WO2023123590A1 - 基于手写轨迹识别的答题处理方法、手写笔、系统及终端 - Google Patents

基于手写轨迹识别的答题处理方法、手写笔、系统及终端 Download PDF

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WO2023123590A1
WO2023123590A1 PCT/CN2022/073596 CN2022073596W WO2023123590A1 WO 2023123590 A1 WO2023123590 A1 WO 2023123590A1 CN 2022073596 W CN2022073596 W CN 2022073596W WO 2023123590 A1 WO2023123590 A1 WO 2023123590A1
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Prior art keywords
answer
information
answering
area
module
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PCT/CN2022/073596
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English (en)
French (fr)
Inventor
欧东晓
程扬硕
汪凯恒
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深圳市众鑫创展科技有限公司
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Publication of WO2023123590A1 publication Critical patent/WO2023123590A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/32—Digital ink

Definitions

  • the present invention relates to the field of stylus technology, and in particular to a method for answering questions based on handwriting trajectory recognition, a stylus with an automatic answering function, a stylus system with an automatic answering function, and an intelligent terminal.
  • the technical problem to be solved by the present invention is to provide a method for answering questions based on handwriting trajectory recognition, a stylus with an automatic answering function, a stylus system with an automatic answering function, and an intelligent terminal for the above-mentioned defects of the prior art.
  • the present invention can not only realize the basic functions of the stylus, but also realize the handwritten answer and identify the handwritten answer, judge whether the handwritten answer and the answer to the corresponding question are correct, provide convenience for the user, and realize the function of an intelligent stylus , providing convenience for users.
  • a method for answering questions based on handwriting trajectory recognition includes:
  • the handwriting information is compared and judged with the reference answer information in the current answer area, and a corresponding judgment result is output.
  • the step of acquiring handwriting information in the current answer area includes:
  • pre-set reference answer information corresponding to the answer area one by one.
  • the step of acquiring handwriting information in the current answer area further includes:
  • An OID code containing title information or answer information is set for each said answer area, and is used to identify coordinate information and reference answer information corresponding to said answer area by said OID code; each said OID code also includes an answer The coordinate information of the area.
  • the step of acquiring handwriting information in the current answer area includes:
  • the answer processing method based on handwriting trajectory recognition, wherein the scanning identifies the identification code of the current answer area, and obtains the preset coordinate information and reference answer information corresponding to the answer area according to the identification code of the current answer area
  • the steps include:
  • the photosensitive module scans and identifies the identification code of the current answering area
  • the identification code is decoded, and the pre-set question type corresponding to the identification code, and corresponding coordinate information and reference answer information are retrieved.
  • the step of comparing and judging the handwriting information with the reference answer information in the current answer area, and outputting the corresponding judgment result includes:
  • a stylus with an automatic answering function wherein the stylus with an automatic answering function includes:
  • Writing module for writing in the answer area
  • a writing induction acquisition module used to acquire handwriting information in the current answering area
  • the scanning module is used to scan and identify the identification code of the current answering area, and obtain preset coordinate information and reference answer information corresponding to the answering area according to the identification code of the current answering area;
  • the main control module is respectively connected with the writing sensing acquisition module, the scanning module and the writing module, and is used to compare and judge the handwriting information with the reference answer information in the current answer area, and output the corresponding judgment result.
  • the described stylus with automatic answering function wherein, it also includes:
  • a prompt module connected to the main control module is used to give corresponding prompts to the judgment results, the prompts include voice prompts and/or prompt sound prompts;
  • the storage module connected with the main control module is used to pre-store the answer area information for answering questions corresponding to each question to be answered; to pre-store the reference answer information corresponding to the answer area one-to-one; and pre-store Answer area corresponding to each answer area information.
  • the power module connected with the main control module is used to provide working power for the stylus with automatic answering function.
  • the stylus with automatic answering function also includes: answering area information, the answer information does not need to be stored in the storage module in advance, it only needs to be hidden in the OID code, and the answering process is dynamically obtained, and the storage module only needs to identify the OID code During the process, the dynamically obtained information is saved.
  • a stylus with an automatic answering function including a stylus body, which also includes:
  • the pen main casing is hollow, and the pen front casing is arranged on the front end of the pen main casing, and the pen rear casing is arranged on the rear end of the pen main casing;
  • the hollow interior can accommodate and install the main control module, storage module, prompt module and power module;
  • the scanning module is arranged on the front end of the stylus body and is used to scan the code points of the answer sheet;
  • the scanning module includes: a high-speed image sensor and an infrared supplementary light, the high-speed image sensor and the infrared supplementary light are respectively connected to the main control module, and the high-speed image sensor recognizes hidden objects laid on the answer sheet through the infrared supplementary light. information code.
  • the writing module is arranged at the front end of the stylus body and is used for writing answers;
  • the writing module includes a customized refill and a pressure sensing acquisition module
  • a pressure sensing acquisition module is arranged at the rear end of the pen core, and is used to acquire whether the answering pen is in a writing state, and the pressure sensing acquisition module is connected to the main control module;
  • the main control module is responsible for managing and controlling the task operation between each sub-module, and is set in the stylus body;
  • the storage module is set in the stylus body and is used to store fonts, handwriting traces, prompt audio data, product basic setting parameters, topic information, score status data, etc.; the storage module is connected to the main control module ;
  • Prompt module set in the stylus body, including audio decoding chip, speaker, used to play prompt information, answer data, answer results, etc. through the voice template, the speaker is connected with the audio decoding chip, the audio decoding The chip is connected to the main control module;
  • the power supply module is arranged in the stylus body and is used to supply power to the device and manage charging and discharging of the battery.
  • the implementation method of the stylus with automatic answering function mainly includes:
  • the bottom code is superimposed on the electronic document, and the electronic document containing the bottom code information is output to the blank paper through a specific printing method to produce a special answer sheet for use with the answering pen;
  • the answering pen can automatically recognize the answer result and judge the correctness of the answer locally according to the handwriting trace without wireless communication;
  • the answering pen grading system can summarize scores locally and give homework grades without wireless communication.
  • a stylus system with an automatic answering function including the stylus with an automatic answering function, and printed matter;
  • the printed matter is printed with a plurality of question areas and answer areas corresponding to the question areas, and each of the answer areas is printed with an OID code corresponding to the question information, answer information and coordinate information of the answer area.
  • An intelligent terminal including a memory, and one or more programs, wherein one or more programs are stored in the memory, and configured to be executed by one or more processors.
  • the one or more programs include For performing any one of the described methods.
  • the embodiment of the present invention proposes an answer processing method based on handwriting trajectory recognition, a stylus with an automatic answer function, a stylus system with an automatic answer function, and an intelligent terminal.
  • the present invention encodes the question information, answer information, and coordinate information of the answer area through OID coding and then prints them in the answer area of the printed matter, and uses a photosensitive module to identify the OID code in the printed matter to obtain the information of the corresponding question and the information of the corresponding answer.
  • This product writes the answer in the answer area, and also recognizes the coordinate information through the photosensitive module, and the main control module recognizes the content of the handwriting through the obtained coordinate information and the time information of the writing trajectory, and then compares it with the answer in the hidden information code Is the comparison correct?
  • the process of realizing the recognition of handwriting content is completed by the local recognition algorithm.
  • Implement the present invention namely the stylus with automatic answering function based on handwriting trace recognition, has the following effects: the handwriting trace recognition stylus with automatic answering function can realize handwritten answers and carry out real-time judgment scoring to the answers of multiple test question types, and Record the answering time to make the product use closer to the actual question-making scene, which improves the efficiency of answering questions and the interaction of users.
  • the recognition of handwriting content is directly completed by the local recognition algorithm, which does not require network operation and avoids network delays or server failures. And other problems that lead to identification failure, improve the real-time performance and practicability of the product, and provide convenience for users.
  • Fig. 1 is a functional block diagram of a stylus with an automatic question answering function according to Embodiment 1 of the device of the present invention.
  • FIG. 2 is a schematic flowchart of the answer processing method based on handwriting trajectory recognition provided by the first method embodiment of the present invention.
  • Fig. 3 is a schematic structural diagram of a printed product of a specific application example of the present invention.
  • Fig. 4 is a functional block diagram of a stylus with an automatic question answering function according to Embodiment 2 of the device of the present invention.
  • Fig. 5 is a functional block diagram of the stylus function program with automatic answering function of the second embodiment of the device of the present invention.
  • Fig. 6 is a schematic flow chart of the answer processing method based on handwriting trajectory recognition provided by the second method embodiment of the present invention.
  • Fig. 7 is a schematic flowchart of the answer processing method based on handwriting trajectory recognition provided by the third embodiment of the method of the present invention.
  • Fig. 8 is a functional block diagram of an internal structure of a smart terminal provided by an embodiment of the present invention.
  • Fig. 9 is a schematic structural diagram of a stylus with an automatic answering function according to Embodiment 4 of the device of the present invention.
  • Fig. 10 is a flow chart of a reference design of a stylus with automatic question answering function based on handwriting trajectory recognition provided by Embodiment 4 of the method of the present invention.
  • FIG. 11 is a flow chart of handwriting trajectory recognition based on handwriting trajectory recognition with a stylus with automatic question answering function provided by Embodiment 4 of the method of the present invention.
  • the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.
  • the stylus is a new generation of intelligent reading and learning tools developed using the latest international optical image recognition technology and advanced digital voice technology. It embodies the perfect integration of electronic products and the education industry, and realizes the concept of people-oriented technology. The stylus can realize many functions such as writing, notes and calligraphy at the same time.
  • the current point reading pen generally senses the hidden information code in the printed matter through a photosensitive device, and the main control chip realizes the broadcast of the corresponding information according to the hidden information code.
  • the hidden information code in the printed matter is generally compiled and printed in the printed matter through a coding method called OID, which is a graphic that cannot be detected by the naked eye, and is called OID code for short.
  • OID a graphic that cannot be detected by the naked eye
  • the functions of the reading pen and the stylus include point reading, identifying the answer to the corresponding question, and broadcasting the right or wrong of the answer when the reading pen is tapped and held.
  • the point reading pen and stylus of the prior art cannot realize the handwritten answer of the point reading pen, and recognize the handwritten answer, and cannot judge whether the handwritten answer and the answer to the corresponding question are correct, which is sometimes inconvenient for users to use.
  • the present invention provides a method for answering questions based on handwriting trajectory recognition.
  • the present invention encodes the question information, answer information and coordinate information of the answer area through OID and then prints them on the printed matter.
  • the photosensitive module is used to identify the OID code in the printed matter, and the information of the corresponding question and the corresponding answer are obtained. If this product is used to write the answer in the answering area, the coordinate information will also be recognized through the photosensitive module, and the main control module
  • the content of the handwriting is identified through the obtained coordinate information and the time information of the trajectory when writing, and then compared with the answer in the hidden information code to see if it is correct.
  • the process of realizing the recognition of handwriting content is completed by the local recognition algorithm.
  • Implement the present invention namely the stylus with automatic answering function based on handwriting trace recognition, has the following effects: the handwriting trace recognition stylus with automatic answering function can realize handwritten answers and carry out real-time judgment scoring to the answers of multiple test question types, and Record the answering time to make the product use closer to the actual question-making scene, which improves the efficiency of answering questions and the interaction of users.
  • the recognition of handwriting content is directly completed by the local recognition algorithm, which does not require network operation and avoids network delays or server failures. And other problems that lead to identification failure, improve the real-time performance and practicability of the product, and provide convenience for users.
  • Embodiment 1 of the present invention provides a stylus with an automatic answering function, as shown in Figure 1, the stylus with an automatic answering function includes a stylus body 100, and a writing module is arranged in the stylus body 21.
  • the writing module is connected with the main control module for writing in the answer area, and the writing module of the present invention can be a writing pen with writing function;
  • the writing induction acquisition module 20 is connected with the main control module 10, and the writing induction acquisition module 20 is used to acquire the handwriting information of the current answering area; the stylus with automatic answering function in the embodiment of the present invention also has a writing function, The handwriting information of the user in the answer area is acquired by the writing sensing acquisition module for answer comparison.
  • the writing sensing acquisition module of this embodiment may be a writing sensor installed on a stylus with an automatic answering function.
  • the scanning module 30 is connected with the main control module 10, and the scanning module 30 is used to scan and identify the identification code of the current answering area, and obtain the preset coordinate information corresponding to the answering area according to the identification code of the current answering area.
  • the scanning module may be an OID scanner.
  • the main control module 10 is connected with the writing induction acquisition module and the scanning module respectively, and is used to compare and judge the handwriting information with the reference answer information in the current answer area, and output the corresponding judgment result.
  • the main control module may be a main control chip of a stylus with an automatic answering function.
  • the stylus with automatic answering function of the embodiment of the present invention When the stylus with automatic answering function of the embodiment of the present invention is in use, it can answer questions on the preset printed product questions.
  • the answer area is printed with an OID code corresponding to the title information, answer information and coordinate information of the answer area.
  • the stylus of the present invention is used to write and answer questions in the designated answering area, write in the designated answering area through the writing module, and obtain the handwriting information of the current answering area through the writing induction acquisition module; scan and identify the identification of the current answering area through the scanning module code, and obtain preset coordinate information and reference answer information corresponding to the answer area according to the identification code of the current answer area; compare the handwriting information with the reference answer information of the current answer area through the main control module Judgment, output the corresponding judgment result.
  • the stylus with automatic answering function in the embodiment of the present invention not only has the function of a stylus, but also can realize the writing function in the answering area through the writing module 21, and the user's writing track data can be obtained through the writing induction acquisition module 20 , through the main control module 10 to identify whether the writing track in the answer area is consistent with the answer in the answer area, that is, the handwritten answer can be identified and whether the answer is correct or not. That is, the stylus of the present invention can realize the function of pointing and reading, and can also realize writing and identify whether it is correct or not according to the writing, and can automatically correct whether the user's writing answer is correct, which greatly provides convenience for the user.
  • the stylus with automatic answering function described in this embodiment also includes:
  • the prompt module 60 connected with the main control module 10 is used to give corresponding prompts to the judgment result, and the prompts include voice prompts and/or prompt sound prompts;
  • the prompt module in the embodiment of the present invention can be a loudspeaker , when the user writes the answer in the answer area, the voice prompt can be given through the loudspeaker. In order to remind the user to correct the error in time, it provides convenience for the user.
  • the storage module 50 connected with the main control module 10 is used for pre-storing the answer area information for answering the questions one-to-one corresponding to each question to be answered; to pre-store the reference answer information corresponding to the answer area one-to-one; and
  • the answer area corresponding to each answer area information is stored in advance. That is, in the embodiment of the present invention, the reference answer information and coordinate position information of the answer area are stored in advance through the storage module, so as to provide a comparison basis for the user's written answer.
  • the power module connected with the main control module 10 is used to provide working power for the stylus with automatic answering function.
  • the power module in the embodiment of the present invention may include a battery, such as a AAA battery or a rechargeable lithium battery.
  • the stylus with automatic answering function also includes: answering area information, the answer information does not need to be stored in the storage module 50 in advance, it only needs to be hidden in the OID code, and the answering process is dynamically obtained, and the storage module 50 only needs to identify During the OID code process, the dynamically obtained information is saved.
  • the embodiment of the present invention also provides a stylus system with an automatic answering function.
  • the stylus system with an automatic answering function of this embodiment includes the automatic A stylus with answering function, also includes printed matter with answering questions and answering areas;
  • the printed matter is printed with a plurality of question areas and answer areas corresponding to the question areas, and each of the answer areas is printed with a code corresponding to the question information, answer information, and coordinate information of the answer area. OID encoding.
  • the OID code of the unique number is printed on each answering area of the printed product such as the exercise book, and the OID of the OID code is the code of the coding rule of the object identifier (OBJECTIDENTIFIER, OID), and the point reading is OID Code recognition to identify the answer area.
  • OIDIDENTIFIER object identifier
  • OID invisible microelectronic chip technology is to use the combination of light recognition and point-reading pronunciation technology to achieve the effect of fast point-reading and recognition memory.
  • OID optical identification
  • OID code is optical identification code, it currently has more than 60,000 different code values, different code values correspond to different reading content.
  • what the user reads is the text on the printed material, the pattern, the stylus with the automatic answering function, or other content such as numbers, and the internal processing of the stylus with the automatic answering function is like this More than 60,000 different code value.
  • OID has set up the most novel and convenient interface bridge between printed matter and digital system.
  • Each OID code pattern is composed of many subtle and difficult points for human eyes according to specific rules, and corresponds to a set of specific values.
  • the biggest difference from other optical identification codes is that the miniaturized bottom code not only has the characteristics of confidentiality and low visual interference, but also can be hidden under the color pattern of printed matter.
  • the embodiment of the present invention also provides a method for answering questions based on handwritten trajectory recognition, as shown in Figure 2, the embodiment of the present invention provides a method based on handwritten trajectory recognition
  • the answer processing method includes the following steps:
  • Step S101 Presetting the answering areas corresponding to each question to be answered one-to-one; and presetting the reference answer information corresponding to the answering areas one-to-one.
  • the embodiment of the present invention will print a plurality of question information on printed products such as paper that prints question information and answer information during specific implementation, and will set a corresponding answering area for answering questions for each question information, preferably
  • an OID code containing topic information or answer information will be set for each of the answer areas, which is used to identify the coordinate information and reference answer information corresponding to the answer area through the OID code;
  • the OID code also includes the coordinate information of the answering area.
  • pre-set the reference answer information corresponding to the answer area one by one, and store the set reference answer information corresponding to the answer area, for example, it can be stored on the storage module of the stylus with automatic answering function or stored in the cloud It will be all right.
  • Step S100 acquiring handwriting information in the current answer area
  • the writing module when the user uses the answer pen to write the answer information, the writing module writes the answer information, and obtains the handwriting information of the current answer area.
  • the OID code corresponding to the coordinate information of the topic information, answer information and answering area will be printed on the designated answering area of the printed matter;
  • the answer is written in the answer area through the writing module, and the writing sensor module of the stylus with automatic answer function will obtain the handwriting information of the current answer area in real time to identify the user's written answer content in the answer area. And go to step S200.
  • Step S200 scan and identify the identification code of the current answer area, and obtain the preset coordinate information and reference answer information corresponding to the answer area according to the identification code of the current answer area;
  • the user when the user writes the answer information in the answer area, in addition to obtaining the user's writing track information, he will also scan and identify the identification code of the current answer area (such as scanning to identify the OID code of the answer area) by clicking the book, and according to the current answer
  • the area identification code obtains preset coordinate information and reference answer information corresponding to the answer area. It is used for later identification and comparison to check whether the user's written answer is correct.
  • step S200 includes:
  • each question answering area is provided with a unique OID code invisible to the naked eye, and the OID code (identification code) of each answering area corresponds to the corresponding question and is pre-established with the corresponding answer information. association);
  • scan the OID code that identifies the answer area for example, scan the identification code that identifies the current answer area through the photosensitive module of a stylus with an automatic answering function, then decode the identification code, and retrieve the preset corresponding to the identification code.
  • Question type corresponding coordinate information and reference answer information.
  • the current question type is identified as the multiple-choice question shown in the first question in Figure 3, and the preset answer information corresponding to the identification code (OID code) of the question is found. And enter step S300;
  • Step S300 comparing and judging the handwriting information with the reference answer information in the current answer area, and outputting a corresponding judgment result.
  • the handwriting information after obtaining the handwriting information of the answer area and the answer information identified by the identification code of the answer area, the handwriting information will be compared and judged with the reference answer information in the current answer area. Identify whether the trajectory data input by the user's handwriting is correct, and output the corresponding judgment result according to whether it is correct or not.
  • the embodiment of the present invention will compare and judge the handwriting information with the reference answer information in the current answering area, so as to identify the trajectory data that the user has handwritten in the current answering area with a stylus with automatic answering function. Whether it is consistent with the reference answer information in the preset current answer area, output the corresponding judgment result, that is, if it is consistent, output the correct result, if it is inconsistent, it will prompt an error, and record the corresponding answering time.
  • the present invention codes the question information, answer information and coordinate information of the answer area through OID and then prints them in the answer area of the printed matter, and uses the photosensitive module to identify the OID code in the printed matter to obtain the information of the corresponding question and the corresponding answer.
  • Information if you use this product to write answers in the answer area, the coordinate information will also be recognized by the photosensitive module, and the main control module will recognize the content of the handwriting through the acquired coordinate information and the time information of the writing trajectory, and then combine with the hidden information Check whether the answer comparison in the code is correct. The process of realizing the recognition of handwriting content is completed by the local recognition algorithm.
  • the handwriting trace recognition stylus with automatic answering function can realize handwritten answers and carry out real-time judgment scoring to the answers of multiple test question types, and Record the answering time to make the product use closer to the actual question-making scene, which improves the efficiency of answering questions and the interaction of users.
  • the recognition of handwriting content is directly completed by the local recognition algorithm, which does not require networked operations, avoiding network delays or server failures And other problems that lead to identification failure, improve the real-time performance and practicability of the product, and provide convenience for users.
  • the scanning module 30 of the stylus with automatic answering function is an OID scanning module
  • the prompting module 60 is a sounding module
  • the power supply module is a power management module
  • Embodiment 2 of the device of the present invention provides a stylus with an automatic answering function, including:
  • OID scanning module 1 including an OID code scanning camera and an infrared generator.
  • the OID code scanning camera recognizes the OID code through optical sensing and auxiliary infrared generator supplementary light.
  • Writing module 21 the writing module is a custom-made refill for writing answers.
  • Storage module 50 is a storage chip for storing multimedia data or other data, such as audio data, basic product setting parameters, topic information, scoring status, etc.
  • Main control module 10 the main control module 10 is a microcontroller, which is used to store and run programs and control other related modules and equipment.
  • Sound module 5 including a loudspeaker and an audio decoding chip for playing sound.
  • the power management module includes a rechargeable battery and a battery management chip, which are used to supply power to the device and manage charging and discharging of the battery.
  • Fig. 5 is a block diagram of the program implementation of the stylus with automatic answering function of the device embodiment 2 of the present invention. That is, the stylus program implementation with automatic answering function of the device embodiment 2 of the present invention includes the following software function modules:
  • Recognition and analysis unit 7 the recognition and analysis unit is used to identify the data transmitted by the OID scanning module 1 of the hardware and analyze the corresponding content, which includes test question information, answer information, coordinate information, etc.
  • Trajectory recognition unit 8 The trajectory recognition unit is an algorithm for recognizing and analyzing handwriting content, which runs completely locally.
  • Main program unit 9 The main program unit is the core of the whole system, and is used to manage and call each unit of the system. For example, the main program unit calls the timing unit 12 to record each time point of the writing track, and calls the track recognition unit 8 to synthesize the time information and coordinate information to analyze the handwriting content, and then calls the data processing unit 11 to store the data in the storage module 50.
  • Audio processing unit 16 the audio processing unit is used to process audio data, and then make the speaker emit corresponding sounds.
  • Data processing unit 11 the data processing unit is used for memory management and data processing, such as reading and storing audio data, answer data, test question data, score data, etc.
  • Timing unit 12 the timing unit is used to record each time point of the writing track, and the total time from the beginning of answering to the statistical score.
  • Question type recognition unit 13 The question type recognition unit is used to identify the question type, and call the function unit 14 to process the corresponding question.
  • Functional unit 14 The functional unit is used to process different question types. According to the question type given by the question type identification unit 13, the corresponding processing program is started.
  • the question types include single-choice questions, multiple-choice questions, judgment questions, and fill-in-the-blank questions.
  • Call the data processing unit 11 to obtain the answer to the test question and the content of the handwriting, and then compare whether the answer to the test question and the content of the handwriting are equal, store the comparison result in the storage module 50, and call the scoring unit 15 by the main program unit 9 to score the result.
  • Scoring unit 15 The scoring unit scores each question and accumulates them to obtain the total score.
  • a stylus processing method with automatic question answering function based on handwriting trajectory recognition is realized, including step S1, step S2, and step S3 , step S4, step S5, step S6, step S7, step S8, step S9, step S10, step S11.
  • Step S1 click to start answering area.
  • the user turns on the power supply of the handwriting trace recognition stylus with automatic answering function
  • the power management module 6 starts the system, uses the handwriting trace recognition stylus with automatic answering function to click the start answering area, and enters the answering mode.
  • Step S2 timing; the timing unit 12 starts timing, and the sounding module 5 will broadcast a prompt tone S11 at the same time, if the user does not answer the question for a long time, the sounding module 5 will broadcast a prompt tone to remind.
  • Step S3 writing the answer; the user writes the answer in the answering area by using the writing module 2 of the stylus with automatic answering function to recognize the handwriting track.
  • Step S4 scan and decode the OID code; while executing step S3, the OID scanning module 1 will scan and decode the OID code on the printed matter, and identify the topic information, answer information, score information, and writing track coordinate information according to the OID code At the same time, the timing unit 12 will record each time point of the writing track, and the data processing unit 11 will write the track coordinate information, question information, answer information, score information, time information, etc. into the storage module 50 for temporary storage.
  • Step S5 search for the question type; the question type identification unit 13 judges the question type according to the question information, if there is no such question type in the match, an error prompt will be played, and if the match is correct, step S7 will be executed.
  • Step S6 analyzing the handwriting trace; the data processing unit 11 acquires trace coordinate information and corresponding time information from the storage module 50, analyzes and obtains the content of the handwriting, and stores it temporarily.
  • Step S7 start the function module; if the identification result of step S5 is correct, start the function unit 14 to call the corresponding processing program.
  • Step S8 run the corresponding processing program according to the result of step S7, analyze and decode the effective data in the answer information, that is, the answer corresponding to the question type.
  • Step S9 result comparison; data processing unit 11 obtains handwriting content from storage module 50, and compares with the result of step S8, if not equal, then play error prompt tone, and record this title score value, if equal then play correctly Prompt tone, and record the score of this question.
  • Step S10 grading; the scoring unit 15 accumulates the score of each question, and the sound module 5 broadcasts a prompt, as well as the completion time and total score.
  • Step S11 playing audio data or prompt sound; broadcasting audio data or prompt sound through the sound module 5 , controlled by the audio processing unit 16 .
  • an application example of a stylus with an automatic question answering function based on handwriting trajectory recognition is provided.
  • the solid line boxes in the upper right corner and the lower right corner are the functional areas for starting answering questions and scoring scores. Use this product to click to enter the answering mode or start scoring scores.
  • multiple-choice questions such as the second question in Figure 3, use this product to write the correct answer in the dotted line box, such as the capital letter "C", and you will hear a prompt sound for the correct answer after writing. If you write the capital letter "A" or other wrong answers, you will hear the prompt sound of the wrong answer and the correct answer after writing.
  • the answering mode if you do not answer the question within the answering area of the dotted frame, you will hear an error prompt.
  • a prompt will be heard.
  • the stylus with automatic answering function for handwriting recognition can realize handwritten answers and carry out real-time judgment and scoring of answers to multiple test question types, and record
  • the answering time makes the use of the product closer to the actual question-making scene, which improves the efficiency of answering questions, the practicability of the product and the interactivity of users.
  • the present invention also provides another specific application embodiment of an answer processing method based on handwriting trajectory recognition, which is applied to the recognition of handwritten characters, automatic judgment of whether the written answer is correct, and real-time timing and scoring functions
  • the combination forms a stylus with automatic answering function.
  • the present invention encodes the coordinate information of the answer area, the question bank number, test question number, test question type, score, and answer information through OID, and then prints them on the printed matter.
  • OID scanning module will change accordingly, and the microcontroller will record each time point of the writing process at the same time.
  • the traditional stylus with automatic answering function is to print the OID code containing the question information or answer information at a specific position of the printed matter, and click the question and the corresponding answer through the stylus with the automatic answering function to realize the interaction of answering questions, which lacks flexibility. , unable to implement handwritten answers for answering interaction.
  • the coordinate information of the answering area is included in the OID code, and at the same time combined with the coordinate change and time change of the handwriting trajectory, the content of the handwriting is obtained by analyzing the trajectory recognition algorithm.
  • the recognition of the handwriting content is completed locally without connecting to the network.
  • a kind of answer processing method based on handwriting trace recognition of this specific application embodiment comprises the following steps:
  • FIG. 9 it is a schematic diagram of a stylus with an automatic answering function provided by an embodiment of the present disclosure, including a stylus body 100, which also includes:
  • the pen main casing is hollow, and the pen front shell 101 is arranged on the front end of the pen main casing, and the pen rear casing 102 is arranged on the rear end of the pen main casing; the pen main casing
  • the hollow interior of the body can accommodate and install the main control module 10, the storage module 50, the prompt module 60, and the power module 40;
  • the scanning module 30 is arranged on the front end of the stylus body 100, and is used to scan the code points of the answer sheet;
  • the scanning module 30 includes: a high-speed image sensor 31 and an infrared supplementary light 32, the high-speed image sensor 31 and the infrared supplementary light 32 are respectively connected to the main control module 10, and the high-speed image sensor is identified by the infrared supplementary light Hidden information code on the answer sheet.
  • the writing module 21 is arranged at the front end of the stylus body 100 and is used for writing answers;
  • the writing module 21 includes a custom refill 23 and a pressure sensing acquisition module 22;
  • the pressure sensing acquisition module 22 is arranged at the rear end of the pen core 23, and is used to acquire whether the answering pen is in a writing state, and the pressure sensing acquisition module 22 is connected with the main control module 10;
  • the main control module 10 is responsible for managing and controlling the task operation among the various sub-modules, and is arranged in the stylus body 100;
  • the storage module 50 is set in the stylus body 100 and is used to store fonts, handwriting traces, prompt audio data, product basic setting parameters, topic information, score status data, etc.; the storage module 50 and the main Control module 10 is connected;
  • Prompt module 60 is arranged in described stylus body 100, comprises audio frequency decoding chip 61, loudspeaker 62, is used for playing prompt information, answer data, answer achievement etc. by voice template, described loudspeaker 62 and described audio decoding chip 61 connected, the audio decoding chip 61 is connected to the main control module 10;
  • the power supply module 40 is arranged in the stylus body 100 and is used for supplying power to the device and managing charging and discharging of the battery.
  • FIG. 10 is a reference design flowchart of a stylus with automatic answering function based on handwriting trajectory recognition provided by Embodiment 4 of the method of the present invention. That is to provide a reference design process of a stylus with automatic answering function, including the following steps:
  • the bottom code is superimposed on the electronic document, and the electronic document containing the bottom code information is output to the blank paper through a specific printing method to produce a special answer sheet for use with the answering pen;
  • the answering pen can automatically recognize the answer result and judge the correctness of the answer locally according to the handwriting trace without wireless communication;
  • the answering pen grading system can summarize scores locally and give homework grades without wireless communication.
  • an electronic document containing practice questions is produced, at least including the following:
  • the corresponding bottom code laying rules are formulated according to the content of the electronic document, including the following:
  • the customer service personnel will first extract the required information according to the content of the document and create a table for management. For example, it is necessary to record the question bank number or book number, the page number of the current question, the type of the current question, the assigned score of the current question, the answer of the current question, etc. Classify the above information and save it in the bottom code data according to the defined coding position.
  • the bottom code is superimposed on the electronic document according to the laying rules of the bottom code; the electronic document containing the bottom code information is output to a blank paper through a specific printing method, and a special answer sheet for use with the answering pen is produced, including the following :
  • the customer service personnel need to use a customized shop code tool to arrange the bottom code corresponding to the question in the answer area reserved on the electronic document.
  • the conversion of the question information to the bottom code information has been completed, and the bottom code information is for subsequent
  • the answer pen recognizes the answer data and judges the equal score to provide the basis.
  • the electronic document superimposed with the bottom code information needs to be output on blank paper through a specific printing method, in order to obtain a special answer sheet for use with the answering pen.
  • the particularity of this printing method comes from the image recognition system at the front of the answering pen.
  • the image recognition system of this scheme adopts the method of taking pictures by video, combined with the supplementary light of the infrared light in the device, and photographs the bottom code pre-printed on the printed matter.
  • the bottom code is composed of a group of black dots of the same size. The arrangement of these black dots The method will determine the value of the bottom code.
  • the bottom code printing needs to use a special coating that can reflect infrared light, and the printing data other than the bottom code cannot use this special coating, otherwise the bottom code will cause problems in identification.
  • use the answering pen to fill in the answer data in the specified answer area on the answer sheet including the following:
  • the answering pen device includes an image recognition system, a pressure sensing system, etc.
  • the pressure change is obtained through the pressure sensing system of the pen tip, and the image recognition system obtains the starting and ending points of the user's answering track, and at the same time, the pen tip moves
  • the coordinate information hidden in the bottom code information is dynamically obtained.
  • the main controller of the answering pen uses the internal real-time clock generator to assign a corresponding time stamp to each track point. Coordinate information and time information will be recorded in the storage system by the main controller as the basis for subsequent algorithm processing and analysis answers.
  • the answering pen can automatically recognize the answer result and judge the correctness of the answer locally according to the handwriting trace in the above answer data without using wireless communication, including the following:
  • the answering pen device includes a trajectory recognition system.
  • the trajectory recognition unit uses the above-mentioned recorded answer data to write the trajectory coordinates, and combines advanced recognition algorithms to extract feature values, denoise, merge and quantify, and convert them into binary code sequences.
  • the model data is matched by similarity, and the recognition result is output after the matching is successful.
  • the main controller makes a correctness judgment based on the recognition result and the preset answer of the above bottom code.
  • the homework review and scoring system is embedded in the answering pen device, and the work of identifying and judging answer data can be completed without other wireless communication technologies.
  • the wireless communication method here can be Bluetooth, WIFI, or mobile communication network, etc., so as to avoid transmission delay and failure when the wireless communication network is busy, or when the wireless communication connection cannot be realized due to environmental reasons, resulting in the inability to judge in real time Grade question.
  • the answer pen system can judge the correctness of the answer data in two different ways:
  • Method 1 after the completion of the answer to the current question, count down for a short period of time and then give an explanation of the correctness of the current question or only give the correct answer to the wrong question;
  • the answering pen scoring system can locally summarize scores and give homework results without wireless communication, including the following:
  • the bottom code rules laid out above contain the assigned points of the current question.
  • the main controller on the answering pen continuously accumulates the scores through the correctness judgment of the above-mentioned answer data. After all the answers are completed, the homework results are summarized and stored in the storage of the answering pen. In the system, it is convenient for the relevant acceptance personnel to call back the data and check the operation process when necessary. There is no need to connect to wireless communication during the scoring process, which improves the convenience of use.
  • Fig. 11 is a flow chart of handwriting trajectory recognition based on handwriting trajectory recognition with a stylus with automatic question answering function provided by Embodiment 4 of the method of the present invention.
  • the recognition library used only needs to distinguish the following information:
  • the system can further narrow the range of answer choices to improve the success rate of recognition. For example, for multiple-choice questions, only six matching options of ABCDEF are provided; for judgment questions, only special symbols ⁇ and ⁇ are provided. matching options.
  • this embodiment adopts a coding method based on directional quantization trajectory.
  • the writing plane is divided into eight coding directions clockwise, and the included angle of each direction is 45 degrees.
  • numbers 0 to 7 correspond to 8 directions, namely right, lower right, lower, lower left, upper left, upper, upper right.
  • the data collected by the data acquisition system will be superimposed with noise, which is related to everyone's writing habits and writing speed.
  • the limiting average filter is used to remove Random interference error
  • clipped average filter algorithm is a combination of clipped filter method and recursive average filter method.
  • deduplication processing is required, that is, the same direction data is combined to finally generate a series of digital codes, and the analyzed direction data is obtained to achieve the purpose of quantifying and coding the writing trajectory behavior.
  • the present invention also provides a stylus with an automatic question answering function, and its functional block diagram can be shown in FIG. 8 .
  • the stylus with automatic question answering function includes a processor connected through a system bus, a memory, a network interface, a display screen and a loudspeaker.
  • the processor of the smart terminal is used to provide calculation and control capabilities.
  • the memory of the smart terminal includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system and computer programs.
  • the internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium.
  • the network interface of the smart terminal is used to communicate with external terminals through a network connection. When the computer program is executed by the processor, an answer processing method based on handwriting track recognition is realized.
  • the display screen of the smart terminal may be a liquid crystal display screen or an electronic ink display screen.
  • FIG. 8 is only a block diagram of a part of the structure related to the solution of the present invention, and does not constitute a limitation on the smart terminal to which the solution of the present invention is applied.
  • the specific smart terminal More or fewer components than shown in the figures may be included, or certain components may be combined, or have a different arrangement of components.
  • an intelligent terminal including a memory, and one or more programs, wherein one or more programs are stored in the memory, and are configured to be executed by one or more processors.
  • One or more programs contain instructions for:
  • the handwriting information is compared and judged with the reference answer information in the current answer area, and a corresponding judgment result is output.
  • step of obtaining the handwriting information of the current answer area includes:
  • pre-set reference answer information corresponding to the answer area one by one.
  • the step of obtaining the handwriting information of the current answer area also includes:
  • An OID code containing title information or answer information is set for each said answer area, and is used to identify coordinate information and reference answer information corresponding to said answer area by said OID code; each said OID code also includes an answer The coordinate information of the area.
  • the step of obtaining the handwriting information of the current answer area includes:
  • the step of scanning and identifying the identification code of the current answer area, and obtaining the preset coordinate information and reference answer information corresponding to the answer area according to the identification code of the current answer area includes:
  • the photosensitive module scans and identifies the identification code of the current answering area
  • the identification code is decoded, and the pre-set question type corresponding to the identification code, and corresponding coordinate information and reference answer information are retrieved.
  • the step of comparing and judging the handwriting information with the reference answer information in the current answer area, and outputting a corresponding judgment result includes:
  • Nonvolatile memory can include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory.
  • Volatile memory can include random access memory (RAM) or external cache memory.
  • RAM random access memory
  • RAM is available in many forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Chain Synchlink DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.
  • the present invention discloses a method for answering questions based on handwriting trajectory recognition, a stylus with an automatic answering function, a stylus system with an automatic answering function, and an intelligent terminal.
  • the present invention encodes the question information, answer information, and coordinate information of the answer area through OID coding and then prints them in the answer area of the printed matter, and uses a photosensitive module to identify the OID code in the printed matter to obtain the information of the corresponding question and the information of the corresponding answer.
  • This product writes the answer in the answer area, and also recognizes the coordinate information through the photosensitive module, and the main control module recognizes the content of the handwriting through the obtained coordinate information and the time information of the writing trajectory, and then compares it with the answer in the hidden information code Is the comparison correct?
  • the process of realizing the recognition of handwriting content is completed by the local recognition algorithm.
  • Implement the present invention namely the stylus with automatic answering function based on handwriting trace recognition, has the following effects: the handwriting trace recognition stylus with automatic answering function can realize handwritten answers and carry out real-time judgment scoring to the answers of multiple test question types, and Record the answering time to make the product use closer to the actual question-making scene, which improves the efficiency of answering questions and the interaction of users.
  • the recognition of handwriting content is directly completed by the local recognition algorithm, which does not require network operation and avoids network delays or server failures. And other problems that lead to identification failure, improve the real-time performance and practicability of the product, and provide convenience for users.

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Abstract

本发明公开了基于手写轨迹识别的答题处理方法、手写笔、系统及终端，所述方法包括：获取当前答题区域的书写笔迹信息；扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息；将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果。通过本发明不仅可以实现手写笔基本功能，还可以实现手写答案，并对手写答案进行识别，判断该手写答案与对应题目答案是否正确，为用户的使用提供了方便。

Description

基于手写轨迹识别的答题处理方法、手写笔、系统及终端 技术领域
本发明涉及手写笔技术领域，尤其涉及的是一种基于手写轨迹识别的答题处理方法、具有自动答题功能的手写笔、具有自动答题功能的手写笔系统及智能终端。
背景技术
随着科技的发展和人们生活水平的不断提高，各种智能终端如手写笔的使用越来越普及。现有技术中有手写笔一般只具有手写功能，不具有自动答题功能，有时不方便用户使用。
因此，现有技术还有待改进和发展。
发明内容
本发明要解决的技术问题在于，针对现有技术的上述缺陷，提供一种基于手写轨迹识别的答题处理方法、具有自动答题功能的手写笔、具有自动答题功能的手写笔系统及智能终端，通过本发明不仅可以实现手写笔基本功能，还可以实现，手写答案并对手写答案进行识别，判断该手写答案与对应题目答案是否正确，为用户的使用提供了方便，实现了一种智能手写笔功能，为用户的使用提供了方便。
本发明解决问题所采用的技术方案如下：
一种基于手写轨迹识别的答题处理方法，其中，所述方法包括：
获取当前答题区域的书写笔迹信息；
扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息；
将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果。
所述的基于手写轨迹识别的答题处理方法，其中，所述获取当前答题区域的书写笔迹信息的步骤之前包括：
预先设置与各个需答题目一一对应的用于答题的答题区域；
以及预先设置与答题区域一一对应的参考答案信息。
所述的基于手写轨迹识别的答题处理方法，其中，所述获取当前答题区域的书写笔迹信息的步骤之前还包括：
对每个所述答题区域设置包含题目信息或答案信息的OID码，用于通过所述OID码识别与所述答题区域对应的坐标信息及参考答案信息；每个所述OID码中还包含答题区域的坐标信息。
所述的基于手写轨迹识别的答题处理方法，其中，所述获取当前答题区域的书写笔迹信息的步骤包括：
将与题目信息、答案信息及答题区域的坐标信息对应编码的OID编码、印刷在印刷品的指定答题区域；
当接收到点选开始答题区域指令时，获取当前答题区域的书写笔迹信息。
所述的基于手写轨迹识别的答题处理方法，其中，所述扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息的步骤包括：
感光模块扫描识别当前答题区域的识别码；
解码所述识别码，检索预先设置的与所述识别码对应的题目类型、及对应的坐标信息及参考答案信息。
所述的基于手写轨迹识别的答题处理方法，其中，所述将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果的步骤包括：
将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果，并记录答题时间。
一种具有自动答题功能的手写笔，其中，所述具有自动答题功能的手写笔包括：
书写模块，用于在答题区域书写；
书写感应获取模块，用于获取当前答题区域的书写笔迹信息；
扫描模块，用于扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息；
主控模块、分别与所述书写感应获取模块、扫描模块、书写模块连接，用于将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果。
所述的具有自动答题功能的手写笔，其中，其还包括：
与所述主控模块连接的提示模块，用于将所述判断结果进行相应的提示，所述提示包括语音提示和/或提示音提示；
与所述主控模块连接的存储模块，用于预先存储与各个需答题目一一对应的用于答题的答题区域信息；以与预先存储与答题区域一一对应的参考答案信息；以及预先存储与每个答题区域信息对应的答题区域。
与所述主控模块连接的电源模块，用于给具有自动答题功能的手写笔提供工作电源。
所述的具有自动答题功能的手写笔，其还包括：答题区域信息，答案信息不需要预先存储在存储模块，只需要隐藏在OID码内，答题过程动态获取，存储模块只需要在识别OID码过程中将动态获取到的信息保存。
一种具有自动答题功能的手写笔，包括手写笔本体，其中还包括：
呈中空设置的笔主壳体，以及卡合设置在所述笔主壳体前端的笔前壳，以及卡合设置在所述笔主壳体后端的笔后壳；所述笔主壳体的中空内部可容纳安装所述主控模块、存储模块、提示模块、电源模块；
扫描模块，设置在所述手写笔本体前端，用于扫描答题纸的码点；
所述扫描模块包括：高速图像传感器、红外补光灯，所述高速图像传感器、红外补光灯分别与所述主控模块连接，高速图像传感器通过红外补光灯识别铺设在答题纸上的隐藏信息码。
书写模块，设置在所述手写笔本体前端，用于书写答案；
所述书写模块包括定制笔芯、压力感应获取模块；
压力感应获取模块,设置在所述笔芯后端，用于获取答题笔是否处于书写状态，压力感应获取模块与所述主控模块连接；
主控模块，负责管理与控制各个子模块之间的任务运行，设置在所述手写笔本体内；
存储模块，设置在所述手写笔本体内，用于存储字库，手写轨迹，提示音频数据、产品基本设定参数、题目信息、得分状态数据等等；所述存储模块与所述主控模块连接；
提示模块，设置在所述手写笔本体内，包含音频解码芯片、扬声器，用于通过语音模板播放提示信息、答题数据，答题成绩等，所述扬声器与所述音频解码芯片连接，所述音频解码芯片与所述主控模块连接；
电源模块，设置在所述手写笔本体内，用于给设备供电、管理电池的充放电。
该具有自动答题功能的手写笔，其实现方法主要包含：
制作含有练习题目的电子文档；
根据电子文档内容制定对应的底码铺设规则；
根据底码铺设规则电子文档上叠加底码，将含有底码信息的电子文档通过特定的印刷方式输出到空白纸张中，产生配合答题笔使用的专用答题纸；
使用答题笔在答题纸上填写答题数据；
答题笔无需透过无线通信方式就可在本地自动根据手写轨迹识别答题结果并判断答案正确性；
答题笔评分系统无需透过无线通信方式就可在本地汇总得分给出作业成绩。
一种具有自动答题功能的手写笔系统，其中，包括所述的具有自动答题功能的手写笔，以及印刷品；
所述印刷品上印制有多个题目区及与题目区对应的答题区域，每个所述答题区域印制有与题目信息和答案信息及答题区域的坐标信息对应编码的OID编码。
一种智能终端，其中，包括有存储器，以及一个或者一个以上的程序，其中一个或者一个以上程序存储于存储器中，且经配置以由一个或者一个以上处理器执行所述一个或者一个以上程序包含用于执行任意一项所述的方法。
本发明的有益效果：本发明实施例提出了一种基于手写轨迹识别的答题处理方法、具有自动答题功能的手写笔、具有自动答题功能的手写笔系统及智能终端。本发明将题目信息与答案信息及答题区域的坐标信息通过OID编码然后印刷在印刷品的答题区域中，通过感光模块来识别印刷品中的OID码，获取对应题目的信息及相应答案的信息，若使用本产品在答题区域书写答案，也会通过感光模块识别坐标信息，并由主控模块通过获取到的坐标信息和书写时轨迹的时间信息来识别出笔迹的内容，进而与隐藏信息码中的答案比对是否正确。实现识别笔迹内容的过程由本地识别算法完成。实施本发明，即基于手写轨迹识别的具有自动答题功能的手写笔，具有以下效果：手写轨迹识别具有自动答题功能的手写笔可实现手写答案及对多种试题类型的答案进行实时判断评分，并记录答题时间，让产品使用更接近实际的做题场景，提高了答题效率及使用者的互动性，另外笔迹内容的识别直接由本地识别算法完成，不需要联网操作，避免了网络延迟或服务器故障等导致识别失败的问题，提高了产品的实时性及实用性，为用户的使用提供了方便。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明中记载的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明装置实施例1的具有自动答题功能的手写笔功能原理框图。
图2是本发明方法实施例1提供的基于手写轨迹识别的答题处理方法的流程示意图。
图3是本发明具体应用实施例的印制品结构示意图。
图4是为本发明装置实施例2的具有自动答题功能的手写笔功能原理框图。
图5是为本发明装置实施例2的具有自动答题功能的手写笔功能程序实现功能原理框图。
图6是本发明方法实施例2提供的基于手写轨迹识别的答题处理方法的流程示意图。
图7是本发明方法实施例3提供的基于手写轨迹识别的答题处理方法的流程示意图。
图8是本发明实施例提供的智能终端的内部结构原理框图。
图9是本发明装置实施例4的具有自动答题功能的手写笔结构示意图。
图10是本发明方法实施例4提供的基于手写轨迹识别的具有自动答题功能的手写笔的参考设计流程图。
图11是本发明方法实施例4提供的基于手写轨迹识别的具有自动答题功能的手写笔的手写轨迹识别流程图。
具体实施方式
为使本发明的目的、技术方案及优点更加清楚、明确，以下参照附图并举实施例对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
需要说明，若本发明实施例中有涉及方向性指示(诸如上、下、左、右、前、后……)，则该方向性指示仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
随着科技的发展和人们生活水平的不断提高，各种智能终端如手写笔的使用越来越普及。
手写笔是采用国际最新光学图像识别技术和先进的数码语音技术开发而成的新一代智能阅读和学习工具。它体现了电子产品与教育行业的完美融合，实现了科技以人为本的理念。手写笔能同时实现书写、笔记与书法等诸多功能。
当前的点读笔一般通过感光设备来感应印刷品中的隐藏信息码，由主控芯片根据隐藏信息码实现对应信息的播报。其中印刷品中的隐藏信息码一般通过一种叫OID的编码方式编制并印刷在印刷品中，是一种肉眼无法察觉的图形，简称为OID码。一般点读笔与手写笔功能上包括点读、识别对应题目的答案、播报点读笔点住答案的对错。但是现有技术的点读笔与手写笔无法做到点读笔手写答案，并对手写答案进行识别，无法判断该手写答案与对应题目答案是否正确，有时不方便用户使用。
为了解决现有技术的问题，本发明提供一种基于手写轨迹识别的答题处理方法，在发明实施例中，本发明将题目信息与答案信息及答题区域的坐标信息通过OID编码然后印刷在印刷品的答题区域中，通过感光模块来识别印刷品中的OID码，获取对应题目的信息及相应答案的信息，若使用本产品在答题区域书写答案，也会通过感光模块识别坐标信息，并由主控模块通过获取到的坐标信息和书写时轨迹的时间信息来识别出笔迹的内容，进而与隐藏信息码中的答案比对是否正确。实现识别笔迹内容的过程由本地识别算法完成。实施本发明，即基于手写轨迹识别的具有自动答题功能的手写笔，具有以下效果：手写轨迹识别具有自动答题功能的手写笔可实现手写答案及对多种试题类型的答案进行实时判断评分，并记录答题时间，让产品使用更接近实际的做题场景，提高了答题效率及使用者的互动性，另外笔迹内容的识别直接由本地识别算法完成，不需要联网操作，避免了网络延迟或服务器故障等导致识别失败的问题，提高了产品的实时性及实用性，为用户的使用提供了方便。
装置实施例1：
本发明实施例1提供的一种具有自动答题功能的手写笔，如图1所示，所述具有自动答题功能的手写笔包括手写笔本体100，在所 述手写笔本体内设置有：书写模块21、书写感应获取模块20、扫描模块30，主控模块10；
所述书写模块与所述主控模块连接，用于在答题区域书写，本发明所述书写模块可以为具有书写功能的书写笔；
所述书写感应获取模块20与所述主控模块10连接，书写感应获取模块20用于获取当前答题区域的书写笔迹信息；本发明实施例中的具有自动答题功能的手写笔还有书写功能，通过书写感应获取模块获取使用者在答题区域的书写笔迹信息，以用于答案比对，本实施例的书写感应获取模块可以为安装在具有自动答题功能的手写笔上的书写感应器。
所述扫描模块30与所述主控模块10连接，扫描模块30用于扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息；本发明实施例中较佳地所述扫描模块可以为OID扫描器。
主控模块10、分别与所述书写感应获取模块、扫描模块连接，用于将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果。所述主控模块可以为具有自动答题功能的手写笔的主控芯片。
本发明实施例的具有自动答题功能的手写笔在使用时，在预先设置的印制品题目上答题，所述印制品有多个题目区及与题目区对应的答题区域的印刷品，每个所述答题区域印制有与题目信息和答案信息及答题区域的坐标信息对应编码的OID编码。使用时通过本发明的手写笔在指定答题区进行书写答题，通过书写模块在指定答题区书写，通过书写感应获取模块，获取当前答题区域的书写笔迹信息；通过扫描模块扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息；通过所述主控模块将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果。
可见，本发明实施例的具有自动答题功能的手写笔，不仅仅具有手写笔功能，还能实现通过书写模块21在答题区域进行书写功能， 并且通过书写感应获取模块20可以获取使用者书写轨迹数据，通过主控模块10识别在答题区域的书写轨迹是否与该答题区域的答案一致，即可以识别手写答案并判断答案正确与否。即通过本发明的手写笔即可实现点读书功能，还可以实现书写并根据书写识别正确与否，可以自动纠正使用者的写书答案是否正确，为用户的使用大大提供了方便。
进一步地实施例中，如图1所示，本实施例所述的具有自动答题功能的手写笔，其还包括：
与所述主控模块10连接的提示模块60，用于将所述判断结果进行相应的提示，所述提示包括语音提示和/或提示音提示；本发明实施例中所述提示模块可以为喇叭，当使用者在答题区域书写答案与否可以通过喇叭进行语音提示。以及时提醒用户更正错误，为用户的使用提供了方便。
与所述主控模块10连接的存储模块50，用于预先存储与各个需答题目一一对应的用于答题的答题区域信息；以与预先存储与答题区域一一对应的参考答案信息；以及预先存储与每个答题区域信息对应的答题区域。即本发明实施例中通过存储模块预先存储有对应答题区域的参考答案信息及坐标位置信息，以方便对用户的书写答案提供比对基础。
与所述主控模块10连接的电源模块，用于给具有自动答题功能的手写笔提供工作电源。本发明实施例中所述电源模块可以包括电池，例如7号电池或可充电的锂电池等。
在另一种实施方式中，可以做如下替换：
所述的具有自动答题功能的手写笔，其还包括：答题区域信息，答案信息不需要预先存储在存储模块50，只需要隐藏在OID码内，答题过程动态获取，存储模块50只需要在识别OID码过程中将动态获取到的信息保存。
基于上述实施例的点写笔，本发明实施例还提供了一种具有自动答题功能的手写笔系统，本实施例的具有自动答题功能的手写笔 系统包括上述图1实施例所述的具有自动答题功能的手写笔，还包括印制有答题题目和答题区域的印刷品；
本发明实施例中，所述印刷品上印制有多个题目区及与题目区对应的答题区域，每个所述答题区域印制有与题目信息和答案信息及答题区域的坐标信息对应编码的OID编码。
本发明实施例中在印制品例如练习册的每个答题区都印制有唯一号的OID编码，OID编码的OID为对象标识符(OBJECTIDENTIFIER,OID)的编码规则的编码，点读书采为OID码识识别答题区域。
OID隐形微电子芯片技术，就是利用光识别与点读发音技术结合，达到快速点读，识别记忆的效果。OID(optica1Identify),光学辨别，OID编码就是光学辨别编码，目前它有6万多个不同的码值，不同的码值对应不同的点读内容。一般来说，使用者点读的是印刷材料上的文字，图案，具有自动答题功能的手写笔，或者数字等其他内容，而具有自动答题功能的手写笔内部处理的就是这样6万多个不同的码值。为此，OID搭起了印刷物与数字系统之间最新颖便捷的接口桥梁。每个OID编码图形均是由许多细微而人眼难办的点依特定规则所组成，并对应到一组特定数值。与其他光学辨识码最大的不同特点就是微小化的底码不仅具有保密与低视觉干扰的特性，更能隐藏在印刷品的彩色图案之下。
方法实施例1
基于上述具有自动答题功能的手写笔的实施例，本发明实施例还提供了一种基于手写轨迹识别的答题处理方法，如图2中所示，本发明实施例提供一种基于手写轨迹识别的答题处理方法，包括如下步骤：
步骤S101：预先设置与各个需答题目一一对应的用于答题的答题区域；以及预先设置与答题区域一一对应的参考答案信息。
本发明方法实施例在具体实施前需要，预先设置与各个需答题目一一对应的用于答题的答题区域；以及预先设置与答题区域一一对应的参考答案信息。即本发明实施例在具体实施时会在印制题目 信息和答题信息的印制品如纸张上印制多个题目信息，并会对每个题目信息设置对应的用于答题的答题区域，较佳地实施例中，会对对每个所述答题区域设置包含题目信息或答案信息的OID码，用于通过所述OID码识别与所述答题区域对应的坐标信息及参考答案信息；每个所述OID码中还包含答题区域的坐标信息。并以及预先设置与答题区域一一对应的参考答案信息，并将设置的与答题区域一一对应的参考答案信息存储，例如可以存储在具有自动答题功能的手写笔的存储模块上或存储在云端都可以。
步骤S100、获取当前答题区域的书写笔迹信息；
本发明实施例中，当用户使用答题笔书写答题信息时，通过书写模块书写答题信息，并会获取当前答题区域的书写笔迹信息。
本发明具体实施时，会将与题目信息、答案信息及答题区域的坐标信息对应编码的OID编码、印刷在印刷品的指定答题区域；当使用者在答题区域答题时，当接收到点选开始答题区域指令时，通过书写模块在答题区域书写答案，具有自动答题功能的手写笔的书写感应模块会实时获取当前答题区域的书写笔迹信息，以识别用户在对应答题区域的书写答案内容。并进入步骤S200。
步骤S200、扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息；
本步骤中，当用户在答题区域书写答题信息时，除了获取用户的书写轨迹信息，还会通过点读书扫描识别当前答题区域的识别码(例如扫描识别答题区域的OID码)，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息。以用于后面识别比对用户书写答案是否正确。
具体地，步骤S200包括：
如图3所示，每个题目答题区域的虚线框设置有唯一的肉眼不可见的OID码，每个答题区域的OID码(识别码)与对应的题目对应并与对应的答案信息预先建立有关联)；
使用时，扫描识别答题区域的OID码，例如通过具有自动答题功能的手写笔的感光模块扫描识别当前答题区域的识别码，然后解码所述识别码，检索预先设置的与所述识别码对应的题目类型、及对应的坐标信息及参考答案信息。例如根据当前答题区域的OID码识别当前的题目类型为图3第1题所示的单选题，查找到预先设置的与该题的识别码(OID码)对应的答案信息。并进入步骤S300；
步骤S300、将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果。
本发明实施例中当获取到对应答题区域的书写笔迹信息，及通过答题区域的识别码识别出的答案信息后，会将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，以识别出用户手写输入的轨迹数据是否正确，根据正确以否输出对应的判断结果。
在一种实施方式中，本发明实施例会将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，以识别出用户通过具有自动答题功能的手写笔在当前答题区域手写输入的轨迹数据是否与预先设置的当前答题区域的参考答案信息对比一致，输出对应的判断结果，即如果一致输出正确结果，如果不一致提示错误，并记录对应的答题时间。
由上可见，本发明将题目信息与答案信息及答题区域的坐标信息通过OID编码然后印刷在印刷品的答题区域中，通过感光模块来识别印刷品中的OID码，获取对应题目的信息及相应答案的信息，若使用本产品在答题区域书写答案，也会通过感光模块识别坐标信息，并由主控模块通过获取到的坐标信息和书写时轨迹的时间信息来识别出笔迹的内容，进而与隐藏信息码中的答案比对是否正确。实现识别笔迹内容的过程由本地识别算法完成。实施本发明，即基于手写轨迹识别的具有自动答题功能的手写笔，具有以下效果：手写轨迹识别具有自动答题功能的手写笔可实现手写答案及对多种试题类型的答案进行实时判断评分，并记录答题时间，让产品使用更接近实际的做题场景，提高了答题效率及使用者的互动性，另外笔迹内容的识别直接由本地识别算法完成，不需要联网操作，避免了 网络延迟或服务器故障等导致识别失败的问题，提高了产品的实时性及实用性，为用户的使用提供了方便。
装置实施例2：
当所述具有自动答题功能的手写笔的扫描模块30为OID扫描模块，提示模块60为发声模块，电源模块为电源管理模块时；
如图4中所示，本发明装置实施例2提供一种具有自动答题功能的手写笔，包括：
OID扫描模块1：包括OID码扫描摄像头、红外发生器，OID码扫描摄像头通过光学感应、辅助红外发生器补光识别OID码。
书写模块21：书写模块为定制笔芯，用于书写答案。
存储模块50：存储模块50为存储芯片，用于存储多媒体数据或其他数据，如音频数据、产品基本设定参数、题目信息、得分状态等。
主控模块10：主控模块10为微控制器，用于存放并运行程序，控制其他相关模块及设备。
发声模块5：包括扬声器、音频解码芯片，用于播放声音。
电源管理模块6：电源管理模块包括可充电电池、电池管理芯片，用于给设备供电、管理电池的充放电。
如图5所示，图5为本发明装置实施例2的具有自动答题功能的手写笔的程序实现方框图。即本发明装置实施例2的具有自动答题功能的手写笔程序实现包括如下软件功能模块：
识别解析单元7：识别解析单元用于识别硬件的OID扫描模块1传输出来的数据并解析出相应的内容，内容包括试题信息、答案信息、坐标信息等。
轨迹识别单元8：轨迹识别单元是对笔迹内容的识别与解析的算法，完全在本地运行。
主程序单元9：主程序单元是整个系统的核心，用于对系统的各个单元进行管理与调用。例如主程序单元调用计时单元12记录书写轨迹的各个时间点，并调用轨迹识别单元8综合时间信息与坐标 信息，解析出笔迹内容，进而调用数据处理单元11将数据存入存储模块50。
音频处理单元16：音频处理单元用于对音频数据进行处理，进而使扬声器发出对应的声音。
数据处理单元11：数据处理单元用于对内存进行管理及数据处理，例如对音频数据、答案数据、试题数据、得分数据等的读取与存储。
计时单元12：计时单元用于记录书写轨迹的各个时间点，以及从开始答题到统计得分的总时间。
题型识别单元13：题型识别单元用于识别题目类型，并调用功能单元14处理相应的题目。
功能单元14：功能单元用于处理不同的题型，根据题型识别单元13给出的题目类型，启动相应处理程序，题型包括单选题、多选题、判断题、填空题，处理程序调用数据处理单元11获取试题答案与笔迹内容，进而比对试题答案与笔迹内容是否相等，将比对结果存入存储模块50，由主程序单元9调用评分单元15对结果进行计分。
评分单元15：评分单元对每道题进行计分并累加，统计得出总分。
本发明装置实施例2的具有自动答题功能的手写笔在具体使用时，如图6所示，实现基于手写轨迹识别的具有自动答题功能的手写笔处理方法，包括步骤S1，步骤S2，步骤S3，步骤S4、步骤S5、步骤S6、步骤S7、步骤S8、步骤S9、步骤S10、步骤S11。
步骤S1、点选开始答题区域。在步骤S1中，用户打开手写轨迹识别具有自动答题功能的手写笔电源，由电源管理模块6启动系统，使用手写轨迹识别具有自动答题功能的手写笔点选开始答题区域，进入答题模式。
步骤S2，计时；计时单元12开始计时，同时发声模块5会播报提示音S11，若用户长时间没有答题，发声模块5会播报提示音提醒。
步骤S3，书写答案；用户使用手写轨迹识别具有自动答题功能的手写笔的书写模块2在答题区域书写答案。
步骤S4，扫描解码OID码；在执行步骤S3的同时，OID扫描模块1会进行扫描并解码印刷体上的OID码，根据OID码识别出题目信息、答案信息、分值信息、书写轨迹坐标信息，同时计时单元12会记录书写轨迹的各个时间点，由数据处理单元11将轨迹坐标信息、题目信息、答案信息、分值信息、时间信息等写入存储模块50，暂时存储。
步骤S5，检索题型；由题型识别单元13根据题目信息判断题目类型，若匹配无此题型则播报错误提示音，若匹配正确则执行步骤S7。
步骤S6，分析手写轨迹；数据处理单元11从存储模块50中获取轨迹坐标信息及相应的时间信息，并分析得出笔迹的内容，暂时存储。
步骤S7，启动功能模块；若步骤S5识别结果正确则启动功能单元14来调用相应的处理程序。
步骤S8，根据步骤S7的结果运行相应的处理程序，分析解码出答案信息中的有效数据，即对应题型的答案。
步骤S9，结果比对；数据处理单元11从存储模块50获取笔迹内容，并与步骤S8的结果进行比对，若不相等，则播放错误提示音，并记录本题分值，若相等则播放正确提示音，并记录本题分值。
步骤S10，评分；由评分单元15累加每道题的分值，通过发声模块5播报提示音，以及完成的时间和总分。
步骤S11，播放音频数据或提示音；通过发声模块5播报音频数据或提示音，由音频处理单元16控制。
在一个应用实施例中，如图3所示，提供了一种基于手写轨迹识别的具有自动答题功能的手写笔的应用示例。在应用示例中，右上角与右下角的实线框内是开始答题与统计得分的功能区域，使用本产品点击即可进入答题模式或开始统计得分。在单选题中，例如图3中的第2题，在虚线框内使用本产品书写正确答案，如大写字 母“C”，书写完后会听到回答正确的提示音。若书写大写字母“A”或是其他错误答案，书写完后会听到回答错误的提示音以及正确的答案。当在答题模式下，不在虚线框的答题区域内答题，会听到错误提示音。当在答题模式下，若长时间没有答题会听到提示音。
实施本发明的基于手写轨迹识别的具有自动答题功能的手写笔方案，具有以下效果：手写识别具有自动答题功能的手写笔可实现手写答案及对多种试题类型的答案进行实时判断评分，并记录答题时间，让产品使用更接近实际的做题场景，提高了答题效率、产品的实用性及使用者的互动性。
在另一种实施方式中，可以做如下替换：
a.将发声模块变为无线显示模块，来与用户互动，其他不变。
b.将笔迹内容识别的方法改为OCR，即通过摄像头检测书写区域的暗、亮的模式确定其形状，然后用字符识别方法将形状翻译成计算机文字，其他不变。
c.将在本地的笔迹内容识别方法改为联网的笔迹内容识别方法，即由摄像头获得书写内容的图片，通过网络传输到服务器，由服务器相应的程序完成笔迹内容识别，其他不变。
d.将用发声模块与用户互动的方式变为使用无线连接手机等智能终端设备来交互，其他不变。
基于上述实施例，如图7所示，本发明还提供了另一具体应用实施例的基于手写轨迹识别的答题处理方法，应用于手写体的识别、自动判断书写答案是否正确及实时计时计分功能的组合形成具有自动答题功能的手写笔。相较于现有技术，本发明通过把答题区域的坐标信息，题目的题库编号、试题号、试题类型、分值、答案信息通过OID编码，接着印刷在印刷品上，当用户使用本产品在答题区域书写时，OID扫描模块识别到的坐标信息会随之变化，微控制器同时记录书写过程的各个时间点，通过这些坐标信息与对应的时间信息，进而由轨迹识别算法分析得出笔迹的内容。传统的具有自动答题功能的手写笔是在印刷品的特定位置印刷包含题目信息或答案信息的OID码，并通过具有自动答题功能的手写笔点击题目与相应 的答案来实现答题的互动，缺乏灵活性，无法实现手写答案来进行答题互动。
在OID码中包含答题区域的坐标信息，同时结合手写轨迹的坐标变化与时间变化，由轨迹识别算法分析得出笔迹的内容。本实施例完全在本地完成笔迹内容的识别，无需连接网络。
如图7所示，本具体应用实施例的一种基于手写轨迹识别的答题处理方法：包括以下步骤：
S12、点选开始答题区域启动答题模式。
S13、使用本产品在答题区域书写答案。
S14、答案正确则播报正确提示音，答案错误则播报错误提示音及正确答案。
S15、判断是否完成所有题目，若还有题目未完成则执行S16，若完成所有题目则执行S17。
S16、还有题目未完成，播报相应提示音。
S17、完成了所有题目，播报相应提示音。
S18、点选统计得分区域，播报总分及时间等信息，退出答题模式，结束答题。
装置实施例4：
参见附图9，为本公开实施例提供的一种具有自动答题功能的手写笔示意图，包括手写笔本体100，其中还包括：
呈中空设置的笔主壳体，以及卡合设置在所述笔主壳体前端的笔前壳101，以及卡合设置在所述笔主壳体后端的笔后壳102；所述笔主壳体的中空内部可容纳安装所述主控模块10、存储模块50、提示模块60、电源模块40；
扫描模块30，设置在所述手写笔本体100前端，用于扫描答题纸的码点；
所述扫描模块30包括：高速图像传感器31、红外补光灯32，所述高速图像传感器31、红外补光灯32分别与所述主控模块10连接，高速图像传感器通过红外补光灯识别铺设在答题纸上的隐藏信息码。
书写模块21，设置在所述手写笔本体100前端，用于书写答案；
所述书写模块21包括定制笔芯23、压力感应获取模块22；
压力感应获取模块22,设置在所述笔芯23后端，用于获取答题笔是否处于书写状态，压力感应获取模块22与所述主控模块10连接；
主控模块10，负责管理与控制各个子模块之间的任务运行，设置在所述手写笔本体100内；
存储模块50，设置在所述手写笔本体100内，用于存储字库，手写轨迹，提示音频数据、产品基本设定参数、题目信息、得分状态数据等等；所述存储模块50与所述主控模块10连接；
提示模块60，设置在所述手写笔本体100内，包含音频解码芯片61、扬声器62，用于通过语音模板播放提示信息、答题数据，答题成绩等，所述扬声器62与所述音频解码芯片61连接，所述音频解码芯片61与所述主控模块10连接；
电源模块40，设置在所述手写笔本体100内，用于给设备供电、管理电池的充放电。
如图10所示，图10为本发明方法实施例4提供的基于手写轨迹识别的具有自动答题功能的手写笔的参考设计流程图。即提供具有自动答题功能的手写笔的参考设计流程，包括以下步骤：
制作含有练习题目的电子文档；
根据电子文档内容制定对应的底码铺设规则；
根据底码铺设规则电子文档上叠加底码，将含有底码信息的电子文档通过特定的印刷方式输出到空白纸张中，产生配合答题笔使用的专用答题纸；
使用答题笔在答题纸上填写答题数据；
答题笔无需透过无线通信方式就可在本地自动根据手写轨迹识别答题结果并判断答案正确性；
答题笔评分系统无需透过无线通信方式就可在本地汇总得分给出作业成绩。
在本实施例中，制作含有练习题目的电子文档，至少包括以下：
教师制作含有测试题目的考试试卷的电子文档；
出版社制作含有练习题目的书籍的电子文档；
其他具有专业培训资质的教育机构制作含有练习题目的电子文档。
在本实施例中，根据电子文档内容制定对应的底码铺设规则，包括以下：
电子文档制作完成后，由客服人员先根据文档内容提取出需要的信息并建表管理，例如需要记录题库编号或书号，当前题目页码，当前题目类型，当前题目分配分值，当前题目答案等，将以上信息分类并按照定义好的编码位置保存在底码数据中。
在本实施例中，根据底码铺设规则在电子文档上叠加底码；将含有底码信息的电子文档通过特定的印刷方式输出到空白纸张中，产生配合答题笔使用的专用答题纸，包括以下：
客服人员需要使用定制的铺码工具，在电子文档上预留的答题区域布置对应该题目相应的底码，在上述内容中已经完成了对题目信息到底码信息的转换，底码信息为后续的答题笔识别答题数据和评判等分提供了依据.
叠加了底码信息之后的电子文档，需要通过特定的印刷方式输出到空白纸张中，才能获得配合答题笔使用的专用答题纸。这种印刷方式的特殊性来源于答题笔前端的图像识别系统。本方案的图像识别系统是采用影像拍照的方式，结合装置中的红外灯补光，拍摄预先印刷在印刷品上的底码，底码是由一组大小相同的黑点组成，这些黑点的排列方式会决定底码的数值。底码印刷需要使用能反射红外光的特殊涂料，而底码之外的印刷数据则不能使用该特殊涂料，否则会让底码识别出问题。
在本实施例中，使用答题笔在上述答题纸中指定答题区域填写答题数据，包括以下：
答题笔装置上包含有图像识别系统、压力感应系统等，用户答题时，通过笔尖的压力感应系统获取压力变化，图像识别系统获取用户答题轨迹的起始和结束点，同时会在笔尖移动过程中动态获取 到底码信息中隐藏的坐标信息，另一方面答题笔的主控制器利用内部的实时时钟发生器，给每一个轨迹点赋予相应的时间戳。坐标信息和时间信息都会被主控制器记录在存储系统中，作为后续算法处理分析答案的依据。
在本实施例中，答题笔无需透过无线通信方式就可在本地自动根据上述的答题数据中手写轨迹识别答题结果并判断答案正确性，包括以下：
答题笔装置上包含有轨迹识别系统，轨迹识别单元利用上述记录的答题数据书写轨迹坐标，结合先进的识别算法提取特征值、去噪、合并和量化等手段，转换成二进制编码序列，再与字库模型数据做相似度匹配，匹配成功后输出识别结果，主控制器根据识别结果再与上述底码的预设答案做正确性判断。
本发明公开的答题笔及其实现方法，其作业审查和评分系统内嵌在答题笔装置中，无需通过其他无线通信技术就能完成答题数据识别和判断的工作。这里的无线通信方式，可以是蓝牙、WIFI、或者移动通信网络等，这样就避免无线通信网络繁忙时出现传输延迟、失败，或者因为环境的原因无法实现无线通信连接的情况下，导致无法实时评判成绩的问题。
答题笔系统对答题数据的正确性判断，可以有两种不同的实现方式：
方式1，当前题目答题完成后倒计时一小段时间后给出当前题目的正确性说明或仅给出错题的正确答案；
方式2，当前题目答题完成后不提示正确性，等待所有题目答题完成后再汇总后给出全部答案或仅给出错题的正确答案。
在本实施例中，由答题笔评分系统无需透过无线通信方式就可在本地汇总得分给出作业成绩，包括以下：
上述铺设的底码规则中含有当前题目的分配分值，答题笔上的主控制器通过上述的答题数据正确性判断不断累加得分，当所有答题结束后汇总作业成绩，并保存在答题笔的存储系统中，方便相关 验收人员有需要时回调数据，查阅作业过程。评分过程中没有连接无线通信的需求，提高了使用的便利性。
参见附图11，图11是本发明方法实施例4提供的基于手写轨迹识别的具有自动答题功能的手写笔的手写轨迹识别流程图。
由于本实施例提供答案的特殊性，用到的识别库只需要分辨如下信息：
26个英文大写字母；
26个英文小写字母；
数字0～9；
特殊符号√和×；
更进一步的，根据题目类型，系统可以更进一步缩小答案的选择范围来提高识别成功率，例如，对于选择题，只提供ABCDEF六种匹配选项；对于判断题，只提供特殊符号√和×两种匹配选项。
基于以上设计说明，本实施例采用的是一种根据方向性量化轨迹编码的方式，根据字符的笔画趋势，顺时针将书写平面等分为八个方向编码，每个方向夹角为45度，例如数字0～7分别对应为右、右下、下，左下、左上、上、右上等8个方向。
根据两点成一线的原理，我们先设定每次采样点之间的间距，利用答题纸上标识的XY坐标位置和书写时产生的时间戳提取出书写笔画的二进制方向变化编码序列。例如，大写字母B我们可以编码成26012340234。
由于数据采集系统采集到的数据一般而言均会叠加噪声，这和每个人的书写习惯和书写速度有关系，为了进一步消除或者说减小随机及周期性误差的干扰，采用限幅平均滤波去除随机干扰误差，限幅平均滤波算法是限幅滤波法与递推平均滤波法的结合体，每次采样到的新数据先进行限幅处理，再送入队列进行递推平均滤波处理，其融合了两种滤波算法的优点并克服两种算法的缺点，对于偶然出现的脉冲性干扰，可消除由于脉冲干扰所引起的采样值偏差。对于周期性干扰也有良好的抑制作用，并且能够提升数据的平滑度以及满足对于测量速度的要求.
去噪完成后需要进行去重处理，也就是把相同的方向数据合并，最终产生一串数字编码，获得解析出来的方向数据，实现将书写轨迹行为量化编码的目的。
量化编码之后，将该编码和已经定义好的字库数据进行匹配比较。最终会得出一个相似率。如果相似率超过一定百分比，系统会将对应字库数据的索引值返回作为书写识别结果。
将识别结果与底码信息中的预设答案(在字库中的索引值)进行比对，完成自动批改的工作。
基于上述实施例，本发明还提供了一种具有自动答题功能的手写笔，其原理框图可以如图8所示。该具有自动答题功能的手写笔包括通过系统总线连接的处理器、存储器、网络接口、显示屏、喇叭。其中，该智能终端的处理器用于提供计算和控制能力。该智能终端的存储器包括非易失性存储介质、内存储器。该非易失性存储介质存储有操作系统和计算机程序。该内存储器为非易失性存储介质中的操作系统和计算机程序的运行提供环境。该智能终端的网络接口用于与外部的终端通过网络连接通信。该计算机程序被处理器执行时以实现一种基于手写轨迹识别的答题处理方法。该智能终端的显示屏可以是液晶显示屏或者电子墨水显示屏。
本领域技术人员可以理解，图8中示出的原理框图，仅仅是与本发明方案相关的部分结构的框图，并不构成对本发明方案所应用于其上的智能终端的限定，具体的智能终端可以包括比图中所示更多或更少的部件，或者组合某些部件，或者具有不同的部件布置。
在一个实施例中，提供了一种智能终端，包括有存储器，以及一个或者一个以上的程序，其中一个或者一个以上程序存储于存储器中，且经配置以由一个或者一个以上处理器执行所述一个或者一个以上程序包含用于进行以下操作的指令：
获取当前答题区域的书写笔迹信息；
扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息；
将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果。
其中，所述获取当前答题区域的书写笔迹信息的步骤之前包括：
预先设置与各个需答题目一一对应的用于答题的答题区域；
以及预先设置与答题区域一一对应的参考答案信息。
其中，所述获取当前答题区域的书写笔迹信息的步骤之前还包括：
对每个所述答题区域设置包含题目信息或答案信息的OID码，用于通过所述OID码识别与所述答题区域对应的坐标信息及参考答案信息；每个所述OID码中还包含答题区域的坐标信息。
其中，所述获取当前答题区域的书写笔迹信息的步骤包括：
将与题目信息、答案信息及答题区域的坐标信息对应编码的OID编码、印刷在印刷品的指定答题区域；
当接收到点选开始答题区域指令时，获取当前答题区域的书写笔迹信息。
其中，所述扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息的步骤包括：
感光模块扫描识别当前答题区域的识别码；
解码所述识别码，检索预先设置的与所述识别码对应的题目类型、及对应的坐标信息及参考答案信息。
其中，所述将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果的步骤包括：
将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果，并记录答题时间。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的计算机程序可存储于一非易失性计算机可读取存储介质中，该计算机程序在执行时，可包括如上述各方法的实施例的流程。其中，本发明所提供的各实施例中所使用的对存储器、存储、数据库或其 它介质的任何引用，均可包括非易失性和/或易失性存储器。非易失性存储器可包括只读存储器(ROM)、可编程ROM(PROM)、电可编程ROM(EPROM)、电可擦除可编程ROM(EEPROM)或闪存。易失性存储器可包括随机存取存储器(RAM)或者外部高速缓冲存储器。作为说明而非局限，RAM以多种形式可得，诸如静态RAM(SRAM)、动态RAM(DRAM)、同步DRAM(SDRAM)、双数据率SDRAM(DDRSDRAM)、增强型SDRAM(ESDRAM)、同步链路(Synchlink)DRAM(SLDRAM)、存储器总线(Rambus)直接RAM(RDRAM)、直接存储器总线动态RAM(DRDRAM)、以及存储器总线动态RAM(RDRAM)等。
综上所述，本发明公开了一种基于手写轨迹识别的答题处理方法、具有自动答题功能的手写笔、具有自动答题功能的手写笔系统及智能终端。本发明将题目信息与答案信息及答题区域的坐标信息通过OID编码然后印刷在印刷品的答题区域中，通过感光模块来识别印刷品中的OID码，获取对应题目的信息及相应答案的信息，若使用本产品在答题区域书写答案，也会通过感光模块识别坐标信息，并由主控模块通过获取到的坐标信息和书写时轨迹的时间信息来识别出笔迹的内容，进而与隐藏信息码中的答案比对是否正确。实现识别笔迹内容的过程由本地识别算法完成。实施本发明，即基于手写轨迹识别的具有自动答题功能的手写笔，具有以下效果：手写轨迹识别具有自动答题功能的手写笔可实现手写答案及对多种试题类型的答案进行实时判断评分，并记录答题时间，让产品使用更接近实际的做题场景，提高了答题效率及使用者的互动性，另外笔迹内容的识别直接由本地识别算法完成，不需要联网操作，避免了网络延迟或服务器故障等导致识别失败的问题，提高了产品的实时性及实用性，为用户的使用提供了方便。
应当理解的是，本发明的应用不限于上述的举例，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (13)

  1. 一种基于手写轨迹识别的答题处理方法，其特征在于，所述方法包括：
    获取当前答题区域的书写笔迹信息；
    扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息；
    将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果。
  2. 根据权利要求1所述的基于手写轨迹识别的答题处理方法，其特征在于，所述获取当前答题区域的书写笔迹信息的步骤之前包括：
    预先设置与各个需答题目一一对应的用于答题的答题区域；
    以及预先设置与答题区域一一对应的参考答案信息。
  3. 根据权利要求1所述的基于手写轨迹识别的答题处理方法，其特征在于，所述获取当前答题区域的书写笔迹信息的步骤之前还包括：
    对每个所述答题区域设置包含题目信息或答案信息的OID码，用于通过所述OID码识别与所述答题区域对应的坐标信息及参考答案信息；每个所述OID码中还包含答题区域的坐标信息。
  4. 根据权利要求1所述的基于手写轨迹识别的答题处理方法，其特征在于，所述获取当前答题区域的书写笔迹信息的步骤包括：
    将与题目信息、答案信息及答题区域的坐标信息对应编码的OID编码、印刷在印刷品的指定答题区域；
    当接收到点选开始答题区域指令时，获取当前答题区域的书写笔迹信息。
  5. 根据权利要求1所述的基于手写轨迹识别的答题处理方法，其特征在于，所述扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息的步骤包括：
    感光模块扫描识别当前答题区域的识别码；
    解码所述识别码，检索预先设置的与所述识别码对应的题目类型、及对应的坐标信息及参考答案信息。
  6. 根据权利要求1所述的基于手写轨迹识别的答题处理方法，其特征在于，所述将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果的步骤包括：
    将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果，并记录答题时间。
  7. 一种具有自动答题功能的手写笔，其特征在于，所述具有自动答题功能的手写笔包括：
    书写模块，用于在答题区域书写；
    书写感应获取模块，用于获取当前答题区域的书写笔迹信息；
    扫描模块，用于扫描识别当前答题区域的识别码，并根据当前答题区域的识别码获取预先设置的与所述答题区域对应的坐标信息及参考答案信息；
    主控模块、分别与所述书写感应获取模块、扫描模块、书写模块连接，用于将所述书写笔迹信息与当前答题区域的参考答案信息进行对比判断，输出对应的判断结果。
  8. 根据权利要求7所述的具有自动答题功能的手写笔，其特征在于，其还包括：
    与所述主控模块连接的提示模块，用于将所述判断结果进行相应的提示，所述提示包括语音提示和/或提示音提示；
    与所述主控模块连接的存储模块，用于预先存储与各个需答题目一一对应的用于答题的答题区域信息；以与预先存储与答题区域一一对应的参考答案信息；以及预先存储与每个答题区域信息对应的答题区域；
    与所述主控模块连接的电源模块，用于给具有自动答题功能的手写笔提供工作电源。
  9. 根据权利要求7所述的具有自动答题功能的手写笔，其特征在于，其还包括：答题区域信息，答案信息不需要预先存储在存储 模块，只需要隐藏在OID码内，答题过程动态获取，存储模块只需要在识别OID码过程中将动态获取到的信息保存。
  10. 一种具有自动答题功能的手写笔，其特征在于，包括手写笔本体，其中还包括：
    呈中空设置的笔主壳体，以及卡合设置在所述笔主壳体前端的笔前壳，以及卡合设置在所述笔主壳体后端的笔后壳；所述笔主壳体的中空内部可容纳安装所述主控模块、存储模块、提示模块、电源模块；
    扫描模块，设置在所述手写笔本体前端，用于扫描答题纸的码点；
    所述扫描模块包括：高速图像传感器、红外补光灯，所述高速图像传感器、红外补光灯分别与所述主控模块连接，高速图像传感器通过红外补光灯识别铺设在答题纸上的隐藏信息码。
    书写模块，设置在所述手写笔本体前端，用于书写答案；
    所述书写模块包括定制笔芯、压力感应获取模块；
    压力感应获取模块,设置在所述笔芯后端，用于获取答题笔是否处于书写状态，压力感应获取模块与所述主控模块连接；
    主控模块，负责管理与控制各个子模块之间的任务运行，设置在所述手写笔本体内；
    存储模块，设置在所述手写笔本体内，用于存储字库，手写轨迹，提示音频数据、产品基本设定参数、题目信息、得分状态数据等等；所述存储模块与所述主控模块连接；
    提示模块，设置在所述手写笔本体内，包含音频解码芯片、扬声器，用于通过语音模板播放提示信息、答题数据，答题成绩等，所述扬声器与所述音频解码芯片连接，所述音频解码芯片与所述主控模块连接；
    电源模块，设置在所述手写笔本体内，用于给设备供电、管理电池的充放电。
  11. 根据权利要求10所述的具有自动答题功能的手写笔，其特征在于，其实现方法主要包含：
    制作含有练习题目的电子文档；
    根据电子文档内容制定对应的底码铺设规则；
    根据底码铺设规则电子文档上叠加底码，将含有底码信息的电子文档通过特定的印刷方式输出到空白纸张中，产生配合答题笔使用的专用答题纸；
    使用答题笔在答题纸上填写答题数据；
    答题笔无需透过无线通信方式就可在本地自动根据手写轨迹识别答题结果并判断答案正确性；
    答题笔评分系统无需透过无线通信方式就可在本地汇总得分给出作业成绩。
  12. 一种具有自动答题功能的手写笔系统，其特征在于，包括权利要求7或8或9或10或11所述的具有自动答题功能的手写笔，以及印刷品；
    所述印刷品上印制有多个题目区及与题目区对应的答题区域，每个所述答题区域印制有与题目信息和答案信息及答题区域的坐标信息对应编码的OID编码。
  13. 一种智能终端，其特征在于，包括有存储器，以及一个或者一个以上的程序，其中一个或者一个以上程序存储于存储器中，且经配置以由一个或者一个以上处理器执行所述一个或者一个以上程序包含用于执行如权利要求1-6中任意一项所述的方法。
PCT/CN2022/073596 2021-04-27 2022-01-24 基于手写轨迹识别的答题处理方法、手写笔、系统及终端 WO2023123590A1 (zh)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113158932A (zh) * 2021-04-27 2021-07-23 深圳市众鑫创展科技有限公司 基于手写轨迹识别的答题处理方法、手写笔、系统及终端
CN114721760A (zh) * 2022-04-02 2022-07-08 京东科技信息技术有限公司 操作轨迹的处理方法、装置、电子设备及计算机存储介质
CN115565188B (zh) * 2022-04-30 2024-03-12 珠海凯芯微电子科技有限公司 一种点写笔及应用点写笔的书写轨迹记录方法及系统
CN115421603B (zh) * 2022-11-04 2023-04-07 荣耀终端有限公司 一种笔迹处理方法、终端设备及芯片系统
CN117315665A (zh) * 2023-11-30 2023-12-29 上海又寸科技有限公司 一种基于原笔迹识别的题目自动批阅方法及系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040121298A1 (en) * 2002-11-06 2004-06-24 Ctb/Mcgraw-Hill System and method of capturing and processing hand-written responses in the administration of assessments
CN108960149A (zh) * 2018-07-05 2018-12-07 深圳闳宸科技有限公司 试卷自动评阅方法、装置及电子设备
CN110189237A (zh) * 2019-05-13 2019-08-30 上海奇初教育科技有限公司 作业自动批改系统及批改方法
CN111047934A (zh) * 2020-01-07 2020-04-21 上海奇初教育科技有限公司 一种试卷制作及自动批改系统
CN112506360A (zh) * 2020-11-21 2021-03-16 陈颖 一种常规纸质书写作业或试卷的智能识别及批改方法
CN113158932A (zh) * 2021-04-27 2021-07-23 深圳市众鑫创展科技有限公司 基于手写轨迹识别的答题处理方法、手写笔、系统及终端
CN214504386U (zh) * 2021-04-27 2021-10-26 深圳市众鑫创展科技有限公司 一种具有自动答题功能的手写笔及手写笔系统

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040121298A1 (en) * 2002-11-06 2004-06-24 Ctb/Mcgraw-Hill System and method of capturing and processing hand-written responses in the administration of assessments
CN108960149A (zh) * 2018-07-05 2018-12-07 深圳闳宸科技有限公司 试卷自动评阅方法、装置及电子设备
CN110189237A (zh) * 2019-05-13 2019-08-30 上海奇初教育科技有限公司 作业自动批改系统及批改方法
CN111047934A (zh) * 2020-01-07 2020-04-21 上海奇初教育科技有限公司 一种试卷制作及自动批改系统
CN112506360A (zh) * 2020-11-21 2021-03-16 陈颖 一种常规纸质书写作业或试卷的智能识别及批改方法
CN113158932A (zh) * 2021-04-27 2021-07-23 深圳市众鑫创展科技有限公司 基于手写轨迹识别的答题处理方法、手写笔、系统及终端
CN214504386U (zh) * 2021-04-27 2021-10-26 深圳市众鑫创展科技有限公司 一种具有自动答题功能的手写笔及手写笔系统

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