CN109408671A - The searching method and its system of specific objective - Google Patents
The searching method and its system of specific objective Download PDFInfo
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- CN109408671A CN109408671A CN201810813065.6A CN201810813065A CN109408671A CN 109408671 A CN109408671 A CN 109408671A CN 201810813065 A CN201810813065 A CN 201810813065A CN 109408671 A CN109408671 A CN 109408671A
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- specific objective
- cdn node
- characteristic value
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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
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
-
- 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
- H04N21/232—Content retrieval operation locally within server, e.g. reading video streams from disk arrays
-
- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The present invention provides the searching method and its system of a kind of specific objective, belongs to field of communication technology.The searching method of specific objective of the invention receives the request that specific objective is searched for transmitted by user, in index data base；The specific objective is analyzed, to extract the characteristic value of the specific objective；The characteristic value and multiple characteristic values in the index data base of each CDN node are compared, to judge that the specific objective whether there is in the CDN node；If the specific objective is present in CDN node, confirmation message is sent to user, so that user obtains video clip of the specific objective in index data base by the CDN node；Conversely, then stopping comparing.
Description
Technical field
The invention belongs to fields of communication technology, and in particular to a kind of searching method and its system of specific objective.
Background technique
Currently, being based on the video searching method master of content distributing network (CDN, Content Delivery Network)
Will there are two types of: one is based on EPG (electronic program guides) provide navigation interface, the navigation interface have function of search,
I.e. user can be searched out by inputting the specific objective required to look up on the navigation interface in massive video library
Multiple videos relevant to the specific objective；Another kind be based on browser searching method (such as: Google search, Baidu are searched
Rope), mainly pass through search engine, to help user to search out multiple views relevant to it is required to look up specific objective
Frequently.
But inventors have found that two kinds of above-mentioned video searching methods are only user and search out multiple needs to look into it
The relevant video of the specific objective looked for, cannot help user search out the specific objective occur in each video it is specific
Position, that is to say, that when user merely desires to check the video clip for having specific objective, such as: user A merely desire to viewing one or
When having the video clip of star B in multiple videos, which can only be to obtained using above-mentioned video searching method
Multiple videos are checked one by one, just can determine that star B appears in the specific location in these videos, this checks step very
It is cumbersome.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art, providing one kind can quickly, accurately
Ground searches out the searching method and its system of the specific objective of video clip of the specific objective in index data base.
The searching method that technical solution used by present invention problem is a kind of specific objective is solved, user is received
Request that is transmitted, searching in index data base specific objective；
The specific objective is analyzed, to extract the characteristic value of the specific objective；
The characteristic value and multiple characteristic values in the index data base of each CDN node are compared, to judge
Stating specific objective whether there is in the CDN node；
If the specific objective is present in CDN node, confirmation message is sent to user, so that user is described in
CDN node obtains video clip of the specific objective in index data base；Conversely, then stopping comparing.
Preferably, multiple characteristic values by the index data base of the characteristic value and each CDN node carry out
Comparison, to judge that the specific objective is specifically included with the presence or absence of the step in the CDN node:
The characteristic value is sent to CDN node search module；
According to the network address for each CDN node being stored in the CDN node search module, by the characteristic value
It is sent to each CDN node；
By multiple characteristic values in the index data base of each CDN node, carried out pair with the characteristic value received by it
Than to judge that the specific objective whether there is in the CDN node.
Preferably, multiple characteristic values in the index data base by the characteristic value and each CDN node into
Row comparison, before judging the specific objective with the presence or absence of the step in the CDN node, further includes:
The characteristic value is formatted, so as to the index of the characteristic value and each CDN node after converting
Multiple characteristic values in database compare.
Preferably, when the specific objective be people when, characteristic value include eyebrow, glasses, nose, mouth, ear
Piece；When specific objective be vehicle when, characteristic value include license plate, vehicle, color；When specific objective is video clip,
Characteristic value includes the video frame of video clip beginning.
Preferably, the method for extracting the characteristic value of the specific objective includes: fourier transform method, window Fourier
Transformation, Wavelet Transform, least square method, edge direction histogram method, based in Tamura texture characteristic extracting method appoint
It anticipates one kind.
Solve the search system that technical solution used by present invention problem is a kind of specific objective, comprising:
Receiving module, for receiving the request for searching for specific objective transmitted by user, in index data；
Characteristics extraction module, for analyzing the specific objective, to extract the feature of the specific objective
Value；
Contrast module, for carrying out multiple characteristic values in the index data base of the characteristic value and each CDN node
Comparison, to judge that the specific objective whether there is in the CDN node；
Information sending module, for sending confirmation message to user when the specific objective is present in CDN node,
So that user obtains video clip of the specific objective in index data base by the CDN node.
Preferably, the contrast module includes:
First transmission unit, for the characteristic value to be sent to CDN node search module；
Second transmission unit, for the network according to each CDN node being stored in the CDN node search module
Characteristic value is sent to each CDN node by address；
Comparison unit, for by the characteristic value in the index data base of each CDN node, with the feature received by it
Value compares, to judge that the specific objective whether there is in the CDN node.
Preferably, the search system of specific objective further include: conversion module, for carrying out format to the characteristic value
Conversion.
The invention has the following beneficial effects:
In specific objective searching method in the present invention, user only need to send it to search system by user terminal
The specific objective of required search can quickly and accurately get the video clip for having the specific objective, Ye Jizhun
Specific location of the specific objective in one or more videos is really oriented, without as regarding in the prior art to every
The mode that frequency is watched one by one, searched, recorded, can just obtain specific position of the specific objective in one or more videos
It sets, that is to say, that specific objective searching method step provided by the present invention is simple and convenient for operation.
Detailed description of the invention
Fig. 1 is the flow chart of the searching method of the specific objective of the embodiment of the present invention 1；
Fig. 2 is the schematic diagram of the search system of the specific objective of the embodiment of the present invention 2.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention with reference to the accompanying drawing and is embodied
Present invention is further described in detail for mode.
Embodiment 1:
As shown in Figure 1, the searching method specifically includes the present embodiment provides a kind of searching method of specific objective:
S1, the request that specific objective is searched for transmitted by user, in index data base is received.
Specifically, the present embodiment with the search system (hereinafter referred to as search system) of specific objective be executing subject, this
When, search system can receive user by searching transmitted by user terminal (such as: mobile phone, computer), in index data base
The request of rope specific objective.Wherein, the characteristic target in the present embodiment can for specific people, specific vehicle or some
Video scene etc., it is not limited here.
It should be noted that store a large amount of video in index data base in the present embodiment, each video passes through
Different scenes in each video are differentiated first, are extracted, then compiled to each scene by characterization
Number, to obtain each scene distinctive scene number in some video, wherein the scene number is specifically by two parts group
It is that the scene appears in serial number in the video at, a part, another part is the Video coding for the video frame that scene starts,
Such as: video A includes scene a, scene b and scene c, wherein the video of scene a number is that 011,111 (wherein, 011 is
Scene a appears in the serial number in video A, and 111 be the Video coding for the video frame that scene a starts)；The video of scene b is numbered
089,342 (wherein, 089 appears in the serial number in video A for scene b, 342 compile for the video of the scene b video frame started
Code)；The video number of scene c, which is 231,564, (wherein, 231 appears in the serial number in video A for scene c, 564 be scene c
The Video coding of the video frame of beginning).Subsequently, to the specific objective in each video, different scenes number scene
It is identified, and extracts the characteristic value of the specific objective；Finally, according to said extracted as a result, the name of video-scene is compiled
Number-characteristic value of specific objective is associated correspondence, and be made into index to be stored in index data base, in order to quickly from
The specific objective that user needs to search for is inquired in index data base.
Wherein, the method for extracting the characteristic value of specific objective includes: fourier transform method, window Fourier transform, small echo
Converter technique, least square method, edge direction histogram method, based on any one in Tamura texture characteristic extracting method.When
So, the method for characteristic value being extracted from characteristic target is also not limited to above-mentioned several method, and this is no longer going to repeat them.
S2, specific objective is analyzed, to extract the characteristic value of specific objective.
Specifically, the user according to accessed by step S1 needs the characteristic target searched for, search system can be by Fu
Leaf transformation method, Wavelet Transform, least square method, edge direction histogram method, is based on Tamura line at window Fourier transform
Any one method for extracting characteristic value in feature extracting method is managed, characteristic target is analyzed, it is specific to extract this
Clarification of objective value.
It should be noted that when specific objective is specific people, characteristic value may include the eyebrow of people, eyes,
The features such as nose, mouth, ear；When specific objective be specific vehicle when, characteristic value may include the license plate of the vehicle, vehicle
Type and the color of vehicle etc.；When specific objective be video clip when, characteristic value may include what video clip started
Video frame etc..
S3, characteristic value is formatted.
Specifically, for convenient for by the extracted characteristic value of step S2 with it is multiple in the index data base of each CDN node
Characteristic value compares, and search system can format the extracted characteristic value of step S2, so that the lattice of this feature value
The multiple characteristic value formats stored in formula and the index data base of each CDN node are consistent.
S4, characteristic value and multiple characteristic values in the index data base of each CDN node are compared, to judge spy
It sets the goal with the presence or absence of in CDN node.
Specifically, step S4 includes the following steps:
Characteristic value after step S3 conversion is sent to CDN node searching module, CDN section by S41, search system
The point search module meeting available multiple CDN nodes of periodic search, and the multiple CDN nodes searched are stored in this module
In index data base.Wherein, the period of periodic search mentioned herein can be one minute, one hour, one day etc., such as:
CDN node search module can scan for available CDN node every one minute, to update the CDN node stored in it letter
Breath.Above content it is to be mentioned that available CDN node refer to: the CDN node is online, that is to say, that works as CDN
Node be in upgrading, maintenance etc. not presence when, this CDN node is just disabled CDN node.
S42, basis are stored in the network address of each CDN node in CDN node search module, and search system can incite somebody to action
User needs the characteristic value for the specific objective searched for be sent to each CDN node.
S43, in this step, first search system can characteristic values transmitted by receiving step S42；Then, the search system
System can compare multiple characteristic values in the index data base of each CDN node with the characteristic value received by it, with
Judge that specific objective whether there is in CDN node, when determining specific objective and being present in CDN node, then holds immediately
Row step S5；Conversely, then stopping comparing.
S5, when specific objective is present in CDN node, search system can to user terminal send confirmation message, so as to
User obtains video clip of the specific objective in index data base by CDN node.Wherein, which includes: CDN
There is position in video for the first time in the network address of node, name-scene number-specific objective of video.
To sum up, in specific objective searching method in the present embodiment, user only need to be by user terminal to search system
The specific objective searched for required for it is sent, the video clip for having the specific objective can be quickly and accurately got,
Namely specific location of the specific objective in one or more videos is accurately positioned out, without as right in the prior art
The mode that every video is watched one by one, searched, recorded can just obtain the specific objective in one or more videos
Specific location, that is to say, that specific objective searching method step provided by the present embodiment is simple and convenient for operation.
Embodiment 2:
As shown in Fig. 2, can be used provided by embodiment 1 the present embodiment provides a kind of search system of specific objective
Searching method accurately and rapidly searches the video clip for having specific objective in index data base, the search system
It specifically includes: receiving module, characteristics extraction module, contrast module, information sending module.
Specifically, receiving module is used to receive the request for searching for specific objective transmitted by user, in index data；
Characteristics extraction module is for analyzing specific objective, to extract the characteristic value of specific objective；Contrast module is used for will be special
Value indicative is compared with multiple characteristic values in the index data base of each CDN node, to judge that specific objective whether there is
In CDN node；Information sending module is used for when specific objective is present in CDN node, sends confirmation message to user,
So that user obtains video clip of the specific objective in index data base by CDN node.
Wherein, the present embodiment is preferred, and contrast module includes: the first transmission unit, the second transmission unit, comparison unit；
Specifically, the first transmission unit is used to characteristic value being sent to CDN node search module；Second transmission unit is used for basis and deposits
The network address for storing up each CDN node in CDN node search module, is sent to each CDN node for characteristic value；Comparison
Unit is used to compare the characteristic value in the index data base of each CDN node with the characteristic value received by it, with
Judge that specific objective whether there is in CDN node.
Wherein, the present embodiment is preferred, the search system of specific objective provided by the present embodiment, further includes: modulus of conversion
Block is used to format characteristic value, in order to the index number in the characteristic value and each CDN node after converting
It is compared according to multiple characteristic values in library.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary reality that uses
Mode is applied, however the present invention is not limited thereto.For those skilled in the art, the present invention is not being departed from
Spirit and essence in the case where, various changes and modifications can be made therein, these variations and modifications are also considered as guarantor of the invention
Protect range.
Claims (8)
1. a kind of searching method of specific objective, which is characterized in that
Receive the request that specific objective is searched for transmitted by user, in index data base；
The specific objective is analyzed, to extract the characteristic value of the specific objective；
The characteristic value and multiple characteristic values in the index data base of each CDN node are compared, to judge the spy
It sets the goal with the presence or absence of in the CDN node；
If the specific objective is present in CDN node, confirmation message is sent to user, so that user is saved by the CDN
Point obtains video clip of the specific objective in index data base；Conversely, then stopping comparing.
2. the searching method of specific objective according to claim 1, which is characterized in that it is described by the characteristic value with it is each
Multiple characteristic values in the index data base of CDN node compare, to judge that the specific objective whether there is in the CDN
Step in node specifically includes:
The characteristic value is sent to CDN node search module；
According to the network address for each CDN node being stored in the CDN node search module, the characteristic value is sent to
Each CDN node；
It by multiple characteristic values in the index data base of each CDN node, is compared with the characteristic value received by it, to sentence
The specific objective that breaks whether there is in the CDN node.
3. the searching method of specific objective according to claim 1, which is characterized in that described by the characteristic value and each
Multiple characteristic values in the index data base of a CDN node compare, to judge that the specific objective whether there is in described
Before step in CDN node, further includes:
The characteristic value is formatted, so as to the index data of the characteristic value and each CDN node after converting
Multiple characteristic values in library compare.
4. the searching method of specific objective according to claim 1, which is characterized in that when the specific objective is people,
Its characteristic value includes eyebrow, glasses, nose, mouth, ear；When specific objective be vehicle when, characteristic value include license plate, vehicle
Type, color；When specific objective be video clip when, characteristic value include video clip beginning video frame.
5. the searching method of specific objective according to claim 1, which is characterized in that extract the feature of the specific objective
The method of value includes: fourier transform method, window Fourier transform, Wavelet Transform, least square method, edge direction histogram
Method, based on any one in Tamura texture characteristic extracting method.
6. a kind of search system of specific objective characterized by comprising
Receiving module, for receiving the request for searching for specific objective transmitted by user, in index data；
Characteristics extraction module, for analyzing the specific objective, to extract the characteristic value of the specific objective；
Contrast module, for the characteristic value and multiple characteristic values in the index data base of each CDN node to be compared,
To judge that the specific objective whether there is in the CDN node；
Information sending module, for sending confirmation message to user when the specific objective is present in CDN node, so as to
User obtains video clip of the specific objective in index data base by the CDN node.
7. the search system of specific objective according to claim 6, which is characterized in that the contrast module includes:
First transmission unit, for the characteristic value to be sent to CDN node search module；
Second transmission unit is stored in the network address of each CDN node in the CDN node search module for basis,
Characteristic value is sent to each CDN node；
Comparison unit, for being carried out with the characteristic value received by it by the characteristic value in the index data base of each CDN node
Comparison, to judge that the specific objective whether there is in the CDN node.
8. the search system of specific objective according to claim 6, which is characterized in that further include: conversion module, for pair
The characteristic value formats.
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