CN111104080B - Text remote preview method and device - Google Patents
Text remote preview method and device Download PDFInfo
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- CN111104080B CN111104080B CN201811269253.3A CN201811269253A CN111104080B CN 111104080 B CN111104080 B CN 111104080B CN 201811269253 A CN201811269253 A CN 201811269253A CN 111104080 B CN111104080 B CN 111104080B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F3/04845—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range for image manipulation, e.g. dragging, rotation, expansion or change of colour
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
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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
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
- H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Abstract
The application provides a text remote preview method and a text remote preview device, wherein the method comprises the following steps: screenshot is carried out on a text area in an editing state at present to obtain a text picture; and converting the text picture into a video stream, and transmitting the converted video stream to the remote equipment, so that the remote equipment outputs and displays the video stream. The portable equipment can be a local interrogation machine, the remote equipment can be an interrogation machine in a different place, and the remote interrogation machine can output and display text contents, namely an interrogation pen record, in real time by screenshot of a text area which is edited locally and converting the intercepted picture into a video stream and then sending the video stream to the interrogation machine in the different place, so that remote preview of the interrogation pen record is realized, and the limitation of remote preview of the interrogation pen record is broken through. And because picture transmission is more time-consuming than video streaming transmission, the real-time performance of remote preview can be improved by a video streaming transmission mode.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for remotely previewing a text.
Background
When a criminal suspect is queried by law enforcement departments (such as public security agencies, inspection centers, and examinations) to confirm crimes and find crime facts, a recorder records contents in the query process through a interrogation device to obtain query entry documents, and the query entry documents are projected to a screen through an external display screen for previewing.
However, when two inquiries are in different places, for example, law enforcement officers remotely check criminal suspects, or the inquiries need the law enforcement officers to be conducted simultaneously in two places, since the query pen record can only be displayed locally, the other party in a different place cannot preview the query pen record in real time, and cannot know the accuracy of the query pen record, the limitation of remotely previewing the query pen record is large.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for remotely previewing a text, so as to solve the problem that remote previewing of an inquiry record cannot be implemented in the related art.
According to a first aspect of embodiments of the present application, there is provided a text remote preview method, which is applied to a portable device, and includes:
screenshot is carried out on a text area in an editing state at present to obtain a text picture;
and converting the text picture into a video stream, and sending the converted video stream to a remote device, so that the remote device outputs and displays the video stream.
According to a second aspect of embodiments of the present application, there is provided a text remote preview apparatus, which is applied to a portable device, the apparatus including:
the screenshot module is used for screenshot the text area in the current editing state to obtain a text picture;
and the sending module is used for converting the text picture into a video stream and sending the converted video stream to remote equipment so that the remote equipment outputs and displays the video stream.
According to a third aspect of embodiments herein, there is provided a portable device comprising a readable storage medium and a processor;
wherein the readable storage medium is configured to store machine executable instructions;
the processor is configured to read the machine executable instructions on the readable storage medium and execute the instructions to implement the steps of the text remote preview method.
According to a fourth aspect of the embodiments of the present application, there is provided a readable storage medium, in which computer instructions are stored, and the computer instructions are executed to implement the steps of the text remote preview method described above.
By applying the embodiment of the application, when the trial messages are sent in different places, the local portable equipment can capture the current text area in the editing state to obtain the text picture, convert the text picture into the video stream, and send the converted video stream to the remote equipment, so that the remote equipment outputs and displays the video stream.
Based on the above description, it can be known that the local portable device may be a local interrogation device, and the remote device may be an interrogation device in a different place, and the remote interrogation device may output and display text content, i.e., an interrogation record, in real time by capturing a local text area being edited, converting the captured image into a video stream, and then sending the video stream to the interrogation device in the different place, so as to implement remote preview of the interrogation record, and break through the limitation of remote preview of the interrogation record. And the image transmission is time-consuming compared with the video streaming transmission, so that the real-time performance of remote preview can be improved by the video streaming transmission mode.
Drawings
FIG. 1A is a flowchart illustrating an embodiment of a text remote preview method according to an exemplary embodiment of the present application;
FIG. 1B is a diagram illustrating a separate preview screen of an interrogation record according to the embodiment shown in FIG. 1A;
FIG. 1C is a diagram illustrating a preview screen of an interrogation record in a picture-in-picture according to the embodiment shown in FIG. 1A;
FIG. 1D is a diagram illustrating a preview screen recorded in a quad-screen for an interrogation pen according to the embodiment of FIG. 1A;
FIG. 2 is a diagram illustrating a hardware configuration of a portable device according to an exemplary embodiment of the present application;
fig. 3 is a block diagram of an embodiment of a text remote preview device according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at" \8230; "or" when 8230; \8230; "or" in response to a determination ", depending on the context.
At present, in some scenes of public interrogation, the interrogation needs to be realized to be public and transparent, so that interrogators of law enforcement departments use a portable interrogation machine to record the content in the interrogation process, and simultaneously screen the interrogation pen recording documents recorded by the interrogation machine through an external display screen for personnel on the interrogation site to preview.
However, when two inquiries are located in different places, such as two cities at the location of law enforcement officers and criminal suspects, or the criminal suspects cannot perform face-to-face inquiries with law enforcement officers due to special reasons, at this time, in the process of inquiries, the inquiries of the locations of the law enforcement officers are recorded and stored by the inquiries of the law enforcement officers and can only be displayed on a local screen, and the criminal suspects or other criminal officers located at different places cannot preview the content of the inquiries in real time, and cannot know the accuracy of the records of the inquiries, so that the limitation of remotely previewing the inquiries is large.
Based on the method, when the trial messages are sent in different places, the local portable equipment can capture the current text area in the editing state to obtain a text picture, convert the text picture into a video stream, and send the converted video stream to the remote equipment, so that the remote equipment outputs and displays the video stream.
Based on the above description, it can be known that the local portable device may be a local interrogation device, and the remote device may be an interrogation device in a different place, and the remote interrogation device may output and display text content, i.e., an interrogation record, in real time by capturing a local text area being edited, converting the captured image into a video stream, and then sending the video stream to the interrogation device in the different place, so as to implement remote preview of the interrogation record, and break through the limitation of remote preview of the interrogation record. And the image transmission is time-consuming compared with the video streaming transmission, so that the real-time performance of remote preview can be improved by the video streaming transmission mode.
Fig. 1A is a flowchart of an embodiment of a text remote preview method according to an exemplary embodiment of the present application, where the embodiment of the present application may be applied to a portable device, and the following takes the portable device as a messenger and previewed text as an example of an inquiry note, as shown in fig. 1A, the text remote preview method includes the following steps:
step 101: and carrying out screenshot on the text area which is currently edited to obtain a text picture.
In an embodiment, the text area being edited may be subjected to screenshot according to a preset screenshot interval duration, and data of the intercepted text picture may be stored.
The portable device can capture the screenshot of the text area through a screenshot application program carried by the device system. The format of the stored text picture may be JPEG format or BMP format, which is not limited herein. While saving the text picture data, preset information and width and height information of the text picture can be added to the data header, wherein the preset information is used for indicating that the data represents a picture. The preset screenshot interval duration supports dynamic setting of a user, and can be set according to the updating condition of a recording person on the text in the inquiry process, for example, the preset screenshot interval duration is set to be 500 milliseconds.
Step 102: and converting the text picture into a video stream, and transmitting the converted video stream to the remote equipment, so that the remote equipment outputs and displays the video stream.
In an embodiment, for the process of converting the text picture into the video stream, the text picture may be decoded into the data in the specified format, and the data in the specified format is encoded into the video stream according to the preset encoding parameter and the preset screenshot interval duration.
The text picture can be sent to the coding and decoding chip arranged in the device, the coding and decoding chip converts the text picture into the video stream, the text picture can also be sent to the coding and decoding module arranged in the device, and the coding and decoding module converts the text picture into the video stream. The specified format data may be YUV data. Because the head of the picture sent to the coding and decoding chip or the coding and decoding module is added with the preset information and the width and height information of the picture, the coding and decoding chip or the coding and decoding module can determine that the text picture is sent by a screenshot application program of the system according to the preset information carried by the picture head, then a decoder is selected according to the height and width information carried by the picture head, and the selected decoder decodes the text picture into YUV data. The preset encoding parameters support dynamic setting of a user, and can be set according to actual application requirements, for example, parameters such as a code stream format, a frame rate, a resolution and the like can be set.
In an example, assuming that the preset screenshot interval duration is 1 second and the frame rate is 25 frames/second, that is, 25 frames of pictures are played per second, in the encoding process, 24 copies of the YUV data of the text picture are required to obtain the YUV data of the 25 frames of pictures, and then the YUV data of the 25 frames of pictures is encoded into a 1-second video stream.
In an embodiment, for the process of sending the converted video stream to the remote device, the video stream may be encapsulated into an RTP (Real-time Transport Protocol) packet and then transmitted to the remote device for outputting a preview.
The remote device may be an intelligent device of a network client equipped with a kiosk, or may be a kiosk in a different location, which is not limited herein.
In an embodiment, after the text picture is converted into the video stream, the video stream may be PS-packaged to obtain a video file, and the video file is stored locally for subsequent playback and preview.
It should be noted that after the text picture is converted into the video stream, the video stream may be locally and separately output and displayed, so that the text is taken as a separate picture preview, as shown in fig. 1B, which is an exemplary preview of an inquiry stroke recorded as a picture preview.
The method can also acquire the video stream currently acquired by the camera, perform picture-in-picture synthesis on the acquired video stream and the converted video stream, output and display the picture-in-picture synthesized video stream, and realize the text configuration to picture-in-picture preview. The method may include acquiring video streams collected by multiple cameras, and performing picture-in-picture synthesis on the acquired multiple video streams and the converted video streams, where the video streams collected by the cameras are monitoring pictures of an interrogation site, as shown in fig. 1C, which is an exemplary method for configuring an interrogation record to a picture-in-picture preview
And selecting one sub-interface from the multi-split-screen interfaces supported by the equipment, configuring the converted video stream to the sub-interface for output and display, and realizing the preview of the text in any window in the split screen. The other windows in the split screen display the monitoring pictures acquired by the camera, as shown in fig. 1D, which is an exemplary preview of a window recording an inquiry pen in the split screen.
It should be further noted that, after the remote device receives the video stream, based on the same principle, the remote device may also implement single-screen preview, picture-in-picture preview, and split-screen preview of the text.
In the embodiment of the application, when trial messages are sent in different places, the local portable equipment can capture the current text area in an editing state to obtain the text picture, convert the text picture into the video stream, and send the converted video stream to the remote equipment, so that the remote equipment outputs and displays the video stream.
Based on the above description, it can be known that the local portable device may be a local interrogation device, and the remote device may be an interrogation device in a different place, and the remote interrogation device may output and display text content, i.e., an interrogation record, in real time by capturing a local text area being edited, converting the captured image into a video stream, and then sending the video stream to the interrogation device in the different place, so as to implement remote preview of the interrogation record, and break through the limitation of remote preview of the interrogation record. And because picture transmission is more time-consuming than video streaming transmission, the real-time performance of remote preview can be improved by a video streaming transmission mode.
Fig. 2 is a hardware block diagram of a portable device according to an exemplary embodiment of the present application, the portable device including: a communication interface 201, a processor 202, a machine-readable storage medium 203, and a bus 204; wherein the communication interface 201, the processor 202 and the machine-readable storage medium 203 communicate with each other via a bus 204. The processor 202 may execute the method described above by reading and executing machine-executable instructions in the machine-readable storage medium 202 corresponding to the control logic of the text remote preview method, and the specific content of the method is described in the above embodiments, which will not be described herein again.
The machine-readable storage medium 203 referred to herein may be any electronic, magnetic, optical, or other physical storage device that can contain or store information such as executable instructions, data, and the like. For example, the machine-readable storage medium may be: volatile memory, non-volatile memory, or similar storage media. In particular, the machine-readable storage medium 203 may be a RAM (random Access Memory), a flash Memory, a storage drive (e.g., a hard drive), any type of storage disk (e.g., an optical disk, a DVD, etc.), or similar storage medium, or a combination thereof.
Fig. 3 is a block diagram of an embodiment of a text remote preview apparatus according to an exemplary embodiment of the present application, which may be applied to a portable device, and the apparatus includes:
the screenshot module 310 is configured to screenshot a text region currently in an editing state to obtain a text picture;
a sending module 320, configured to convert the text picture into a video stream, and send the converted video stream to a remote device, so that the remote device outputs and displays the video stream.
In an optional implementation manner, the sending module 320 is specifically configured to decode the text picture into data in a specified format in a process of converting the text picture into a video stream; and coding the specified format data into a video stream according to preset coding parameters and preset screenshot interval duration.
In an alternative implementation, the apparatus further comprises (not shown in fig. 3):
a pip display module, configured to obtain a video stream currently captured by a camera after the sending module 320 converts the text picture into a video stream; and carrying out picture-in-picture synthesis on the acquired video stream and the converted video stream, and outputting and displaying the picture-in-picture synthesized video stream.
In an alternative implementation, the apparatus further comprises (not shown in fig. 3):
a split-screen display module, configured to select one sub-interface from multiple split-screen interfaces supported by the device after the sending module 320 converts the text image into a video stream; and configuring the video stream obtained by conversion to the sub-interface for output and display.
The specific details of the implementation process of the functions and actions of each unit in the above device are the implementation processes of the corresponding steps in the above method, and are not described herein again.
For the device embodiment, since it basically corresponds to the method embodiment, reference may be made to the partial description of the method embodiment for relevant points. The above-described embodiments of the apparatus are merely illustrative, and 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 a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the application. One of ordinary skill in the art can understand and implement it without inventive effort.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus comprising the element.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (10)
1. A text remote preview method is applied to a portable device, and comprises the following steps:
screenshot is carried out on a text area in an editing state at present to obtain a text picture;
and converting the text picture into a video stream, and sending the converted video stream to a remote device, so that the remote device outputs and displays the video stream.
2. The method of claim 1, wherein converting the text picture into a video stream comprises:
decoding the text picture into specified format data;
and coding the specified format data into a video stream according to preset coding parameters and preset screenshot interval duration.
3. The method of claim 1, wherein after converting the text picture into a video stream, the method further comprises:
acquiring a video stream currently acquired by a camera;
and carrying out picture-in-picture synthesis on the acquired video stream and the converted video stream, and outputting and displaying the picture-in-picture synthesized video stream.
4. The method of claim 1, wherein after converting the text picture into a video stream, the method further comprises:
selecting a sub-interface from multi-split screen interfaces supported by the equipment;
and configuring the video stream obtained by conversion to the sub-interface for output and display.
5. A text remote preview apparatus, applied to a portable device, the apparatus comprising:
the screenshot module is used for screenshot the text area in the current editing state to obtain a text picture;
and the sending module is used for converting the text picture into a video stream and sending the converted video stream to remote equipment so that the remote equipment outputs and displays the video stream.
6. The apparatus according to claim 5, wherein the sending module is specifically configured to decode the text picture into data of a specified format during the process of converting the text picture into the video stream; and coding the specified format data into a video stream according to preset coding parameters and preset screenshot interval duration.
7. The apparatus of claim 5, further comprising:
the picture-in-picture display module is used for acquiring the video stream currently acquired by the camera after the text picture is converted into the video stream by the sending module; and carrying out picture-in-picture synthesis on the acquired video stream and the video stream obtained by conversion, and outputting and displaying the picture-in-picture synthesized video stream.
8. The apparatus of claim 5, further comprising:
the split screen display module is used for selecting one sub-interface from the multi-split screen interfaces supported by the equipment after the text picture is converted into the video stream by the sending module; and configuring the video stream obtained by conversion to the sub-interface for output and display.
9. A portable device, characterized in that the device comprises a readable storage medium and a processor;
wherein the readable storage medium is configured to store machine executable instructions;
the processor configured to read the machine executable instructions on the readable storage medium and execute the instructions to implement the steps of the method of any one of claims 1-4.
10. A readable storage medium having stored therein computer instructions which are executed to implement the steps of the method of any one of claims 1 to 4.
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| CN114065705A (en) * | 2020-07-31 | 2022-02-18 | 西安诺瓦星云科技股份有限公司 | Program text processing method and device |
| CN114598893B (en) * | 2020-11-19 | 2024-04-30 | 京东方科技集团股份有限公司 | Text video realization method and system, electronic equipment and storage medium |
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