CN102467552B - Internet device with copyright protection function and copyright protection method - Google Patents
Internet device with copyright protection function and copyright protection method Download PDFInfo
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- 238000010606 normalization Methods 0.000 claims abstract description 13
- 238000004364 calculation method Methods 0.000 claims description 8
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Abstract
The invention is applicable to the technical field of copyright protection, and provides an internet device with a copyright protection function. The device comprises a video data receiving unit, a video cut unit, a video normalization unit, a frame cut unit, a video feature computing unit, a video feature library and a video feature comparison unit, wherein the video data receiving unit is used for receiving video data; the video cut unit is used for cutting a section of the video data; the video normalization unit is used for normalizing the cut section, so as to enable the processed video to achieve the given resolution; the frame cut unit is used for receiving the normalized section and cutting the specific area of each frame; the video feature computing unit is used for receiving the data cut by the frame cut unit and computing the video feature; the video feature library is used for storing the video feature; and the video feature comparison unit is used for comparing the computed video feature with the stored video feature, controlling the video data receiving unit to stop receiving the video data when the computed video feature exists in the video feature library, and otherwise, controlling the video data receiving unit to continue receiving the data. By using the internet device, the infringement can be avoided when the infringement action has not happened, so that the interest of copyright proprietors can be effectively protected.
Description
Technical field
The invention belongs to copyright protection technology field, relate in particular to a kind of network equipment and copy-right protection method with copyright protection function.
Background technology
Along with the development of network technology, the various network devices being connected with internet has also obtained very fast development, and as Web TV (IPTV), computer, mobile phone etc., speed of development is particularly swift and violent.Online video class program can be downloaded or watch to these network equipments easily from the Internet, as film, DV short-movie, TV series, lecture etc.
In the situation that resource is more and more abundanter, just relate to the copyright problem of video content, a lot of content suppliers can not guarantee that its video content providing has obtained copyright owner's license.Many times, the video content of propagating on network does not pass through copyright owner's authorization, content supplier, website particularly, just by network, to users, provide these video contents, invaded the possessory copyright of video content, damaged their deserved interests.But in this case, whether the user often unclear video content that also cannot judge that own institute downloads or watches encroaches right, this is encouraging the abuse of content supplier virtually, makes copyright owner's rights and interests be subject to very big infringement.
In order to prevent infringement, the technology extensively adopting is that then copyright management tissue will comprise copyright owner's information, copyright authorization information by registering to copyright management tissue, a series of information relevant to copyright such as authorized permission person's information are made into digital watermarking, add in video content.Digital watermarking is generally lighter translucent pattern; When playing such as station synchronization, plug the translucent sign of TV station in certain corner, also have a lot of watermarks for being difficult for sensing type digital watermarking, these watermarks are hidden in video, and do not destroy enjoying value, the use value of former data.Digital watermarking is a good method, and it suffices to show that ownership, the authenticity of a digital product, determine property in copyright, determine works authenticity and integrity, confirm licensee, very person is as the checking of court evidence etc.
The user Dou Shi domestic consumer of general networking device, they seldom note its download or whether the content of watching is online that source is legal, and these users also there is no that technological means verifies whether the video content of its download is legal source.Often after user downloads above-mentioned video, could find watermark, at this time, user just recognizes the download of oneself or views and admires online the abuse that has encouraged content supplier; For be difficult for download that sensing type watermark ，Ze domestic consumer cannot judge that content supplier provides completely or online play whether legal.
Except above-mentioned digital watermark, copyright management organizes the copyright feature that also can characterize copyright by other to carry out the mark of copyright information; Even have partial video not comprise any copyright information, in this case, whether network equipment is also necessary to help user to identify the video content that content supplier provides very much legal.
Remove outside the problem that the copyright that exists in above-mentioned network equipment is difficult for judging, for the network equipment as server, also exist while receiving uploaded videos file, cannot judge the whether problem of property infringement of uploaded videos file.
For this reason, be necessary to provide a kind of network equipment and the copy-right protection method that can implement copyright protection, can detect in time whether the video of uploading, downloading or play is online the license that has obtained copyright owner.
Summary of the invention
The object of the present invention is to provide a kind of network equipment and copy-right protection method with copyright protection function, be intended to solve network equipment in prior art and cannot detect the whether problem of property infringement of the video uploading, download or play online.
The present invention is achieved in that a kind of network equipment with copyright protection function, and it comprises: video data receiving element, receiving video data; Video intercepting unit, a video segment of intercepting video data; Video normalization unit, through normalized, makes the video data after processing reach specific resolution to the video segment of intercepting; Frame interception unit, receives the video segment after normalization, and intercepts the specific region of each frame video, and described specific region is the border circular areas of the centre of every frame video; Video features computing unit, the data of received frame interception unit intercepting, calculate video features; Video features computing unit carries out circular ring type by the border circular areas of frame interception unit intercepting and draws piece, each piece in annular region, and its brightness:
Wherein, Q (b, f)=[F (b+1, f)-F (b, f)]-α [F (b+1, f-1)-F (b, f-1)],
Wherein, f represents frame number, and b represents piece, and F (b, f) is the mean flow rate function of b piece in frame f, and α characterizes the significance level of the value in next frame;
Video features storehouse, store video feature, in this video features storehouse, the computing method of video features are identical with the method that video features computing unit calculates video features; Video features comparing unit, the video features that video features computing unit is calculated and the video features of video features library storage compare, and when the feature of this video is present in video features storehouse, controls video data receiving element and stop receiving video data; Otherwise continuation receiving video data.
The data that this video data receiving element receives are the video data uploaded or the video data of download.
One section of video data after these video intercepting unit intercepting head, as the video segment of intercepting, the method for its intercepting head is methods of special characteristic analysis or adopts subtitle recognition method.
Video data after this video normalization cell processing reaches 800*600 resolution.
This video features comparing unit adopts the search method of setting up index to retrieve, when the video features in the video features storehouse retrieving is less than 10% with the video features bit error rate (BER) being retrieved, think that the video features being retrieved is present in video features storehouse.
The present invention also provides a kind of copy-right protection method with the network equipment of copyright protection function, and the method comprises the steps:
Step S1, receiving video data;
Step S2, intercepting video segment, and be normalized;
Step S3, carries out the intercepting of video data to the border circular areas of the centre of each frame of video segment, and calculates video features; Video features computing unit carries out circular ring type by the border circular areas of frame interception unit intercepting and draws piece, each piece in annular region, and its brightness:
Wherein, Q (b, f)=[F (b+1, f)-F (b, f)]-α [F (b+1, f-1)-F (b, f-1)],
Wherein, f represents frame number, and b represents piece, and F (b, f) is the mean flow rate function of b piece in frame f;
Step S4, after the video features of the video features of calculating and storage is compared, according to comparative result, determines whether to continue receiving video data.
This has the network equipment of copyright protection function and copy-right protection method is downloaded, uploaded by calculating or the feature of displaying video, the video features of this video features and storage is compared, if download, upload or the feature of displaying video and the video features of storage match, forbid downloading, uploading or displaying video; Otherwise allow to download, upload or displaying video.By this network equipment, can when abuse not yet occurs, prevent infringement, thereby can effectively protect copyright owner's interests.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of network equipment the first embodiment of the present invention;
Fig. 2 is video intercepting schematic diagram;
Fig. 3 is video segment the first frame, second frame of intercepting, the schematic diagram of the 3rd frame;
Fig. 4 is the structured flowchart of second embodiment of the invention network equipment;
Fig. 5 is the video data schematic diagram that copyright feature calculation unit receives;
Fig. 6 is the structured flowchart of network equipment of the present invention the 3rd embodiment;
Fig. 7 is the process flow diagram of copy-right protection method of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1, Fig. 1 is the structured flowchart of network equipment the first embodiment of the present invention.This network equipment comprises video data receiving element 110, video intercepting unit 120, video normalization unit 130, frame interception unit 140, video features computing unit 150, video features comparing unit 160 and video features storehouse 170.
Video data receiving element 110 receiving video datas, such as server, receive the data that the network equipments such as data that other people upload or IPTV are downloaded or play-overed from server, then, this video data receiving element 110 is delivered to video intercepting unit 120 the video data transmitting receiving.
The video data of the 120 pairs of receptions in video intercepting unit is according to a video segment of ad hoc fashion intercepting, and here the object of intercepting is in order to guarantee that same video, through after different montages, still can be truncated to identical content by this video intercepting unit; Meanwhile, follow-up can avoiding processed whole video, reduces the processing time.At this, can intercept the video content of removing head: the credit part of first identifying video, the method that recognition methods can adopt special characteristic to analyze, for example general film is always to provide title in the part starting, producer, director, acts the leading role etc., at this, take and occur that the fragment before title is head; Or adopt subtitle recognition method, in order to prevent that the word in dialogue is also identified as to credit, conventionally the part of each two field picture bottommost is not in word identification range, but remainder be can be regarded as to the main region of subtitle recognition, when main region in this section occurs that the fragment of word is defined as head; For without title and without the video of captions, can be considered as without head video.After intercepting head, then get the video data of certain hour fragment, as the video segment of intercepting.
The video segment of the 130 pairs of interceptings in video normalization unit, through normalized, makes the video data after processing reach specific resolution.Conventionally the resolution that normalization adopts is lower resolution, as, the resolution of 800*600, will obtain less data volume owing to considering on the one hand, reduce the subsequent treatment time, be that to have height to have low due to the video data resolution receiving on the other hand, lower resolution be set and be convenient to normalization.
The video segment that frame interception unit 140 receives after normalization, carries out the intercepting of video data to the specific region of each frame of video segment.For the content that makes to obtain has higher robustness, intercept the border circular areas of the centre of every frame video, by the border circular areas of the series of frames of this intercepting, as new video data, video intercepting schematic diagram is as shown in Figure 2.Circular region can guarantee that picture, after slight rotation, still can effectively be identified.In Fig. 2, box indicating one two field picture, the region representation that great circle is surrounded is by the region of frame interception unit 140 interceptings.
New video data after frame intercepting processing input to video features computing unit 150, this unit is divided into piece by each frame, due to the intercepting of above-mentioned frame interception unit be border circular areas, its piece division methods as shown in Figure 2, is carried out circular ring type and is drawn piece, each annulus and minimum circle represent the piece of dividing, video features computing unit 150 calculates the mean flow rate of each piece: a, b, c, d, e.Because video data comprises a large amount of frames, the video data after frame intercepting is processed also comprises a large amount of frames, and Fig. 3 schematically shows the first frame, the second frame, the 3rd frame, and the brightness of luminance block is respectively: a1, b1, c1, d1, e1; A2, b2, c2, d2, e2; A3, b3, c3, d3, e3.Yet, during actual computation, thering is predefined specific frame frequency, this predetermined frame frequency is higher than raw data frame frequency, specifically as shown in next line in Fig. 3, the brightness a1 ' of the luminance block of incipient the first frame, b1 ', c1 ', d1 ', e1 ' equals respectively a1, b1, c1, d1, e1, and the second framing bit is between raw data the first frame and the second frame, its brightness a2 ', b2 ', c2 ', d2 ', e2 ' gets respectively corresponding blocks a1, a2; B1, b2; C1, c2; D1, d2; E1, the mean value of e2, the 3rd frame still so calculates.Finally a1 ' to e1 ', a2 ' is to e2 ', a3 ' does certain operations to the brightness of e3 ', draws brightness, as the video features of original video data.This certain operations is as follows:
In frame f, the mean flow rate of b piece is expressed as F (b, f), and f represents frame number, and b represents piece; These luminance block have different energy in the zones of different of frame, also defer to autocorrelation function, namely gray level image has spatial filter and the [α of closed interval [1,1], the gray scale sequence obtaining under the effect of time filter 1], α characterizes the significance level of the value in next frame.Suppose that W1 and W2 derive from region 1 on present frame and 2 mean value, W1 ' and W2 ' are the mean value from respective regions next frame, and its brightness is compared as follows:
N=1....4, (due in example totally 5, in fact piece number should be a lot)
Work as sftFf<sub TranNum="117">1</sub><0 o'clock, bit<sub TranNum="118">n</sub>=0,
Work as sftFf
1>=0 o'clock, bit
n=1,
In the present embodiment, each piece in annular region, its brightness:
Wherein, Q (b, f)=[F (b+1, f)-F (b, f)]-α [F (b+1, f-1)-F (b, f-1)].
Video features computing unit 150 is sent to video features comparing unit 160 by the video features calculating, and video features comparing unit 160 compares the video features in the video features receiving and video features storehouse 170.In video features storehouse 170, store the feature of great lot video files, it is complete that the computing method of this feature and video features computing unit 150 calculate the method for video features, guarantees that like this video features of same video content is consistent.If according to the comparative approach of exhaustive, each value of video features in a video file and the video features in video features storehouse are contrasted one by one, certainly will spend a large amount of time, in the present embodiment, employing is set up the search method of index and is retrieved, and can greatly shorten retrieval time.In addition, video is due to reasons such as montage or other processing, and result for retrieval may not be identical with the video features being retrieved, and therefore, sets specific threshold value, when bit error rate (BER) is less than this threshold value, thinks that two video features are identical.For example, when setting bit error rate (BER) is less than 10%, think that the video features being retrieved is present in video features storehouse, this video belongs to infringement video; Otherwise the video features being retrieved is not present in video features storehouse, this video does not belong to infringement video.
Video features comparing unit 150 occurs comparative result to video data receiving element 110, when the feature of this video is present in video features storehouse, stops receiving associated video data; Otherwise continuation receiving video data.
In sum, this network equipment is calculated and is downloaded, uploads or the feature of displaying video by video features computing unit 150, then by video features comparing unit 160, this video features and the video features being stored in video features storehouse 170 are compared, if download, upload or the feature of displaying video and the video features in video features storehouse 170 match, forbid downloading, uploading or displaying video; Otherwise allow to download, upload or displaying video.By this network equipment, can when abuse not yet occurs, prevent infringement, thereby can effectively protect copyright owner's interests.
Being illustrated in fig. 4 shown below, is the structured flowchart of second embodiment of the invention network equipment.The key distinction of this network equipment and the first embodiment network equipment is: in this device, copyright feature calculation unit 160 comprises sample circuit 161, coding circuit 162, storer 163.The video data that this copyright feature calculation unit 160 receives as shown in Figure 5, this video data normally characterizes with brightness data.This sample circuit 161 is sampled to this video data by specific frequency and step-length; Then the data after sampling are delivered to this coding circuit 162.This coding circuit 162 is connected with this storer 163, in storer 163, stores code book, and in this code book, each code word comprises width, shape and three parameters of amplitude, and each code word has the numbering of its correspondence.Coding circuit 162 receives after sample video data, from the code table of storer 163, find successively each corresponding code word of sampling, and successively numbering corresponding to each code word encoded, this coding, as the video features of video data, inputs to video features comparing unit.In addition, be also necessary to make the computing method of video features in video features storehouse identical with the computing method of this video features computing unit 160.
In the present embodiment, by adopting luma samples, then utilize code book to encode and obtain video features, this method speed is fast, is specially adapted to the video data of online broadcasting to carry out copyright protection.
Refer to Fig. 6, Fig. 6 is the structured flowchart of network equipment of the present invention the 3rd embodiment.The network equipment of this network equipment and the first embodiment is basic identical, and its key distinction is, this network equipment comprises video information receiving end 280.The video features that this video information receiving end 280 receives on automatic network, and the video features receiving is stored to video features storehouse, the source of video features must be the departments such as reliable website ，Ru General Bureau of Radio, Film and Television, Ministry of Culture herein.In addition, video information receiving end 280 also receives all the other video informations of carrying out automatic network, it is not video features, as video name, for non-video feature, this video information receiving end 280, according to the video information of non-video feature, obtains corresponding video data from network or local storage, and calculate the video features of this video data, then video features is inputed in this video features storehouse.
The video information that present embodiment receives from reliable website by video information receiving end 280, the video of the video of forbidding playing as country, contrary to law and public morality etc., then corresponding video features is stored in video features storehouse, forbids downloading or play online corresponding video data from network.
Referring to Fig. 7, is the process flow diagram of copy-right protection method of the present invention.This copyright comprises method and comprises the steps:
Step S1, receiving video data;
Step S2, intercepting video segment, and be normalized;
Step S3, carries out the intercepting of video data to the specific region of each frame of video segment, and calculates video features;
Step S4, after the video features of the video features of calculating and storage is compared, according to comparative result, determines whether to continue receiving video data.
The method is downloaded, uploads or the feature of displaying video by calculating, the video features of this video features and storage is compared, if download, upload or the feature of displaying video and the video features of storage match, forbid downloading, uploading or displaying video; Otherwise allow to download, upload or displaying video.By this network equipment, can when abuse not yet occurs, prevent infringement, thereby can effectively protect copyright owner's interests.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a network equipment with copyright protection function, it comprises:
Video data receiving element, receiving video data;
Video intercepting unit, a video segment of intercepting video data;
Video normalization unit, through normalized, makes the video data after processing reach specific resolution to the video segment of intercepting;
Frame interception unit, receives the video segment after normalization, and intercepts the specific region of each frame video, and described specific region is the border circular areas of the centre of every frame video;
Video features computing unit, the data of received frame interception unit intercepting, calculate video features; Video features computing unit carries out circular ring type by the border circular areas of frame interception unit intercepting and draws piece, each piece in annular region, and its brightness:
Wherein, Q (b, f)=[F (b+1, f)-F (b, f)]-α [F (b+1, f-1)-F (b, f-1)],
Wherein, f represents frame number, and b represents piece, and F (b, f) is the mean flow rate function of b piece in frame f, and α characterizes the significance level of the value in next frame;
Video features storehouse, store video feature, in this video features storehouse, the computing method of video features are identical with the method that video features computing unit calculates video features;
Video features comparing unit, the video features that video features computing unit is calculated and the video features of video features library storage
Compare, when the feature of this video is present in video features storehouse, controls video data receiving element and stop receiving
Video data; Otherwise continuation receiving video data.
2. the network equipment with copyright protection function according to claim 1, is characterized in that, the data that video data receiving element receives are the video data uploaded or the video data of download.
3. the network equipment with copyright protection function according to claim 1, is characterized in that, one section of video data after video intercepting unit intercepting head, as the video segment of intercepting.
4. the network equipment with copyright protection function according to claim 3, is characterized in that, the method for intercepting head is method or employing subtitle recognition methods that special characteristic is analyzed.
5. the network equipment with copyright protection function according to claim 1, is characterized in that, the video data after video normalization cell processing reaches 800*600 resolution.
6. the network equipment with copyright protection function according to claim 1; it is characterized in that; video features comparing unit adopts the search method of setting up index to retrieve; when the video features in the video features storehouse retrieving is less than 10% with the video features bit error rate (BER) being retrieved, think that the video features being retrieved is present in video features storehouse.
7. a copy-right protection method with the network equipment of copyright protection function, it comprises the steps: step S1, receiving video data;
Step S2, intercepting video segment, and be normalized;
Step S3, carries out the intercepting of video data to the border circular areas of the centre of each frame of video segment, and calculates video features; Video features computing unit carries out circular ring type by the border circular areas of frame interception unit intercepting and draws piece, each piece in annular region, and its brightness:
Wherein, Q (b, f)=[F (b+1, f)-F (b, f)]-α [F (b+1, f-1)-F (b, f-1)],
Wherein, f represents frame number, and b represents piece, and F (b, f) is the mean flow rate function of b piece in frame f;
Step S4, after the video features of the video features of calculating and storage is compared, according to comparative result, determines whether to continue receiving video data.
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| CN103475935A (en) * | 2013-09-06 | 2013-12-25 | 北京锐安科技有限公司 | Method and device for retrieving video segments |
| CN104793914B (en) * | 2015-03-26 | 2018-02-13 | 小米科技有限责任公司 | data display method and device |
| CN106970847A (en) * | 2017-03-28 | 2017-07-21 | 飞驰镁物（北京）信息服务有限公司 | Content cuts Tibetan method and system, user terminal and server |
| CN110149533A (en) * | 2019-06-24 | 2019-08-20 | 咪咕文化科技有限公司 | Automatic video frequency evidence-obtaining system and method about IPTV |
| CN110502872B (en) * | 2019-07-04 | 2022-01-18 | 天脉聚源(杭州)传媒科技有限公司 | Method, system, device and storage medium for processing product data based on analysis |
| CN111314736B (en) * | 2020-03-19 | 2022-03-04 | 北京奇艺世纪科技有限公司 | Video copyright analysis method and device, electronic equipment and storage medium |
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| CN101030293A (en) * | 2007-03-30 | 2007-09-05 | 西安电子科技大学 | Digital watermark method against geometrical attack based on image characteristic region |
| CN101179747A (en) * | 2007-12-12 | 2008-05-14 | 深圳市迅雷网络技术有限公司 | Multimedia video intercepting method and device |
| CN101277442A (en) * | 2008-04-01 | 2008-10-01 | 北京恒金恒泰信息技术有限公司 | System for protecting and monitoring image copyright |
| CN101308567A (en) * | 2008-06-21 | 2008-11-19 | 华中科技大学 | Robust image copy detection method base on content |
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| CN101030293A (en) * | 2007-03-30 | 2007-09-05 | 西安电子科技大学 | Digital watermark method against geometrical attack based on image characteristic region |
| CN101179747A (en) * | 2007-12-12 | 2008-05-14 | 深圳市迅雷网络技术有限公司 | Multimedia video intercepting method and device |
| CN101277442A (en) * | 2008-04-01 | 2008-10-01 | 北京恒金恒泰信息技术有限公司 | System for protecting and monitoring image copyright |
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