CN107479841A - Control method, device, equipment and storage medium of double-plate display system - Google Patents

Abstract

The embodiment of the invention discloses a control method, a control device, control equipment and a storage medium of a double-board display system, wherein the method comprises the following steps: acquiring an image of the writing board according to the first control instruction to obtain a writing board image; and displaying the blackboard-writing image on an intelligent tablet, and executing an operation corresponding to a second control instruction on the blackboard-writing image. The blackboard-writing image on the writing board is displayed on the intelligent tablet, and the operation corresponding to the relevant control instruction is executed on the displayed blackboard-writing image.

Description

Control method, device, equipment and storage medium of double-plate display system

technical field

The present invention relates to the field of interactive technologies, in particular to a control method, device, equipment and storage medium of a double-board display system.

Background technique

In the teaching or conference system, the teacher or conference speaker usually pastes the content written on the blackboard or the picture to be displayed on the blackboard to the user; or, the pre-made electronic lecture notes or electronic documents are displayed on the smart on display.

However, when the content to be displayed is complex, it is not suitable for writing on the blackboard or cannot be added to electronic handouts or electronic documents for display, or in order to make the content to be displayed easier for viewers to understand, it is further necessary to further understand the complex content. When the content is marked or modified, how to realize the above situation is an urgent problem to be solved.

Contents of the invention

Embodiments of the present invention provide a control method, device, device, and storage medium for a double-board display system, so as to display blackboard writing images on a writing board on a smart tablet, and execute related control instructions on the displayed blackboard writing images corresponding operation.

In a first aspect, an embodiment of the present invention provides a method for controlling a double-board display system, the method comprising:

performing image acquisition on the writing board according to the first control instruction to obtain an image of writing on the writing board;

Displaying the blackboard image on the smart tablet, and performing an operation corresponding to the second control instruction on the blackboard image.

In the second aspect, the embodiment of the present invention also provides a control device for a double-board display system, the device comprising:

An image acquisition module, configured to acquire an image of the writing board according to the first control instruction to acquire an image of writing on the writing board;

An operation execution module, configured to display the blackboard image on the smart tablet, and execute an operation corresponding to the second control instruction on the blackboard image.

In the third aspect, the embodiment of the present invention also provides a device, including a memory, a processor, and a computer program stored in the memory and operable on the processor;

A camera, connected with the smart panel, is used to obtain blackboard images;

A control button, connected to the smart tablet, for sending a first control instruction;

When the processor executes the program, the control method of the double-board display system according to any one of the embodiments of the present invention is implemented.

In the fourth aspect, the embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the double-board display system as described in any one of the embodiments of the present invention is implemented. Control Method.

In the embodiment of the present invention, the blackboard writing image is obtained by collecting the image of the writing board according to the first control instruction, and then the blackboard writing image is displayed on the smart tablet, and the operation corresponding to the second control instruction is performed on the blackboard writing image . In order to realize displaying the blackboard writing image on the writing board on the smart tablet, and perform operations corresponding to relevant control instructions on the displayed blackboard writing image.

Description of drawings

Fig. 1 is a flow chart of a control method of a double board display system in Embodiment 1 of the present invention;

Fig. 2a is a flow chart of a control method of a double board display system in Embodiment 2 of the present invention;

Fig. 2b is a schematic diagram of a double-board teaching and display system applicable in Embodiment 2 of the present invention;

Fig. 2c is a schematic diagram of annotating blackboard writing images in a double-board teaching and display system applicable in Embodiment 2 of the present invention;

Fig. 2d is a schematic diagram of erasing blackboard writing images in a double-board teaching system applicable in Embodiment 2 of the present invention;

3 is a schematic structural view of a control device of a double-board display system in Embodiment 3 of the present invention;

Fig. 4 is a schematic structural diagram of a device in Embodiment 4 of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Embodiment one

Fig. 1 is a flow chart of a control method of a double-board display system provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where the content of the writing board needs to be displayed and modified on the smart tablet. This method can be implemented by this The invention is implemented by a control device of a double-panel display system provided in the embodiment, and the device can be realized by means of software and/or hardware. Referring to Fig. 1, the method specifically may include the following steps:

S110. Perform image acquisition on the writing board according to the first control instruction to acquire an image of writing on the writing board.

Specifically, the first control instruction may be generated by the user clicking a control button installed under the tablet, and the location where the control button is installed is not specifically limited, and may be installed at a location that is convenient for the user to touch. For example, when the writing board is a blackboard for teachers to teach, the control button can be installed on the fixed blackboard object near the lower right corner of the blackboard, and the teacher can click the control button at any time during the teaching process. Smart tablet to connect. Optionally, the object that fixes the blackboard can be a movable bracket or a wall, and the writing board can be a blackboard or a movable push-pull board. Image acquisition is performed on the writing board according to the first control instruction to obtain an image of writing on the writing board. Exemplarily, the writing image on the blackboard may be material used by the teacher in class, such as pictures of animals and plants, pictures of test questions, maps, etc., and the material may be manually pasted on the writing board by the teacher.

S120. Display the blackboard image on a smart tablet, and execute an operation corresponding to a second control instruction on the blackboard image.

Wherein, when the blackboard writing image is displayed on the smart tablet, the position of the blackboard writing image on the smart tablet corresponds to the position of the blackboard writing image on the writing board. In a specific example, when the writing board is a blackboard, and the writing image on the blackboard is a demonstration picture pasted by the user in the center of the blackboard, the position where the demonstration picture is displayed on the smart tablet is the center of the smart tablet. Optionally, the size of the smart tablet and the backboard can be set at a ratio of 1:1, then the blackboard image displayed on the smart tablet will be displayed in its original size without any size scaling.

After the blackboard image is displayed on the smart tablet, an operation corresponding to the second operation instruction is performed on the blackboard image. Optionally, the second operation instruction may be used to click an uplink function button on the smart tablet, and the function buttons include: annotation, deletion, revision, red mark, bold, highlight, partial enlargement, and the like.

In a specific scenario, the teacher uses the annotation function to make annotations and explanations on the teaching materials. If the annotation is wrong, you can use the erase function to erase it. At the same time, in order to make the students in the back row see more clearly, you can also use the zoom function to zoom in on the materials and annotations.

In the embodiment of the present invention, the blackboard writing image is obtained by collecting the image of the writing board according to the first control instruction, and then the blackboard writing image is displayed on the smart tablet, and the operation corresponding to the second control instruction is performed on the blackboard writing image . In order to realize displaying the blackboard writing image on the writing board on the smart tablet, and perform operations corresponding to relevant control instructions on the displayed blackboard writing image.

On the basis of the above technical solution, after the image acquisition of the writing board according to the first control instruction to obtain the blackboard writing image, it also includes: applying a preset correction algorithm to correct the blackboard writing image; applying a preset image enhancement algorithm to the blackboard writing image Image enhancement was performed on the corrected blackboard image.

Specifically, after image acquisition is performed on the writing board according to the first control instruction to acquire the writing image on the blackboard, the collected image is not directly displayed on the smart tablet. First, a preset correction algorithm is used to correct the blackboard writing image, which can be realized by applying an image correction algorithm such as a perspective transformation method or a control point transformation method. The image correction algorithm calculates the estimate of the real image from the distorted image, so that it is as close as possible to the real image according to the pre-specified error criterion.

Secondly, apply a preset image enhancement algorithm to perform image enhancement on the corrected blackboard image, which can be implemented by using an image enhancement algorithm such as histogram equalization. Image enhancement makes the original unclear image clear or emphasizes some interesting features, suppresses uninteresting features, improves image quality, enriches the amount of information, and enhances image interpretation and recognition effects.

By performing correction and image enhancement on the blackboard image and displaying it on the smart tablet, a clearer image closer to the real blackboard image is obtained.

Optionally, the blackboard image includes blackboard text and/or blackboard pictures.

Among them, taking the writing board as a blackboard as an example, when the application scenario is a teacher teaching, when the teacher writes the teaching content on the blackboard, such as an ancient poem, the image written on the blackboard is the text written on the blackboard; if the teacher draws a geometric figure on the blackboard to explain For math problems, the blackboard writing image is the blackboard writing picture. Optionally, the blackboard picture may also be a paper picture pasted on the writing board by the user.

Embodiment two

Fig. 2a is a flow chart of a control method of a double-board display system provided by Embodiment 2 of the present invention. On the basis of the above-mentioned embodiment, this embodiment "collects the image of the writing board according to the first control instruction to obtain blackboard writing" Image" optimized. Referring to Figure 2a, the method specifically may include the following steps:

S210. Acquire a first control instruction triggered by a user.

Specifically, the first control command is generated by the user clicking a control button installed near the tablet, and the control button is connected and communicated with the smart tablet through a universal serial bus interface, and a wireless communication module can also be integrated in the control button to Realize the data transmission with the smart tablet. Optionally, the first control instruction may be to trigger and start the picture display software installed on the smart tablet. Figure 2b shows a schematic diagram of a dual-board teaching display system, wherein 251 is a smart tablet, 252 is a writing board, 253 is a control button, 254 is a camera, and 255 is a function button of the smart tablet. In a specific scene, it can be installed on The function button in the software in the smart tablet, 256 is the blackboard writing image on the writing board, and 257 is the blackboard writing image displayed on the smart tablet.

It should be noted that the installation positions of the control buttons and the camera are only shown in the figure. The standard for the installation position of the control buttons can be convenient for the user to operate, and the standard for the installation position of the camera can be based on being able to capture the contents of the entire writing board. allow.

S220. Start a camera facing the writing board according to the first control instruction.

Wherein, the camera faces the writing board. FIG. 2b shows a double-board teaching display system. As shown in FIG. 2b, 254 is a camera. The first control instruction is analyzed, and the camera is started in response to the first control instruction. In a specific example, after receiving the first control instruction, the picture display software installed on the smart tablet is started, and the camera is started through the picture display software.

S230. Using the camera to photograph the writing board to acquire an image of writing on the writing board.

Specifically, the camera is connected to the smart tablet through a universal serial bus interface for data transmission, or communicates with the smart tablet through a wireless communication module integrated in the camera. The writing board is photographed by the camera to obtain images of blackboard writing on the writing board. Optionally, in order to enable the camera to capture all the words or pictures on the writing board, that is, to achieve the maximum photographic viewing angle, the camera adopts Wide-angle lens, its angle of view strives to meet or exceed the range that the human eye can see.

S240. Display the blackboard writing image on the smart tablet, and perform an operation corresponding to the second control instruction on the blackboard writing image.

In the embodiment of the present invention, by acquiring the first control instruction triggered by the user, the camera facing the writing board is activated according to the first control instruction, and the writing board is captured by the camera to obtain the blackboard writing image. The acquisition of blackboard writing images through the camera facing the writing board is realized.

Optionally, the displaying the blackboard image on the smart tablet, and performing an operation corresponding to the second control instruction on the blackboard image includes:

The blackboard image is displayed on the smart tablet. Wherein, the blackboard image is displayed on the smart tablet, and the user can directly watch the displayed smart image. Exemplarily, the blackboard image may be a text, a map, etc. for teaching, or a presentation for a meeting.

The second control instruction of the user is obtained, and the operation corresponding to the second control instruction is matched in the preset instruction list.

Specifically, operations corresponding to the second control instructions are stored in the preset instruction list. Optionally, the second control instruction may be generated by the user clicking a function button of the image display software installed on the smart tablet, and the preset instruction list is stored in the preset storage path of the function button. Each function button corresponds to a different operation. In a specific example, when the user clicks the function button of "Comment", by matching the corresponding operation in the preset command list, that is, the corresponding operation is to open "Comment" "Function.

Figure 2c shows a schematic diagram of annotating blackboard images in a double-board teaching display system. In a specific application scenario, when a geography teacher explains a map of China, he can first paste the map on the writing board on the right. The writing board can be an ordinary blackboard, and then click the control button installed under the ordinary blackboard. At this time, the smart tablet on the left will start the software for displaying pictures. After the software starts, it will take pictures through the camera above the ordinary blackboard on the right. The received photos are displayed in the middle area of the software interface, that is, the middle area of the smart tablet. At this time, the teacher can call the annotation function on the software to mark the provinces and regions on the map. If the map is too small for the students in the back row to see clearly, the teacher can also directly zoom in on the map through the software. After the annotation, the teacher can also use the eraser function to delete the annotation on the map. In Figure 2c, 260 is the map pasted on the writing board, 261 is the map displayed on the writing board on the smart tablet, and 262 is the part for annotating the map. Specific parts are explained in detail or remind students that this part is the key knowledge.

Figure 2d shows a schematic diagram of erasing blackboard images in a double-board teaching system. In a specific application scenario, the teacher pastes the teaching materials of matts onto the ordinary blackboard on the right, and then clicks the control button , the smart tablet on the left will display matts. Chinese teachers can use the erase function in the software to partially erase the original Chinese characters in matts. 270 is the content in the matts on the ordinary blackboard, which are the two words "flower" and "summer". In the process of training students to form words, the teacher can combine the words "duo" and "summer" on the smart tablet. Delete, so that the writing operation can be carried out again, 271 is the display content of the matts after the word "Duo" and "Xia" are deleted on the smart panel, so that the teacher does not need to change a background image again, which improves the teacher's ability. The teaching efficiency is higher, so that the teacher can teach. If the material is relatively small, you can also use the method function on the smart tablet to zoom in and display it, so that the students in the back row can see it more clearly.

The corresponding operation is performed on the blackboard image. After the operation corresponding to the user's second control instruction is acquired, the operation is performed on the blackboard image. In a specific example, it may be to annotate, delete, highlight, etc. the blackboard image.

By acquiring the user's second operation instruction to perform an operation corresponding to the second operation instruction on the blackboard image, the user's experience is improved

Embodiment Three

Fig. 3 is a schematic structural diagram of a control device for a double-board display system provided by Embodiment 3 of the present invention, and the device is suitable for implementing a control method for a double-board display system provided by the embodiment of the present invention. As shown in Figure 3, the device may specifically include:

An image acquisition module 310, configured to acquire an image of the writing board according to the first control instruction to acquire an image of writing on the blackboard;

The operation execution module 320 is configured to display the blackboard image on the smart tablet, and execute an operation corresponding to the second control instruction on the blackboard image.

Further, the image acquisition module 310 is specifically used for:

Obtaining the first control instruction triggered by the user;

start a camera facing the tablet according to the first control instruction;

The writing board is photographed by the camera to obtain images of blackboard writing on the writing board.

Further, the operation execution module 320 is specifically used for:

The blackboard image is displayed on the smart tablet;

Acquiring the second control instruction of the user, and matching the operation corresponding to the second control instruction in the preset instruction list;

The corresponding operation is performed on the blackboard image.

Further, the device also includes:

A correction module, configured to correct the blackboard image by applying a preset correction algorithm after image acquisition is performed on the writing board according to the first control instruction to obtain the blackboard image;

An image enhancement module, configured to apply a preset image enhancement algorithm to perform image enhancement on the corrected blackboard image.

Further, the blackboard image includes blackboard text and/or blackboard pictures.

The control device of the double-board display system provided in the embodiment of the present invention can execute the control method of the double-board display system provided in any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

Embodiment Four

FIG. 4 is a schematic structural diagram of a device provided by Embodiment 4 of the present invention. Figure 4 shows a block diagram of an exemplary device 12 suitable for use in implementing embodiments of the present invention. The device 12 shown in FIG. 4 is only an example, and should not limit the functions and scope of use of this embodiment of the present invention.

As shown in FIG. 4, device 12 takes the form of a general-purpose computing device. Components of the device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, a bus 18 connecting various system components (including the system memory 28 and the processing unit 16), a camera, and the The smart tablet is connected to acquire blackboard writing images; the control button is connected to the smart tablet and used to send the first control instruction, which is not shown in FIG. 4 .

Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus structures. These architectures include, by way of example, but are not limited to Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect ( PCI) bus.

Device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by device 12 and include both volatile and nonvolatile media, removable and non-removable media.

System memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and/or cache memory 32 . Device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read and write to non-removable, non-volatile magnetic media (not shown in FIG. 4, commonly referred to as a "hard drive"). Although not shown in FIG. 4, a disk drive for reading and writing to removable nonvolatile disks (e.g., "floppy disks") may be provided, as well as for removable nonvolatile optical disks (e.g., CD-ROM, DVD-ROM or other optical media) CD-ROM drive. In these cases, each drive may be connected to bus 18 via one or more data media interfaces. Memory 28 may include at least one program product having a set (eg, at least one) of program modules configured to perform the functions of various embodiments of the present invention.

A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including - but not limited to - an operating system, one or more application programs, other program Modules and program data, each or some combination of these examples may include the implementation of the network environment. Program modules 42 generally perform the functions and/or methodologies of the described embodiments of the invention.

Device 12 may also communicate with one or more external devices 14 (e.g., a keyboard, pointing device, display 24, etc.), and with one or more devices that enable a user to interact with Device 12 is capable of communicating with any device (eg, network card, modem, etc.) that communicates with one or more other computing devices. Such communication may occur through input/output (I/O) interface 22 . Also, device 12 may communicate with one or more networks (eg, local area network (LAN), wide area network (WAN), and/or public networks, such as the Internet) via network adapter 20 . As shown, network adapter 20 communicates with other modules of device 12 via bus 18 . It should be appreciated that although not shown in FIG. 4, other hardware and/or software modules may be used in conjunction with device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives And data backup storage system, etc.

The processing unit 16 executes various functional applications and data processing by running the program stored in the system memory 28, for example, realizing a control method of a double-board display system provided by the embodiment of the present invention:

That is to say, when the processing unit executes the program, it realizes: performing image acquisition on the writing board according to the first control instruction to obtain the writing image on the blackboard; 2. The operation corresponding to the control instruction.

Embodiment five

Embodiment 5 of the present invention provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, a control method for a double-board display system as provided in all invention embodiments of the present application is implemented:

That is to say, when the program is executed by the processor, it realizes: collecting images on the writing board according to the first control instruction to obtain blackboard writing images; displaying the blackboard writing images on the smart tablet, and performing the second control on the blackboard writing images. The operation corresponding to the instruction.

Any combination of one or more computer readable medium(s) may be utilized. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: electrical connections with one or more leads, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), Erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above. In this document, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a data signal carrying computer readable program code in baseband or as part of a carrier wave. Such propagated data signals may take many forms, including - but not limited to - electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. .

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including - but not limited to - wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out the operations of the present invention may be written in one or more programming languages, or combinations thereof, including object-oriented programming languages—such as Java, Smalltalk, C++, and conventional Procedural Programming Language - such as "C" or a similar programming language. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In cases involving a remote computer, the remote computer can be connected to the user computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (such as through an Internet service provider). Internet connection).

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (10)

1. A control method for a double-board display system, comprising: performing image acquisition on the writing board according to the first control instruction to obtain an image of writing on the writing board; Displaying the blackboard image on the smart tablet, and performing an operation corresponding to the second control instruction on the blackboard image. 2. The method according to claim 1, wherein the image acquisition of the writing board according to the first control instruction to obtain the blackboard writing image comprises: Obtaining the first control instruction triggered by the user; start a camera facing the tablet according to the first control instruction; The writing board is photographed by the camera to obtain images of blackboard writing on the writing board. 3. The method according to claim 1, wherein the displaying the blackboard writing image on a smart tablet, and performing an operation corresponding to a second control instruction on the blackboard writing image comprises: The blackboard image is displayed on the smart tablet; Acquiring the second control instruction of the user, and matching the operation corresponding to the second control instruction in the preset instruction list; The corresponding operation is performed on the blackboard image. 4. The method according to claim 1, further comprising: Applying a preset correction algorithm to correct the blackboard image; Applying a preset image enhancement algorithm to perform image enhancement on the corrected blackboard image. 5. The method according to any one of claims 1-4, characterized in that the blackboard image includes blackboard text and/or blackboard pictures. 6. A control device for a double-board display system, comprising: An image acquisition module, configured to acquire an image of the writing board according to the first control instruction to acquire an image of writing on the writing board; An operation execution module, configured to display the blackboard image on the smart tablet, and execute an operation corresponding to the second control instruction on the blackboard image. 7. The device according to claim 6, wherein the image acquisition module is specifically used for: Obtaining the first control instruction triggered by the user; start a camera facing the tablet according to the first control instruction; The writing board is photographed by the camera to obtain images of blackboard writing on the writing board. 8. The device according to claim 6, wherein the operation execution module is specifically configured to: The blackboard image is displayed on the smart tablet; Acquiring the second control instruction of the user, and matching the operation corresponding to the second control instruction in the preset instruction list; The corresponding operation is performed on the blackboard image. 9. A device, characterized in that it comprises: memory, processor, and computer programs stored on the memory and operable on the processor; A camera, connected with the smart panel, is used to obtain blackboard images; A control button, connected to the smart tablet, for sending a first control command; The processor implements the method according to any one of claims 1-5 when executing the program. 10. A computer-readable storage medium, on which a computer program is stored, wherein, when the program is executed by a processor, the method according to any one of claims 1-5 is implemented.