WO2019033659A1 - 教学板书显示方法、装置、设备及计算机可读存储介质 - Google Patents

教学板书显示方法、装置、设备及计算机可读存储介质 Download PDF

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WO2019033659A1
WO2019033659A1 PCT/CN2017/116764 CN2017116764W WO2019033659A1 WO 2019033659 A1 WO2019033659 A1 WO 2019033659A1 CN 2017116764 W CN2017116764 W CN 2017116764W WO 2019033659 A1 WO2019033659 A1 WO 2019033659A1
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Prior art keywords
board
writing
image
teaching
blackboard
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PCT/CN2017/116764
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English (en)
French (fr)
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王东杰
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广州视源电子科技股份有限公司
广州视睿电子科技有限公司
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Publication of WO2019033659A1 publication Critical patent/WO2019033659A1/zh

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    • 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
    • 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00—Electrically-operated educational appliances
    • G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip

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  • the present invention relates to an e-learning technology, and more particularly to a teaching board display method, apparatus, device and computer readable storage medium.
  • the writing board on the electronic whiteboard provided by the touch screen terminal has the advantages of no dust, no effort and easy erasing, so the electronic whiteboard is gradually popularized in the teaching classroom.
  • the electronic whiteboard can not restore some details such as the pen, which may result in poor viewing of the saved blackboard, especially for courses that need to restore handwriting details, such as art, calligraphy, and so on.
  • auxiliary educational equipment such as a triangular board.
  • the touch screen will misjudge that the triangular board is the content of the board and display it, resulting in more unnecessary contents of the final displayed board.
  • the embodiment of the invention provides a teaching board display method, device, device and computer readable storage medium, so as to realize an enlarged writing area, so that the teacher can follow the plan to improve the quality of education.
  • an embodiment of the present invention provides a teaching board display method, including:
  • a blackboard image with the latest storage time is displayed on the display terminal disposed adjacent to the writing board.
  • the embodiment of the present invention further provides a teaching board display device, including:
  • An acquisition module configured to collect and save a blackboard image corresponding to each board content on the writing board
  • a confirmation module for confirming that a new board content is added to the writing board
  • a display module configured to display a blackboard image with the latest storage time on the display terminal disposed adjacent to the writing board.
  • an embodiment of the present invention further provides a teaching board display device, including a memory, a processor, and a computer program stored on the memory and operable on the processor, further comprising: a display terminal, a writing board, and a orientation An image collector for collecting a book image on the tablet on the surface of the tablet; wherein the processor executes the program to implement the above teaching method.
  • an embodiment of the present invention further provides a computer readable storage medium, wherein the computer program is stored thereon, wherein the program is implemented by the processor to implement the teaching board display method.
  • the invention collects and saves the blackboard image corresponding to the content of each board book.
  • the teacher writes the new board book content on the writing board
  • the saved board image is displayed on the display terminal adjacent to the writing board, so that during the writing process,
  • the teacher does not have to worry about affecting the students' record notes after erasing the board, but can erase the board book in time to write the next board book and expand the writing area.
  • the teacher is not convenient to erase the board in time, resulting in insufficient writing area to suspend the lecture.
  • the problem is to expand the writing area and enable teachers to follow the plan in order to improve the quality of education.
  • FIG. 1 is a flowchart of a teaching board display method according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic diagram of an implementation principle of step 110 according to Embodiment 1 of the present invention.
  • FIG. 3 is a flowchart of a teaching board display method according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic structural diagram of a teaching board display device according to Embodiment 3 of the present invention.
  • FIG. 5 is a schematic structural diagram of a teaching board display device provided by Embodiment 4 of the present invention.
  • FIG. 1 is a flowchart of a method for displaying a teaching board according to a first embodiment of the present invention.
  • the embodiment is applicable to a case where a writing board is used in a teaching class, and the method can be performed by a teaching board display device, and the method includes :
  • Step 110 Collect and save a blackboard image corresponding to each board content on the writing board;
  • Step 120 Confirm that a new board content is added to the writing board
  • Step 130 Display a blackboard image with the latest storage time on the display terminal disposed adjacent to the writing board.
  • the teacher when the teacher writes a blackboard on the writing board, the image of the blackboard corresponding to the previous blackboard is displayed on the display terminal, so that the teacher can erase the writing of the writing board in time to obtain the writing area and write the next.
  • the slate book continues to be written and taught.
  • step 110 specifically includes:
  • the height of the blank writing range is less than a preset first threshold, it is determined that the temporary image is a blackboard image, and the blackboard image is saved.
  • FIG. 2 is a schematic diagram of the implementation principle of step 110.
  • the teaching board display device includes a tablet 21 and a display terminal 22. After the temporary image generated by the current board content is acquired, the temporary image has a writing handwriting on the writing board 21, that is, the content shown in the area 23 on the writing board 21, and the temporary image is recognized and processed. When it is confirmed in the temporary image that the blank writing range height h below the writing handwriting is smaller than the preset first threshold value, it is determined to be a blackboard image, and the blackboard image is saved.
  • the book image can be displayed in the adjacent display terminal 22, and then the teacher can erase the book on the tablet 21 to continue writing.
  • the teaching board display device automatically collects the temporary image and determines whether the temporary image is a blackboard image corresponding to the board book. Without the additional labor of the teacher, the teacher can timely erase the board and enlarge the writing area.
  • step 120 it is confirmed that the board is started to add a new board content, and after the board image is collected, it is automatically confirmed that the board starts to add a new board content, and then the latest storage time is displayed.
  • the board image can also confirm whether to start adding new board contents through some effective judgment mechanisms.
  • step 120 specifically includes:
  • the height of the writing stroke is greater than a preset second threshold, it is confirmed that a new board content is added to the writing board.
  • the height of the writing handwriting is getting higher and higher, that is, after reaching the second threshold for the first time, it is always larger than the second threshold, and the second threshold greater than the preset threshold can be confirmed only for the first time. Subsequent responses are then made, after which consecutive decisions can be ignored.
  • step 130 specifically includes:
  • the newly added board image is added below the last saved board image.
  • the blackboard display document will include the blackboard image of each board book in the teaching process of the teacher, so that the board book record can be formed for the students to review after class, or for the teacher to reuse, eliminating the trouble of repeated writing. Reduce the burden on the teacher.
  • the newly added blackboard image is added to the image of the last saved blackboard book, and specifically includes:
  • the newly added cut board image is added below the last cut board image.
  • the image of the blackboard is cut, the blank writing range above and below the handwriting in the image of the blackboard is removed, and the image of the cut book is spliced to the bottom of the image of the previous book, and the document is displayed between the book and the book.
  • the color of the pixel with the same color feature value and the color feature value of the surface of the tablet may be set to a preset background color, such as a transparent color, so that the handwriting of the board display file is more distinct. Read more.
  • the touch screen terminal can intercept the closed image formed by the writing area of the electronic whiteboard as a temporary image on the terminal display interface; if the writing board is a traditional blackboard, the writing board can pass An image collector, such as a camera, that faces the surface of the teaching tablet is controlled to capture the temporary image.
  • An image collector such as a camera
  • the display terminal adjacent to the tablet displays the saved board image, thereby making the writing process
  • the teacher does not have to worry about the student's record notes after erasing the board, can erase the board book in time to write the next board book, expand the writing area, and solve the problem in the prior art, the teacher is not convenient to erase the board in time, resulting in insufficient writing area.
  • an automatic acquisition of the board image is provided, without additional labor for the teacher. It also generates a blackboard display file containing all the contents of the blackboard for teachers and students to use after class.
  • FIG. 3 is a flowchart of a method for displaying a teaching board according to a second embodiment of the present invention.
  • the embodiment is applicable to a case where a writing board is used in a teaching class, and the method can be performed by a teaching board display device, and the method includes The same steps as steps 110, 120, and 130 in Example 1, except that for step 110, there are different specific implementations.
  • step 110 is specifically: collecting and saving the current board book content generation board image on the tablet when receiving the acquisition instruction triggered by the operation of the user.
  • the image collection work is triggered according to the operation of the user, and each acquired image is used as a blackboard image corresponding to a board book. That is to say, in the teaching course, when the teacher needs to erase the board to obtain the writing area, the trigger operation is performed, so that the teaching board display device collects the board image.
  • displaying the latest blackboard image on the display terminal which may be the corresponding specific solution provided in the first embodiment, or when the new book image is added, the previously displayed blackboard image is closed, and the storage time is displayed.
  • the latest board image can also be implemented on a case-by-case basis. Since the image of the previous board book is often associated with the currently written board book, displaying the board image of the last board book on the display terminal can facilitate the teacher's comparison, and only displays the board image of a board book, which can make a board book. The board image gets enough display space for students to watch.
  • the teacher by collecting and saving the blackboard image corresponding to each board book content, when the teacher writes a new board book content on the tablet, the saved board image is displayed on the display terminal adjacent to the tablet, thereby During the writing process, the teacher does not have to worry about affecting the student's recorded notes after erasing the board. In time, the board can be erased to write the next board, and the writing area is enlarged. In the prior art, the teacher is inconvenient to erase the board in time, resulting in the writing area. Not enough to suspend the lectures and achieve expanded writing The area allows the teacher to follow the instructions in order to improve the quality of education. Further, the acquisition instruction is triggered according to the user's operation, so that the collection of the board image is more precise, and the collection of the repeated content is prevented from affecting the reading or missing the useful content.
  • FIG. 4 is a schematic structural diagram of a teaching board display device according to Embodiment 3 of the present invention.
  • the teaching board display device comprises:
  • the collecting module 310 is configured to collect and save a blackboard image corresponding to each board content of the writing board;
  • the confirmation module 320 is configured to confirm that a new board content is added to the writing board
  • the display module 330 is configured to display a blackboard image with the latest storage time on the display terminal disposed adjacent to the writing board.
  • the collecting module 310 includes:
  • a generating unit configured to generate a temporary image by collecting the current board content on the writing board according to a preset frequency
  • a calculating unit configured to calculate a height of a blank writing range below the writing handwriting in the temporary image
  • a saving unit configured to determine that the temporary image is a blackboard image and save the blackboard image if the height of the blank writing range is less than a preset first threshold.
  • the confirmation module 320 further includes:
  • a second calculating unit configured to calculate a height of the writing handwriting in the temporary image
  • a confirmation unit configured to confirm if the height of the writing stroke is greater than a preset second threshold A new board content is added to the writing board.
  • the saving module is specifically configured to collect and save the current board content generated board image on the tablet when receiving the acquisition instruction triggered by the operation of the user.
  • the display module 330 includes:
  • an updating unit configured to display, on the display terminal, a new board image in the board display file.
  • the adding unit includes:
  • a detecting subunit configured to detect a writing handwriting in the newly added blackboard image, and obtain an ordinate interval of the writing handwriting in the newly added blackboard image
  • the teaching board display device provided by the embodiment of the present invention can execute the teaching board display method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.
  • FIG. 5 is a schematic structural diagram of a teaching board display device according to Embodiment 4 of the present invention.
  • the device includes a processor 410, a memory 420, a tablet 430, a display terminal 440, and a surface facing the tablet.
  • An image collector 450 eg, a camera for acquiring a tablet;
  • the number of the intermediate processors 410 may be one or more, and one processor 410 is taken as an example in FIG.
  • the teaching board display device can execute the teaching board display method provided by the above embodiment.
  • the memory 420 is used as a computer readable storage medium, and can be used for storing a software program, a computer executable program, and a module, as in the embodiment of the present invention.
  • the teaching board displays the program instructions/modules corresponding to the method (for example, the acquisition module, the confirmation module, and the display module in the teaching board display device).
  • the processor 410 executes various functional applications and data processing of the device by executing software programs, instructions, and modules stored in the memory 420, that is, the teaching board display method provided by the above embodiments.
  • the memory 420 may mainly include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the terminal, and the like.
  • memory 420 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • memory 420 can further include memory remotely located relative to processor 410, which can be connected to the device over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the fifth embodiment of the present invention further provides a computer readable storage medium, where the computer program is stored, and when the program is executed by the processor, the teaching board display method according to any one of the above embodiments is implemented.
  • the computer readable storage medium provided by the embodiment of the present invention is not limited to the method operation as described above, and may also perform related operations in the teaching board display method provided by any embodiment of the present invention.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • FLASH FLASH
  • hard disk or optical disk etc., including a number of instructions to make a computer device (can be a personal computer)
  • the server, or network device, etc. performs the methods described in various embodiments of the present invention.
  • each unit and module included is only divided according to functional logic, but is not limited to the above division, as long as the corresponding function can be implemented;
  • the specific names of the respective functional units are also for convenience of distinguishing from each other and are not intended to limit the scope of protection of the present invention.

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Abstract

一种教学板书显示方法、教学板书显示装置、设备和计算机可读存储介质，所述方法包括：采集并保存书写板上的每一板板书内容对应的板书图像（110）；确认所述书写板上开始增加一板新的板书内容（120）；在所述书写板相邻设置的显示终端上显示保存时间最晚的板书图像（130）。上述方法解决现有技术中，老师不便于及时擦除板书，造成书写面积不够要暂停讲课的问题，实现扩大书写面积，使老师按照计划循序讲课，提高教育质量的效果。

Description

教学板书显示方法、装置、设备及计算机可读存储介质 技术领域
本发明涉及电子教学技术，尤其涉及一种教学板书显示方法、装置、设备及计算机可读存储介质。
背景技术
在触摸屏终端提供的电子白板上书写板书具有无粉尘、书写不费力和方便擦除等优势，因此电子白板逐渐在教学课堂上普及使用。但其并不能替代传统黑板，因为电子白板不能还原出笔锋等一些细节，可能导致保存的板书观看效果不佳，特别对一些需要还原笔迹细节的课程，如美术、书法课等。而且无法排除辅助教育设备(如三角板等)的干扰，例如使用三角板在黑板进行量测时，触摸屏会误判此三角板是板书内容，并进行显示，导致最终显示的板书多了多余的内容。
而传统的书写板，如黑板和白板，书写面积有限，且一旦擦除了就无法还原，因此需要学生快速做笔记，如果老师为了照顾学生做笔记，就需要延缓擦除板书，则会因为书写面积不够要暂停讲课，会拖慢教学进度，影响教育质量。
发明内容
本发明实施例提供一种教学板书显示方法、装置、设备及计算机可读存储介质，以实现扩大书写面积，使老师按照计划循序讲课，提高教育质量。
第一方面，本发明实施例提供了一种教学板书显示方法，包括：
采集并保存书写板上的每一板板书内容对应的板书图像；
确认所述书写板上开始增加一板新的板书内容；
在所述书写板相邻设置的显示终端上显示保存时间最晚的板书图像。
第二方面，本发明实施例还提供了一种教学板书显示装置，包括：
采集模块，用于采集并保存书写板上的每一板板书内容对应的板书图像；
确认模块，用于确认所述书写板上开始增加一板新的板书内容；
显示模块，用于在所述书写板相邻设置的显示终端上显示保存时间最晚的板书图像。
第三方面，本发明实施例还提供了一种教学板书显示设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，还包括：显示终端、书写板和朝向所述书写板表面的用于采集书写板上的板书图像的图像采集器；其中，所述处理器执行所述程序时实现上述的教学板书显示方法。
第四方面，本发明实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行时实现上述的教学板书显示方法。
本发明通过采集并保存每一板板书内容对应的板书图像，当老师在书写板书写新的板书内容时，书写板相邻设置的显示终端上显示保存的板书图像，从而使得在书写过程中，老师不必担心擦除板书后影响学生记录笔记，可及时擦除板书进行下一板板书的书写，扩大书写面积，解决现有技术中，老师不便于及时擦除板书，造成书写面积不够要暂停讲课的问题，实现扩大书写面积，使老师按照计划循序讲课，提高教育质量的效果。
附图说明
图1是本发明实施例一提供的教学板书显示方法的流程图；
图2是本发明实施例一步骤110的实施原理的示意图；
图3是本发明实施例二提供的教学板书显示方法的流程图；
图4是本发明实施例三提供的教学板书显示装置的结构示意图；
图5是本发明实施例四提供的教学板书显示设备的结构示意图。
具体实施方式
下面结合附图和实施例对本发明作进一步的详细说明。可以理解的是，此处所描述的具体实施例仅仅用于解释本发明，而非对本发明的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本发明相关的部分而非全部结构。
实施例一
图1为本发明实施例一提供的教学板书显示方法的流程图，本实施例可适用于在教学课堂上使用书写板书写板书的情况，该方法可以由教学板书显示设备来执行，该方法包括：
步骤110、采集并保存书写板上的每一板板书内容对应的板书图像；
步骤120、确认所述书写板上开始增加一板新的板书内容；
步骤130、在所述书写板相邻设置的显示终端上显示保存时间最晚的板书图像。
按照上述步骤，老师在书写板上书写板书时，显示终端上会显示之前板书对应的板书图像，使得老师可以及时擦除书写板的笔迹获得书写面积书写下一 板板书，继续进行板书和授课。
具体地，本实施例自动采集板书图像，根据书写板上的空白书写范围的大小判断采集到的板书图像是否为一整板板书对应的板书图像。由于板书一般都是从上往下写，因此可根据笔迹下方的空白书写范围的高度来判断。即步骤110具体包括：
按照预设的频率采集书写板上的当前板书内容生成临时图像；
计算所述临时图像中，书写笔迹下方的空白书写范围的高度；
如果所述空白书写范围的高度小于预设的第一阈值，则确定所述临时图像为板书图像，保存所述板书图像。
参见图2，图2是步骤110的实施原理的示意图。教学板书显示设备包括书写板21和显示终端22。当采集了当前板书内容生成的临时图像后，临时图像中会有书写板21上的书写笔迹，也就是书写板21上如图中区域23所示的内容，对临时图像进行识别处理，当从临时图像中确认书写笔迹下方的空白书写范围高度h小于预设的第一阈值时，则确定其为板书图像，保存板书图像。可以在相邻的显示终端22中显示板书图像，继而老师可以擦除书写板21上的板书继续书写。按照上述具体方案，教学板书显示设备自动采集临时图像和判断临时图像是否一板板书对应的板书图像，无需老师增加额外的劳动，就可以达到让老师可以及时擦除板书，扩大书写面积的效果。
进一步地，对于步骤120确认所述书写板上开始增加一板新的板书内容，可以是在采集到板书图像后自动确认书写板上开始增加一板新的板书内容，继而显示保存时间最晚的板书图像，也可以通过一些有效的判断机制确认是否开始增加新的板书内容，例如，步骤120具体包括：
计算所述临时图像中书写笔迹的高度；
如果所述书写笔迹的高度大于预设的第二阈值，则确认所述书写板上开始增加一板新的板书内容。
在这一过程中，原有的一板板书内容书写完成并完成板书图像的采集后，可能不是马上开始新的板书内容的书写，而是保留当前一板板书内容进行复述回顾等，此时不需要将当前一板板书内容对应的板书图像进行显示，可以持续显示前一板板书内容的图像，这种显示方式相当于可以看到当前的板书内容和前一板的板书内容，实现更有连贯性的显示；当临时图像中书写笔迹的高度达到一定的高度，即第二阈值时，则确认所述书写板上开始增加一板新的板书内容，可以更新显示终端上的显示内容。另外，在一板板书过程中，书写笔迹的高度越来越高，即第一次达到第二阈值之后，始终会比第二阈值大，大于预设的第二阈值可以只在第一次确认之后进行后续响应，之后连续的判断可以忽略。
在上述技术方案的基础上，步骤130具体包括：
在所述书写板相邻设置的显示终端上显示的板书展示文件中，将新增的板书图像添加到上一张保存的板书图像下方。
在所述显示终端上显示所述板书展示文件中新增的板书图像。
按照上述具体方案，板书展示文件中会包含老师在教学过程中，每一板板书的板书图像，从而可以形成板书记录，供学生课后复习，或供老师重复使用，免去重复书写的麻烦，减轻老师的负担。
更进一步地，所述在所述书写板相邻设置的显示终端上显示的板书展示文件中，将新增的板书图像添加到上一张保存的板书图像下方，具体包括：
检测新增的板书图像中的书写笔迹，得到所述书写笔迹在所述新增的板书 图像中的纵坐标区间；
剔除处于所述纵坐标区间外的局部图像，得到裁剪后的板书图像；
在所述书写板相邻设置的显示终端上显示的板书展示文件中，将新增的裁剪后的板书图像添加到上一张裁剪后的板书图像的下方。
上述进一步方案，对板书图像进行裁剪，去掉板书图像中笔迹上方和下方的空白书写范围，将裁剪后的板书图像拼接到上一张板书图像的下方，则板书展示文件中，板书与板书之间衔接得更好，方便课后查看。进一步地，还可以将板书图像中，色彩特征值与书写板表面的色彩特征值相同的像素点的色彩设置为预先设定的背景色，例如透明色，使得板书展示文件的笔迹更分明，可读性更强。
在具体实施时，若书写板为触摸屏终端提供的电子白板，则触摸屏终端可以通过在终端显示界面上截取电子白板的书写区域形成的封闭图像作为临时图像；若书写板为传统黑板，则可通过控制朝向教学书写板表面的图像采集器，例如摄像头，来实现采集临时图像。
本实施例的技术方案，通过采集并保存每一板板书对应的板书图像，当老师在书写板书写新的板书内容时，书写板相邻的显示终端显示保存的板书图像，从而使得在书写过程中，老师不必担心擦除板书后影响学生记录笔记，可及时擦除板书进行下一板板书的书写，扩大书写面积，解决现有技术中，老师不便于及时擦除板书，造成书写面积不够要暂停讲课的问题，实现扩大书写面积，使老师按照计划循序讲课，提高教育质量的效果。进一步地，还提供了自动采集板书图像，无需老师增加额外的劳动。还能生成包含所有板书内容的板书展示文件供老师和学生课后使用。
实施例二
图3为本发明实施例二提供的教学板书显示方法的流程图，本实施例可适用于在教学课堂上使用书写板书的情况，该方法可以由教学板书显示设备来执行，该方法包括与实施例一中步骤110、120和130相同的步骤，不同处在于对于步骤110，有不同的具体实施方案。
具体地，本实施例中，步骤110具体为：在接收到由用户的操作触发的采集指令时，采集并保存所述书写板上的当前板书内容生成板书图像。
本实施例根据用户的操作来触发图像采集工作，将每次采集的图像都作为一板板书对应的板书图像。即老师在教学课程中，需要擦除板书获得书写面积时，执行触发操作，使教学板书显示设备采集板书图像。
在本实施例中，在显示终端上显示保存时间最晚的板书图像，可以是实施例一提供的相应具体方案，也可以是在新增板书图像时，关闭之前显示的板书图像，显示保存时间最晚的板书图像。还可以根据具体情况实施其他方案。由于上一板板书的图像与当前书写的板书往往关联性较大，在显示终端上显示上一板板书的板书图像可方便老师对比，同时仅显示一板板书的板书图像，可使一板板书的板书图像得到足够的显示空间，方便学生观看。
本实施例的技术方案，通过采集并保存每一板板书内容对应的板书图像，当老师在书写板书写新的板书内容时，书写板相邻的显示终端上显示保存的板书图像，从而使得在书写过程中，老师不必担心擦除板书后影响学生记录笔记，可及时擦除板书进行下一板板书的书写，扩大书写面积，解决现有技术中，老师不便于及时擦除板书，造成书写面积不够要暂停讲课的问题，实现扩大书写 面积，使老师按照计划循序讲课，提高教育质量的效果。进一步地，根据用户的操作触发采集指令，使得对板书图像的采集更精准，避免采集到重复的内容影响阅读或错过有用的内容。
实施例三
图4为本发明实施例三提供的教学板书显示装置的结构示意图。该教学板书显示装置，包括：
采集模块310，用于采集并保存书写板上的每一板板书内容对应的板书图像；
确认模块320，用于确认所述书写板上开始增加一板新的板书内容；
显示模块330，用于在所述书写板相邻设置的显示终端上显示保存时间最晚的板书图像。
作为其中一种实施方式，所述采集模块310包括：
生成单元，用于按照预设的频率采集书写板上的当前板书内容生成临时图像；
计算单元，用于计算所述临时图像中，书写笔迹下方的空白书写范围的高度；
保存单元，用于如果所述空白书写范围的高度小于预设的第一阈值，则确定所述临时图像为板书图像，保存所述板书图像。
在上述实施方式的基础上，进一步地，所述确认模块320包括：
第二计算单元，用于计算所述临时图像中书写笔迹的高度；
确认单元，用于如果所述书写笔迹的高度大于预设的第二阈值，则确认所 述书写板上开始增加一板新的板书内容。
作为另一种实施方式，所述保存模块具体用于在接收到由用户的操作触发的采集指令时，采集并保存所述书写板上的当前板书内容生成板书图像。
优选地，所述显示模块330包括：
添加单元，用于在所述书写板相邻设置的显示终端上显示的板书展示文件中，将新增的板书图像添加到上一张保存的板书图像的下方；
更新单元，用于在所述显示终端上显示所述板书展示文件中新增的板书图像。
进一步地，所述添加单元包括：
检测子单元，用于检测新增的板书图像中的书写笔迹，得到所述书写笔迹在所述新增的板书图像中的纵坐标区间；
裁剪子单元，用于剔除处于所述纵坐标区间外的局部图像，得到裁剪后的板书图像；
添加子单元，用于在所述书写板相邻设置的显示终端上显示的板书展示文件中，将新增的裁剪后的板书图像添加到上一张裁剪后的板书图像的下方。
本发明实施例所提供的教学板书显示装置可执行本发明任意实施例所提供的教学板书显示方法，具备执行方法相应的功能模块和有益效果。
实施例四
图5为本发明实施例四提供的一种教学板书显示设备的结构示意图，如图4所示，该设备包括处理器410、存储器420、书写板430、显示终端440和朝向所述书写板表面的用于采集书写板上的图像采集器450(例如摄像头)；设备 中处理器410的数量可以是一个或多个，图5中以一个处理器410为例。
该教学板书显示设备可执行上述实施例提供的教学板书显示方法，具体地，存储器420作为一种计算机可读存储介质，可用于存储软件程序、计算机可执行程序以及模块，如本发明实施例中的教学板书显示方法对应的程序指令/模块(例如，教学板书显示装置中的采集模块、确认模块和显示模块)。处理器410通过运行存储在存储器420中的软件程序、指令以及模块，从而执行设备的各种功能应用以及数据处理，即实现上述实施例提供的教学板书显示方法。
存储器420可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据终端的使用所创建的数据等。此外，存储器420可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器420可进一步包括相对于处理器410远程设置的存储器，这些远程存储器可以通过网络连接至设备。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
实施例五
本发明实施例五还提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述实施例任一所述的教学板书显示方法。
当然，本发明实施例所提供的一种计算机可读存储介质，其计算机程序不限于如上所述的方法操作，还可以执行本发明任意实施例所提供的教学板书显示方法中的相关操作。
通过以上关于实施方式的描述，所属领域的技术人员可以清楚地了解到， 本发明可借助软件及必需的通用硬件来实现，当然也可以通过硬件实现，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在计算机可读存储介质中，如计算机的软盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、闪存(FLASH)、硬盘或光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
值得注意的是，上述教学板书显示装置的实施例中，所包括的各个单元和模块只是按照功能逻辑进行划分的，但并不局限于上述的划分，只要能够实现相应的功能即可；另外，各功能单元的具体名称也只是为了便于相互区分，并不用于限制本发明的保护范围。
需要说明的是，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
注意，上述仅为本发明的较佳实施例及所运用技术原理。本领域技术人员会理解，本发明不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本发明的保护范围。因此，虽然通过以上实施例对本发明进行了较为详细的说明，但是本发明不仅仅限于以上实施例，在不脱离本发明构思的情况下，还可以包括更多其他等效实施例，而本发明的范围由所附的权利要求范围决定。

Claims (10)

  1. 一种教学板书显示方法，其特征在于，包括：
    采集并保存书写板上的每一板板书内容对应的板书图像；
    确认所述书写板上开始增加一板新的板书内容；
    在所述书写板相邻设置的显示终端上显示保存时间最晚的板书图像。
  2. 如权利要求1所述的教学板书显示方法，其特征在于，所述采集并保存书写板上的每一板板书内容对应的板书图像，具体包括：
    按照预设的频率采集书写板上的当前板书内容生成临时图像；
    计算所述临时图像中，书写笔迹下方的空白书写范围的高度；
    如果所述空白书写范围的高度小于预设的第一阈值，则确定所述临时图像为板书图像，保存所述板书图像。
  3. 如权利要求1所述的教学板书显示方法，其特征在于，所述采集并保存书写板上的每一板板书内容对应的板书图像，具体包括：
    在接收到由用户的操作触发的采集指令时，采集并保存所述书写板上的当前板书内容生成板书图像。
  4. 如权利要求2所述的教学板书显示方法，其特征在于，所述确认所述书写板上开始增加一板新的板书内容，具体包括：
    计算所述临时图像中书写笔迹的高度；
    如果所述书写笔迹的高度大于预设的第二阈值，则确认所述书写板上开始增加一板新的板书内容。
  5. 如权利要求1至3任一项所述的教学板书显示方法，其特征在于，所述在所述书写板相邻设置的显示终端上显示保存时间最晚的板书图像，具体包括：
    在所述书写板相邻设置的显示终端上显示的板书展示文件中，将新增的板 书图像添加到上一张保存的板书图像的下方；
    在所述显示终端上显示所述板书展示文件中新增的板书图像。
  6. 如权利要求5所述的教学板书显示方法，其特征在于，所述在所述书写板相邻设置的显示终端上显示的板书展示文件中，将新增的板书图像添加到上一张保存的板书图像的下方，具体包括：
    检测新增的板书图像中的书写笔迹，得到所述书写笔迹在所述新增的板书图像中的纵坐标区间；
    剔除处于所述纵坐标区间外的局部图像，得到裁剪后的板书图像；
    在所述书写板相邻设置的显示终端上显示的板书展示文件中，将新增的裁剪后的板书图像添加到上一张裁剪后的板书图像的下方。
  7. 一种教学板书显示装置，其特征在于，包括：
    采集模块，用于采集并保存书写板上的每一板板书内容对应的板书图像；
    确认模块，用于确认所述书写板上开始增加一板新的板书内容；
    显示模块，用于在所述书写板相邻设置的显示终端上显示保存时间最晚的板书图像。
  8. 如权利要求7所述的教学板书显示装置，其特征在于，所述采集模块包括：
    生成单元，用于按照预设的频率采集书写板上的当前板书内容生成临时图像；
    计算单元，用于计算所述临时图像中，书写笔迹下方的空白书写范围的高度；
    保存单元，用于如果所述空白书写范围的高度小于预设的第一阈值，则确 定所述临时图像为板书图像，保存所述板书图像。
  9. 一种教学板书显示设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，其特征在于，还包括：显示终端、书写板和朝向所述书写板表面的用于采集书写板上的板书图像的图像采集器；其中，所述处理器执行所述程序时实现如权利要求1至6中任一所述的教学板书显示方法。
  10. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，该程序被处理器执行时实现如权利要求1至6中任一所述的教学板书显示方法。
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