CN109218743B - Information calibration method and system based on live program content - Google Patents
Information calibration method and system based on live program content Download PDFInfo
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- CN109218743B CN109218743B CN201811081754.9A CN201811081754A CN109218743B CN 109218743 B CN109218743 B CN 109218743B CN 201811081754 A CN201811081754 A CN 201811081754A CN 109218743 B CN109218743 B CN 109218743B
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/233—Processing of audio elementary streams
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/23418—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
- H04N21/2353—Processing of additional data, e.g. scrambling of additional data or processing content descriptors specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
Abstract
The information calibration method based on the live program content acquires, slices and analyzes the streaming media information of the live program in real time by setting the information calibration server to obtain the content information, matches the content information with the established retrieval tag naming rule base, then immediately names the retrieval tag and sends the retrieval tag to the client, so that the client can timely receive the retrieval tag of the live program and store the retrieval tag in an electronic program list of the client for later use, and a user can directly search the target live program content for watching according to the specific requirement of the user on the live program content through the generated retrieval tag.
Description
Technical Field
The invention relates to a method for identifying and analyzing the content of a live program.
Background
For live broadcast or on-demand programs such as television or network, when a user needs to watch a specific program, the user generally searches for a proper program through an EPG (electronic program guide) which is provided by a television or network operator for the user, and the program guides provide all television program information within a period of time in a channel-time mode, so that a service browsing function is realized, and various services provided by the operator are displayed in a program guide mode.
The EPG includes a program playlist function, and for on-demand programs, the user can select a program to be on-demand in the playlist, and the program list includes information about the program.
Although the optional functions of the EPG are relatively rich, it may include a program additional information function, such as presenting a program episode introduction and classifying programs, and a search function, such as searching by a director, a title number, an ID, an initial, and the like, but generally only applies to on-demand programs.
For live programs, unlike on-demand programs which have become historical information, the live programs can be retrieved by a user through artificial rich retrieval tags, and due to the randomness and instantaneity of the live programs, the contents of the live programs are unpredictable. Although the EPG can provide a certain program plot or simple program tag information, the problem that the information capacity of the retrieval tag is small and the retrieval tag is easy to distort still exists, so that it is difficult for the user to search for the target live program through the specific retrieval tag, or the user cannot retrieve the required live program through the EPG due to the temporary change of the live program, and the user may miss the changed live program.
Disclosure of Invention
The invention provides a calibration method and a calibration system which can judge a retrieval tag based on content information of a live program so that a user can retrieve a target live program through the retrieval tag with larger information capacity.
An information calibration method based on live program content is characterized by comprising the following steps:
s1, setting an information calibration server to collect live broadcast streaming media of live broadcast programs, and establishing a retrieval tag naming rule base in the information calibration server;
s2, the information calibration server slices the live program at a certain time interval and a certain time axis length to form live streaming media slices;
s3, the information calibration server analyzes the content of the live broadcast streaming media slice to obtain the content information;
s4, the information calibration server matches the content information with a search tag naming rule base to obtain a search tag;
s5, the information calibration server side sends the retrieval tag to the client side for storage;
the step S2 further includes a step S21: regularly collecting electronic program lists of an EPG server through an information calibration server; the step S4 further includes a step S41: comparing the retrieval tag with the classification information tag of the corresponding live program in the electronic program list collected in the step S21; step S42, judging whether the retrieval tag is the subset of the classified information tag, if so, entering step S5, and if not, entering step S2;
the execution times of step S42 is preset, and when the execution times of step S42 reaches the preset value, the program change flag is attached to the actually obtained search tag, and the process proceeds to step S5.
The information calibration method based on the live program content acquires, slices and analyzes the streaming media information of the live program in real time by setting the information calibration server to obtain the content information, matches the content information with the established retrieval tag naming rule base, then immediately names the retrieval tag and sends the retrieval tag to the client, so that the client can timely receive the retrieval tag of the live program and store the retrieval tag in an electronic program list of the client for later use, and a user can directly search the target live program content for watching according to the specific requirement of the user on the live program content through the generated retrieval tag.
In the information calibration method based on the live program content, the step S2 further includes a step S21 of periodically collecting the electronic program list of the EPG server through an information calibration server; the step S4 further includes a step S41, in which the search tag is compared with the classification information tag of the corresponding live program in the electronic program list collected in the step S21; and step S42, judging whether the retrieval tag is the subset of the classified information tags, if so, entering step S5, and if not, entering step S2.
The electronic program list of the EPG server is regularly collected through the information calibration server, after the information calibration server obtains the retrieval tag, the retrieval tag is compared with the classification information tag of the corresponding live program in the electronic program list collected in the step S21 to determine whether the electronic program list is a subset of the classification information tag, so that the tag judgment of the information calibration server is avoided due to the fact that non-program content such as advertisements inserted in the live program interfere, and the obtained tag information is more accurate.
In the information calibration method based on the live program content, the execution times of step S42 can be preset, and when the execution times of step S41 reaches the preset value, the actually obtained retrieval tag is attached with a program change identifier, and the process proceeds to step S5.
By presetting the execution times of the step S41, when the execution times reaches the preset value, the program change identifier is attached to the actually obtained retrieval tag, and the process proceeds to the step S5, so that the user can know the program content change in time, the user is prevented from not retrieving the required live program through the EPG, and the user is prevented from missing the changed live program due to waiting.
Drawings
Fig. 1 is a schematic diagram of the information calibration system.
Fig. 2 is a flowchart of the information calibration system during information calibration.
Detailed Description
As shown in fig. 1, the information targeting system includes a live broadcast server for providing live broadcast streaming media, an EPG server for providing electronic program listings, a client for receiving the live broadcast streaming media and the electronic program listings, and an information targeting server for targeting a search tag, where the information targeting server includes a time slicing unit for slicing the live broadcast streaming media at intervals by a certain time axis length; the slice analysis unit is used for receiving the streaming media slice transmitted by the time slice unit and analyzing the content of the streaming media slice to obtain content information; the retrieval tag naming unit is provided with a retrieval tag naming rule base and is used for matching the content information with the retrieval tag naming rule base to obtain a retrieval tag; and the retrieval tag sending unit is used for sending the retrieval tag obtained by the retrieval tag naming unit to the client. The tag checking unit is used for comparing the retrieval tag with the classification information tag of the corresponding live program in the electronic program list so as to judge whether the retrieval tag is a subset of the classification information tag; and a slicing loop unit for presetting the execution times of step S42, and transmitting the actual search tag obtained by the search tag naming unit to the search tag transmitting unit when the execution times of step S42 reaches the preset value.
The slice analysis unit comprises a voice recognition unit for recognizing the voice content in the streaming media slice and generating voice content information; the character recognition unit is used for recognizing the character content in the streaming media slice to generate character content information; the face recognition unit is provided with a face database and is used for recognizing the face in the streaming media slice, comparing the face with the face database to confirm the identity information of the streaming media slice and generating identity content information; and the information filtering unit is provided with a content information filtering rule base and is used for filtering the content information which accords with the content information filtering rule in the streaming media slice.
The following explains a detailed process of content information targeting of a live program.
First, the existing EPG electronic program guide provides a detailed live program table of the current day, and performs label classification on the live programs in the program table, for example, according to a content classification method, the live programs are classified into news programs, education programs, literature programs, and service programs.
In particular, the time interval for slicing the streaming media is preferably at least longer than the advertisement duration of the prime time period to avoid interfering with the determination of the retrieval tag. When the advertisement time is in the slicing state, the judgment of the retrieval tag of the advertisement segment can be verified through the tag verification unit, the retrieval tag judgment information of the advertisement segment does not belong to the subset of the EPG program classification information tag, so that the retrieval tag judged based on the advertisement segment cannot be generated and sent to the client, the slicing frequency in the time interval is set through the slice circulation unit, the tag verification unit is stopped to continue to verify after the slicing of the streaming media reaches the specified frequency, the final retrieval tag is sent to the client, and therefore the current live program can be judged to be not corresponding to the EPG program classification information tag, and therefore the audience can know that the live program changes.
When the information calibration system judges the retrieval tag of a financial news live program, firstly, the news program which is live is sliced, the generated streaming media segment is sent to a time slice analysis unit for analysis, a character recognition unit recognizes characters in each frame of picture of the streaming media segment, the extracted character information is used as character content information, for example, the news live program reports news about the 'upper certificate index', a character recognition module recognizes the 'upper certificate index real-time broadcast' key word in a caption to be used as character content information, the character information is sent to a retrieval tag naming unit, the retrieval tag is directly named as the 'upper certificate index' through a retrieval tag naming rule base and then is compared with the classification information tag of the program corresponding to the EPG, if the corresponding program is classified into news, the upper certificate index can be used as a subset of the news, the tag of the "proof index" may be sent to the client, and the user may learn which live channel is reporting news about the proof index by searching the "proof index" through the client.
For most news programs, scroll bars are arranged below the news programs for scrolling and playing other news information, and the scroll information belongs to information noise when being subjected to character recognition relative to the programs which are in live broadcasting, so that an information filtering unit can be established for filtering by setting a filtering rule aiming at the situation, the slice analyzing unit can accurately obtain label information, and the filtering rule can be updated in real time according to actual needs.
Furthermore, the voice recognition unit may also be used to recognize the voice of the news announcer to obtain the voice content information.
And for the interview program, the identity content information can be given by the face recognition unit to perform face recognition on interview guests.
Claims (3)
1. An information calibration method based on live program content is characterized by comprising the following steps:
s1, setting an information calibration server to collect live broadcast streaming media of live broadcast programs, and establishing a retrieval tag naming rule base in the information calibration server;
s2, the information calibration server slices the live program at a certain time interval and a certain time axis length to form live streaming media slices;
s3, the information calibration server analyzes the content of the live broadcast streaming media slice to obtain the content information;
s4, the information calibration server matches the content information with a search tag naming rule base to obtain a search tag;
s5, the information calibration server side sends the retrieval tag to the client side for storage;
the step S2 further includes a step S21: regularly collecting electronic program lists of an EPG server through an information calibration server; the step S4 further includes a step S41: comparing the retrieval tag with the classification information tag of the corresponding live program in the electronic program list collected in the step S21; step S42, judging whether the retrieval tag is the subset of the classified information tag, if so, entering step S5, and if not, entering step S2;
the execution times of step S42 is preset, and when the execution times of step S42 reaches the preset value, the program change flag is attached to the actually obtained search tag, and the process proceeds to step S5.
2. An information calibration system based on the information calibration method of claim 1, comprising a live broadcast server for providing live broadcast streaming media, an EPG server for providing electronic program lists, a client for receiving the live broadcast streaming media and the electronic program lists, and an information calibration server for calibrating the search tags, characterized in that: the information calibration server comprises a first information calibration server and a second information calibration server,
the live broadcast streaming media acquisition unit is used for acquiring live broadcast streaming media of a live broadcast server in real time;
the time slicing unit is used for slicing the live broadcast streaming media at intervals by a certain time axis length; the slice analysis unit is used for receiving the streaming media slice transmitted by the time slice unit and analyzing the content of the streaming media slice to obtain content information;
the retrieval tag naming unit is provided with a retrieval tag naming rule base and is used for matching the content information with the retrieval tag naming rule base to obtain a retrieval tag;
the retrieval tag sending unit is used for sending the retrieval tag obtained by the retrieval tag naming unit to the client;
the information calibration server also comprises a label checking unit which compares the retrieval label with the classification information label of the corresponding live program in the electronic program list to judge whether the retrieval label is a subset of the classification information label;
and a slicing loop unit for presetting the execution times of step S42, and when the execution times of step S42 reaches a preset value, transmitting the search tag actually obtained by the search tag naming unit to the search tag transmitting unit with a program variation flag attached.
3. The information calibration system of claim 2, wherein: the slice analysis unit comprises a voice recognition unit, a slice analysis unit and a slice analysis unit, wherein the voice recognition unit is used for recognizing the voice content in the streaming media slice and generating voice content information; the character recognition unit is used for recognizing the character content in the streaming media slice to generate character content information; the face recognition unit is provided with a face database and is used for recognizing the face in the streaming media slice, comparing the face with the face database to confirm the identity information of the streaming media slice and generating identity content information; and the information filtering unit is provided with a content information filtering rule base and is used for filtering the content information which accords with the content information filtering rule in the streaming media slice.
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