example). The first generation unit 334 refers to the image RG, and sets the arrangement position of the image G8 to the vicinity of the image corresponding to the unnecessary character string (“an” in this example) included in the image RG, and The position is determined so as not to overlap any image of the part corresponding to the character string of the answer contained in RG.

Image G9 and image G10 are examples of a third correction image. The image G9 includes an image G91 and an image G92. Image G10 includes image G101 and image G102.

Image G91 and image G101 show the number of the commentary to be referred to. The image G92 is a character string having a difference from the correct character string (“Your idea is truly great,” in this example), that is, the group evaluated by the evaluation unit 333 that the character string of the answer is incorrect. (in this example, the first group). Image G102 shows a character string with a difference from the correct character string ("it is an impractical." in this example), that is, the group evaluated by the evaluation unit 333 that the character string in the answer is incorrect ( In this example, a commentary corresponding to the third group) is shown.

The first generating unit 334 generates the image G91 and the image G101 by the same method as for the image G41, and determines the layout positions of the image G91 and the image G101 by the same method as for the image G41. Further, the first generator 334 generates the image G92 and the image G102 by the same method as for the image G42, and determines the layout positions of the image G92 and the image G102 by the same method as for the image G42.

Image G11 is an example of a fourth corrected image. The image G11 includes an image G111, an image G112, and an image G113. Image G111 and image G112 show demerit points according to the difference between the character string of the answer and the character string of the correct answer. An image G<b>113 indicates the number of points calculated based on the evaluation result by the evaluation unit 333 .

The first generating unit 334 generates the image G111 and the image G112 by the same method as for the image G51, and determines the layout positions of the image G111 and the image G112 by the same method as for the image G51. Also, the first generator 334 generates the image G113 by the same method as for the image G52, and determines the arrangement position of the image G113 by the same method as for the image G52.

Next, the first generator 334 generates correction images (image G12 and image G13) corresponding to the answer to Question 3. FIG. Image G12 is an example of a first corrected image. The first generation unit 334 generates the image G12 based on the fact that the evaluation unit 333 has evaluated that the character string of the answer to Question 3 is correct. The first generating unit 334 refers to the image RG, and sets the arrangement position of the image G12 to the vicinity of the part of the image corresponding to the character string of the corresponding answer (in this example, the answer to question 3) included in the image RG. In addition, the position is determined so as not to overlap with any of the images of the part corresponding to the character string of the answer contained in the image RG. Note that the arrangement position of the image G12 may be a position superimposed on a portion of the image corresponding to the character string of the corresponding answer (in this example, the answer to question 3) included in the image RG.

Image G13 is an example of a fourth corrected image. The first generation unit 334 refers to the third table 328 and generates the image G13 using the score (2 in this example) associated with question 3 as the score. The first generation unit 334 refers to the image RG, and sets the arrangement position of the image G13 to the vicinity of the part of the image corresponding to the character string of the corresponding answer (in this example, the answer to Question 3) included in the image RG. In addition, the position (in this example, the left side of the character string of the answer to Question 3) is determined so as not to overlap with all the images of the part corresponding to the character string of the answer contained in the image RG.

Note that the first generation unit 334 may determine the size of the generated correction image based on the size of the image of the part of the image of the answer sheet that corresponds to the character string of the answer.

Referring to FIG. 4 again, second communication unit 331 transmits correction information to image forming apparatus 100 via communication interface 303 (see FIG. 3). The correction information includes at least one correction image generated by the first generation unit 334 (for example, images G1 to G13 in FIG. 10) and position information indicating the arrangement position of the image. The arrangement position of each correction image is relative to the position of the part of the image of the answer sheet received by the second communication unit 331 that corresponds to the character string of the answer to each question.

The second communication unit 331 transmits at least one correction image generated by the first generation unit 334 and position information indicating the arrangement position of the image as one packet for each correction image. Accordingly, even if communication is interrupted during transmission of correction information, the information processing apparatus 300 only needs to resend packets that have not yet arrived to the image forming apparatus 100, thereby reducing the communication load.

The second communication unit 331 synthesizes the corrected images generated by the first generation unit 334 for each question, and indicates the synthesized image (hereinafter also referred to as a “composite image”) and the arrangement position of the synthesized image. location information may be transmitted to the image forming apparatus 100 . In that case, the layout position of the composite image is relative to the position of the part of the image of the answer sheet received by the second communication unit 331 that corresponds to the character string of the answer to each question.

The first communication unit 133 receives correction information from the information processing device 300 via the communication interface 103 (see FIG. 2).

The second generating unit 134 generates print data for arranging at least one correction image received from the information processing apparatus 300 on the sheet based on the position of the image of the part corresponding to the character string of the answer in the image of the answer sheet. Generate. The print data indicates the arrangement position of the corrected image in the print target area. The second generating unit 134 generates the print data based on the position of the part of the image of the answer sheet read by the reading unit 131 that corresponds to the character string of the answer and the position information included in the correction information. do.

The printing unit 135 prints the corrected image on the answer sheet read by the reading unit 131 based on the print data generated by the second generation unit 134 . As a result, the corrected image is printed on the answer sheet on which the examinee has written the answer. The answer sheet on which the corrected image is printed is discharged to the second tray 108 (see FIG. 1). As an example, an answer sheet AS as shown in FIG. 11 is discharged to the second tray 108 .

FIG. 11 is a diagram showing an example of an answer sheet on which a correction image is printed. In the answer sheet AS shown in FIG. 11, the image of the answer sheet read by the reading unit 131 is the image RG shown in FIG. An example of an answer sheet ejected when .

As shown in FIG. 11, the answer sheet AS is an answer sheet on which answers are written by the examinee, and correction images (images G1 to G13) generated by the information processing apparatus 300 are printed on the answer sheet AS. there is On the answer sheet AS, the correction images (images G1 to G13) are arranged according to the position of the character string of the answer written by the examinee.

(4. Processing)
An example of the processing executed by the correction system 1 will be described with reference to FIGS. 4 and 12. FIG. FIG. 12 is a flowchart showing an example of correction processing.

In step S1, the image forming apparatus 100 scans the answer sheet to read the image.

In step S2, the image forming apparatus 100 compares the image of the answer sheet read in step S1 with the sample image SG of the answer sheet stored in the storage device 120 to obtain the image of the answer sheet read in step S1. The position of the image (partial image) of the part corresponding to the character string of the answer is specified.

In step S3, the image forming apparatus 100 transmits answer information. The answer information includes the image read in step S1 and position information indicating the position of the partial image specified in step S2.

In step S4, the information processing device 300 receives answer information.

In step S5, the information processing apparatus 300 performs character recognition on the image of the answer sheet included in the answer information to extract the character string of the answer from the image.

In step S6, the information processing device 300 compares the character string of the answer extracted in step S5 with the character string of the correct answer stored in the storage device 320, thereby evaluating the correctness of the character string of the answer for each question. do.

In step S7, the information processing device 300 generates at least one correction image based on the evaluation result of step S6.

In step S8, the information processing apparatus 300 determines the placement position of the corrected image generated in step S7.

In step S<b>9 , the information processing device 300 transmits the correction information to the image forming device 100 . The correction information includes the corrected image generated in step S7 and position information indicating the arrangement position determined in step S8.

In step S10, the image forming apparatus 100 receives correction information.

In step S11, the image forming apparatus 100 arranges at least one corrected image received from the information processing apparatus 300 on the answer sheet based on the position of the image of the part corresponding to the character string of the answer. Generate print data. Specifically, image forming apparatus 100 generates the print data based on the position of the image of the part corresponding to the character string of the answer in the image of the answer sheet read in step S1 and the position information included in the correction information. Generate.

In step S12, the image forming apparatus 100 prints the corrected image based on the print data generated in step S11 on the answer sheet from which the image was read in step S1, that is, the answer sheet on which the examinee wrote the answers.

After step S12, the image forming apparatus 100 ends the series of processes shown in FIG.

Thus, according to the embodiment, the correction image is arranged on the answer sheet based on the position of the image of the part corresponding to the character string of the answer in the image of the answer sheet. This prevents the corrected image from becoming difficult to see.

Further, according to the embodiment, the corrected image is printed on the answer sheet on which the examinee has written the answer. Therefore, the examinee can review using the answer sheet on which he or she has written the answers.

Further, according to the embodiment, the image forming apparatus 100 identifies the position of the image of the part corresponding to the character string of the answer in the image of the answer sheet read by the reading unit 131 . processing load is reduced.

Further, according to the embodiment, when the character string of the answer is correct, the first correction image showing that the character string of the correct answer and the character string of the answer match is printed. This allows the examinee to understand that the character string of the answer is correct.

Further, according to the embodiment, when the character string of the answer is incorrect, the second corrected image showing the difference between the correct character string and the answer character string is printed. As a result, the examinee can grasp the erroneous part.

Further, according to the embodiment, when the character string of the answer is incorrect, the third correction image showing the explanation based on the difference between the correct character string and the answer character string is printed. As a result, it is possible to present the examinee with an explanation corresponding to the part of the error. Therefore, examinees can review efficiently.

Further, according to the embodiment, the fourth correction image showing the score based on the evaluation result regarding the correctness of the character string of the answer is printed. This allows the examinee to grasp the score.

Further, according to the embodiment, when the character string of the answer is incorrect, an image showing the score corresponding to the difference between the correct character string and the character string of the answer is printed. As a result, the examinee can grasp the score of the error part.

Further, according to the embodiment, the size of the corrected image is determined based on the size of the image of the part of the image of the answer sheet that corresponds to the character string of the answer. This prevents the corrected image from becoming difficult to see.

Note that the answer string may include at least one letter, at least one number, and/or at least one symbol. In the above description, generation of a correction image is described using an English test as an example. Also, the correction image can be arranged on the answer sheet based on the position of the image of the part corresponding to the character string of the answer among the images of the answer sheet. In addition, it is possible to print a corrected image corresponding to the correctness or incorrectness of the character string of the answer.

Also, the program 322 shown in FIG. 3 may be a correction program for causing a computer to execute the correction method described below. The correction method is to scan the descriptive answer sheet with the scanner 104 to read the image, to extract the character string of the answer from the image by character recognition of the image of the answer sheet, and to extract the character string of the answer from the image. Evaluating the correctness/incorrectness of the answer character string by comparing the answer character string with the correct answer character string, generating a correction image based on the evaluation result regarding the correctness/incorrectness of the answer character string, and generating print data to be arranged on the paper based on the position of the image of the part corresponding to the character string of the answer in the image of the paper.

Further, the specifying unit 132 may be provided in the information processing device 300 . In that case, it is assumed that the sample image SG of the answer sheet is stored in the storage device 320 . In that case, the second communication unit 331 receives the correction information and the position specified by the specifying unit 132, that is, the character string of the answer in the image of the answer sheet received by the second communication unit 331. Position information indicating the position of the partial image is transmitted to the image forming apparatus 100 . In addition, the second generating unit 134 generates information received from the information processing device 300, that is, position information indicating the position of the image of the part corresponding to the character string of the answer in the image of the answer sheet, and the position included in the correction information. and generating print data based on the information. Then, the printing unit 135 prints the corrected image on the answer sheet read by the reading unit 131 based on the print data.

Also, in the above description, the correction image is printed on the answer sheet itself on which the answers are written, but it may be printed on a copy of the answer sheet on which the answers are written.

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the meaning and range of equivalents of the scope of the claims.

1 correction system, 100 image forming apparatus, 101, 301 processor, 102, 302 main memory, 103, 303 communication interface, 104 scanner, 105 printer, 106 operation panel, 107 first tray, 108 second tray, 119, 319 inside bus, 120, 320 storage device, 122, 322 program, 131 reading unit, 132 identification unit, 133 first communication unit, 134 second generation unit, 135 printing unit, 300 information processing device, 305 operation interface, 306 display interface, 307 optical drive, 307A optical disk, 310 input device, 311 display, 324 first table, 326 second table, 328 third table, 331 second communication unit, 332 extraction unit, 333 evaluation unit, 334 first generation unit.

Claims (12)

A correction system comprising an image forming device and an information processing device,
The image forming apparatus is
a reading unit that scans a descriptive answer sheet and reads an image;
a first communication unit that transmits an image of the answer sheet read by the reading unit to the information processing device;
The information processing device is
an extraction unit that extracts a character string of an answer from the image of the answer sheet received from the image forming apparatus by character recognition;
an evaluation unit that evaluates whether the character string of the answer is correct or wrong by comparing the extracted character string of the answer with the character string of the correct answer;
a first generation unit that generates a corrected image based on the evaluation result of the evaluation unit;
a second communication unit that transmits the corrected image to the image forming apparatus;
The image forming apparatus generates print data for arranging the corrected image received from the information processing apparatus on a sheet based on the position of a portion of the image of the answer sheet corresponding to the character string of the answer. A correction system, further comprising a generator. 2. The correction system of claim 1, wherein the form comprises the answer sheet. 3. The image forming apparatus according to claim 1, further comprising a specifying unit that specifies a position of a portion of the image of the answer sheet read by the reading unit that corresponds to the character string of the answer. Correction system described. 3. The information processing apparatus according to claim 1, further comprising a specifying unit that specifies a position of a portion of the image of the answer sheet read by the reading unit that corresponds to the character string of the answer. Correction system described. The correction system according to any one of claims 1 to 4, wherein the correction images include a first correction image showing that the correct character string and the answer character string match. 6. The correction system according to any one of claims 1 to 5, wherein said correction image includes a second correction image showing a difference between said correct character string and said answer character string. 7. The correction system of claim 6, wherein the correction images include a third correction image showing a commentary based on the difference. 8. The correction system according to claim 6, wherein said correction image includes a fourth correction image indicating a score based on said evaluation result. 9. The correction system according to claim 8, wherein said fourth correction image includes an image indicating a score according to said difference. 10. The first generator according to any one of claims 1 to 9, wherein the size of the correction image is determined based on the size of a portion of the image of the answer sheet corresponding to the character string of the answer. Correction system as described in paragraph. A computer implemented correction method comprising:
causing a scanner to scan a descriptive answer sheet and read the image;
extracting a character string of the answer from the image of the answer sheet by character recognition;
Evaluating whether the character string of the answer is correct or wrong by comparing the extracted character string of the answer with the character string of the correct answer;
generating a correction image based on an evaluation result regarding the correctness or incorrectness of the character string of the answer;
and generating print data for arranging the correction image on the answer sheet based on the position of the image of the part corresponding to the character string of the answer in the answer sheet. A correction program for causing a computer to execute the correction method according to claim 11.

Images