CN101425082A - Video file content determining method and system - Google Patents
Video file content determining method and system Download PDFInfo
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- CN101425082A CN101425082A CNA2008101858103A CN200810185810A CN101425082A CN 101425082 A CN101425082 A CN 101425082A CN A2008101858103 A CNA2008101858103 A CN A2008101858103A CN 200810185810 A CN200810185810 A CN 200810185810A CN 101425082 A CN101425082 A CN 101425082A
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Abstract
The embodiment of the invention relates to a confirming method and a system for a video file. The method comprises the following steps: obtaining the characteristic information of a first video file and obtaining the characteristic information of a second video file or the characteristic information index of multiple video files, comparing the characteristic information of the first video with the characteristic information of the second video file or the characteristic information index, and confirming that if video contents of the first video file and the second video file are same according to the comparison result of the characteristic information of the first video and the characteristic information of the second video file or if the video files have video files of which the contents are the same as that of the first video file according to the comparison result of the characteristic information of the first video file and the characteristic information index.
Description
Technical field
The present invention relates to multimedia technology field, relate in particular to a kind of video file content and determine method and system.
Background technology
Along with the continuous progress that the internet develops rapidly and Online Video is served, propagating a large amount of video files on the internet to offer user's download and online watching.Because the production method of video file and publisher's is different, the video file that has identical content in a large number often occurs with different forms, as different video formats, different video size etc., will there be the identical video file of a large amount of contents like this on the internet.
The bulk redundancy existence of video file can bring many problems, for example, when the video file that has identical content in a large number that search engine will search is presented to the user, the user need select the video file that will download and watch, and a large amount of identical video files of content will inevitably add the degree of difficulty that the large user selects.Again for example, in the Online Video website, the video file that content is identical not only can influence user's selection, and can strengthen the operation cost of Online Video website, as increasing hardware store resource etc.
Therefore, urgently need to solve to have the problem of the identical video file of a large amount of contents, and will address this problem, need at first to determine whether the content of two video files is identical, and then the video file that has same video content in definite magnanimity video file.
At present, determine whether the content of video file is identical, what mainly adopt is the method for artificial judgment, promptly by manually video file being checked whether the content of judging these video files is identical, it expends time in and manpower, and cost is higher, and efficient is lower.
Summary of the invention
The embodiment of the invention provides a kind of definite video file content identical method and system, whether whether it is identical to solve two video file contents of manual type differentiation, or exist in a plurality of video file and the problem of waiting to judge that the identical video file of video file content is wasted time and energy and efficient is not high.
The embodiment of the invention provides a kind of video file content to determine method, and this method comprises:
Obtain the characteristic information of first video file, and obtain the characteristic information of second video file or the characteristic information index of a plurality of video files;
With the characteristic information of described first video file, compare with the characteristic information or the described characteristic information index of described second video file;
Characteristic information according to described first video file determines with the comparative result of the characteristic information of described second video file whether the video content of described first video file and described second video file is identical, or determines with the comparative result of described characteristic information index whether the video file identical with the content of described first video file is arranged in described a plurality of video file according to the characteristic information of described first video file.
The embodiment of the invention also provides a kind of video file content to determine system, and this system comprises:
Acquiring unit is used to obtain the characteristic information of first video file, and obtains the characteristic information of second video file or the characteristic information index of a plurality of video files;
Comparing unit, be used for the characteristic information of described first video file and the characteristic information or the described characteristic information index of described second video file are compared, and determine with the comparative result of the characteristic information of described second video file whether the video content of described first video file and described second video file is identical, or determine with the comparative result of described characteristic information index whether the video file identical with the content of described first video file is arranged in described a plurality of video file according to the characteristic information of described first video file according to the characteristic information of described first video file.
In the embodiment of the invention, by obtaining the characteristic information of video file, the characteristic information of video file is compared, and determine according to comparative result whether the video content of video file is identical, reached the purpose whether whether two video file contents of automatic quick identification have the video file identical with the video content of video file to be compared in identical or a plurality of video file.
Description of drawings
The method flow synoptic diagram that Fig. 1 provides for the embodiment of the invention;
The system architecture synoptic diagram that Fig. 2 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of method and system of definite video file content, it can judge whether two video file contents are identical by the characteristic information of video file, or judges whether have video file identical with video file content to be compared in a plurality of video files.
Referring to Fig. 1, the method for definite video file content that the embodiment of the invention provides specifically may further comprise the steps:
Step 10: obtain the characteristic information of first video file, and obtain the characteristic information of second video file or the characteristic information index of a plurality of video files.
The characteristic information of comparison of video file can have different manner of comparison, and whether when for example only needing relatively two video file contents identical, whether the characteristic information that can directly compare two video files is identical; Need to judge when whether having video file identical in a plurality of video files with video file content to be compared, can with the characteristic information of this file to be compared successively with described a plurality of video files in the characteristic information of each video file compare, also can set up the characteristic information index to a plurality of video files earlier, for example the video file that characteristic information is identical in a plurality of video files being gathered is a class, then all kinds of pairing characteristic informations have been formed described characteristic information index jointly, the characteristic information of file to be compared is compared and searches with described characteristic information index respectively, as adopt binary chop etc., so can improve the efficient of comparison.Binary chop at first compares the key word and the search key of ordered list centre position record, if both are equal, then searches successfully; Otherwise utilize the centre position record that table is divided into former and later two sublists,, otherwise further search back one sublist if the key word of centre position record is then further searched last sublist greater than search key.
Described characteristic information and described characteristic information index can be content identification (Content ID, CID) or combination in any in sign indicating number, file description information, the content characteristic information.Wherein, file description information can be file title, file layout, file size, title keyword, collection number, video duration etc.Content characteristic information is the characteristic information of video frame images, and it includes but not limited to: color histogram, color convergence vector, color set, color moment, color correlogram, gray level co-occurrence matrixes, geometric method (as Voronio gridiron pattern characteristic method), modelling (typical method is the random field models method), Tamura textural characteristics, autoregression texture model, wavelet transformation, boundary characteristic method, Fourier's shape description symbols method, geometric parameter method and shape invariance square etc.
Content identification CID sign indicating number be can the interconnected internet resource of unique identification the character string of forming by several bytes, content identification CID sign indicating number is according to the algorithm that is provided with the content-data of file to be calculated the back to obtain.The algorithm that is provided with can be the arbitrary algorithm that different data processing is obtained different results, Hash (hash) algorithm for example, hash algorithm can adopt md5-challenge (Message-DigestAlgorithm5, MD5), MD4, and Secure Hash Algorithm (Secure Hash Algorithm, SHA), (Secure Hash Standard, SHS) scheduling algorithm is as formula for Secure Hash Algorithm.The acquisition of content identification CID sign indicating number includes but not limited to following two kinds of methods: first kind, the partial data of extraction document carries out Hash (hash) computing with the partial data that extracts, with the value of operation result as the CID sign indicating number of this document.Such as, can extract the data of the front 32k byte of video file, middle 32k byte and afterbody 32k byte, the data extracted by Hash operation, are calculated a value as md5, with the value of this value as the CID sign indicating number of video file; Second kind, the total data of file is carried out Hash operation, with the value of operation result as the CID sign indicating number of this video file.
Preferably, when needs are determined whether the video file identical with first video file content is arranged in a plurality of video files, can be a plurality of video files and set up the video resource feature database, preferably, can be main video resource feature and set up index, conveniently search fast.Wherein, unique major key that content identification CID sign indicating number can be used as the video features resource exists, and is used for video file of unique identification.Features such as video title keyword, collection number, content characteristic information can be set up index in the storehouse.For example, can extract the video title keyword, set up the video file that comprises this video title keyword in the title and the corresponding relation of this video title keyword,, then can find the video file that comprises this title keyword fast then according to this video title keyword.
The concrete grammar that obtains the file description information of video file has multiple, below with wherein two kinds be illustrated:
First kind, the webpage at video file place can comprise the file description information of this video file usually, for example file title, file layout, file size etc. can be obtained the file description information of video file from the webpage at video file place by resource capture program such as Web Spider (Spider); The resource capture program is adopted as website configuration webpage template usually or obtains the relevant informations such as title, file layout, director, performer and download link of video resource by the mode of program intellectual analysis from webpage.For example the video resource of certain video resource website is introduced in the page, the text of text " film name: " back is the title of video resource, the text of text " director: " back is director's title of this film etc., then can be according to this rule configuration webpage template, the video resource relevant information that the resource capture program is introduced the video resource of described certain video resource website in the page according to this template grasps and preserves.
Second kind, the file header of video file generally can comprise the file description information of video file, therefore can obtain the file description information of this video file from the file header of video file.
Preferably, can set up the video information java standard library in advance, be used for the file description information of the video file of storage standards.File description information can comprise title, director, performer, content introduction, the video distribution time of video, information such as video playback duration.The video information java standard library grasps specialty video display website, internet by the spider program and obtains video display information, adopts the auxiliary video display information standard storehouse of upgrading of human-edited's mode simultaneously.After the file description information of tentatively having obtained video file, can carry out standardization to file description information according to the video information java standard library.For example extract title keyword, simultaneously other information such as director, performer are carried out the difference contrast, the information of video file is carried out standardization according to video title that tentatively obtains and the title in the video information java standard library.
The concrete grammar that obtains the content characteristic information of video file is: at first, according to predetermined frame intercepting rule, the corresponding position of this intercepting rule predetermining intercepts the frame of video of the corresponding frame number of this intercepting rule predetermining in video file; Then, calculate the content characteristic information of each frame of video intercept out, with the content characteristic information that calculates content characteristic information as video file.Described predetermined frame intercepting rule can be: from a certain moment of video file, intercept the frame of video of fixed qty at interval by preset time.Need to prove,, then preferably, before the content characteristic information of calculating frame of video, the frame of video of each video file of intercepting can be converted into consistent video resolution because the size of the video resolution of video file correspondence often has difference.
The embodiment of the invention can determine that whether video file is identical, is elaborated to method for determination of amount to color histogram information and/or color convergence at this according to the content characteristic information of video file.At first the relation to color space, color histogram and RGB color space and hsv color space describes:
Color space is can arrange and be contained in the space according to certain order for the shades of colour that makes frame of video, and three independent parameters of 3-D walls and floor and color is mapped, and makes each color that the locus of a correspondence all be arranged.Conversely, a specific color is all represented in any point in coordinate space, and this space is called color space.Color space is three-dimensional, is the coordinate representation of color.Adopting different coordinate systems, is different with the position of a kind of color in coordinate space.
Color histogram, description be different colours shared ratio in the whole video frame, and and be indifferent to every kind of color location in space.Calculate color histogram and color space need be divided into several little color space subregions, each subregion becomes a piece of color histogram.The pixel count that drops in each color space subregion by the calculating color can obtain color histogram then.
The RGB color space is to obtain color miscellaneous by variation and their stacks each other to red (R), green (G), blue (B) three Color Channels.The RGB color space uses the RGB model to distribute one 0～255 intensity level in the scope as the RGB component of each pixel in the image.In the hsv color space, H, S, V represent form and aspect, saturation degree and brightness respectively.The transformational relation of hsv color space and rgb space is as follows:
S＝1-3×[min(R，G，B)]/(R+B+G)
V＝(R+B+G)/3
Method to the color histogram that how to calculate the frame of video that intercepts out is specifically described below:
At first, the color space of frame of video is converted into the color space (as the HSV space) of vision equilibrium; Then, the hsv color space is quantized into the plurality of colors space partition zone by a dimensioning, for each color space subregion, calculate the pixel count of each color in frame of video that this color space section post comprises, the pixel count addition that calculates is obtained pixel count in this color space subregion; After obtaining the pixel count in each color space subregion, be in the two-dimensional coordinate space of coordinate axis, drawing the color histogram that obtains frame of video with the pixel count in color space subregion and the color space subregion.
After obtaining the color histogram of frame of video, can obtain the color convergence vector of frame of video according to color histogram.Concrete, at first, the color space of frame of video is converted into the color space (as the HSV space) of vision equilibrium; Then, the hsv color space is quantized into the plurality of colors space partition zone by a dimensioning; Then, for each color space subregion: find the continuum that comprises the color in this color space subregion in the frame of video, if the pixel count of this continuum is greater than the polymerization threshold value of setting, then with the polymerization pixel of the pixel in this continuum as this color space subregion, otherwise, with the non-polymeric pixel of the pixel in this continuum as this color space subregion; Calculate the polymerization pixel in this color space subregion and the number of non-polymeric pixel, with the number of the polymerization pixel that calculates and non-polymeric pixel polymerization vector as this color space subregion; At last, the polymerization vector of each color space subregion has constituted the color convergence vector of frame of video.
The color convergence vector of frame of video can be expressed as:＜(α
1, β
1), (α
2, β
2) ..., (α
N, β
N), α wherein
iAnd β
iThe polymerization pixel in histogrammic i the color space sub-district of difference representative color and the number of non-polymeric pixel.
The computing method of color histogram and color convergence vector are described with example below:
Hsv color space after supposing to transform, the span of its three color components is respectively H:[0,360 °), S:[0,1], V:[0,1], the hsv color space can quantize as follows:
General hsv color space can be divided into respectively by three coordinate axis that (h, s v) etc., suppose that (h, s v) are respectively (8,3,3), (18,3,3) and (12,5,5) five equilibrium mode.If (h, s v)=(8,3,3), are about to the H axle and are divided into 8 parts, the interval of every part of correspondence be [0 °, 45 °), [45 °, 90 °) ....[315 °, 360 °), its value can be by 0,1,2 ... 7 expressions.Similarly, the S axle is divided into 3 parts, and the V axle is divided into 3 parts.For any 1 a on the frame of video, if (h1, s1 v1), then can be mapped to it in corresponding interval by the division of the quantized interval of HSV and go in its expression in the hsv color space.As (h, s v)=(92 °, 0.73,0.36), then through after quantizing, can be expressed as (2,2,1).
For a frame of video, at first need this frame of video to choose suitable quantization scale then by hsv color space representation (needing sometimes to transform frame of video to the conversion formula in hsv color space) by the RGB color space, as (18,3,3), with the HSV space quantization is 162 color space sub-districts, simultaneously with each pixel mapping of image in corresponding interval, as pixel (92 °, 0.73,0.36), result after its mapping is (4,2,2).Need to add up the pixel count that drops on each quantized interval then, pixel (92 °, 0.73,0.36) corresponding quantitative value (4,2,2) for example, its numeration adds 1.Can obtain the color histogram after the quantification of this frame of video this moment.The color histogram of the frame of video in corresponding moment of two video files is compared, whether then can draw video frame content identical, if two video files are all identical in the video frame content that a plurality of moment corresponding intercepted respectively, can determine that then the content of two video files is identical.
Same, after the hsv color amount of space with frame of video changes into sub-district, plurality of colors space, just can calculate the color convergence vector of frame of video, suppose in certain frame of video, for i color space subregion, its color that comprises is black a and two colors of black b, with black a and two colors of black b as a color, polymerization threshold value to this color settings is 20, three pixel counts that find this color in frame of video are greater than 20 continuum, its pixel count that comprises is respectively 30,65,90, and the rest of pixels of this color adds up to 60, then (α
i, β
i) can be expressed as (185,60), and the like, so the color convergence vector that obtains can be expressed as＜(a
1, b
1), (185,60) ... (a
k, b
k) .. 〉.After having obtained the color convergence vector, it is compared, if identical, then the content of two frame of video is identical.
In step 11 and the step 12, described the characteristic information of first video file and the characteristic information of second video file are compared, and the video content of determining first video file and second video file according to comparative result whether identical mode can have multiplely, describe with wherein four kinds below:
First kind, determine with content characteristic information whether first video file is identical with the video content of second video file, and idiographic flow is as follows by comparing the CID sign indicating number:
Step S01: relatively whether first video file is identical with the CID sign indicating number of second video file, if identical, determines that then first video file is identical with the video content of second video file, and flow process finishes; Otherwise, to step S02;
Step S02: relatively whether first video file is identical with the content characteristic information of second video file, if it is identical, determine that then first video file is identical with the video content of second video file, otherwise, determine that the video content of first video file and second video file is inequality.
Second kind, determine by comparison document descriptor and content characteristic information whether first video file is identical with the video content of second video file, and idiographic flow is as follows:
Step S11: relatively whether first video file is identical with the file description information of second video file, if identical, then arrives step S12; Otherwise, determine that the video content of first video file and second video file is inequality, flow process finishes;
Step S12: relatively whether first video file is identical with the content characteristic information of second video file, if it is identical, determine that then first video file is identical with the video content of second video file, otherwise, determine that the video content of first video file and second video file is inequality.
The third, determine by comparing content characteristic information whether first video file is identical with the video content of second video file, concrete grammar is: relatively whether first video file is identical with the content characteristic information of second video file, if it is identical, determine that then first video file is identical with the video content of second video file, otherwise, determine that the video content of first video file and second video file is inequality.
The 4th kind, determine with content characteristic information whether first video file is identical with the video content of second video file, and idiographic flow is as follows by comparison CID sign indicating number, file description information:
Step S21: relatively whether first video file is identical with the CID sign indicating number of second video file, if identical, determines that then first video file is identical with the video content of second video file, and flow process finishes; Otherwise, to step S22;
Step S22: relatively whether first video file is identical with the file description information of second video file, if identical, then arrives step S23; Otherwise, determine that the video content of first video file and second video file is inequality, flow process finishes;
Step S23: relatively whether first video file is identical with the content characteristic information of second video file, if it is identical, determine that then first video file is identical with the video content of second video file, otherwise, determine that the video content of first video file and second video file is inequality.
In step 11 and the step 12, judge first video file whether with a plurality of video files in the mode of certain video file with identical content can have multiplely, describe with wherein four kinds below:
First kind, determine whether there be the video file identical in a plurality of video files, idiographic flow is as follows with first video file content by the CID and the content characteristic information of first video file:
Step S31: search the CID sign indicating number identical with the CID sign indicating number of first video file in described characteristic information index, if find, then determine to have the video file identical with first video file content in a plurality of video files, flow process finishes; Otherwise, to step S32;
Step S32: in described characteristic information index, search the content characteristic information identical,, then determine to exist in the video resource feature database video file identical with this video file content if find with the content characteristic information of first video file.Preferably, the relevant information of first video file can be added in the video resource feature database, be the first video file mark video file identical sign ID identical simultaneously with described content, be used for determining the identical content video file, sign ID can be any symbol that the different content video file is differentiated of can be used for such as digital alphabet, for example can be that all videos of A are given sign ID " 001 " with video content, and be that all videos of B are given sign ID " 003 " video content.If do not find the video file identical with this video file content, can be only will the relevant information adding video resource feature database of new video file in, and set up a new sign ID.
Second kind, by the video that the file description information and the content characteristic information of first video file determine whether to exist in a plurality of video files identical content, idiographic flow is as follows:
Step S41: in described characteristic information index, search the file description information identical, if can find, then arrive step S42 with the file description information of first video file; Otherwise, determining not exist in a plurality of video files the video file identical with first video file content, preferably, the relevant information (can comprise sign ID) of first video file can be charged in the video resource feature database, flow process finishes.
Step S42: in described characteristic information index, search the content characteristic information identical with the content characteristic information of first video file, if can find, then determine to exist in a plurality of video files the video file identical with first video file content, preferably, the relevant information of first video file can be added in the video resource feature database, and give the video file same sign ID identical with described content; Otherwise, the first video file relevant information is added in the video resource feature database, and gives first video file new sign ID.
The third determines whether there is the identical content video file in a plurality of video files by the content characteristic information of first video file.Concrete grammar is: search the content characteristic information identical with the content characteristic information of first video file in described characteristic information index, if find, then determine to exist in a plurality of video files the video file identical with the content of first video file, otherwise, do not exist.Preferably, the relevant information of first video file can be charged in the video resource feature database, the while is new logo ID more.
The 4th kind, determine whether there is the identical content video file in a plurality of video files by CID sign indicating number, file description information and the content characteristic information of first video file.Idiographic flow is as follows:
Step S51: search the CID sign indicating number identical with the CID sign indicating number of first video file in described characteristic information index, if find, then determine to have the video file identical with first video file content in a plurality of video files, flow process finishes; Otherwise, to step S52;
Step S52: in described characteristic information index, search the file description information identical (title keyword, collection number etc.),, then arrive step S53 if find with the file description information of first video file; Otherwise, determine not exist in a plurality of video files the video file identical with first video file, preferably, the relevant information of first video file can be charged in the video resource feature database, and be set up new sign ID for it, flow process finishes.
Step S53: in described characteristic information index, search the content characteristic information identical,, then determine to exist in a plurality of video files the record identical with this video file content if find with the content characteristic information of first video file, otherwise, do not exist.Preferably, the relevant information of first video file can be added in the video resource feature database, and new logo ID more.
Preferably, when in determining described a plurality of video files, not having the video file identical, then the characteristic information of first video file can be added in the video resource feature database, and set up new characteristic information index with first video file; Maybe different with the first video file CID sign indicating number when determining to exist in described a plurality of video files, but during the identical video file of content, in the characteristic information adding video resource feature database with first video file.Can obtain CID sign indicating number difference but the identical a plurality of video file resources of actual content this moment.The new characteristic information index of described foundation for the unexistent characteristic information of other video files in the video resource feature database that first video file is comprised as new aspect indexing, also can be first video file and set up the sign ID that is used for the identification video file content.
Preferably, after the video content of determining described first video file and described second video file is identical, this method further comprises: select a video file according to the file selection rule of setting from described first video file and described second video file, the video file of selecting is preserved; Or
In determining described a plurality of video files, exist after the video file identical with first video file content, this method further comprises: select a video file from described first video file video file identical with described content, the video file of selecting is preserved.
According to embodiment of the invention method after the video content of determining two or more video files is identical, provide the server end of video content also to preserve according to the file selection rule of setting selected part video file from the identical video file of these contents, thereby save the storage resources of server end, for the user provides quality higher video file.For example, in order to provide sharpness higher video to the user, can the enactment document selection rule be the video file of choosing the file size maximum, or the highest video file of resolution, only preserve in the identical video file of content maximum or the highest video file of resolution according to this rule server end, thereby saved the storage resources of server end, and can provide sharpness higher video file for the user.Perhaps, server end can be preserved the identical a plurality of video files of content, but when the user provides video file, according to the file selection rule of setting selected part video file and offer the user from the identical a plurality of video files of content.
In search engine web site, after the video content of determining two or more video files according to the inventive method is identical, the video file that content is identical is set up incidence relation, for example, the resource name of the video file that content is identical and/or key word are made as identical, perhaps for the identical video file of content identical and unique content-label are set.So, the user is when inputted search keyword search video file, and search engine searches also returns to the user as Search Results with resource name and/or key word other video file identical with this video file behind the video file that comprises searching key word; Perhaps, search engine searches is searched content-label other video file identical with the content-label of this video file behind the video file that comprises searching key word, other video file is also returned to the user as Search Results.Like this, reached the effect that the video file that content is identical returns to the user simultaneously.The client at user place is when showing the video file that search engine returns, can subregion or sub-category demonstration, the video file ordering that content is identical shows together or with same classification, thereby make things convenient for the user to select, resource name and/or the identical video file differentiation of key word can be the identical video file of content, the video file differentiation that perhaps will comprise the identical content mark is the identical video file of content.
For video website, the user is when the uploaded videos file, system compares video file of uploading and the video file of having preserved, judge whether the video file of uploading is identical with the content of one or more video files of having preserved, if, then refusal is accepted this upload file, thereby avoids storing the identical video file of a large amount of contents, saves storage space.
Referring to Fig. 2, the embodiment of the invention also provides a kind of video file content to determine system, and this system comprises acquiring unit 20, comparing unit 21, wherein:
Acquiring unit 20 is used to obtain the characteristic information of first video file, and obtains the characteristic information of second video file or the characteristic information index of a plurality of video files;
Comparing unit 21, be used for the characteristic information of described first video file and the characteristic information or the described characteristic information index of described second video file are compared, and determine with the comparative result of the characteristic information of described second video file whether the video content of described first video file and described second video file is identical, or determine with the comparative result of described characteristic information index whether the video file identical with the content of described first video file is arranged in described a plurality of video file according to the characteristic information of described first video file according to the characteristic information of described first video file.
Preferably, described acquiring unit 20 can comprise one or more in identification code acquiring unit 30, descriptor acquiring unit 31 or the content characteristic acquiring unit 32, wherein:
Identification code acquiring unit 30 is used to obtain the content identification CID sign indicating number in the characteristic information index of the content identification CID sign indicating number of described first video file and described second video file or a plurality of video files;
Content characteristic acquiring unit 32 is used to obtain the content characteristic information in the characteristic information index of the content characteristic information of described first video file and described second video file or a plurality of video files.
Preferably, content characteristic acquiring unit 32 can comprise interception unit and computing unit, wherein:
Interception unit is used for the one or more frame of video according to predefined frame intercepting rule described first video file of intercepting and described second video file;
Computing unit is used to calculate the content characteristic information of one or more frame of video of described first video file of intercepting, with the content characteristic information that the calculates content characteristic information as described first video file.
When being used for characteristic information with the characteristic information of described first video file and described second video file and comparing, different embodiment can be arranged, comparing unit 21 can comprise any in first module, Unit second, Unit the 3rd, the Unit the 4th, wherein:
As first kind of embodiment, comparing unit 21 comprises first module 33, whether with the CID sign indicating number of described second video file identical, if identical, determine that then described first video file is identical with the video content of described second video file if being used for more described first video file; Otherwise whether more described first video file is identical with the content characteristic information of described second video file, if identical, determines that then described first video file is identical with the video content of described second video file.
As second kind of embodiment, comparing unit 21 comprises second unit 34, whether with the file description information of described second video file identical, if inequality, determine that then the video content of first video file and second video file is inequality if being used for more described first video file; Otherwise whether more described first video file is identical with the content characteristic information of described second video file, if identical, determines that then described first video file is identical with the video content of described second video file.
As the third embodiment, comparing unit 21 comprises the 3rd unit 35, whether with the content characteristic information of described second video file identical, if identical, determine that then first video file is identical with the video content of second video file if being used for more described first video file.
As the 4th kind of embodiment, comparing unit 21 comprises the 4th unit 36, whether with the CID sign indicating number of described second video file identical, if identical, determine that then described first video file is identical with the video content of described second video file if being used for more described first video file; Otherwise whether more described first video file is identical with the file description information of described second video file, if inequality, determines that then the video content of described first video file and described second video file is inequality; Otherwise whether more described first video file is identical with the content characteristic information of described second video file, if identical, determines that then described first video file is identical with the video content of described second video file.
When comparing unit 21 is used for the characteristic information of described first video file and described characteristic information index compared, different embodiment can be arranged, comparing unit 21 can comprise any in Unit the 5th, Unit the 6th, Unit the 7th, the Unit the 8th, wherein
As first kind of embodiment, comparing unit 21 comprises the 5th unit 37, be used for searching the CID sign indicating number identical,, then determine to exist in a plurality of video files the video file identical with first video file content if find with the CID sign indicating number of first video file at described characteristic information index; Otherwise, in described characteristic information index, search the content characteristic information identical with the content characteristic information of first video file, if find, then determine to exist in the video resource feature database video file identical with this video file content.
As second kind of embodiment, comparing unit 21 comprises the 6th unit 38, be used for searching the file description information identical with the file description information of first video file at described characteristic information index, if do not find, then determine not have the video file identical in a plurality of video files with first video file content; Otherwise, in described characteristic information index, search the content characteristic information identical with the content characteristic information of first video file, if find, then determine to exist in a plurality of video files the video file identical with first video file content.
As the third embodiment, comparing unit 21 comprises the 7th unit 39, be used for searching the content characteristic information identical with the content characteristic information of first video file at described characteristic information index, if find, there is video file in then definite a plurality of video files with the first video file identical content.
As the 4th kind of embodiment, comparing unit 21 comprises the 8th unit 40, be used for searching the CID sign indicating number identical,, then determine to exist in a plurality of video files the video file identical with first video file content if find with the CID sign indicating number of first video file at described characteristic information index; Otherwise, in described characteristic information index, search the file description information identical with the file description information of first video file, if do not find, then determine not have the video file identical in a plurality of video files with first video file; Otherwise, in described characteristic information index, search the content characteristic information identical with the content characteristic information of first video file, if find, then determine to exist in a plurality of video files the record identical with this video file content.
Preferably, the characteristic information of described a plurality of video files is stored in the video resource feature database, for example is the video resource property data base of a vod service provider, has stored the characteristic information that can carry out the video file of program request for the user in this database.This system can further comprise:
Preferably, this system also can further comprise:
Preferably, this system can further comprise:
When having the video file identical with first video file content in determining described a plurality of video files, the video file that described first video file is identical with described content is set up incidence relation; Search the identical video file of described first video file or described content according to the video file searching request that receives after, video file described first video file is identical with described content according to described incidence relation returns as Search Results.
To sum up in the scheme that the embodiment of the invention provides, by obtaining the characteristic information of video file, the characteristic information of video file is compared, and determine according to comparative result whether the video content of video file is identical, reached whether the video file purpose identical with the video content of video file to be compared is arranged in two video files of automatic quick identification or a plurality of video file.
And, according to the inventive method, provide the server end of video content can only preserve partial video file in the identical video file of content, thereby save the storage resources of server end, provide video file by being required to be the user.
In search engine web site, the video file that content is identical is set up incidence relation, the user is when inputted search keyword search video file, all video files that search engine will have incidence relation return to the user as Search Results, having reached the client video file that content is identical that the video file that content is identical returns to user's effect user place simultaneously shows in the same area or with same classification, and can be, thereby make things convenient for the user to select the other relevant information that shows each video file of the identical video file of content (for example the resolution of video etc.).
For video website, but the video file that filter user repeats to upload, thus avoid storing the identical video file of a large amount of contents, save storage space.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (18)
1, a kind of video file content is determined method, it is characterized in that, this method comprises:
Obtain the characteristic information of first video file, and obtain the characteristic information of second video file or the characteristic information index of a plurality of video files;
With the characteristic information of described first video file, compare with the characteristic information or the described characteristic information index of described second video file;
Characteristic information according to described first video file determines with the comparative result of the characteristic information of described second video file whether the video content of described first video file and described second video file is identical, or determines with the comparative result of described characteristic information index whether the video file identical with the content of described first video file is arranged in described a plurality of video file according to the characteristic information of described first video file.
2, the method for claim 1 is characterized in that, described characteristic information is:
One or combination in any in content identification CID sign indicating number, file description information, the content characteristic information, described content identification CID sign indicating number obtains for according to pre-defined algorithm video file being calculated the back, and described pre-defined algorithm is for to handle the algorithm that obtains different results to the content-data of different video files.
3, method as claimed in claim 2 is characterized in that, described content characteristic information is:
Color histogram information and/or color convergence vector.
4, the method for claim 1 is characterized in that, when described characteristic information is content characteristic information, describedly obtains the characteristic information of first video file and the characteristic information of second video file comprises:
One or more frame of video according to predefined frame intercepting rule described first video file of intercepting and described second video file;
Calculate the content characteristic information of one or more frame of video of described first video file of intercepting, with the content characteristic information that calculates content characteristic information as described first video file;
Calculate the content characteristic information of one or more frame of video of described second video file of intercepting, with the content characteristic information that calculates content characteristic information as described second video file.
5, method as claimed in claim 2, it is characterized in that, described the characteristic information of described first video file and the characteristic information of described second video file are compared, whether the video content of determining described first video file and described second video file according to comparative result identical comprising:
Whether more described first video file is identical with the CID sign indicating number of described second video file, if identical, determines that then described first video file is identical with the video content of described second video file; Otherwise whether more described first video file is identical with the content characteristic information of described second video file, if identical, determines that then described first video file is identical with the video content of described second video file; Perhaps
Whether more described first video file is identical with the file description information of described second video file, if inequality, determines that then the video content of first video file and second video file is inequality; Otherwise whether more described first video file is identical with the content characteristic information of described second video file, if identical, determines that then described first video file is identical with the video content of described second video file; Perhaps
Whether more described first video file is identical with the content characteristic information of described second video file, if identical, determines that then first video file is identical with the video content of second video file; Perhaps
Whether more described first video file is identical with the CID sign indicating number of described second video file, if identical, determines that then described first video file is identical with the video content of described second video file; Otherwise whether more described first video file is identical with the file description information of described second video file, if inequality, determines that then the video content of described first video file and described second video file is inequality; Otherwise whether more described first video file is identical with the content characteristic information of described second video file, if identical, determines that then described first video file is identical with the video content of described second video file.
6, the method for claim 1, it is characterized in that, described characteristic information with described first video file, compare with described characteristic information index, determine whether the video file identical with the content of described first video file is arranged, comprising in described a plurality of video file according to comparative result:
In described characteristic information index, search the CID sign indicating number identical,, then determine to exist in a plurality of video files the video file identical with first video file content if find with the CID sign indicating number of first video file; Otherwise, in described characteristic information index, search the content characteristic information identical with the content characteristic information of first video file, if find, then determine to exist in the video resource feature database video file identical with this video file content; Perhaps
In described characteristic information index, search the file description information identical,, then determine not have the video file identical in a plurality of video files with first video file content if do not find with the file description information of first video file; Otherwise, in described characteristic information index, search the content characteristic information identical with the content characteristic information of first video file, if find, then determine to exist in a plurality of video files the video file identical with first video file content; Perhaps
In described characteristic information index, search the content characteristic information identical,, have video file in then definite a plurality of video files with the first video file identical content if find with the content characteristic information of first video file; Perhaps
In described characteristic information index, search the CID sign indicating number identical,, then determine to exist in a plurality of video files the video file identical with first video file content if find with the CID sign indicating number of first video file; Otherwise, in described characteristic information index, search the file description information identical with the file description information of first video file, if do not find, then determine not have the video file identical in a plurality of video files with first video file; Otherwise, in described characteristic information index, search the content characteristic information identical with the content characteristic information of first video file, if find, then determine to exist in a plurality of video files the record identical with this video file content.
7, method as claimed in claim 6 is characterized in that:
The characteristic information of described a plurality of video files is stored in the video resource feature database;
When in determining described a plurality of video files, not having the video file identical with first video file content, then the characteristic information of first video file is added in the video resource feature database, and set up the sign ID that new characteristic information index or foundation are used for the identification video file content; Maybe different with the first video file CID sign indicating number when determining to exist in described a plurality of video files, but during the identical video file of content, in the characteristic information adding video resource feature database with first video file.
8, the method for claim 1 is characterized in that:
After the video content of determining described first video file and described second video file is identical, this method further comprises: select a video file according to the file selection rule of setting from described first video file and described second video file, the video file of selecting is preserved; Or
In determining described a plurality of video files, exist after the video file identical with first video file content, this method further comprises: select a video file from described first video file video file identical with described content, the video file of selecting is preserved.
9, the method for claim 1 is characterized in that, after the video content of determining described first video file and described second video file was identical, this method further comprised:
Described first video file and described second video file are set up incidence relation;
Search engine returns described first video file and described second video file according to described incidence relation after searching described first video file or described second video file according to the video file searching request that receives as Search Results.
10, method as claimed in claim 9 is characterized in that, after described first video file and described second video file were returned as Search Results, this method further comprised:
Described first video file that client will receive and described second video file show in ordering together or with same classification.
11, a kind of video file content is determined system, it is characterized in that, this system comprises:
Acquiring unit is used to obtain the characteristic information of first video file, and obtains the characteristic information of second video file or the characteristic information index of a plurality of video files;
Comparing unit, be used for the characteristic information of described first video file and the characteristic information or the described characteristic information index of described second video file are compared, and determine with the comparative result of the characteristic information of described second video file whether the video content of described first video file and described second video file is identical, or determine with the comparative result of described characteristic information index whether the video file identical with the content of described first video file is arranged in described a plurality of video file according to the characteristic information of described first video file according to the characteristic information of described first video file.
12, system as claimed in claim 11 is characterized in that, described acquiring unit comprises one or more in identification code acquiring unit, descriptor acquiring unit or the content characteristic acquiring unit, wherein:
The identification code acquiring unit is used to obtain the content identification CID sign indicating number in the characteristic information index of the content identification CID sign indicating number of described first video file and described second video file or a plurality of video files;
The descriptor acquiring unit is used to obtain the file description information in the characteristic information index of the file description information of described first video file and described second video file or a plurality of video files;
The content characteristic acquiring unit is used to obtain the content characteristic information in the characteristic information index of the content characteristic information of described first video file and described second video file or a plurality of video files.
13, system as claimed in claim 12 is characterized in that, described content characteristic acquiring unit comprises:
Interception unit is used for the one or more frame of video according to predefined frame intercepting rule described first video file of intercepting and described second video file;
Computing unit is used to calculate the content characteristic information of one or more frame of video of described first video file of intercepting, with the content characteristic information that the calculates content characteristic information as described first video file; Calculate the content characteristic information of one or more frame of video of described second video file of intercepting, with the content characteristic information that calculates content characteristic information as described second video file.
14, system as claimed in claim 11 is characterized in that, described comparing unit comprises any in first module, Unit second, Unit the 3rd, the Unit the 4th, wherein:
First module, whether with the CID sign indicating number of described second video file identical, if identical, determine that then described first video file is identical with the video content of described second video file if being used for more described first video file; Otherwise whether more described first video file is identical with the content characteristic information of described second video file, if identical, determines that then described first video file is identical with the video content of described second video file;
Unit second, whether with the file description information of described second video file identical, if inequality, determine that then the video content of first video file and second video file is inequality if being used for more described first video file; Otherwise whether more described first video file is identical with the content characteristic information of described second video file, if identical, determines that then described first video file is identical with the video content of described second video file;
Unit the 3rd, whether with the content characteristic information of described second video file identical, if identical, determine that then first video file is identical with the video content of second video file if being used for more described first video file;
Unit the 4th, whether with the CID sign indicating number of described second video file identical, if identical, determine that then described first video file is identical with the video content of described second video file if being used for more described first video file; Otherwise whether more described first video file is identical with the file description information of described second video file, if inequality, determines that then the video content of described first video file and described second video file is inequality; Otherwise whether more described first video file is identical with the content characteristic information of described second video file, if identical, determines that then described first video file is identical with the video content of described second video file.
15, system as claimed in claim 11 is characterized in that, described comparing unit comprises any in Unit the 5th, Unit the 6th, Unit the 7th, the Unit the 8th, wherein:
Unit the 5th is used for searching the CID sign indicating number identical with the CID sign indicating number of first video file at described characteristic information index, if find, then determines to exist in a plurality of video files the video file identical with first video file content; Otherwise, in described characteristic information index, search the content characteristic information identical with the content characteristic information of first video file, if find, then determine to exist in the video resource feature database video file identical with this video file content;
Unit the 6th is used for searching the file description information identical with the file description information of first video file at described characteristic information index, if do not find, then determines not have the video file identical with first video file content in a plurality of video files; Otherwise, in described characteristic information index, search the content characteristic information identical with the content characteristic information of first video file, if find, then determine to exist in a plurality of video files the video file identical with first video file content;
Unit the 7th is used for searching the content characteristic information identical with the content characteristic information of first video file at described characteristic information index, if find, has the video file with the first video file identical content in then definite a plurality of video files;
Unit the 8th is used for searching the CID sign indicating number identical with the CID sign indicating number of first video file at described characteristic information index, if find, then determines to exist in a plurality of video files the video file identical with first video file content; Otherwise, in described characteristic information index, search the file description information identical with the file description information of first video file, if do not find, then determine not have the video file identical in a plurality of video files with first video file; Otherwise, in described characteristic information index, search the content characteristic information identical with the content characteristic information of first video file, if find, then determine to exist in a plurality of video files the record identical with this video file content.
16, system as claimed in claim 11 is characterized in that:
The characteristic information of described a plurality of video files is stored in the video resource feature database;
This system further comprises: storage unit, be used for when there be not the video file identical with first video file in definite described a plurality of video files, add the characteristic information of first video file in the video resource feature database or set up the sign ID that is used for the identification video file content; Or be used for when determining that described a plurality of video files exist different with the first video file CID sign indicating number, but during the identical video file of content, in the characteristic information adding video resource feature database with first video file.
17, system as claimed in claim 11 is characterized in that, this system further comprises:
Integral unit, be used for when the video content of determining described first video file and described second video file is identical, from described first video file and described second video file, select a video file according to the file selection rule of setting, the video file of selecting is preserved; Or
When in determining described a plurality of video files, having the video file identical, from described first video file video file identical, select a video file, the video file of selecting is preserved with described content with first video file content.
18, system as claimed in claim 11 is characterized in that, this system further comprises:
Cluster cell is used for when the video content of determining described first video file and described second video file is identical described first video file and described second video file being set up incidence relation; After searching described first video file or described second video file, described first video file and described second video file are returned as Search Results according to described incidence relation according to the video file searching request that receives; Or
When having the video file identical with first video file content in determining described a plurality of video files, the video file that described first video file is identical with described content is set up incidence relation; Search the identical video file of described first video file or described content according to the video file searching request that receives after, video file described first video file is identical with described content according to described incidence relation returns as Search Results.
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|---|---|---|---|
| CNA2008101858103A CN101425082A (en) | 2008-12-15 | 2008-12-15 | Video file content determining method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101858103A CN101425082A (en) | 2008-12-15 | 2008-12-15 | Video file content determining method and system |
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| CN101425082A true CN101425082A (en) | 2009-05-06 |
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| CNA2008101858103A Pending CN101425082A (en) | 2008-12-15 | 2008-12-15 | Video file content determining method and system |
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