CN112637664A - Video review method, video output card and card insertion type video processing equipment - Google Patents
Video review method, video output card and card insertion type video processing equipment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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Abstract
The embodiment of the invention discloses a video review method, a video output card and a card-inserted video processing device, wherein the video review method comprises the following steps: outputting a review picture to a second video output card through a review output channel for zooming and then outputting and displaying; outputting the screen-up picture to the target display screen through the screen-up output channel so as to display the screen-up picture by the target display screen; the review picture comprises all image data corresponding to the upper screen picture and boundary image data corresponding to the target boundary of the upper screen picture. The video review method disclosed by the embodiment of the invention can avoid the problem that the last output review spliced picture has a splicing seam when a plurality of video output cards are used for splicing and displaying, and improve the video review effect.
Description
Technical Field
The invention relates to the technical field of video processing, in particular to a video review method, a video output card and a card-inserting type video processing device.
Background
At present, in the process of using a video processing device, such as a video splicer, in a field, not only a picture being displayed by an LED display screen, i.e., an upper screen picture, needs to be transmitted back to a director to determine whether the display content is normal, but also, for example, the upper screen picture needs to be used as a review picture and displayed on a scene on a stage through a review channel to play a role of prompting actors and a stage host on the stage, or the upper screen picture needs to be used as a review picture and transmitted onto an auxiliary display screen of a meeting place through the review channel, or the upper screen picture needs to be used as a review picture and transmitted to scenes such as a meeting place through the review channel to achieve the purpose of extended display.
In the practical application process, the condition that a plurality of video output cards of the video processing equipment are spliced and displayed often occurs, namely, the display picture of the LED display screen is a spliced display picture, and each video output card outputs a part of the content of the spliced display picture.
Therefore, the present invention provides a technical problem to be solved urgently, how to provide a method for avoiding a problem that a last output review mosaic picture has a stitching seam when a plurality of video output cards perform mosaic display, so as to improve a video review effect.
Disclosure of Invention
The embodiment of the invention discloses a video review method, a video review device, a video review system, a video output card, a card-inserted video processing device and a computer readable storage medium, which can avoid the problem of splicing seams of review spliced pictures finally output when a plurality of video output cards are used for splicing and displaying and improve the video review effect.
Specifically, in a first aspect, an embodiment of the present invention discloses a video review method, which is applied to a first video output card of a card-inserted video processing device, where the first video output card is provided with a review output channel and an upper screen output channel corresponding to the review output channel, and the card-inserted video processing device further includes a second video output card electrically connected to the review output channel, and the method includes: outputting a review picture to the second video output card through the review output channel for zooming processing and then outputting and displaying; outputting an upper screen picture to a target display screen through the upper screen output channel so that the target display screen displays the upper screen picture; and the review picture comprises all image data corresponding to the upper screen picture and boundary image data corresponding to the target boundary of the upper screen picture.
In the prior art, when a plurality of video output cards are used for splicing and displaying, the last output back-viewing spliced pictures are incomplete, the problem of splicing seams often exists, and the video back-viewing effect is seriously influenced; according to the video backsight method disclosed by the embodiment of the invention, the backsight pictures including all the image data corresponding to the upper screen picture and the boundary image data corresponding to the target boundary of the upper screen picture are output to the second video output card for backsight processing and then output and display, so that the problem that the last backsight spliced picture output by a plurality of video output cards has a splicing seam when splicing and displaying is carried out can be avoided, the video backsight effect is improved, and the video can be randomly spliced and backsight.
In one embodiment of the present invention, the first video output card further comprises a target data interface, the target data interface being connected to the on-screen output channel; wherein outputting the on-screen picture to the target display screen via the on-screen output channel comprises: and outputting the screen-up picture to the target data interface through the screen-up output channel, so that the target data interface outputs the screen-up picture to the target display screen.
In an embodiment of the present invention, the outputting a review picture to the second video output card via the review output channel for scaling processing and outputting includes: receiving and storing a splicing picture to be displayed of the target display screen; reading at least one part of the spliced picture to be displayed to obtain the back-viewing picture; outputting the review pictures to the second video output card through the review output channel; the outputting of the on-screen picture to the target display screen via the on-screen output channel specifically includes: intercepting the return-to-watch picture based on the interface output resolution of the target data interface to obtain the upper screen picture; and outputting the screen-up picture to the target data interface through the screen-up output channel, so that the target data interface outputs the screen-up picture to a target display screen.
The method comprises the steps of reading at least one part of a spliced picture to be displayed to obtain a backsight picture, and intercepting the backsight picture based on an interface output resolution ratio to obtain an upper screen picture, so that the backsight picture has more boundary image data corresponding to a target boundary than the upper screen picture, and the second video output card can obtain images corresponding to splicing seams when zooming is carried out based on the boundary image data, so that the problem that the splicing seams appear in the backsight spliced picture in the prior art is solved.
In an embodiment of the present invention, the reading at least a part of the to-be-displayed stitched picture to obtain the review picture includes: acquiring the screen body resolution, the display splicing mode, the display position information and the target boundary added value of the target display screen; determining an upper screen picture reading range corresponding to the upper screen picture based on the interface output resolution and the display position information; determining a boundary reading range corresponding to the target boundary of the upper screen picture based on the screen body resolution, the display splicing mode and the target boundary added value; determining a review picture reading range corresponding to the review picture based on the upper screen picture reading range and the boundary reading range; and reading the data corresponding to the spliced picture to be displayed based on the reading range of the review picture to obtain the review picture.
In an embodiment of the present invention, the determining a boundary reading range corresponding to a target boundary of the top screen image based on the screen resolution, the display stitching manner, and the target boundary added value includes: determining the splicing position of the spliced pictures to be displayed based on the display splicing mode and the screen body resolution, and taking the boundary of the upper screen picture adjacent to the splicing position as the target boundary; and determining the boundary reading range based on the target boundary and the target boundary increment value, wherein the data of the spliced picture to be displayed, which corresponds to the boundary reading range, is the boundary image data.
In one embodiment of the invention, the target boundary increase value is associated with a scaling algorithm corresponding to the scaling process of the second video output card.
The target boundary added value is associated with the scaling algorithm of the second video output card, so that the video review method is suitable for various scaling algorithms and has a wide application range.
In an embodiment of the present invention, the card-inserted video processing device further includes a back panel, and the second video output card is connected to the review output channel through the back panel; the outputting of the review picture to the second video output card via the review output channel for scaling and then outputting and displaying comprises: and outputting the review pictures to the backboard through the review output channel, and forwarding the review pictures to the second video output card by the backboard for zooming processing and outputting and displaying.
In a second aspect, an embodiment of the present invention discloses a video output card, which is applied in a card-insertion type video processing device, and includes: the system comprises a programmable logic device and a video processing device, wherein the programmable logic device is provided with a plurality of review output channels and a plurality of upper screen output channels, and is used for executing any one of the video review methods; and the data interfaces are respectively and electrically connected with the plurality of upper screen output channels of the programmable logic device, and are used for receiving the upper screen pictures output by the corresponding upper screen output channels and sending the upper screen pictures to the target display screen.
In a third aspect, an embodiment of the present invention discloses a card-insertion type video processing apparatus, including: a back plate; the first video output card is electrically connected with the back plate, and the first video output card is any one of the video output cards; and the second video output card is electrically connected with the back plate and is used for receiving the review pictures output by the back plate, zooming the review pictures and outputting and displaying the review pictures.
In one embodiment of the present invention, the card-inserted video processing apparatus includes a plurality of the first video output cards; the second video output card comprises a second programmable logic device and a plurality of second data interfaces electrically connected with the second programmable logic device; wherein the second programmable logic device is to: receiving a plurality of the review pictures input by the backboard; respectively carrying out reduction processing on the multiple review pictures to obtain multiple reduced review pictures; sequentially storing the reduced review pictures into a memory to form a complete spliced picture; and reading the complete spliced picture from the memory, amplifying the complete spliced picture, and outputting and displaying the complete spliced picture through the second data interface.
And the second video output card is used for zooming a plurality of return-to-watch pictures to form complete spliced pictures and then outputting and displaying the spliced pictures, so that the problem of splicing seams of the return-to-watch spliced pictures is avoided.
In a fourth aspect, an embodiment of the present invention discloses a video review device, which is applied to a first video output card of a card-inserted video processing device, where the first video output card is provided with a review output channel and an upper screen output channel, the card-inserted video processing device further includes a back plate electrically connected to the review output channel and a second video output card electrically connected to the back plate, and the video review device executes any one of the video review methods, and includes: the review output module is used for outputting review pictures to the backboard through the review output channel, and the backboard forwards the review pictures to the second video output card for zooming processing and then outputting and displaying; the upper screen output module is used for outputting an upper screen picture to a target display screen through the upper screen output channel so that the target display screen displays the upper screen picture; and the review picture comprises all image data corresponding to the upper screen picture and boundary image data corresponding to the target boundary of the upper screen picture.
In a fifth aspect, an embodiment of the present invention discloses a video review system, including: the video review system comprises a memory and a processor connected with the memory, wherein the processor stores a computer program, and executes any one of the video review methods when the processor runs the computer program.
In a sixth aspect, an embodiment of the present invention discloses a computer-readable storage medium, where a computer program is stored, and the stored computer program, when being executed by a processor, can implement any one of the foregoing video review methods.
As can be seen from the above, the embodiments of the present invention can achieve one or more of the following advantages: the problem that the last output spliced picture is spliced and displayed by a plurality of video output cards to form a splicing seam can be solved, the effect of video backsight is improved, and the video can be spliced and backsight at will.
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 structural diagram of a card-insertion type video processing device according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first video output card in the card-insertion type video processing device according to the first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a second video output card in the card-inserted video processing device according to the first embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a back plate in a card-insertion type video processing device according to a first embodiment of the present invention.
Fig. 5 is a schematic diagram of a to-be-displayed stitched picture according to a specific implementation of the video review method executed by the card-inserted video processing device according to the first embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a specific structure of a card-inserted video processing device for performing a video review method according to a first embodiment of the present invention.
Fig. 7 is a schematic diagram of a card-inserted video processing device executing a video review method according to a specific embodiment of the present invention, where the method reads a to-be-displayed stitched image in a memory to obtain a review image, and obtains an on-screen image based on the review image.
Fig. 8 is a flowchart illustrating a step of a video review method according to a second embodiment of the present invention.
Fig. 9 is a flowchart illustrating specific steps of step S11 and step S13 in the video review method illustrated in fig. 8.
Fig. 10 is a schematic structural diagram of a video review device according to a third embodiment of the present invention.
Fig. 11 is a schematic structural diagram of a video output card according to a fourth embodiment of the disclosure.
Fig. 12 is a schematic structural diagram of a video review system according to a fifth embodiment of the present invention.
Fig. 13 is a schematic structural diagram of a computer-readable storage medium according to a sixth embodiment of the disclosure.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. 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 the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the division of the embodiments of the present invention is only for convenience of description and should not be construed as a limitation, and features of various embodiments may be combined and referred to each other without contradiction.
[ first embodiment ] A method for manufacturing a semiconductor device
The existing video review method is that a video output card of a video processor sends a picture being displayed by an LED display screen, namely an upper screen picture, to a review output card, namely an AUX card, through a backboard, and the review output card performs scaling processing on the upper screen picture and then outputs and displays the upper screen picture.
Based on this, a first embodiment of the present invention discloses a card-insertion type video processing apparatus. As shown in fig. 1, the card-insertion type video processing device 10 includes, for example: a backplane 11, a video output card 12 electrically connected to the backplane 11, and a video output card 13 electrically connected to the backplane 11. Fig. 1 illustrates two video output cards 12, but the present invention is not limited thereto, and the number of the video output cards 12 may be one or more.
The video output card 12 is provided with a review output channel and an on-screen output channel, for example, and the video output card 12 executes a video review method, for example, the video review method includes:
(i) outputting a review image to the backboard 11 through the review output channel, and forwarding the review image to the video output card 13 by the backboard 11 for scaling processing and then outputting and displaying;
(ii) outputting an upper screen picture to a target display screen through the upper screen output channel so that the target display screen displays the upper screen picture; the review picture comprises all image data corresponding to the upper screen picture and boundary image data corresponding to the target boundary of the upper screen picture.
The backsight output channel is, for example, a SerDes channel and is electrically connected to the backplane 11, and the upper screen display channel is, for example, a common IO channel or a SerDes channel and is electrically connected to the target display screen. The mentioned target display screen is, for example, an LCD display screen or an LED display screen, wherein the LED display screen includes, for example, an LED display screen body and a receiving card connected to the LED display screen body, and the receiving card is typically configured with a network port for connecting with a card-type video processing device through a sending card or directly with the card-type video processing device, and the LED display screen body is, for example, formed by splicing a plurality of LED boxes, and typically, each LED box is configured with one receiving card.
The return-to-watch picture comprises all image data corresponding to the upper screen picture and boundary image data corresponding to the target boundary of the upper screen picture, the video output card 12 outputs the return-to-watch picture to the video output card 13 via the backboard 11 for return-to-watch processing and then output display, the problem that when a plurality of video output cards are used for splicing display, the last output return-to-watch spliced picture has splicing seams can be avoided, the effect of returning to watch videos is improved, and the videos can be spliced and returned to watch at will.
In other embodiments of the present invention, step (i) mentioned in the video review method performed by video output card 12 includes, for example:
(i-1) receiving and storing a spliced picture to be displayed of the target display screen;
(i-2) reading at least one part of the spliced picture to be displayed to obtain the review picture; and
(i-3) outputting the review frame to the backplane via the review output channel.
The step (ii) mentioned includes, for example:
(ii-1) intercepting the review picture based on the interface output resolution to obtain the upper screen picture;
(ii-2) outputting the on-screen picture to the target display screen via the on-screen output channel.
The spliced picture to be displayed is, for example, a picture composed of a single video source or a picture composed of a plurality of video sources spliced together. The video source is, for example, a video input card from a card-inserted video processing device, the card-inserted video processing device further includes, for example, at least one video input card electrically connected to the back plate 11, and the video input card is configured to receive at least one input video source and send the at least one input video source to the back plate 11, and the video source is, for example, an HDMI video source, a DVI video source, a DP video source, an SDI video source, or the like. The video input card includes, for example, a video source input interface, a programmable logic device electrically connected to the video source input interface, a microprocessor electrically connected to the programmable logic device, and a memory, etc., although the invention is not limited to the specific structure of the video input card.
The interface output resolution mentioned is, for example, the maximum output resolution of the target data interface of the target display screen connected to the video output card 12, but the present invention is not limited thereto, and may be other resolutions, and the maximum output resolution cannot be exceeded in principle.
The method comprises the steps of reading at least one part of a spliced picture to be displayed to obtain a backsight picture, and intercepting the backsight picture based on an interface output resolution to obtain an upper screen picture, so that the backsight picture has more boundary image data corresponding to a target boundary than the upper screen picture, and the video output card 13 can zoom based on the boundary image data to obtain an image corresponding to a splicing seam, so that the problem that the splicing seam appears in the backsight spliced picture in the prior art is solved.
In other embodiments of the present invention, the aforementioned step (i-2) includes, for example:
(a) acquiring the screen body resolution, the display splicing mode, the display position information and the target boundary added value of the target display screen;
(b) determining an upper screen picture reading range corresponding to the upper screen picture based on the interface output resolution and the display position information;
(c) determining a boundary reading range corresponding to the target boundary of the upper screen picture based on the screen body resolution, the display splicing mode and the target boundary added value;
(d) determining a review picture reading range corresponding to the review picture based on the upper screen picture reading range and the boundary reading range; and
(e) and reading the data corresponding to the spliced picture to be displayed based on the reading range of the back-looking picture to obtain the back-looking picture.
For example, if the display splicing mode is 2 × 2, it means that the to-be-displayed picture is composed of four spliced pictures, where each spliced picture corresponds to, for example, one data interface of the video output card 12, but the display splicing mode is not limited in the present invention. The mentioned display position information can be understood as the initial position coordinates of the target display screen carried by the data interface corresponding to the upper screen output channel. The target boundary increment value may be set by the user, or set as a default value, and it should be mentioned that, for example, the target boundary increment value is related to a scaling algorithm of the video output card 13, the scaling algorithms of the video output card 13 are different, and the corresponding target boundary increment values are different, for example, the scaling algorithm of the video output card 13 is, for example, a four-order linear algorithm, and then the corresponding target boundary increment value is 4, where the scaling algorithm implemented by the video output card 13 is a direct application of the existing scaling algorithm, and is not described herein again. By associating the target boundary added value with the scaling algorithm of the video output card 13, the video review method disclosed by the embodiment is applicable to different scaling algorithms, and the application range is wider. Of course, the target boundary increment value related to the present invention may not be related to the scaling algorithm of the video output card 13, that is, a preset value is set in advance, for example, the target boundary increment value is 64 or 4, etc.
In another embodiment of the present invention, the step (c) specifically includes: determining the splicing position of the spliced pictures to be displayed based on the display splicing mode and the screen body resolution, and taking the boundary of the upper screen picture adjacent to the splicing position as the target boundary; and determining the boundary read range based on the target boundary and the target boundary increment value; and the data of the spliced picture to be displayed corresponding to the boundary reading range is the boundary image data.
In other embodiments of the present invention, as shown in FIG. 2, video output card 12 includes, for example: a programmable logic device 121 and a plurality of data interfaces 122 electrically connected to the programmable logic device 121, and two data interfaces 122 are illustrated in fig. 2, but the invention is not limited thereto. The programmable logic device 121 is provided with at least one backward-looking output channel 1211 and at least one upper-screen output channel 1212, and two backward-looking output channels 1211 and two upper-screen output channels 1212 are illustrated in fig. 2, but the present invention is not limited thereto. The review output channel 1211 is, for example, a SerDes channel, the review output channel 1211 is electrically connected to the backplane 11, and each of the upper screen output channels 1212 is electrically connected to a corresponding one of the data interfaces 122.
The programmable logic device 121 is configured to implement the aforementioned video review method, for example, the programmable logic device 121 is configured to: the review image is output to the back panel 11 through the review output channel 1211, and the review image is forwarded to the video output card 13 by the back panel 11 for scaling processing and then output display; and outputting the on-screen picture to a corresponding data interface 122, namely a target data interface, via an on-screen output channel 1212, where the corresponding data interface 122 is configured to receive the on-screen picture and send the on-screen picture to a target display screen, so that the target display screen displays the on-screen picture, where the review picture includes all image data corresponding to the on-screen picture and boundary image data corresponding to a target boundary of the on-screen picture.
In other embodiments of the present invention, as shown in fig. 3, the video output card 13 includes, for example, a programmable logic device 131 and a plurality of data interfaces 132 electrically connected to the programmable logic device 131, and two data interfaces 132 are illustrated in fig. 3, but the present invention is not limited thereto.
Among others, the programmable logic device 131 is used for example: receiving a plurality of said review pictures inputted by the back panel 11; respectively carrying out reduction processing on the multiple review pictures to obtain multiple reduced review pictures; sequentially storing the reduced review pictures into a memory to form a complete spliced picture; and reading the complete spliced picture from the memory, amplifying the complete spliced picture, and outputting and displaying the complete spliced picture through a data interface 132.
Wherein the display is output via the data interface 132, for example, to a liquid crystal display, an LED display, or an LCD display. The mentioned complete mosaic may be understood as a reduced mosaic displayed by the target display screen. Of course, the video output card 13 may not perform reduction and/or enlargement processing on the review screen, for example, directly perform output display after intercepting the review screen based on the output resolution.
The programmable logic devices 121 and 131 are, for example, FPGAs or other similar logic devices. The data interface 122 and the data interface 132 are mentioned as digital video interfaces, such as digital video interfaces such as HDMI, DVI, or SDI interfaces, but also network interfaces such as hundreds of megabits of network interfaces or giga of network interfaces, or optical fiber interfaces such as 10G optical fiber interfaces or 20G optical fiber interfaces. It should be noted that when the data interface is a digital video interface, for example, an HDMI interface, an HDMI video encoding chip is further disposed between the HDMI interface and the programmable logic device, when the data interface is a network interface, for example, a gigabit network interface, a gigabit network PHY chip is further disposed between the gigabit network interface and the programmable logic device, and when the data interface is an optical fiber interface, for example, a 10G optical fiber interface, an SFP optical module is further disposed between the optical fiber interface and the programmable logic device.
It should be noted that the video output cards 12 and 13 further include devices such as a microprocessor and a memory connected to a programmable logic device, for example. The mentioned microcontroller is, for example, an MCU, also called a microcomputer or a single chip microcomputer; or other microprocessors with certain data processing and computing capabilities, such as ARM processors and DSP processors. The memory mentioned is, for example, a volatile memory, such as an SDRAM memory, and/or a non-volatile memory, such as Flash memory, or emmc (embedded Multi Media card), etc.
In other embodiments of the present invention, backplane 11 connects video output card 12 and video output card 13, for example, by backplane traces.
In other embodiments of the present invention, as shown in fig. 4, the backplane 11 is provided with a matrix switch module 111, for example, and the video output cards 12 and 13 are electrically connected to the matrix switch module 111.
Further, the backplane 11 is also provided with a plurality of connectors 112 connecting the matrix switch modules 111. The video output card 12 and the video output card 13 are connected to the matrix switch module 111 through connectors, respectively. It is understood herein that video output card 12 and video output card 13 are provided with backplane connectors corresponding to connectors 112, for example, video output card 12 is provided with backplane connectors electrically connected to programmable logic device 121. The matrix switch module 111 includes, for example, a matrix switch chip, for example, a rectangular switch chip is a Crosspoint switch chip. The connector 112 is, for example, a pin header connector, and the pin header connector is, for example, a simple pin header connector, abbreviated as "simple" connector, which is composed of, for example, a square plastic socket and a plurality of square pins arranged in order. Of course, the connector 112 may be a female connector or other type of connector.
By arranging the matrix switching module 111 on the back panel 11 to electrically connect the video output card 12 and the video output card 13, the mapping relationship from the output of the video output card 12 to the input of the video output card 13 can be realized at will, the flexibility of the system is improved, and the defect of poor flexibility caused by directly connecting the first video output card and the second video output card through a back panel wire is avoided.
In other embodiments of the present invention, the aforementioned matrix switch module 111 may also be connected to the backplane 11 in the form of a daughter card, for example.
In other embodiments of the present invention, the previously disclosed card-inserted video processing device 10 may not be provided with the backplane 11, and the video output card 12 is connected to the video output card 13 by a wire.
For better understanding of the present embodiment, a specific implementation of a video review method implemented by the card-inserted video processing device 10 disclosed in the present embodiment is illustrated below with reference to fig. 5 to 7.
The card-inserting type video processing device is used in a large-scale activity scene, for example, wherein the card-inserting type video processing device needs to output pictures to an LED display screen of a stage background wall for displaying, on the other hand, the pictures displayed by the LED display screen are transmitted back to a broadcast station for determining whether the content is normal or not, on the other hand, the pictures displayed by the LED display screen also need to be reviewed back, displayed on an auxiliary display screen of the stage, and play a role of prompting actors and a host on the stage. The method for the card-inserted video processing device to return the picture displayed by the LED display screen to the director is an existing video monitoring method, and is not described herein again, and the following description mainly illustrates a video review method implemented by the card-inserted video processing device.
The to-be-displayed picture of the LED display screen is, for example, a to-be-displayed spliced picture, as shown in fig. 5, which includes, for example, four spliced pictures, that is, four upper screen pictures: the embodiment is not limited to the specific form of the spliced picture to be displayed, and the spliced picture to be displayed is described below as an example of the picture consisting of one video source.
As shown in fig. 6, the card-inserted video processing device according to the present embodiment includes, for example, a backplane 11, a video output card 12A, a video output card 12B, a video output card 13, and a video input card 14.
Wherein, the video input card 14 is used for receiving an input video source and sending the video source to the backplane 11, the matrix switch chip of the backplane 11 sends the received video source to the video output card 12A and the video output card 12B, the video output card 12A and the video output card 12B receive the input video source as a to-be-displayed spliced picture to be processed and then output to the LED display screen for splicing display, wherein the upper screen picture a-1 in fig. 5 is output by the video output card 12A via the upper screen output channel 1212A-1 and the data interface 122A-1, the upper screen picture a-2 is output by the video output card 12A via the upper screen output channel 1212A-2 and the data interface 122A-2, the upper screen picture B-1 is output by the video output card 12B via the upper screen output channel 1212B-1 and the data interface 122B-1, the on-screen picture B-2 is output by video output card 12B via on-screen output channel 1212B-2 and data interface 122B-2. In addition, before the video output cards 12A and 12B output the on-screen pictures to the LED display screens, the video output cards 12A and 12B need to output the review pictures corresponding to the on-screen pictures to the backplane 11.
Specifically, the example of the video output card 12A outputting the review picture F-1 corresponding to the on-screen picture A-1 through the review output channel 1211A-1 will be specifically described with reference to FIG. 7.
The programmable logic device 121A of the video output card 12A receives an input to-be-displayed spliced picture and stores the spliced picture in the memory, then the programmable logic device 121A determines an upper screen picture reading range corresponding to the upper screen picture a-1 according to the interface output resolution of the data interface 122A-1 and the corresponding display position information, and then determines a boundary reading range corresponding to a target boundary of the upper screen picture based on the screen body resolution, the display splicing mode and the target boundary added value of the LED display screen, thereby determining a review picture reading range based on the upper screen picture reading range and the boundary reading range, and reading corresponding data from the memory to obtain a review picture. Specifically, for example, the screen volume resolution of the target display screen is 2560 × 1440, the interface output resolution is 1280 × 720, the display position information, that is, the coordinates of the starting point of the LED display screen with data interface 122A-1 is (0,0), so that the reading range of the upper screen corresponding to the upper screen can be determined as the size of 1280 × 720, which is read from the starting point, the display splicing manner is 2 × 2, the splicing position of the spliced screen to be displayed can be determined, and the boundary between the upper screen a-1 and the splicing position is taken as the target boundary, that is, the splicing position between the upper screen a-1 and the upper screen a-2 is the target boundary, and the splicing position between the upper screen a-1 and the upper screen B-1 is the target boundary, and then the boundary reading range can be determined based on the obtained target boundary increasing value, wherein the target boundary added value is, for example, a preset value, for example, 2, or the target boundary added value is a scaling algorithm corresponding to the scaling process associated with the video output card 13, the scaling algorithm of the video output card 13 is a direct application of the existing scaling algorithm, and is not repeated herein, for example, the scaling algorithm of the video output card 13 is, for example, a second-order linear algorithm, and the corresponding target boundary added value is 2, although the present invention is not limited thereto, it may be determined that 2 rows and 2 columns are extended outwards along the target boundary on the upper screen reading range corresponding to the upper screen to obtain a review picture reading range corresponding to the review picture, and then the corresponding data is read from the memory based on the review picture reading range to obtain the review picture F-1, and the review picture F-1 includes all the image data of the upper screen a-1 and the boundary image data of the target boundary, it should be noted here that the added value of the target boundary may also be greater than 2, and the redundant data is directly cut off in the video output card 13, and the programmable logic device 121A directly sends the obtained review picture to the review output channel, for example, SerDes channel, and outputs the review picture to the backplane 11, and then the programmable logic device 121A cuts the review picture F-1 according to the interface output resolution, for example, 1280 × 720, and outputs the review picture F-1 to the LED display screen through the data interface 122A-1 for display.
The method for the review output channel 1211A-2 of the video output card 12A to output the review picture corresponding to the on-screen picture a-2, the method for the review output channel 1211B-1 of the video output card 12B to output the review picture corresponding to the on-screen picture B-1, and the method for the review output channel 1211B-2 of the video output card 12B to output the review picture corresponding to the on-screen picture B-2 are the same as the foregoing exemplary method, and are not repeated herein.
After receiving the review pictures from the video output card 12A and the video output card 12B, the matrix switch chip of the backplane 11 outputs the obtained four review pictures to the video output card 13, where the video output card 13 is the AUX card in the foregoing description of the prior art, and the video review method disclosed in this embodiment does not change the AUX card, so that the problem of a splice seam occurring in the output review spliced pictures in the prior art can be solved.
As shown in fig. 6, the programmable logic device 131 of the video output card 13 is provided with four scaling modules: 1311A, 1311B, 1311C, and 1311D respectively receive four review screens input by the backplane, where the scaling module 1311A and the scaling module 1311B are electrically connected to the data interface 132A, and the scaling module 1311C and the scaling module 1311D are electrically connected to the data interface 132B.
Specifically, the working process of the scaling processing module is exemplified by taking the review picture F-1 as an example. After the review picture F-1 enters the scaling processing module 1311A, the scaling processing module 1311A performs reduction processing on the review picture F-1 according to a preset scaling algorithm, and since the review picture F-1 at this time includes boundary image data corresponding to the target boundary in addition to all image data of the upper screen picture, the preset scaling algorithm can calculate a spliced boundary image of the review picture by using the boundary image data, so that no spliced seam is generated at the boundary, and then the obtained reduced review picture is stored in a position corresponding to the memory.
And other zooming processing modules perform the same operation, and store the obtained reduced review picture in a corresponding position of the memory, wherein the image in the memory is a complete seamless complete spliced image and can also be understood as a reduced version of the spliced image displayed by the LED display screen. Then, the programmable logic device 131 of the video output card 13 may read the corresponding data from the memory according to the loaded information corresponding to the data interface and output the data, or amplify the data and output the amplified data.
For example, the loaded information corresponding to the data interface 132A is, for example, from a starting point, half of the image data is loaded, then the programmable logic device 131 reads half of the complete stitched image from the memory and outputs the half of the image, and if the amplification processing is required at this time, the corresponding half of the image is read and amplified, and then the amplified image is sent to the data interface 132A. Similarly, the programmable logic device 131 also reads the other half of the complete mosaic image from the memory and outputs the other half of the complete mosaic image to the data interface 132B, or outputs the complete mosaic image to the data interface 132B after performing amplification processing, and the data interface 132A and the data interface 132B output the complete mosaic image to an auxiliary display screen of the stage, such as an LED display screen, for display.
It should be noted that, the foregoing specific embodiment is described by taking an example that two video output cards respectively output a splicing picture to implement splicing display, but the present invention is not limited thereto, and the aforementioned splicing picture to be displayed may also be implemented by one video output card to implement splicing display, that is, four data interfaces of one video output card respectively correspond to an output upper screen picture a-1, an upper screen picture a-2, an upper screen picture B-1, and an upper screen picture B-2 to implement splicing display.
It should be noted that the card-inserted video processing device disclosed in this embodiment can perform review on the video source output source of the video output card, and also can perform review on the video input source of the video input card, and in addition, the specific application scenario of the card-inserted video processing device and which display the reviewed video source is output to are not limited, and the foregoing description is only for better understanding of this embodiment.
In summary, the card-inserted video processing device 10 disclosed in this embodiment outputs the review pictures to the video output card 13 via the backplane 11 for output display after review processing by using the review pictures including all the image data corresponding to the top-screen picture and the boundary image data corresponding to the target boundary of the top-screen picture, so that the problem of seams existing in the review spliced pictures output last when a plurality of video output cards are used for splicing display can be avoided, the effect of review of videos is improved, and the videos can be arbitrarily spliced and reviewed; by arranging the matrix switching module 111 on the back panel 11 to electrically connect the video output card 12 and the video output card 13, the mapping relationship from the output of the video output card 12 to the input of the video output card 13 can be realized at will, the flexibility of the system is improved, and the defect of poor flexibility caused by directly connecting the first video output card and the second video output card through a back panel wire is avoided.
[ second embodiment ]
Referring to fig. 8, a second embodiment of the present invention discloses a video review method, which is implemented in a first video output card of a card-inserted video processing device, where the first video output card is provided with a review output channel and an upper screen output channel corresponding to the review output channel, the card-inserted video processing device further includes a second video output card electrically connected to the review output channel, and the video review method includes, for example, step S11 and step S13.
Step S11: outputting a review picture to the second video output card through the review output channel for zooming processing and then outputting and displaying;
step S13: outputting an upper screen picture to a target display screen through the upper screen output channel so that the target display screen displays the upper screen picture;
and the review picture comprises all image data corresponding to the upper screen picture and boundary image data corresponding to the target boundary of the upper screen picture.
In other embodiments of the present invention, the first mentioned video output card further comprises, for example, a target data interface, and the target data interface is connected to the on-screen output channel; wherein outputting the on-screen picture to the target display screen via the on-screen output channel comprises: and outputting the screen-up picture to the target data interface through the screen-up output channel, so that the target data interface outputs the screen-up picture to the target display screen.
In other embodiments of the present invention, as shown in fig. 9, step S11 includes, for example, step S111 to step S113, and step S13 includes, for example, step S131 and step S132.
Step S111: receiving and storing a splicing picture to be displayed of the target display screen;
step S112: reading at least one part of the spliced picture to be displayed to obtain the back-viewing picture; and
step S113: outputting the review pictures to the second video output card through the review output channel;
step S131: intercepting the review picture based on the interface output resolution of the target data interface to obtain the upper screen picture;
step S132: and outputting the upper screen picture to the target data interface through the upper screen output channel, so that the target data interface outputs the upper screen picture to the target display screen.
In other embodiments of the present invention, the step S112 includes, for example:
(a) acquiring the screen body resolution, the display splicing mode, the display position information and the target boundary added value of the target display screen;
(b) determining an upper screen picture reading range corresponding to the upper screen picture based on the interface output resolution and the display position information;
(c) determining a boundary reading range corresponding to the target boundary of the upper screen picture based on the screen body resolution, the display splicing mode and the target boundary added value;
(d) determining a review picture reading range corresponding to the review picture based on the upper screen picture reading range and the boundary reading range; and
(e) and reading the data corresponding to the spliced picture to be displayed based on the reading range of the back-looking picture to obtain the back-looking picture.
In other embodiments of the present invention, the aforementioned step (c) includes, for example: determining the splicing position of the spliced pictures to be displayed based on the display splicing mode and the screen body resolution, and taking the boundary of the upper screen picture adjacent to the splicing position as the target boundary; determining the boundary read range based on the target boundary and the target boundary increment value; and the data of the spliced picture to be displayed corresponding to the boundary reading range is the boundary image data.
In other embodiments of the present invention, the target boundary increment value is associated with a scaling algorithm corresponding to the scaling process of the second video output card.
It should be noted that the present invention is not limited to the target boundary increment value, for example, the aforementioned scaling algorithm associated with the second video output card, or the target boundary increment value may not be associated with the scaling algorithm of the second video output card, which is a preset value, for example, the preset value is 64 or 4, etc.
It should be noted that the video review method disclosed in this embodiment is, for example, the video review method executed by the video output card 12 in the foregoing first embodiment, and for a specific description of the video review method disclosed in this embodiment, reference may be made to the related description of the foregoing first embodiment, which is not repeated herein.
[ third embodiment ]
As shown in fig. 10, a third embodiment of the present invention discloses a video review device 30, which is applied to a first video output card of a card-inserted video processing apparatus, wherein the first video output card is provided with a review output channel and an upper screen output channel corresponding to the review output channel, the card-inserted video processing apparatus further includes a second video output card electrically connected to the review output channel, the video review device is configured to execute the video review method according to the second embodiment, and for example, the video review device includes: a review output module 31 and a screen-up output module 32.
The review output module 31 is configured to output a review image to the second video output card via the review output channel for scaling and then output and display. The upper screen output module 32 is configured to output an upper screen image to a target display screen through the upper screen output channel, so that the target display screen displays the upper screen image; and the review picture comprises all image data corresponding to the upper screen picture and boundary image data corresponding to the target boundary of the upper screen picture.
In other embodiments of the invention, the first video output card further comprises a target data interface, the target data interface being connected to the on-screen output channel; wherein outputting the on-screen picture to the target display screen via the on-screen output channel comprises: and outputting the screen-up picture to the target data interface through the screen-up output channel, so that the target data interface outputs the screen-up picture to the target display screen.
In other embodiments of the present invention, the review output module 31 is specifically configured to receive and store the to-be-displayed spliced image of the target display screen; reading at least one part of the spliced picture to be displayed to obtain the back-viewing picture; and outputting the review pictures to the second video output card through the review output channel.
Further, the screen output module 32 is specifically configured to intercept the review screen to obtain the screen based on the interface output resolution of the target data interface; and outputting the upper screen picture to the target data interface through the upper screen output channel, so that the target data interface outputs the upper screen picture to the target display screen.
In other embodiments of the present invention, the review output module 31 is configured to read at least a part of the to-be-displayed spliced picture to obtain the review picture, and specifically includes: acquiring the screen body resolution, the display splicing mode, the display position information and the target boundary added value of the target display screen; determining an upper screen picture reading range corresponding to the upper screen picture based on the interface output resolution and the display position information; determining a boundary reading range corresponding to the target boundary of the upper screen picture based on the screen body resolution, the display splicing mode and the target boundary added value; determining a review picture reading range corresponding to the review picture based on the upper screen picture reading range and the boundary reading range; and reading the data corresponding to the spliced picture to be displayed based on the reading range of the review picture to obtain the review picture.
In other embodiments of the present invention, the review output module 31 is configured to determine a boundary reading range corresponding to the target boundary of the upper screen based on the screen resolution, the display splicing manner, and the target boundary added value, and specifically includes: determining the splicing position of the spliced pictures to be displayed based on the display splicing mode and the screen body resolution, and taking the boundary of the upper screen picture adjacent to the splicing position as the target boundary; determining the boundary read range based on the target boundary and the target boundary increment value; and the data of the spliced picture to be displayed corresponding to the boundary reading range is the boundary image data.
In other embodiments of the invention, the target boundary increase value is associated with a scaling algorithm corresponding to the scaling process of the second video output card.
In other embodiments of the present invention, the card-inserted video processing device further includes a back panel, and the second video output card is connected to the review output channel through the back panel; the review output module is specifically configured to: and outputting the review pictures to the backboard through the review output channel, and forwarding the review pictures to the second video output card by the backboard for zooming processing and outputting and displaying.
It should be noted that the video review method implemented by the video review device 30 disclosed in this embodiment is as described in the second embodiment, and therefore, the detailed description thereof is omitted here. Alternatively, the respective modules, units and other operations or functions described above in the third embodiment are respectively for realizing the method in the second embodiment of the present invention.
[ fourth example ] A
As shown in fig. 11, a fourth embodiment of the present invention discloses a video output card 40, for example, including: a programmable logic device 41 and a plurality of data interfaces 42 electrically connected to the programmable logic device 41, two data interfaces 42 are illustrated in fig. 11, but the invention is not limited thereto.
The programmable logic device 41 is provided with a plurality of review output channels 411 and a plurality of upper screen output channels 412, for example, fig. 11 illustrates two review output channels 411 and two upper screen output channels 412, but the present invention is not limited thereto, the plurality of review output channels 411 are electrically connected to, for example, a second video output card of the card-inserted video processing device, the plurality of upper screen output channels 412 are electrically connected to the plurality of data interfaces 42, respectively, and the programmable logic device 41 is configured to execute the video review method described in the foregoing second embodiment, and includes, for example:
outputting a review picture to the second video output card through the review output channel for zooming processing and then outputting and displaying;
outputting an upper screen picture to a target display screen through the upper screen output channel so that the target display screen displays the upper screen picture;
and the review picture comprises all image data corresponding to the upper screen picture and boundary image data corresponding to the target boundary of the upper screen picture.
The data interface 42 is configured to receive the on-screen image output through the corresponding on-screen output channel, and send the on-screen image to the target display screen.
It should be noted that the video output card 40 disclosed in this embodiment is, for example, the video output card 12 in the card-inserted video processing device disclosed in the foregoing first embodiment, and for the related description of the video output card 40, reference may be made to the description of the video output card 12 in the foregoing first embodiment, which is not repeated herein for brevity.
[ fifth embodiment ]
As shown in fig. 12, a fifth embodiment of the present invention discloses a video review system 50, for example, including a memory 52 and a processor 51 connected to the memory 52. The memory 52 is, for example, a nonvolatile memory, on which a computer program is stored. The processor 51 is, for example, an embedded processor. The processor 51 executes the video review method disclosed in the foregoing second embodiment when running the computer program.
[ sixth embodiment ]
As shown in fig. 13, a sixth embodiment of the present invention discloses a computer-readable storage medium 60, where the computer-readable storage medium 60 is, for example, a non-volatile memory, and the non-volatile memory is, for example: 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.). Computer-readable storage medium 60 has stored thereon computer-executable instructions 61. The computer-readable storage medium 60 can execute the computer-executable instructions 61 by one or more processors or processing devices to implement the video review method disclosed in the foregoing second embodiment.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a video returns and looks method which characterized in that, is applied to in the first video output card of plug-in card formula video processing equipment, first video output card be provided with return and look output channel and with return look output channel correspond last screen output channel, plug-in card formula video processing equipment still including the electricity connect return look output channel's second video output card includes:
outputting a review picture to the second video output card through the review output channel for zooming processing and then outputting and displaying;
outputting an upper screen picture to a target display screen through the upper screen output channel so that the target display screen displays the upper screen picture;
and the review picture comprises all image data corresponding to the upper screen picture and boundary image data corresponding to the target boundary of the upper screen picture.
2. The video review method of claim 1, wherein the first video output card further comprises a target data interface, the target data interface being connected to the on-screen output channel; wherein outputting the on-screen picture to the target display screen via the on-screen output channel comprises:
and outputting the screen-up picture to the target data interface through the screen-up output channel, so that the target data interface outputs the screen-up picture to the target display screen.
3. The video review method of claim 2,
the outputting, via the review output channel, a review picture to the second video output card for scaling and then outputting and displaying specifically includes:
receiving and storing a splicing picture to be displayed of the target display screen;
reading at least one part of the spliced picture to be displayed to obtain the back-viewing picture; and
outputting the review pictures to the second video output card through the review output channel;
the outputting of the on-screen picture to the target display screen via the on-screen output channel specifically includes:
intercepting the return-to-watch picture based on the interface output resolution of the target data interface to obtain the upper screen picture;
and outputting the upper screen picture to the target data interface through the upper screen output channel, so that the target data interface outputs the upper screen picture to the target display screen.
4. The video review method of claim 3, wherein reading at least a portion of the merged picture to be displayed to obtain the review picture comprises:
acquiring the screen body resolution, the display splicing mode, the display position information and the target boundary added value of the target display screen;
determining an upper screen picture reading range corresponding to the upper screen picture based on the interface output resolution and the display position information;
determining a boundary reading range corresponding to the target boundary of the upper screen picture based on the screen body resolution, the display splicing mode and the target boundary added value;
determining a review picture reading range corresponding to the review picture based on the upper screen picture reading range and the boundary reading range; and
and reading the data corresponding to the spliced picture to be displayed based on the reading range of the back-looking picture to obtain the back-looking picture.
5. The video review method of claim 4, wherein the determining a boundary reading range corresponding to the target boundary of the upper screen based on the screen resolution, the display stitching manner, and the target boundary increment value comprises:
determining the splicing position of the spliced pictures to be displayed based on the display splicing mode and the screen body resolution, and taking the boundary of the upper screen picture adjacent to the splicing position as the target boundary;
determining the boundary read range based on the target boundary and the target boundary increment value;
and the data of the spliced picture to be displayed corresponding to the boundary reading range is the boundary image data.
6. The video review method of claim 4 or 5, wherein the target boundary increment value is associated with a scaling algorithm corresponding to the scaling process of the second video output card.
7. The video review method of claim 1, wherein the card-inserted video processing device further comprises a backplane through which the second video output card is connected to the review output channel; the outputting of the review picture to the second video output card via the review output channel for scaling and then outputting and displaying comprises:
and outputting the review pictures to the backboard through the review output channel, and forwarding the review pictures to the second video output card by the backboard for zooming processing and outputting and displaying.
8. A video output card for use in a card-insertable video processing device, comprising:
a programmable logic device provided with a plurality of review output channels and a plurality of on-screen output channels, wherein the programmable logic device is configured to perform the video review method of any one of claims 1-7;
and the data interfaces are respectively and electrically connected with the plurality of upper screen output channels of the programmable logic device, and are used for receiving the upper screen pictures output by the corresponding upper screen output channels and sending the upper screen pictures to the target display screen.
9. A card-insertion type video processing apparatus, comprising:
a back plate;
a first video output card electrically connected to the backplane, the first video output card being the video output card of claim 8;
and the second video output card is electrically connected with the back plate and is used for receiving the review pictures output by the back plate, zooming the review pictures and outputting and displaying the review pictures.
10. A card-insertion type video processing device according to claim 9, wherein said card-insertion type video processing device includes a plurality of said first video output cards; the second video output card comprises a second programmable logic device and a plurality of second data interfaces electrically connected with the second programmable logic device; wherein the second programmable logic device is to:
receiving a plurality of the review pictures input by the backboard;
respectively carrying out reduction processing on the multiple review pictures to obtain multiple reduced review pictures;
sequentially storing the reduced review pictures into a memory to form a complete spliced picture; and
and reading the complete spliced picture from the memory, amplifying the complete spliced picture, and outputting and displaying the complete spliced picture through the second data interface.
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