CN113297923A - Display screen monitoring method, device and system and embedded processor - Google Patents
Display screen monitoring method, device and system and embedded processor Download PDFInfo
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Abstract
The embodiment of the invention provides a display screen monitoring method, a display screen monitoring device, a display screen monitoring system and an embedded processor. The display screen monitoring method comprises the following steps: acquiring lamp point state information when a display screen displays a picture of a video input source; acquiring a plurality of continuous video frame images of the video input source; and respectively fusing the video frame images with the lamp point state information to obtain a plurality of display screen monitoring images for monitoring the display screen. According to the technical scheme, the monitoring image of the display screen can be directly obtained at the computer end, the operation difficulty of monitoring is reduced, and the problem that the existing display screen monitoring system needs to additionally erect the camera is solved.
Description
Technical Field
The invention relates to the field of display screens, in particular to a display screen monitoring method, a display screen monitoring device, a display screen monitoring system and an embedded processor.
Background
Display screens such as LED display screens are widely used in various indoor and outdoor applications due to their advantages of high brightness, wide color gamut and flexible splicing. At present, when monitoring the screen display content and the display state of a display screen, a camera needs to be installed and erected near the screen, and the screen display content and the working state are monitored in real time through images shot by the camera. This method requires additional equipment, resulting in higher equipment costs, installation costs, maintenance costs, and operational difficulties.
Disclosure of Invention
In view of the above problems, embodiments of the present invention provide a display screen monitoring method, a display screen monitoring apparatus, a display screen monitoring system, and an embedded processor, which solve the problem that additional cameras need to be erected for display screen monitoring, save equipment cost, installation cost, and maintenance cost, and reduce operation difficulty.
On one hand, the display screen monitoring method provided by the embodiment of the invention comprises the following steps: acquiring lamp point state information when a display screen displays a picture of a video input source; acquiring a plurality of continuous video frame images of the video input source; and respectively fusing the video frame images with the lamp point state information to obtain a plurality of display screen monitoring images for monitoring the display screen.
According to the technical scheme, the plurality of video frame images are fused with the lamp point state information respectively, so that the plurality of display screen monitoring images can be directly obtained and displayed on the computer, the operation difficulty of monitoring is reduced, and the problem that a camera needs to be additionally erected on the monitoring display screen is solved. The problem of outdoor camera work unstability and because of the camera shoots and receive influences such as weather illumination and lead to shooting the effect poor is further solved, monitoring effect and control reliability have been promoted.
In an embodiment of the present invention, the obtaining of the lamp point state information when the display screen displays the picture of the video input source specifically includes: acquiring the lamp point state information when the display screen displays the picture of the video input source through a display controller connected with the display screen; the acquiring a plurality of consecutive video frame images of the video input source comprises: receiving video data obtained after the display controller processes the video input source; obtaining a plurality of continuous video frame images according to the video data; the lamp point state information comprises lamp point coordinate data of a plurality of lamp points on the display screen and lamp point state data of the plurality of lamp points corresponding to the lamp point coordinate data.
In an embodiment of the present invention, the obtaining, by fusing the video frame images with the light point state information, a display screen monitoring image for monitoring the display screen includes: and according to the lamp point state data in the lamp point state information of the target lamp point in the plurality of lamp points, carrying out fusion processing on the pixel data of the target pixel corresponding to the target lamp point in the target video frame image in the plurality of video frame images to obtain the pixel data of the pixel corresponding to the target pixel in the target display screen monitoring image in the plurality of display screen monitoring images.
In one embodiment of the present invention, the lamp status data includes non-display fault data, partial display fault data, and full display fault data; the obtaining, according to the lamp point state data in the lamp point state information of the target lamp point in the plurality of lamp points, pixel data of a target pixel corresponding to the target lamp point in the target video frame image in the plurality of video frame images by fusion processing to obtain pixel data of a pixel corresponding to the target pixel in the target display screen monitoring image in the plurality of display screen monitoring images includes: when the lamp point state data of the target lamp point is no display fault data, taking the pixel data of the target pixel of the target video frame image as the pixel data of the pixel corresponding to the target pixel on the target display screen monitoring image; when the lamp point state data of the target lamp point is full display fault data, taking preset pixel data representing full display faults as pixel data of pixels corresponding to the target pixels on the target display screen monitoring image; and when the lamp point state data of the target lamp point is partial display fault data, fusing the pixel data of the target pixel of the target video frame image and the partial display fault data according to the partial display fault data, and taking the fused pixel data as the pixel data of the pixel corresponding to the target pixel on the target display screen monitoring image.
The lamp point state data mentioned in the technical scheme comprises non-display fault data, partial display fault data and full display fault data; and according to the different acquired lamp point state data, the pixel data obtained after fusion is different. Therefore, the monitoring reliability can be improved by directly acquiring the lamp point state data of each lamp point on the display screen compared with the mode of adding an external camera to observe the operation effect of the display screen, further, the monitoring picture effect is improved, and the display screen is conveniently detected and corrected.
In an embodiment of the present invention, the pixel data includes red component data, green component data, and blue component data, and the partial display failure data includes red bead failure data, green lamp failure data, and blue lamp failure data; the fusing the pixel data of the target pixel of the target video frame image and the partial display fault data according to the partial display fault data, and using the fused pixel data as the pixel data of the pixel corresponding to the target pixel on the target display screen monitoring image comprises: when the partial display fault data is red lamp bead fault data, replacing red component data in pixel data of the target pixel of the target video frame image with preset pixel component data to obtain fused pixel data, and taking the fused pixel data as pixel data of a pixel corresponding to the target pixel on the target display screen monitoring image; when the partial display fault data is green lamp bead fault data, replacing green component data in pixel data of the target pixel of the target video frame image with preset pixel component data to obtain fused pixel data, and taking the fused pixel data as pixel data of a pixel corresponding to the target pixel on the target display screen monitoring image; and when the part of display fault data is blue lamp bead fault data, replacing blue component data in pixel data of the target pixel of the target video frame image with preset pixel component data to obtain fused pixel data, and using the fused pixel data as pixel data of a pixel corresponding to the target pixel on the target display screen monitoring image.
In an embodiment of the present invention, before the performing, according to the lamp point state data in the lamp point state information of the target lamp point in the plurality of lamp points, the fusion processing on the pixel data of the target pixel corresponding to the target lamp point in the target video frame image in the plurality of video frame images to obtain the pixel data of the pixel corresponding to the target pixel in the target display screen monitoring image in the plurality of display screen monitoring images, the method further includes: and performing pixel disassembly on the target video frame image according to the lamp point coordinate data in the lamp point state information of the plurality of lamp points to obtain pixel data of a plurality of pixels of the target video frame image corresponding to the plurality of lamp points respectively.
In an embodiment of the present invention, the obtaining of the lamp point state information when the display screen displays the picture of the video input source specifically includes: and acquiring the lamp point state information according to a control instruction or a preset frequency.
On the other hand, a display screen monitoring apparatus provided in an embodiment of the present invention is configured to implement the foregoing display screen monitoring method and includes: the lamp point state information acquisition module is used for acquiring lamp point state information when the display screen displays the picture of the video input source; the video frame image acquisition module is used for acquiring a plurality of continuous video frame images of the video input source; and the image information fusion module is used for respectively fusing the video frame images with the lamp point state information to obtain a plurality of display screen monitoring images for monitoring the display screen.
According to the technical scheme, the lamp point state information and the video frame image in the video data output from the video input source are fused, the monitoring picture of the display screen is directly obtained and displayed on the computer, the operation difficulty of monitoring is reduced, and the problem that a camera needs to be additionally erected for monitoring the display screen is solved. The problem of outdoor camera work unstability and because of the camera shoots and receive influences such as weather illumination and lead to shooting the effect poor is further solved, monitoring effect and control reliability have been promoted.
In another aspect, an embodiment of the present invention provides a display screen monitoring system, including: a computer; the display controller is connected with the computer; the display screen is connected with the display controller; wherein the computer is to: the method comprises the steps of obtaining lamp point state information when a display screen displays a picture of a video input source through the display controller, receiving video data obtained after the display controller processes the video input source through the display controller, obtaining a plurality of continuous video frame images according to the video data, and fusing the plurality of video frame images with the lamp point state information respectively to obtain a plurality of display screen monitoring images for monitoring the display screen.
According to the technical scheme, the video frame image transmitted from the display controller and the lamp point state information of the video frame image when the video frame image is displayed on the display screen are acquired through the computer, the display screen monitoring image is fused, namely, the monitoring device does not need to be added, the monitoring image of the display screen can be acquired at the computer end, the equipment cost, the installation cost and the maintenance cost of erecting equipment are saved, and the operation difficulty of monitoring is reduced.
In one embodiment of the invention, the display controller comprises a programmable logic device, an embedded processor and a microcontroller, wherein the programmable logic device is connected with the embedded processor, and the microcontroller is respectively connected with the programmable logic device and the embedded processor; the programmable logic device is used for processing the video input source to obtain the video data and sending the video data to the embedded processor; the embedded processor receives the lamp state information from the display screen when the display screen displays the picture of the video input source through the microcontroller, and outputs the lamp state information and the video data to the computer.
In another aspect, an embodiment of the present invention provides an embedded processor applied to a display controller, where the display controller further includes a programmable logic device and a microcontroller, the programmable logic device is connected to the embedded processor, and the microcontroller is respectively connected to the programmable logic device and the embedded processor; the embedded processor includes: the video data acquisition module is used for acquiring a first control instruction, transmitting the first control instruction to the programmable logic device and receiving video data output by the programmable logic device according to the first control instruction, wherein the video data is obtained by processing a video input source by the programmable logic device; the video data output module is used for outputting the video data; the lamp point state information acquisition module is used for acquiring a second control instruction, transmitting the second control instruction to a display screen connected with the display controller through the microcontroller and receiving lamp point state information when the display screen outputs a picture of the video input source according to the second control instruction, wherein the picture of the video input source is obtained by processing the video input source through the programmable logic device and is output to the display screen; and the lamp point state information transmission module is used for outputting the lamp point state information.
From the above, the technical solutions of the embodiments of the present invention may have one or more of the following advantages: by fusing the lamp point state information when the display screen displays the picture of the video input source and the continuous multiple video frame images from the video input source, the monitoring picture of the display screen can be directly obtained and displayed on a computer, the equipment cost, the installation cost and the maintenance cost of the equipment are saved, the operation difficulty of monitoring is reduced, and the problem that the monitoring system in the prior art needs to additionally erect a camera is solved. The problem of outdoor camera work unstability and because of the camera shoots and receive influences such as weather illumination and lead to shooting the effect poor is further solved, monitoring effect and control reliability have been promoted. Furthermore, the lamp point state data of each lamp point on the display screen is directly acquired, and compared with the situation that an external camera is added to observe the operation effect of the display screen, the reliability of monitoring can be improved, the effect of monitoring pictures is improved, and the display screen is conveniently detected and corrected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a display screen monitoring method according to a first embodiment of the present invention.
Fig. 2 is a detailed flowchart of step 13 in fig. 1.
Fig. 3 is a detailed flowchart of step 32 in fig. 2.
Fig. 4 is a detailed flowchart of step 323 in fig. 3.
Fig. 5 is a schematic structural diagram of a display screen monitoring system according to a first embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a display controller in a display screen monitoring system according to a first embodiment of the present invention.
FIG. 7 is a diagram illustrating a first video frame image displayed on a display screen according to a first embodiment of the present invention.
Fig. 8 is a schematic view illustrating lamp status information of each lamp on the display screen according to the first embodiment of the present invention.
Fig. 9 is an enlarged schematic view of the lamp stand state information in fig. 8.
Fig. 10 is a schematic view of a monitoring image of the first video frame image displayed at the computer end in fig. 7.
Fig. 11 is a schematic block diagram of a display screen monitoring apparatus according to a second embodiment of the present invention.
Fig. 12 is a schematic structural diagram of a display screen monitoring system according to a third embodiment of the present invention.
Fig. 13 is a schematic structural diagram of a computer-readable storage medium according to a fourth embodiment of the present invention.
Fig. 14 is a block diagram of an embedded processor according to a fifth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific implementation, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
[ first embodiment ] A method for manufacturing a semiconductor device
As shown in fig. 1, an embodiment of the present invention provides a display screen monitoring method. The display screen monitoring method comprises the following steps:
s1: acquiring lamp point state information when a display screen displays a picture of a video input source;
s2: acquiring a plurality of continuous video frame images of the video input source;
s3: and respectively fusing the video frame images with the lamp point state information to obtain a plurality of display screen monitoring images for monitoring the display screen.
Therefore, the embodiment of the invention can directly obtain and display a plurality of display screen monitoring images on the computer by fusing the plurality of video frame images with the lamp point state information respectively so as to realize the dynamic monitoring of the display screen, reduce the operation difficulty of the monitoring and solve the problem that the existing monitoring system needs to additionally erect a camera. The problem of outdoor camera work unstability and because of the camera shoots and receive influences such as weather illumination and lead to shooting the effect poor is further solved, monitoring effect and control reliability have been promoted.
Further, the above mentioned obtaining the lamp point state information specifically includes: and acquiring the lamp point state information according to a control instruction or a preset frequency. Therefore, the lamp state information may be acquired by a control command, or may be acquired periodically or aperiodically according to a frequency set as needed. By acquiring the lamp state information of the picture of the video input source, the accurate monitoring image of the picture can be acquired on the display screen by fusing the lamp state information and the video frame image.
In step S1, the light point state information when the display screen displays the picture of the video input source is obtained through a display controller connected to the display screen.
Specifically, step S2 specifically includes, for example: receiving video data obtained after the display controller processes the video input source; and obtaining a plurality of continuous video frame images according to the video data.
Further, the lamp status information includes, for example, lamp coordinate data of a plurality of lamps on the display screen and a plurality of lamp status data corresponding to the lamp coordinate data. The display screen is for example an LED display screen. The plurality of light points are, for example, a plurality of light points on an LED display screen. Wherein, every lamp point is RGB three-colour lamp pearl for example. Specifically, the lamp point coordinate data is used to indicate, for example, the position of the lamp point on the display screen, and includes, for example, a lateral coordinate value and a longitudinal coordinate value. Further, the lamp status data of the plurality of lamps includes, for example, non-display failure data, partial display failure data, and full display failure data. And the non-display fault data represents lamp point state data when none of the three-color lamp beads in the lamp point has display faults (namely the lamp point normally displays). And the full-display fault data represents lamp point state data when three-color lamp beads in the lamp point have display faults (namely all the color lamp beads cannot normally display). And the partial display fault data represents lamp point state data when display faults exist in partial lamp points in the three-color lamp beads (namely partial color lamp beads cannot be normally displayed). Specifically, the partial lamp point display failure may be a red lamp point failure, a green lamp point failure, and a blue lamp point failure. Of course, the plurality of lamp beads on the LED display screen may also be four-color lamp beads or other types of lamp beads, which is not limited in the present invention.
Further, as shown in fig. 2, step S3 includes, for example:
s31: performing pixel disassembly on a target video frame image in the plurality of video frame images according to the lamp point coordinate data in the lamp point state information of the plurality of lamp points to obtain pixel data of a plurality of pixels of the target video frame image corresponding to the plurality of lamp points respectively;
s32: and according to the lamp point state data in the lamp point state information of the target lamp point in the plurality of lamp points, carrying out fusion processing on the pixel data of the target pixel corresponding to the target lamp point in the target video frame image to obtain the pixel data of the pixel corresponding to the target pixel in the target display screen monitoring image in the plurality of display screen monitoring images.
Specifically, the resolution of the picture displaying the video input source on the display screen may be the same as or different from the resolution of the target video frame image in the plurality of consecutive video frame images of the video input source obtained by the computer terminal. In step S31, the correspondence between the pixels and the light points may be that one light point corresponds to one pixel, or that one light point corresponds to a plurality of pixels, or even other correspondence manners, which may be determined according to actual situations.
Further, as shown in fig. 3, step S32 includes, for example:
s321: when the lamp point state data of the target lamp point is no display fault data, taking the pixel data of the target pixel of the target video frame image as the pixel data of the pixel corresponding to the target pixel on the target display screen monitoring image;
s322: when the lamp point state data of the target lamp point is full display fault data, taking preset pixel data representing full display faults as pixel data of pixels corresponding to the target pixels on the target display screen monitoring image;
s323: and when the lamp point state data of the target lamp point is partial display fault data, fusing the pixel data of the target pixel of the target video frame image and the partial display fault data according to the partial display fault data, and taking the fused pixel data as the pixel data of the pixel corresponding to the target pixel on the target display screen monitoring image.
The preset pixel data representing the full display failure may be, for example, black data (0,0,0), white data (255 ), or other color data, and may be set by itself. In the following example of the first embodiment of the present invention, the description will be given taking an example in which the full-display failure preset pixel data is represented as black data.
Further, the pixel data mentioned in step S321, step S322, step S323 include, for example, red component data (R), green component data (G), and blue component data (B), and may further include even other color component data such as white, yellow, and the like. Correspondingly, the partial display fault data includes, for example, red lamp bead fault data, green lamp spot fault data, and blue lamp spot fault data. Specifically, as shown in fig. 4, step S323 includes, for example:
s3231: when the partial display fault data is red lamp bead fault data, replacing red component data in pixel data of the target pixel of the target video frame image with preset pixel component data to obtain fused pixel data, and taking the fused pixel data as pixel data of a pixel corresponding to the target pixel on the target display screen monitoring image;
s3232: when the partial display fault data is green lamp bead fault data, replacing green component data in pixel data of the target pixel of the target video frame image with preset pixel component data to obtain fused pixel data, and taking the fused pixel data as pixel data of a pixel corresponding to the target pixel on the target display screen monitoring image; and
s3233: and when the part of display fault data is blue lamp bead fault data, replacing blue component data in pixel data of the target pixel of the target video frame image with preset pixel component data to obtain fused pixel data, and taking the fused pixel data as pixel data of a pixel corresponding to the target pixel on the target display screen monitoring image.
Taking the preset pixel data as black data as an example, the three preset pixel component data mentioned in the step S3231, the step S3232 and the step S3233 are all 0. Of course, the preset pixel component data of the three color component data may also be different, that is, different color component data replacement processing is adopted for different portions of the fault data displayed by the lamp points, and the invention is not limited thereto.
In this way, the lamp state data mentioned in the above scheme includes non-display fault data, partial display fault data, and full display fault data; and according to the different acquired lamp point state data, the pixel data obtained after fusion is different. Therefore, the monitoring reliability can be improved by directly acquiring the lamp point state data of each lamp point on the display screen compared with the mode of adding an external camera to observe the operation effect of the display screen, further, the monitoring picture effect is improved, and the display screen is conveniently detected and corrected.
In order to facilitate understanding of the present invention, the display screen monitoring method of the present embodiment will be described in detail below with reference to fig. 5 to 10.
The display screen monitoring method provided by the invention is suitable for a display screen monitoring system without a camera, and the monitoring of the display screen can be realized without additionally erecting the camera. Typically, as shown in fig. 5, the display screen monitoring system 20 includes, for example: a computer 210, a display controller 220, and a display screen 230. Wherein the display controller 220 is connected between the computer 210 and the display screen 230. The display controller 220 receives a video input source through a video input interface (not shown). The video input interface may be, for example, a common standard video interface, such as an HDMI interface, a DP interface, an SDI interface, a DVI interface, etc., or may be other interfaces capable of transmitting video data, which is not limited in this respect. As shown in fig. 5, the display controller 220 includes, for example, a programmable logic device, a microcontroller, and an embedded processor. The Programmable logic device is, for example, a Field Programmable Gate Array (FPGA). A microcontroller such as an MCU and an embedded processor such as an ARM processor. Specifically, the FPGA is connected to the ARM through, for example, a network communication protocol. The MCU is connected with the FPGA and the ARM through a serial port communication protocol. The FPGA is mainly configured to process a received video input source into a plurality of pictures and transmit the pictures to the display screen 230 for display through a picture transmission link, and is also configured to process the video input source into video data, such as streaming media data, and transmit the video data to the embedded processor, so that the embedded processor sends the video data to the computer 210. The display screen 230 is, for example, an LED display screen or other display screen. The display screen 230 includes, for example, a display control card (also called a receiving card or a scanning card) and a display module connected to the display control card. The display module is for example one or more LED lamp panels, is provided with at least one lamp pearl (or called lamp point) on every LED lamp panel. Each light point for example comprises LED lights of different colors, for example a red LED, a green LED and a blue LED, even a white LED, a yellow LED, etc. The display control card of the display screen 230 is configured to obtain the light point state information of each light point of the display screen, and send the light point state information to the display controller 220 through a control link, such as an ethernet line, so that the display controller 220 sends the light point state information of each light point to the computer 210. The control link and the picture transmission link are, for example, ethernet transmission lines, optical fiber transmission lines, or other transmission lines, which is not limited by the present invention.
In addition, in another embodiment of the present invention, as shown in fig. 6, the display controller 220 may be, for example, a card-type display controller, and specifically, the display controller 220 may further include, for example, an input daughter card and an output daughter card. The input sub card is connected with the FPGA and the MCU, and the output sub card is connected with the FPGA and the MCU. The input daughter card also comprises a programmable logic device connected with the MCU, for example, and is used for receiving the video input source, performing preliminary preprocessing on the video input source, transmitting the video data after the preprocessing to the FPGA for image processing, and transmitting the image after the image processing to the output daughter card. The output daughter card also includes a programmable logic device connected to the MCU, for example, and is used to post-process the image processed and output the image to the display screen 230 for display. The FPGA also transmits the video data after image processing to the ARM for the ARM to output to the computer 210. The output daughter card may also receive the light point status data sent by the display screen 230 and transmit the light point status data to the ARM through the MCU, so that the ARM can output the light point status data to the computer 210. Compared with the existing display controller, the embodiment of the invention arranges the ARM with stronger computing capability in the display controller 220 and forms the control module together with the MCU, so that the computer 210 can control the equipment more comprehensively and can acquire more equipment information and states such as lamp state data. Specifically, the ARM includes, for example, two parts, namely an embedded application software and an operating system, where the embedded application software refers to, for example, application-level software that runs on a device and is mainly used for completing a service function, and is strongly related to a service; the operating system is an embedded operating system, and comprises the operating system itself such as Linux and the encapsulation of hardware capability in the form of service or library. In this architecture, data transmission can be performed between the FPGA and the ARM through a network communication protocol, for example, the FPGA transmits video data obtained by processing a video input source to the ARM through the network communication protocol, and the video data is transmitted back to the computer 210 by the ARM.
According to the display screen monitoring system provided by the technical scheme, the computer is used for acquiring the continuous video frame images from the video input source transmitted by the display controller and the lamp point state information when the picture of the video input source is displayed on the display screen, and the display screen monitoring images are combined, so that the monitoring images of the display screen can be acquired at the computer end without increasing monitoring equipment, the equipment cost, the installation cost and the maintenance cost of erecting equipment are saved, and the operation difficulty of monitoring is reduced.
It should be noted that the display screen monitoring method provided by the present invention is specifically applied to the computer 210 of the display screen monitoring system 20, such as display screen monitoring software, and the specific implementation process is as follows.
First, the FPGA of the display controller 220 receives a video input source.
Then, the FPGA processes the video input source to obtain video data, and processes the video data into a picture that can be displayed by the display screen 230, where the method in the prior art can be used for implementation, and the specific process is not described again. In addition, when the display screen 230 displays a screen, the display screen is checked to obtain the lamp status information of each lamp on the display screen, and the lamp status information is transmitted to the display controller 220, so that the display controller 220 transmits the lamp status information to the computer 210. It should be noted that the spot inspection herein can be performed by using a mature technology in the prior art, and is not described herein again. Specifically, the lamp status information may be, for example, lamp coordinate data of the lamp on the display screen 210 and lamp status data of the plurality of lamps corresponding to the lamp coordinate data. The lamp point coordinate data includes, for example, an abscissa value and an ordinate value. The lamp status data, for example, includes status data of three color LEDs of each lamp, which may be represented by three-digit binary numbers, each of which is represented by 0 and 1, 1 represents that the color LED is not faulty (i.e., normally displayed), and 0 represents that the color LED is faulty (i.e., not normally displayed). For example, 000 indicates that all LEDs of the lamp have failed, that is, 000 indicates that the failure data is fully displayed; 111 indicates that all the LEDs of the lamp point have no fault, namely, the lamp point can normally display, and 111 indicates no display fault data; 011 shows that the red LED of the lamp point has a fault, the green LED and the blue LED display normally, and 011 shows fault data for the red lamp point; 101, indicating that the green LED of the lamp point has a fault, and displaying the red LED and the blue LED normally, wherein 101 is used for displaying fault data for the green lamp point; 110 indicates that the blue LED of the light spot has failed and that the green and red LEDs are displaying normally, then 110 displays failure data for the blue light spot. And the red lamp point display fault data, the green lamp point display fault data and the blue lamp point display fault data belong to partial display fault data. Of course, the partial display failure data also includes data when two LEDs failed at the same time, such as 010,100,001. Of course, LEDs with colors of white, yellow, etc. may also be included, and then the lamp point status data may be represented by more binary digits in a similar way, which is not limited by the present invention.
In addition, the FPGA transmits the video data to the ARM via, for example, a network communication protocol, for the ARM to transmit the video data to the computer 210. The computer 210 processes the video data into a plurality of video frame images. Because the resolution of the computer is different from that of the display screen, the resolutions of the plurality of video frame images and the pictures displayed on the display screen are the same or different, for example, in a multiple relation.
The computer 210 fuses the target video frame images of the plurality of video frame images with the light point state information, respectively, to obtain a plurality of display screen monitoring images for monitoring the display screen 230. The computer can enable a user to see the dynamic monitoring picture of the display screen at the computer terminal by playing the plurality of display screen monitoring images in sequence. For example, FIG. 7 shows a frame of a video input source displayed on a display screen. The size (or resolution) of the frame is 30 (rows) × 30 (columns), i.e. it is displayed by 900 light points. The display control card in the display screen 230 performs a light point state check (or called a point check) on each light point when the screen is displayed, and obtains light point state information of each light point. As shown in fig. 8, it shows the lamp status information of 900 lamps when the display screen displays the screen. Each of the lamp state information includes lamp coordinate data and lamp state data corresponding to the lamp coordinate data. More specifically, as shown in fig. 9, the coordinate data of 900 light points in the first video frame image is, for example, two-dimensional coordinates, the coordinate data of the first row of light points is, for example, (0,0) to (0,29), the coordinate data of the second row of light points is, (1,0) to (1,29), and so on. The lamp status data includes, for example, non-display failure data, partial display failure data, and full display failure data. And the display control card transmits the obtained lamp point state information to the display controller. The display controller 220 transmits the lamp state information to the computer 210. Therefore, the computer acquires the lamp point state information when the picture of the video input source is displayed.
Specifically, the computer 210 receives video data resulting from the display controller 220 processing the video input source. The computer 210 obtains a plurality of video frame images in succession based on the received video data. The computer 210 uses each of the plurality of video frame images as a target video frame image, and processes, for example, fuses, the lamp status information and the target video frame image to obtain a target display screen monitoring image, so that a plurality of display screen monitoring images can be obtained. Specifically, each display screen monitoring image is obtained by modifying, by the computer 210, pixel data of a pixel corresponding to a failed lamp point in the target video frame image according to the failed lamp point state information in the lamp point state information, so as to obtain a modified target video frame image, that is, a target display screen monitoring image.
In other embodiments of the present invention, the computer 210 may further disassemble the target video frame image according to the light point state information, such as the light point coordinate data, so as to obtain the pixel data of a plurality of pixels in the target video frame image. The plurality of pixels respectively correspond to a plurality of light points of a display screen display picture. For example, the resolution of the frame of the display video input source shown in fig. 7 is 30 × 30, and when the resolution of the target video frame image is also 30 × 30, the computer 210 divides the target video frame image into 900 pixels with the resolution of 30 × 30, so as to obtain 900 sets of pixel data, where one pixel corresponds to one light point. When the pixels of the target video frame image are 30 × 60, the computer 210 disassembles the target video frame image into 900 pixels in total, 30 × 30, according to the resolution of the display screen displaying the picture of the video input source, that is, two pixels of the target video frame image correspond to one pixel of the display screen displaying the picture of the video input source, that is, two pixels of the target video frame image correspond to one light point on the display screen 230. Of course, the resolution of the target video frame image may also be other values, and the embodiment of the present invention is not limited thereto. Then, the computer 210 performs a fusion process on the pixel data and the light point state information in the target video frame image. Specifically, the computer 210 performs fusion processing on pixel data of a target pixel in a target video frame image corresponding to a target lamp point in the video frame image, on a lamp point-by-lamp point basis, according to lamp point coordinate data in lamp point state information of the target lamp point in the plurality of lamp points. For convenience of understanding, taking the pixel data of the target pixel in the target video frame image as (100,100,100) as an example, when the lamp status data of the target lamp corresponding to the target pixel is the display failure free data (for example, the lamp status data is 111), that is, all the LEDs indicating the target lamp are normally displayed, the pixel data (100,100,100) of the target pixel is taken as the pixel data of the pixel corresponding to the target pixel in the target display monitor image. When the lamp status data of the target lamp point is full lamp fault data (for example, the lamp status data is 000), that is, it indicates that all LEDs of the target lamp point have display faults and cannot be normally displayed, the pixel data of the pixel corresponding to the target pixel in the target display screen monitoring image is set as the preset pixel data. Specifically, the preset pixel data of the full light point display failure here is the pure black data (0,0, 0). Of course, the preset pixel data of the full light point display failure may be other color data such as pure white data (255 ), and the present invention is not limited thereto. When the lamp state data of the target lamp is the partial lamp fault data, the computer 210 uses the pixel data obtained by fusing the pixel data of the target pixel of the target video frame image according to the partial display fault data as the pixel data of the pixel corresponding to the target pixel in the target display screen monitoring image. For example, when part of the lamp failure data is red bead failure data (e.g. 011), the computer replaces the red pixel component data in the pixel data of the target pixel in the target video frame image with the preset pixel component data such as 0, and keeps the other color component data unchanged, so as to obtain the fused pixel data, that is, the fused pixel data is (0, 100), and (0, 100) is used as the pixel data of the pixel corresponding to the target display pixel in the target display screen monitoring image. For another example, when part of the lamp point failure data is green lamp bead failure data, the computer 210 replaces the green pixel component data in the target pixel data on the target video frame image with the preset pixel component data such as 0, and keeps the other color pixel component data unchanged, so as to obtain the fused pixel data, that is, the fused pixel data is (100,0, 100). For example, when the partial lamp failure data is the blue bead failure data, the computer 210 replaces the blue pixel component data in the pixel data of the target pixel on the target video frame image with the preset pixel component data such as 0, and keeps the other color pixel component data unchanged, so as to obtain the fused pixel data, that is, the fused pixel data is (100, 0). When the fault data of part of the lamp points is the state data when two LEDs or even a plurality of LEDs have faults, the fault data can be obtained by adopting similar methods to carry out fusion and replacement processing, and the target display screen monitors the pixel data of the pixels corresponding to the image. And traversing the processing process for each target pixel in the target video frame image to obtain the pixel data of each fused pixel. Finally, as shown in fig. 10, the computer 210 merges the fused pixel data of each pixel according to the lamp point coordinate data in the lamp point state information of each lamp point corresponding to each pixel, so as to obtain the target display screen monitoring image. And sequentially processing each video frame image of the plurality of video frame images by adopting the same method as the method so as to obtain a plurality of display screen monitoring images. Finally, the computer 210 sequentially outputs a plurality of monitor images of the display screen, for example, in the order of installing the video frame images, so that a dynamic monitor image of the display screen can be displayed at the computer end, and the monitor of the computer 210 on the display screen 230 is realized.
In summary, in the embodiments of the present invention, by performing fusion processing on the light point state information when the display screen displays the picture of the video input source and the continuous multiple video frame images from the video input source, the display screen monitoring picture can be directly obtained and played on the computer, so that the equipment cost, the installation cost and the maintenance cost of the equipment are saved, the operation difficulty of monitoring is reduced, and the problem that the monitoring display screen needs to be additionally provided with a camera is solved. The problem of outdoor camera work unstability and because of the camera shoots and receive influences such as weather illumination and lead to shooting the effect poor is further solved, monitoring effect and control reliability have been promoted. Furthermore, the lamp point state data of each lamp point on the display screen is directly acquired, and compared with the situation that an external camera is added to observe the operation effect of the display screen, the reliability of monitoring can be improved, the effect of monitoring pictures is improved, and the display screen is conveniently detected and corrected.
[ second embodiment ]
As shown in fig. 11, a second embodiment of the present invention provides a display screen monitoring apparatus 30. The display monitoring device 30 includes, for example: a light point state information acquisition module 31, a video frame image acquisition module 32 and an image information fusion module 33.
Specifically, the light point state information obtaining module 31 is configured to obtain the light point state information when the display screen displays the picture of the video input source. The video frame image acquiring module 32 is configured to acquire a plurality of consecutive video frame images of the video input source. The image information fusion module 33 is configured to fuse the plurality of video frame images with the light point state information, respectively, to obtain a plurality of display screen monitoring images for monitoring the display screen.
The modules in the monitor device 30 in the present embodiment can be integrated into the computer 210 in the monitor system 20 in the previous embodiment, and the specific working process and technical effect between the modules are as described in the first embodiment.
[ third embodiment ]
As shown in fig. 12, a third embodiment of the present invention provides a display screen monitoring system 40.
The display screen monitoring system 40 includes, for example, a processor 41 and a memory 42 connected to the processor 41. The memory 42 may be, for example, a non-volatile memory, on which the computer program 43 is stored. The processor 41 may be, for example, a central processing unit or the like. The processor 41 executes the computer program 43 to execute the display screen monitoring method provided in the foregoing first embodiment.
For the specific working process and technical effects of the display screen monitoring system 40 in this embodiment, reference is made to the description of the first embodiment, and details are not repeated here.
[ fourth example ] A
As shown in fig. 13, a computer-readable storage medium 50 according to a fourth embodiment of the present invention stores computer-executable instructions 51. The computer-readable storage medium 50 is, for example, a non-volatile memory, such as including: magnetic media (e.g., hard disks, floppy disks, and magnetic tape), optical media (e.g., CDROM disks and DVDs), magneto-optical media (e.g., optical disks), and hardware devices specially constructed for storing and executing computer-executable instructions (e.g., Read Only Memories (ROMs), Random Access Memories (RAMs), flash memories, etc.). The computer-readable storage medium 50 may execute the computer-executable instructions 51 by one or more processors or processing devices to implement the display screen monitoring method as provided in the foregoing first embodiment.
[ fifth embodiment ]
As shown in fig. 14, a fifth embodiment of the present invention provides an embedded processor 60. The embedded processor 60 can be applied to a display controller, for example, the display controller can be the display controller 220 in the first embodiment, and the embedded processor 60 can also be the embedded processor in the first embodiment. As shown in fig. 5, the display controller further includes a programmable logic device and a microcontroller, the programmable logic device is connected to the embedded processor, and the microcontroller is connected to the programmable logic device and the embedded processor respectively; the embedded processor 60 includes, for example: a video data acquisition module 61, a video data transmission module 62, a light point state information acquisition module 63, and a light point state information transmission module 64. The video data acquisition module 61, the video data transmission module 62, the light point state information acquisition module 63, and the light point state information transmission module 64 may be integrated into embedded application software of the embedded processor 60, for example.
Specifically, the video data obtaining module 61 is configured to obtain a first control instruction, transmit the first control instruction to the programmable logic device, and receive video data output by the programmable logic device according to the first control instruction, where the video data is obtained by processing a video input source by the programmable logic device. And a video data output module 62, configured to output the video data. And a lamp point state information obtaining module 63, configured to obtain a second control instruction, transmit the second control instruction to a display screen connected to the display controller through the microcontroller, and receive lamp point state information when the display screen outputs a picture of the video input source according to the second control instruction, where the picture of the video input source is obtained by processing the video input source by the programmable logic device and is output to the display screen. And a lamp status information transmission module 64 for outputting the lamp status information.
It should be noted that the first control instruction and/or the second control instruction herein are, for example, sent by the computer 210 in the foregoing first embodiment, and are used to acquire the light point state information and the video data of the video input source when the display screen displays the picture of the video input source.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and the technical solutions of the embodiments can be arbitrarily combined and collocated without conflict between technical features and structural contradictions, which do not violate the purpose of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and the actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A display screen monitoring method is characterized by comprising the following steps:
acquiring lamp point state information when a display screen displays a picture of a video input source;
acquiring a plurality of continuous video frame images of the video input source;
and respectively fusing the video frame images with the lamp point state information to obtain a plurality of display screen monitoring images for monitoring the display screen.
2. The display screen monitoring method of claim 1,
the obtaining of the lamp point state information when the display screen displays the picture of the video input source specifically includes:
acquiring the lamp point state information when the display screen displays the picture of the video input source through a display controller connected with the display screen;
the acquiring a plurality of consecutive video frame images of the video input source comprises:
receiving video data obtained after the display controller processes the video input source;
obtaining a plurality of continuous video frame images according to the video data;
the lamp point state information comprises lamp point coordinate data of a plurality of lamp points on the display screen and lamp point state data of the plurality of lamp points corresponding to the lamp point coordinate data.
3. The display screen monitoring method of claim 2, wherein the obtaining of the plurality of display screen monitoring images for monitoring the display screen by fusing the plurality of video frame images with the lamp spot state information, respectively, comprises:
and according to the lamp point state data in the lamp point state information of the target lamp point in the plurality of lamp points, carrying out fusion processing on the pixel data of the target pixel corresponding to the target lamp point in the target video frame image in the plurality of video frame images to obtain the pixel data of the pixel corresponding to the target pixel in the target display screen monitoring image in the plurality of display screen monitoring images.
4. The display screen monitoring method of claim 3, wherein the lamp status data comprises no display fault data, partial display fault data, and full display fault data; the obtaining, according to the lamp point state data in the lamp point state information of the target lamp point in the plurality of lamp points, pixel data of a target pixel corresponding to the target lamp point in the target video frame image in the plurality of video frame images by fusion processing to obtain pixel data of a pixel corresponding to the target pixel in the target display screen monitoring image in the plurality of display screen monitoring images includes:
when the lamp point state data of the target lamp point is no display fault data, taking the pixel data of the target pixel of the target video frame image as the pixel data of the pixel corresponding to the target pixel on the target display screen monitoring image;
when the lamp point state data of the target lamp point is full display fault data, taking preset pixel data representing full display faults as pixel data of pixels corresponding to the target pixels on the target display screen monitoring image; and
and when the lamp point state data of the target lamp point is partial display fault data, fusing the pixel data of the target pixel of the target video frame image and the partial display fault data according to the partial display fault data, and taking the fused pixel data as the pixel data of the pixel corresponding to the target pixel on the target display screen monitoring image.
5. The display screen monitoring method of claim 4, wherein the pixel data includes red component data, green component data, and blue component data, and the partial display failure data includes red lamp bead failure data, green lamp spot failure data, and blue lamp spot failure data; the fusing the pixel data of the target pixel of the target video frame image and the partial display fault data according to the partial display fault data, and using the fused pixel data as the pixel data of the pixel corresponding to the target pixel on the target display screen monitoring image comprises:
when the partial display fault data is red lamp bead fault data, replacing red component data in pixel data of the target pixel of the target video frame image with preset pixel component data to obtain fused pixel data, and taking the fused pixel data as pixel data of a pixel corresponding to the target pixel on the target display screen monitoring image;
when the partial display fault data is green lamp bead fault data, replacing green component data in pixel data of the target pixel of the target video frame image with preset pixel component data to obtain fused pixel data, and taking the fused pixel data as pixel data of a pixel corresponding to the target pixel on the target display screen monitoring image; and
and when the part of display fault data is blue lamp bead fault data, replacing blue component data in pixel data of the target pixel of the target video frame image with preset pixel component data to obtain fused pixel data, and taking the fused pixel data as pixel data of a pixel corresponding to the target pixel on the target display screen monitoring image.
6. The method according to claim 3, wherein before the fusing the pixel data of the target pixel corresponding to the target lamp point in the target video frame image in the plurality of video frame images according to the lamp point state data in the lamp point state information of the target lamp point in the plurality of lamp points to obtain the pixel data of the pixel corresponding to the target pixel in the target display screen monitoring image in the plurality of display screen monitoring images, the method further comprises:
and performing pixel disassembly on the target video frame image according to the lamp point coordinate data in the lamp point state information of the plurality of lamp points to obtain pixel data of a plurality of pixels of the target video frame image corresponding to the plurality of lamp points respectively.
7. The method for monitoring the display screen according to claim 1, wherein the obtaining of the lamp point state information when the display screen displays the picture of the video input source specifically comprises:
and acquiring the lamp point state information according to a control instruction or a preset frequency.
8. A display screen monitoring apparatus for implementing the display screen monitoring method according to any one of claims 1 to 7 and comprising:
the lamp point state information acquisition module is used for acquiring lamp point state information when the display screen displays the picture of the video input source;
the video frame image acquisition module is used for acquiring a plurality of continuous video frame images of the video input source; and
and the image information fusion module is used for respectively fusing the video frame images with the lamp point state information to obtain a plurality of display screen monitoring images for monitoring the display screen.
9. A display screen monitoring system, comprising:
a computer;
the display controller is connected with the computer;
the display screen is connected with the display controller;
wherein the computer is to: the method comprises the steps of obtaining lamp point state information when a display screen displays a picture of a video input source through the display controller, receiving video data obtained after the display controller processes the video input source through the display controller, obtaining a plurality of continuous video frame images according to the video data, and fusing the plurality of video frame images with the lamp point state information respectively to obtain a plurality of display screen monitoring images for monitoring the display screen.
10. The display monitoring system of claim 9, wherein the display controller comprises a programmable logic device, an embedded processor, and a microcontroller, the programmable logic device being connected to the embedded processor, the microcontroller being connected to the programmable logic device and the embedded processor, respectively; the programmable logic device is used for processing the video input source to obtain the video data and sending the video data to the embedded processor; the embedded processor receives the lamp state information from the display screen when the display screen displays the picture of the video input source through the microcontroller, and outputs the lamp state information and the video data to the computer.
11. An embedded processor is applied to a display controller and is characterized in that the display controller further comprises a programmable logic device and a microcontroller, the programmable logic device is connected with the embedded processor, and the microcontroller is respectively connected with the programmable logic device and the embedded processor; the embedded processor includes:
the video data acquisition module is used for acquiring a first control instruction, transmitting the first control instruction to the programmable logic device and receiving video data output by the programmable logic device according to the first control instruction, wherein the video data is obtained by processing a video input source by the programmable logic device;
the video data output module is used for outputting the video data;
the lamp point state information acquisition module is used for acquiring a second control instruction, transmitting the second control instruction to a display screen connected with the display controller through the microcontroller and receiving lamp point state information when the display screen outputs a picture of the video input source according to the second control instruction, wherein the picture of the video input source is obtained by processing the video input source through the programmable logic device and is output to the display screen; and
and the lamp point state information transmission module is used for outputting the lamp point state information.
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