JP2015225094A - Explanation moving image distribution system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system capable of providing a participant with an explanation tuned to an answer the participant of a correspondence course wrote in a paper-medium booklet for answers.SOLUTION: A terminal device 2 performs image recognition of an image of a question identification number 41 and an answer field 40 included in an image obtained by photographing the answer field 40 after an answer being written transmits the image of the question identification number 41 and the answer field 40 to an explanation moving image distribution device 3, and then reproduces an explanation moving image distributed by the explanation moving image distribution device 3. On receiving the image of the question identification number 41 and the answer field 40 from the terminal device 2, the explanation moving image distribution device 3 obtains answer data by performing image recognition of the image of the answer field 40, refers to an answer type DB 32 to identify an answer type corresponding to the answer written in the answer field 40, then refers to an explanation moving image DB 33, and distributes an explanation moving image corresponding to the answer type identified by an answer analysis unit 30 among explanation moving images corresponding to the question identification number 41 received from the terminal device 2 to the terminal device 2.

Description

  The present invention relates to a technique for delivering a commentary video corresponding to an answer entered in an answer booklet on a paper medium.

  In correspondence courses such as taking exams, a paper problem booklet with multiple questions printed and a paper medium explanation booklet with explanations of the problems are mailed to the correspondence course students. After solving the problem printed on, refer to the explanation booklet to determine the correct or incorrect answer and the cause of the incorrect answer.

  It is desirable that the level of the problem printed on the problem booklet can be changed according to the level of the student. Currently, the problem booklet can be printed by on-demand printing so that the contents of the problem booklet can be changed by the student. It has become common. Regarding the explanation booklet, I would like to print an explanation booklet with content that matches the student's answer by on-demand printing, but the answer varies depending on the student. It is difficult to print by printing.

  In the field of e-learning using a network, a system that provides students with correction data that matches the students' answers has already been disclosed. For example, Patent Document 1 discloses an invention in which an answer is transmitted from a student's terminal to a server, and a correction document created by the corrector is transmitted as correction data from the server to the student's terminal. Patent Document 2 discloses an invention in which a correction comment based on an answer obtained from a student can be selected from correction comments set in a question transmitted to the student.

JP 2001-305943 A JP 2007-264117 A

  However, the conventional technology is an invention that uses a network to send and receive questions and answers to questions, and provides answers to the students in the correspondence course when the answers are written in a paper-based answer booklet. I couldn't.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a system that can provide a student with a commentary that matches the answer that a student of a correspondence course has entered in a paper-based answer booklet.

The present invention for solving the above-described problems is an answer booklet printed with an answer column with a problem identification number for identifying a problem, a terminal device possessed by a student of a communication course, and a network connection with the terminal device. It is a system composed at least of the commentary video distribution device.
The terminal device includes an image photographing unit for instructing the user to take a picture of the answer field after the answer is entered and acquiring an image taken by the user as a function capable of taking an image of the answer field after the answer is entered. The question identification number and the answer field included in the image acquired by the image photographing unit as a function of transmitting the question identification number corresponding to the answer field in which the image is entered and the image of the answer field to the commentary video distribution device The comment video is provided as a function of recognizing the image of the image and sending the comment video distributed by the comment video distribution device, and having an answer transmission unit that transmits the question identification number and the image in the answer column to the comment video distribution device. A comment video playback unit for playing comment videos distributed by the distribution apparatus is provided.
In addition, the commentary video distribution device, as a database, in association with the problem identification number, an answer type database that stores the answer type set for the problem corresponding to the question identification number, and the problem identification number, A comment video database storing comment videos for each answer type is provided, and the problem identification number and the answer column image are sent from the terminal device as a function for specifying the answer type corresponding to the answer entered in the answer column. Is received, the answer data is obtained by recognizing the image of the answer field, and the answer data is referred to the answer type database, and the answer data is selected from the answer types set for the question corresponding to the question identification number. An answer analysis unit that identifies the answer type corresponding to the answer type is provided, and a commentary video corresponding to the answer type of the answer entered in the answer column is distributed. A comment video distribution unit that refers to the comment video database and distributes a comment video corresponding to the answer type identified by the answer analysis unit from the comment videos corresponding to the problem identification number to the terminal device. Prepare.

  Thus, according to the present invention described above, an object of the present invention is to provide a system that can provide the student with a commentary that matches the answer entered in the answer booklet on the paper medium by the student of the correspondence course.

The figure explaining the structure of the commentary video delivery system which concerns on this embodiment. The figure explaining the answer booklet concerning this embodiment. The figure explaining the terminal device which concerns on this embodiment. The figure explaining the comment video distribution device concerning this embodiment. The figure explaining operation | movement of the commentary video delivery system.

  From here, preferred embodiments of the present invention will be described. The following description is not intended to limit the scope of the present invention, but is provided to aid understanding.

  FIG. 1 is a diagram for explaining the configuration of a commentary video distribution system 1 according to the present embodiment, FIG. 2 is a diagram for explaining an answer booklet 4 according to the present embodiment, and FIG. 3 is a terminal device 2 according to the present embodiment. FIG. 4 is a diagram for explaining the explanation video distribution device 3 according to the present embodiment, and FIG. 5 is a diagram for explaining the operation of the explanation video distribution system 1.

  As shown in FIG. 1, FIG. 1 shows a commentary video distribution system 1 according to the present embodiment, a paper medium answer booklet 4 delivered to a correspondence course student, and a terminal device 2 possessed by the student. , And at least the commentary video distribution device 3 connected to the terminal device 2 via the network 5.

  The answer booklet 4 according to the present embodiment will be described with reference to FIG. The answer booklet 4 according to the present embodiment is a paper medium booklet printed by on-demand printing. As shown in FIG. 2, the answer booklet 4 includes a problem sentence 4a and a diagram for explaining the problem, a problem identification number 41 for identifying the problem, and an answer column 40 for the student to write the answer by hand. Printed every time.

  In FIG. 2, the problem identification number 41 itself is printed under the question sentence 4a using OCR characters. However, if the problem identification number 41 can be identified by image recognition, the printing form of the problem identification number 41 may be arbitrary. For example, a barcode obtained by encoding the problem identification number 41 may be printed on the answer booklet 4. In FIG. 2, a square answer field 40 is printed under the question identification number 41.

  Next, the terminal device 2 according to the present embodiment will be described with reference to FIG. The terminal device 2 is a device realized by using a general-purpose computer device having a photographing function, and a smartphone or tablet with a digital camera, or a personal computer connected with a digital camera can be used as the terminal device 2.

  As illustrated in FIG. 3, the terminal device 2 according to the present embodiment instructs the student to shoot the answer column 40 after answer entry as a function realized by a computer program operating on the terminal device 2. The image capturing unit 20 that acquires an image captured by the student, and the image of the problem identification number 41 and the answer column 40 included in the image acquired by the image capturing unit 20 are image-recognized, and the problem identification number 41 and the answer column 40 An answer transmission unit 21 that transmits an image to the commentary video distribution device 3 and a commentary video reproduction unit 22 that reproduces the commentary video distributed by the commentary video distribution device 3 are provided.

  When the image capturing unit 20 of the terminal device 2 displays an image captured by the digital camera connected to the terminal device 2 on the display 2a of the terminal device 2, and the student performs an operation of capturing the image, A process of storing the time image in the memory is executed.

  The answer transmission unit 21 of the terminal device 2 recognizes the image of the problem identification number 41 and the answer column 40 included in the image stored in the memory by the image photographing unit 20, and explains the image of the problem identification number 41 and the answer column 40. Processing to transmit to the moving image distribution device 3 is executed. The answer transmission unit 21 of the terminal device 2 recognizes the problem identification number 41 using the characteristics of the problem identification number 41. In FIG. 2, since the problem identification number 41 is printed with OCR characters, the answer transmission unit 21 of the terminal device 2 recognizes the OCR characters included in the image stored in the memory by the image photographing unit 20 as a problem. The identification number 41 is extracted. In addition, the answer transmission unit 21 of the terminal device 2 recognizes the image of the answer column 40 using the features of the answer column 40. In FIG. 2, since the square answer field 40 is printed under the question identification number 41, the answer transmission unit 21 of the terminal device 2 recognizes the image of the square figure under the question identification number 41. Thus, the image in the answer column 40 is extracted.

  The commentary video playback unit 22 of the terminal device 2 decodes the commentary video distributed from the commentary video distribution device 3 and executes processing for displaying the decoded commentary video on the display 2 a of the terminal device 2.

  Next, the explanation video distribution device 3 according to the present embodiment will be described with reference to FIG. The explanation video distribution device 3 is a device realized by using a general-purpose server, and is associated with the problem identification number 41 as a database (DataBase) and data related to the answer type of the problem corresponding to the problem identification number 41 The answer type DB 32 storing the answer, the comment video DB 33 storing the explanation video for each answer type in association with the problem identification number 41, and the answer type obtained from the image of the answer column 40 received from the terminal device 2 At least an answer DB 34 for storing is provided. Further, as a function realized by a computer program, when the problem identification number 41 and the image of the answer column 40 are received from the terminal device 2, the image of the answer column 40 transmitted from the terminal device 2 is obtained. Answer data is obtained by image recognition, and the answer type DB 32 is referred to, and the answer type corresponding to the answer entered in the answer column 40 is specified. With reference to the answer analysis unit 30 and the explanation video DB 33, the explanation video corresponding to the answer type identified by the answer analysis unit 30 is selected from the explanation videos corresponding to the problem identification number 41 received from the terminal device 2. A comment video distribution unit 31 is provided.

  The answer type DB 32 of the commentary video distribution device 3 is a DB that stores the answer type data and its type number in association with the question identification number 41 as data related to the answer type of the question. When the problem to be printed in the booklet is determined, typical answers that can be assumed from this problem are prepared, and the typical answer includes the correct answer and some typical errors. For each typical answer, answer type data defining an answer type is prepared, and a type number for identifying each is assigned to the answer type data.

  The specific contents of the answer type data differ depending on the type of question. For example, if the question is a selection question, the options prepared in the selection question can be used as answer type data. In addition, in the case of a problem in which English words are entered, in addition to correct words, words that are typical errors (for example, easily mistaken words or suffix errors) can be used as answer type data. Furthermore, in the case of a problem that requires the description of mathematical expressions, for example, each mathematical expression included in the model answer can be used as answer type data.

  The commentary video DB 33 of the commentary video distribution device 3 stores a commentary video corresponding to the type number in association with the problem identification number 41. In addition, the answer DB 34 of the moving image distribution device stores the type number of the answer type specified by the answer analysis unit 30 in association with the problem identification number 41. Note that the explanation video distribution device 3 includes the answer DB 34 by counting the type numbers for each problem identification number so that the tendency of wrong answers can be grasped and used for the creation of questions and the creation of explanation videos. It is to make it.

  When the answer analysis unit 30 of the comment video distribution device 3 receives the problem identification number 41 and the image of the answer column 40 from the terminal device 2, the answer entered in the answer column 40 is recognized by recognizing the image of the answer column 40. After obtaining the answer data corresponding to, the answer type DB 32 is referred to, and the answer type data associated with the problem identification number 41 and the answer data are collated to determine the answer entered in the answer column. The type number is specified, and the problem identification number 41 and the type number are transferred to the commentary moving image distribution unit 31.

  The answer analysis unit 30 of the commentary video distribution device 3 has various image recognition engines so that answer data that can be collated with the answer type data is obtained. The image recognition engine includes a handwritten character recognition engine that recognizes handwritten characters included in an image, a mathematical expression recognition engine that recognizes mathematical expressions included in an image, and a graphic recognition engine that recognizes graphics included in an image.

  When the problem identification number 41 and the type number are delivered, the explanation video distribution unit 31 of the description video distribution device 3 refers to the description video DB 33 and distributes the explanation video to the terminal device 2 using the problem identification number 41 and the type number. And the specified commentary video is distributed to the terminal device 2.

  From here, the operation of the commentary video distribution system 1 will be described with reference to FIG. After the answer is written in the answer column 40 printed on the answer booklet 4, when the student performs an operation of reproducing the question explanation video on the terminal device 2, first, the image photographing unit 20 of the terminal device 2 is activated. The image capturing unit 20 of the terminal device 2 displays the image captured by the digital camera connected to the terminal device 2 on the display 2a of the terminal device 2, and then the answer column 40 to which the problem identification number 41 is added. When the student is instructed to take the image and the student performs an operation of taking an image, the image at this time is stored in the memory (S1).

  When the image captured by the student is stored in the memory, the answer transmission unit 21 of the terminal device 2 is activated, and the answer transmission unit 21 of the terminal device 2 includes the problem identification number included in the image stored in the memory by the image shooting unit 20. 41 and the image of the answer column 40 are image-recognized (S2), and the problem identification number 41 and the image of the answer column 40 are transmitted to the commentary video distribution device 3 (S3).

  When the answer analysis unit 30 of the comment video distribution device 3 receives the question identification number 41 and the image of the answer column 40 from the terminal device 2, the image of the answer column 40 is converted into an image using the image recognition engine of the answer analysis unit 30. By recognizing, after obtaining the answer data corresponding to the answer entered in the answer column 40 (S4), referring to the answer type DB 32, the answer type data and answer data associated with the problem identification number 41 are obtained. A type number is specified by collation determination (S5).

  When the answer analysis unit 30 of the commentary video distribution device 3 specifies the type number, the type number is stored in the answer DB 34 in a state associated with the problem identification number 41 received from the terminal device 2 (S6), and then the terminal device 2 The problem identification number 41 and the type number received from are delivered to the moving image distribution unit.

  When the problem identification number 41 and the type number are delivered, the explanation video distribution unit 31 of the description video distribution device 3 refers to the description video DB 33 and distributes the explanation video to the terminal device 2 using the problem identification number 41 and the type number. Is distributed to the terminal device 2 (S7), and the commentary video playback unit 22 of the terminal device 2 reproduces the commentary video distributed from the commentary video distribution device 3 on the display 2a of the terminal device 2. This procedure ends.

DESCRIPTION OF SYMBOLS 1 Explanation video delivery system 2 Terminal device 20 Image photographing part 21 Answer transmission part 22 Explanation video reproduction part 3 Explanation video delivery apparatus 30 Answer analysis part 31 Explanation video delivery part 32 Answer type DB
33 commentary movie DB
34 Answer DB
4 Answer booklet 40 Answer column 41 Question identification number

Claims (1)

It consists of at least an answer booklet with an answer column with a problem identification number added to identify the problem, a terminal device possessed by a student in a correspondence course, and a commentary video distribution device connected to the terminal device via a network. A system,
The terminal device instructs the user to shoot the answer field after answer entry, acquires an image captured by the user, the problem identification number included in the image acquired by the image capturing unit, and the An answer sending unit for recognizing the image in the answer field and transmitting the question identification number and the image in the answer field to the explanation video distribution device, and a comment video reproduction unit for reproducing the explanation video distributed by the explanation video delivery device Prepared,
The comment video distribution device stores an answer type database that stores an answer type set for a question corresponding to the question identification number in association with the question identification number, and an explanation for each answer type in association with the question identification number. When the comment video database storing the video and the question identification number and the image of the answer field are received from the terminal device, the answer type is obtained by recognizing the image of the answer field, and then the answer type Refers to the database, refers to the answer analysis unit for identifying the answer type corresponding to the answer data from the answer types set for the question corresponding to the question identification number, and refers to the commentary video database, and determines the question identification number. Commentary video distribution unit that distributes commentary videos corresponding to the answer type identified by the answer analysis unit to the terminal device from commentary videos corresponding to Commentary video distribution system, characterized in that it includes.

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