CN112383836A - Video verification system and method - Google Patents
Video verification system and method Download PDFInfo
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- CN112383836A CN112383836A CN202011121332.7A CN202011121332A CN112383836A CN 112383836 A CN112383836 A CN 112383836A CN 202011121332 A CN202011121332 A CN 202011121332A CN 112383836 A CN112383836 A CN 112383836A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8352—Generation of protective data, e.g. certificates involving content or source identification data, e.g. Unique Material Identifier [UMID]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/232—Content retrieval operation locally within server, e.g. reading video streams from disk arrays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
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Abstract
The invention belongs to the technical field of video anti-counterfeiting and discloses a video verification system and a video verification method. The system comprises: the video terminal obtains current video identification information of the video information, then searches the anti-counterfeiting node information in the front-end server according to the current video identification information, sends the anti-counterfeiting node information to the video terminal, and the video terminal finds the anti-counterfeiting information in the video according to the anti-counterfeiting node information and sends the current anti-counterfeiting information to the front-end server for verification. Through the mode, the anti-counterfeiting information is arranged in the anti-counterfeiting node, and the anti-counterfeiting node is a node arranged according to different video information, so that unpredictability is achieved, the difficulty of finding the anti-counterfeiting information by a thief is increased, and the safety is improved.
Description
Technical Field
The invention relates to the technical field of video anti-counterfeiting, in particular to a video verification system and a video verification method.
Background
With the rise of network technology, more and more network terminals can be added into the internet ecology, more and more program contents can be presented to users, and as the network is more open and faster, the problem that the protected program contents are played by pirates is required to be solved in the video anti-counterfeiting field is avoided. In the prior art, pirated videos in a network are monitored mainly by auditing contents by an auditing mechanism, time and labor are wasted, and the purpose of protecting original legal videos can be achieved by performing simple technical filtering on some pirated contents due to the improvement of a pirating technology, so that the problem of pirating is urgently solved by using a new technology.
In the prior art, a video source of a plurality of television programs can add watermarks in the video to perform anti-counterfeiting processing, and the watermarks are additional information which can be observed, and once a lawless person simulates or illegally obtains the watermarks, the anti-counterfeiting can be cracked, so that the problems of influence on image quality or poor anti-counterfeiting performance and the like exist.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a video verification system and a video verification method, and aims to solve the technical problem of poor watermark anti-counterfeiting performance in the prior art.
To achieve the above object, the present invention provides a video verification system, including: a front-end server and a video terminal;
the video terminal is used for acquiring current video identification information of the video information when the video information is received, and sending the current video identification information to the front-end server;
the front-end server is further used for receiving current video identification information sent by the video terminal, searching a preset relation mapping table according to the current video identification information to obtain target anti-counterfeiting node information corresponding to the current video identification information, and sending the target anti-counterfeiting node information to the video terminal;
the video terminal is also used for receiving target anti-counterfeiting node information sent by the front-end server, finding current anti-counterfeiting node information according to the target anti-counterfeiting node information, obtaining corresponding current anti-counterfeiting information according to the current anti-counterfeiting node information, and sending the current anti-counterfeiting information to the front-end server;
the front-end server is also used for receiving the current anti-counterfeiting information sent by the video terminal and carrying out anti-counterfeiting verification according to the current anti-counterfeiting information so as to obtain a video verification result.
Optionally, the system further includes: a front-end device;
the front-end equipment is used for acquiring video identification information and video data, distributing anti-counterfeiting node information according to the video data, setting anti-counterfeiting information according to the anti-counterfeiting node information, and sending the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information to a front-end server;
the front-end server is used for receiving the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information sent by the front-end equipment, and storing the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information into a mapping relation table according to a preset corresponding relation so as to obtain a preset relation mapping table.
Optionally, the front-end device is further configured to obtain video identification information and video data, allocate anti-counterfeiting node information according to the video data, insert watermark information into video image information corresponding to the anti-counterfeiting node information to generate watermark image information, use the watermark image information as anti-counterfeiting information, and send the video identification information, the anti-counterfeiting node information, and the watermark image information to a front-end server.
Optionally, the front-end device is further configured to obtain video duration information, generate a time node according to the video duration information and a preset algorithm, and distribute anti-counterfeit node information according to the time node.
Optionally, the video terminal is further configured to receive target anti-counterfeiting node information sent by the front-end server, find a target anti-counterfeiting node according to the target anti-counterfeiting node information, traverse the target anti-counterfeiting node, use the traversed target anti-counterfeiting node as a current anti-counterfeiting node, extract corresponding current anti-counterfeiting information from the current anti-counterfeiting node when the video is played to the current anti-counterfeiting node, and send the current anti-counterfeiting information to the front-end server.
Optionally, the front-end server is further configured to receive current video identification information sent by the video terminal, search a preset mapping table according to the current video identification information, to determine whether video identification information identical to the current video identification information can be found in the preset mapping table, obtain target anti-counterfeiting node information corresponding to the current video identification information if the video identification information identical to the current video identification information is found, and send the target anti-counterfeiting node information to the video terminal.
Further, to achieve the above object, the present invention further provides a video verification method, where the method is applied to a video verification system, and the video verification system includes: a front-end server and a video terminal;
the video verification method comprises the following steps:
when the video terminal receives video information, acquiring current video identification information of the video information, and sending the current video identification information to a front-end server;
the front-end server receives current video identification information sent by the video terminal, searches a preset relation mapping table according to the current video identification information to obtain target anti-counterfeiting node information corresponding to the current video identification information, and sends the target anti-counterfeiting node information to the video terminal;
the video terminal receives target anti-counterfeiting node information sent by the front-end server, finds current anti-counterfeiting node information according to the target anti-counterfeiting node information, obtains corresponding current anti-counterfeiting information according to the current anti-counterfeiting node information, and sends the current anti-counterfeiting information to the front-end server;
and the front-end server receives the current anti-counterfeiting information sent by the video terminal and performs anti-counterfeiting verification according to the current anti-counterfeiting information to obtain a video verification result.
The method comprises the following steps that the front-end server receives current video identification information sent by the video terminal, searches a preset relational mapping table according to the current video identification information to obtain target anti-counterfeiting node information corresponding to the current video identification information, and sends the target anti-counterfeiting node information to the video terminal, and the method further comprises the following steps:
the front-end equipment acquires video identification information and video data, distributes anti-counterfeiting node information according to the video data, sets anti-counterfeiting information according to the anti-counterfeiting node information, and sends the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information to a front-end server;
the front-end server receives the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information sent by the front-end equipment, and stores the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information into a mapping relation table according to a preset corresponding relation so as to obtain a preset relation mapping table.
Optionally, the front-end device acquires video identifier information and video data, allocates anti-counterfeiting node information according to the video data, sets anti-counterfeiting information according to the anti-counterfeiting node information, and sends the video identifier information, the anti-counterfeiting node information, and the anti-counterfeiting information to the front-end server, including:
optionally, the front-end device obtains video identification information and video data, allocates anti-counterfeiting node information according to the video data, inserts watermark information into video image information corresponding to the anti-counterfeiting node information to generate watermark image information, uses the watermark image information as anti-counterfeiting information, and sends the video identification information, the anti-counterfeiting node information and the watermark image information to a front-end server.
Optionally, the receiving, by the front-end server, current video identification information sent by the video terminal, searching a preset mapping table according to the current video identification information to obtain target anti-counterfeiting node information corresponding to the current video identification information, and sending the target anti-counterfeiting node information to the video terminal includes:
the front-end server receives the current video identification information sent by the video terminal, searches a preset relational mapping table according to the current video identification information to judge whether the video identification information with the same current video identification information can be found in the preset relational mapping table, and if the video identification information with the same current video identification information is found, obtains target anti-counterfeiting node information corresponding to the current video identification information and sends the target anti-counterfeiting node information to the video terminal.
The video terminal acquires the current video identification information of the video information, searches the anti-counterfeiting node information in the front-end server according to the current video identification information, and sends the anti-counterfeiting node information to the video terminal, the video terminal finds the anti-counterfeiting information in the video according to the anti-counterfeiting node information and sends the current anti-counterfeiting information to the front-end server for verification, and the anti-counterfeiting information is the anti-counterfeiting information arranged in the anti-counterfeiting node which is a node arranged according to different video information, so that the video terminal has unpredictability, the difficulty of finding the anti-counterfeiting information by a thief is increased, and the safety is improved.
Drawings
FIG. 1 is a block diagram of a first embodiment of a video verification system according to the present invention;
FIG. 2 is a block diagram of a second embodiment of a video verification system according to the present invention;
FIG. 3 is a flowchart illustrating a video verification method according to a first embodiment of the present invention;
FIG. 4 is a flowchart illustrating a video verification method according to a second embodiment of the present invention;
fig. 5 is a schematic diagram of a corresponding relationship of a second embodiment of the video verification system according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An embodiment of the present invention provides a video verification system, and referring to fig. 1, fig. 1 is a structural diagram of a first embodiment of a video verification system according to the present invention.
In this embodiment, the video verification system includes: the front-end server 10 and the video terminal 20, and the front-end server 10 and the video terminal 20 communicate via the internet to implement data transmission, and the data transmission protocol may adopt a File Transfer Protocol (FTP), or may adopt other transmission protocols, which is not limited in this embodiment. In an embodiment, the video terminal 20 may be an intelligent networking device such as a network set top box, a digital set top box, an intelligent television or an intelligent projector for controlling video playing or playing video. The front-end server 10 refers to a high-performance computer that provides (e.g., PC) shared resources including query, storage, and computation for clients in a network environment under the control of a network operating system, and its high performance is mainly embodied in terms of high-speed CPU computing capability, long-time reliable operation, and strong I/O external data throughput capability. The server comprises the following components: processor, hard disk, memory, system bus, etc., similar to a general-purpose computer architecture. In a network environment, a server mainly provides clients with: web applications, databases, files, printing, storage, and computing, among other services. In brief, a server is a computer that serves other clients in a network.
In this embodiment, when the video terminal 20 receives video information, it obtains current video identification information of the video information, where the video information is video data information received by the video terminal 20 after the user requests a video tag, and the video data information includes video identification information identifying a unique video identity, where the video identification information may be a unique video audit number or a video file identification serial number, and this embodiment is not limited herein. The video identification information is then sent to the front-end server 10, and since the video identification information may correspond to a lot of video-related information, the video identification information is optionally sent to the front-end server to facilitate retrieval of the video identification information as an index.
In this embodiment, the front-end server 10 receives video identification information sent by the video terminal 20, and searches a preset mapping table according to the video identification information, where the preset mapping table may be a mapping table pre-established by a service provider or data information obtained from a third party, and the preset mapping table stores video data or information related to the video data, such as a unique audit number, video source information, video anti-counterfeiting information, partial/complete image information, and the like. In the preset relationship preset table, the anti-counterfeiting node information corresponding to the video identification information may be based on the anti-counterfeiting node information corresponding to the video identification information, where the target anti-counterfeiting node information is pre-allocated position information including an anti-counterfeiting information position, and the position information may be time node information of a video image, information of a time node and a scanning line where a video vertical blanking period is located, or position information of a position where video supplemental enhancement information is located, which is not limited herein. And finding the corresponding target anti-counterfeiting node information in the mapping table, and sending the target anti-counterfeiting node information to the video terminal 20, wherein the video terminal 20 can find the anti-counterfeiting information according to the target anti-counterfeiting node information.
In this embodiment, after receiving the anti-counterfeit node information sent by the front-end server 10, the video terminal 20 finds the current anti-counterfeit node information according to the target anti-counterfeit node information, and obtains the corresponding current anti-counterfeit information according to the current anti-counterfeit node information, where the anti-counterfeit information may be a digital watermark inserted into a node corresponding to the anti-counterfeit node information, or image information formed by combining the digital watermark and an image at a node corresponding to the anti-counterfeit node information, or plaintext identification information, which is not limited in this embodiment.
It is to be understood that Digital watermarking (Digital Watermark) is a kind of protection information that is embedded in a carrier file using a computer algorithm. The digital watermarking technology is a computer information hiding technology based on a content and non-password mechanism. It is to embed some identification information (i.e. digital watermark) directly into the digital carrier (including multimedia, document, software, etc.) or indirectly (modifying the structure of a specific area), and it does not affect the use value of the original carrier, and is not easy to be ascertained and modified again. But can be identified and recognized by the producer. The information hidden in the carrier can achieve the purposes of confirming content creators and purchasers, transmitting secret information, judging whether the carrier is tampered or not and the like. Digital watermarking is an effective method for protecting information safety, realizing anti-counterfeiting tracing and copyright protection, and is an important branch and research direction in the field of information hiding technology research.
It can be understood that the image information formed by combining the digital watermark and the image at the node corresponding to the anti-counterfeiting node information is intercepted and transmitted to the front-end server 10 as the anti-counterfeiting information, and only the image information is intercepted without processing, so that the working resources of the video terminal can be saved, and in the transmission process, when the content is changed, the watermark information is correspondingly changed, so that whether the original data is tampered or not can be identified. The vulnerable watermark has stronger immunity to general image processing (such as filtering, noise adding, replacement, compression and the like). When the digital watermark inserted into the node corresponding to the anti-counterfeiting node information is used as the anti-counterfeiting information, the video terminal 20 extracts the digital watermark from the video node and sends the digital watermark to the front-end server 10 for verification. Compared with the transmission of a large amount of picture information, the transmission pressure of bandwidth is reduced, the flow required for transmitting anti-counterfeiting information is reduced under the condition of a certain network transmission speed, and the video information transmission capacity is improved.
In this embodiment, the front-end server 10 receives the anti-counterfeiting information sent by the video terminal 20, performs anti-counterfeiting verification according to the anti-counterfeiting information, and obtains a video verification result. In this embodiment, taking the two anti-counterfeiting information as examples, the digital watermark inserted into the node corresponding to the anti-counterfeiting node information, and the image information formed by combining the digital watermark and the image at the node corresponding to the anti-counterfeiting node information are different in that the process of extracting or detecting the digital watermark occurs in the video terminal 20 or the front-end server 10. After the anti-counterfeiting information is extracted, the anti-counterfeiting information is compared with corresponding anti-counterfeiting information stored in the front-end server 10 to obtain a comparison result, and a verification result can be obtained according to the comparison result, since links such as filtering, noise reduction, replacement, compression or transcoding may occur in the transmission process, a certain bit error rate may be caused, the verification is successful when the comparison results are completely consistent, or the verification is successful when the comparison consistent ratio is greater than a set threshold value, the setting can be performed according to specific conditions, and the embodiment is not limited herein.
It should be understood that the detection process differs according to the type of the digital watermark, and the digital watermark can be divided into a blind watermark and a non-blind watermark. The non-blind watermark requires original data or reserved information in the detection process, and the detection of the blind watermark does not require any original data and auxiliary information. In general, the non-blind watermark is more robust, but its application is limited by the need for the assistance of the original data. The blind watermark has strong practicability and wide application range. In the non-blind watermark, the newly appeared semi-blind watermark can be replaced by lower false detection rate and missed detection rate with a small amount of storage cost, and the performance of the watermark algorithm is improved. For blind watermark detection, the blind separation technology is developed rapidly, and there are many mature algorithms, such as maximum entropy M E algorithm based on information principle, independent component analysis theory (ICA), and the like. Many blind separation algorithms are sensitive to the probability distribution of the source signal and to noise, and the M E algorithm is effective for processing superscalar signals such as speech, but becomes unstable when processing image signals such that they have a probability density function of a complex shape. The detection algorithm is not limited in this embodiment, but is merely used to illustrate this embodiment.
In this embodiment, the video terminal 20 receives target anti-counterfeit node information sent by the front-end server 10, finds a target anti-counterfeit node according to the target anti-counterfeit node information, traverses the target anti-counterfeit node, uses the traversed target anti-counterfeit node as a current anti-counterfeit node, extracts corresponding current anti-counterfeit information from the current anti-counterfeit node when the video is played to the current anti-counterfeit node, and sends the current anti-counterfeit information to the front-end server.
It should be understood that, the process of extracting the anti-counterfeiting information may be to extract all watermark information for comparison at one time, or may be to perform distributed playing and comparing, the former has the advantage that the video can be viewed only when the information of all anti-counterfeiting nodes is all consistent at one time, which greatly increases the cost of the anti-counterfeiting information forged by the pirate, and improves the security of the video. And when the video is played, the node is compared, and the verification is not needed after the video is completely transmitted when the node is played, so that the waiting time for watching the video is saved, and the watching experience of a user is improved.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
In this embodiment, the video terminal 20 obtains the current video identification information of the video information, then searches the current video identification information for the anti-counterfeiting node information in the front-end server 10, and sends the anti-counterfeiting node information to the video terminal 20, the video terminal 20 finds the anti-counterfeiting information in the video according to the anti-counterfeiting node information, and sends the current anti-counterfeiting information to the front-end server 10 for verification, because the anti-counterfeiting information is a digital watermark arranged in the anti-counterfeiting node, and the anti-counterfeiting node is arranged according to a specific algorithm according to different video information, compared with a plain watermark, the video quality is not influenced, and the security is also improved.
Referring to fig. 2, fig. 2 is a block diagram of a second embodiment of a video verification system according to the present invention.
Based on the first embodiment, in this embodiment, the video verification system includes: a front-end server 10, a video terminal 20 and a front-end device 30. The front-end server 10 and the video terminal 20, and the front-end device 30 and the front-end server 10 communicate via the internet to implement data transmission, and the data transmission protocol may use an FTP protocol, or may use other transmission protocols, which is not limited in this embodiment. In an embodiment, the video terminal 20 may be an intelligent networking device such as a network set top box, a digital set top box, an intelligent television or an intelligent projector for controlling video playing or playing video. The front-end server 10 is a high-performance computer that provides (e.g., PC) shared resources including query, storage, computation, etc. for clients in a network environment under the control of a network operating system, and its high performance is mainly embodied in the aspects of high-speed CPU computing capability, long-time reliable operation, strong I/O external data throughput capability, etc. The server comprises the following components: processor, hard disk, memory, system bus, etc., similar to a general-purpose computer architecture. In a network environment, a server mainly provides clients with: web applications, databases, files, printing, storage, and computing, among other services. In brief, a server is a computer that serves other clients in a network. The front-end device 30 is generally a PC for data management, and may also be a front-end smart device such as a smart tv or a tablet PC.
In this embodiment, the front-end device 30 acquires video identifier information and video data, and distributes anti-counterfeit node information according to the video data, where the process of acquiring the video data and distributing the anti-counterfeit nodes occurs in the process of constructing the anti-counterfeit information, and performs anti-counterfeit information creation on a video that is newly entered into the video data management system and has anti-counterfeit protection requirements. It should be understood that whether the video needs to be anti-counterfeit can be judged through the video identification information, and the judgment can also be performed according to other external information, for example, the unique number is: 000AA1, the last 1 digit is 1, which requires anti-counterfeiting, and 0 has no anti-counterfeiting requirement, as shown in fig. 5.
It should be understood that the video data includes: video duration information, video data length information, video data structure information, video content information, additional enhancement supplemental information, field blanking period information and other information, and then an anti-counterfeiting node is set according to one or more items of the data according to a certain algorithm, wherein the anti-counterfeiting node can be a video time node, a field blanking period in a video, or Supplemental Enhancement Information (SEI) of the video, which is not limited in this embodiment. For example: and distributing according to the video time length information, and randomly generating 5 time nodes by inputting the time length information of the program and using a random function. Adds a video unique audit number to the video extra information and stores all of the above information in the front end server 10. Suppose our video a that his unique number is: 000AA1, and then 5 anti-counterfeiting watermark time points are generated by using a random function: 00:01:00, 00:10:05, 00:25:39, 00:45:20, 00:55:00 thus the following information can be recorded, as shown in fig. 5, the anti-counterfeiting information is further hidden by using the vertical blanking interval, and the number of scanning lines of the anti-counterfeiting information can be correspondingly stored on the time node, so as to obtain more accurate position information. Because the nodes are determined according to video data generation and a specific algorithm, the position of the anti-counterfeiting information is unpredictable, the cracking difficulty of a thief is increased, and the safety is improved.
It should be understood that SEI (supplemental enhancement information) in H264/H265 video compression standard makes use of the canonical property of video coding to insert supplemental enhancement information in certain specific data regions, which are themselves included in the video, so that some video supplemental information can be delivered quickly and efficiently, and in network tv applications, such information can be not only some video supplemental information but also some special control information. In the video compression standard, the vertical blanking interval information is inserted into some specific data area by using the standard characteristic of video coding, and the information is contained in the video, so that some video supplementary information can be quickly and efficiently transmitted. The anti-counterfeiting information is added in the video additional information supplementing means including the two SEI or the vertical blanking interval, so that the anti-counterfeiting information does not appear in a video picture, and the ornamental value of the video is improved. Because the anti-counterfeiting information is hidden in the extra information, a cracker can find the position of the anti-counterfeiting information more difficultly and can not be cracked more easily, and the safety of the video is improved.
It should be understood that the scanning concept means that the capturing and displaying of the television image is performed in such a way that the image is scanned by the electron beam. The retrace time during which the electron beam completes a line scan back to the beginning of another line is called the line retrace period or line blanking period. The retrace period during which the electron beam completes a frame scan back to the beginning of another frame is referred to as the frame retrace period or the frame blanking period. The broadcast television in China adopts a 625-line interlaced scanning mode. Interlaced scanning is scanning a frame of image twice (field). The first field sweeps out the gratings of odd lines 1, 3, 5, 7 …, etc., and the second field sweeps out the gratings of even lines 2, 4, 6, 8 …, etc. The field that sweeps the odd lines is usually called the odd field and the field that sweeps the even lines is called the even field. The retrace time between these two fields is called the vertical regression period or vertical blanking period. The blanking period is 25 lines in length, except the slot and tooth pulses of the field sync, the 7 th-32 th lines in the odd field blanking period and the 320 th-325 th lines in the even field blanking period can be inserted with other multi-mode signals.
It will be appreciated that the video identification information, anti-counterfeiting node information, and anti-counterfeiting information are sent to the front-end server 10 and stored in the server for use in the anti-counterfeiting verification process. The anti-counterfeit verification process is described in detail in the first embodiment, and is not described herein.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
In this embodiment, the front-end device 30 acquires the video identifier information and the video data, allocates the anti-counterfeiting node information according to the video data, sets the anti-counterfeiting information according to the anti-counterfeiting node information to complete the production of the video anti-counterfeiting information, and finally sends the video anti-counterfeiting information to the front-end server 10 for storage. The anti-counterfeiting information is distributed into the nodes according to the video data, so that the characteristics of difficult prediction are achieved, the anti-counterfeiting information is hidden in the set anti-counterfeiting nodes, the difficulty of detecting the anti-counterfeiting information is increased, and the anti-counterfeiting capability of the video is improved.
Referring to fig. 3, fig. 3 is a schematic flowchart of a video verification method according to a first embodiment of the present invention, where the video verification method is applied to a video verification system, and the video verification system includes: a front-end server and a video terminal.
In this embodiment, the video verification system includes: the front-end server communicates with the video terminal through the internet to realize data transmission, and the data transmission protocol may adopt an FTP protocol or other transmission protocols, which is not limited in this embodiment. In the embodiment, the video terminal may be an intelligent networking device such as a network set top box, a digital set top box, an intelligent television or an intelligent projector for controlling video playing or playing video. The front-end server is a high-performance computer which provides (such as a PC) shared resources including query, storage, calculation and the like for a client in a network environment under the control of a network operating system, and the high performance of the front-end server is mainly reflected in the aspects of high-speed CPU computing capability, long-time reliable operation, strong I/O external data throughput capability and the like. The server comprises the following components: processor, hard disk, memory, system bus, etc., similar to a general purpose computer architecture. In a network environment, a server mainly provides clients with: web applications, databases, files, printing, storage, computing, etc. In brief, a server is a computer that serves other clients in a network.
The video verification method comprises the following steps:
and step S10, when the video terminal receives the video information, acquiring the current video identification information of the video information, and sending the current video identification information to a front-end server.
In this embodiment, when the video terminal 20 receives video information, it obtains current video identification information of the video information, where the video information is video data information received by the video terminal 20 after the user requests a video tag, and the video data information includes video identification information identifying a unique video identity, where the video identification information may be a unique video audit number or a video file identification serial number, and this embodiment is not limited herein. The video identification information is then sent to the front-end server 10, and since the video identification information may correspond to a lot of video-related information, the video identification information is optionally sent to the front-end server to facilitate retrieval of the video identification information as an index.
And step S20, the front-end server receives the current video identification information sent by the video terminal, searches a preset relation mapping table according to the current video identification information to obtain target anti-counterfeiting node information corresponding to the current video identification information, and sends the target anti-counterfeiting node information to the video terminal.
In this embodiment, the front-end server receives video identification information sent by the video terminal, and searches a preset mapping table according to the video identification information, where the preset mapping table may be a mapping table pre-established by a service provider or data information obtained from a third party, and the preset mapping table stores video data or information related to the video data, such as a unique audit number, video source information, video anti-counterfeiting information, partial/complete image information, and the like. In the preset relationship preset table, the anti-counterfeiting node information corresponding to the video identification information may be based on the anti-counterfeiting node information corresponding to the video identification information, where the target anti-counterfeiting node information is pre-allocated position information including an anti-counterfeiting information position, and the position information may be time node information of a video image, information of a time node and a scanning line where a video vertical blanking period is located, or position information of a position where video supplemental enhancement information is located, which is not limited herein. And finding corresponding target anti-counterfeiting node information in the mapping table, and sending the target anti-counterfeiting node information to the video terminal, wherein the video terminal can find the anti-counterfeiting information according to the target anti-counterfeiting node information.
And step S30, the video terminal receives the target anti-counterfeiting node information sent by the front-end server, finds the current anti-counterfeiting node information according to the target anti-counterfeiting node information, obtains the corresponding current anti-counterfeiting information according to the current anti-counterfeiting node information, and sends the current anti-counterfeiting information to the front-end server.
It should be understood that, when the video terminal receives the anti-counterfeit node information sent by the front-end server, finds the current anti-counterfeit node information according to the target anti-counterfeit node information, and obtains the corresponding current anti-counterfeit information according to the current anti-counterfeit node information, the anti-counterfeit information may be a digital watermark inserted into a node corresponding to the anti-counterfeit node information, or image information formed by combining the digital watermark and an image at a node corresponding to the anti-counterfeit node information, or plaintext identification information, which is not limited in this embodiment.
It is to be understood that Digital watermarking (Digital Watermark) is a kind of protection information that is embedded in a carrier file using a computer algorithm. The digital watermarking technology is a computer information hiding technology based on a content and non-password mechanism. It is to embed some identification information (i.e. digital watermark) directly into the digital carrier (including multimedia, document, software, etc.) or indirectly (modifying the structure of a specific area), and it does not affect the use value of the original carrier, and is not easy to be ascertained and modified again. But can be identified and recognized by the producer. The information hidden in the carrier can achieve the purposes of confirming content creators and purchasers, transmitting secret information, judging whether the carrier is tampered or not and the like. Digital watermarking is an effective method for protecting information safety, realizing anti-counterfeiting tracing and copyright protection, and is an important branch and research direction in the field of information hiding technology research.
It can be understood that the image information formed by combining the digital watermark and the node image corresponding to the anti-counterfeiting node information is intercepted and transmitted to the front-end server as the anti-counterfeiting information, and only the image information is intercepted without processing, so that the working resources of the video terminal can be saved, and in the transmission process, when the content is changed, the watermark information is correspondingly changed, so that whether the original data is falsified or not can be identified. The vulnerable watermark has stronger immunity to general image processing (such as filtering, noise adding, replacement, compression and the like). And when the digital watermark inserted into the node corresponding to the anti-counterfeiting node information is used as the anti-counterfeiting information, the video terminal extracts the digital watermark from the video node and sends the digital watermark to the front-end server for verification. Compared with the transmission of a large amount of picture information, the transmission pressure of bandwidth is reduced, the flow required for transmitting anti-counterfeiting information is reduced under the condition of a certain network transmission speed, and the video information transmission capacity is improved.
And step S40, the front-end server receives the current anti-counterfeiting information sent by the video terminal and performs anti-counterfeiting verification according to the current anti-counterfeiting information to obtain a video verification result.
In this embodiment, the front-end server receives the anti-counterfeiting information sent by the video terminal, performs anti-counterfeiting verification according to the anti-counterfeiting information, and obtains a video verification result. In this embodiment, taking the two anti-counterfeiting information as examples, the digital watermark inserted into the node corresponding to the anti-counterfeiting node information and the image information formed by combining the digital watermark and the image at the node corresponding to the anti-counterfeiting node information are different in that the process of extracting or detecting the digital watermark occurs in the video terminal or the front-end server. After the anti-counterfeiting information is extracted, the anti-counterfeiting information is compared with corresponding anti-counterfeiting information stored in a front-end server to obtain a comparison result, a verification result can be obtained according to the comparison result, and links such as filtering, noise reduction, replacement, compression or transcoding may occur in the transmission process, so that a certain bit error rate may be caused, the verification is successful when the comparison result is completely consistent, or the verification is successful when the comparison consistent ratio is greater than a set threshold value, the setting can be performed according to specific conditions, and the embodiment is not limited herein.
It should be understood that the detection process differs according to the type of the digital watermark, and the digital watermark can be divided into a blind watermark and a non-blind watermark. The non-blind watermark requires original data or reserved information in the detection process, and the detection of the blind watermark does not require any original data and auxiliary information. In general, the non-blind watermark is more robust, but its application is limited by the need for the assistance of the original data. The blind watermark has strong practicability and wide application range. In the non-blind watermark, the newly appeared semi-blind watermark can be replaced by lower false detection rate and missed detection rate with a small amount of storage cost, and the performance of the watermark algorithm is improved. For blind watermark detection, the blind separation technology is developed rapidly, and there are many mature algorithms, such as maximum entropy M E algorithm based on information principle, independent component analysis theory (ICA), and the like. Many blind separation algorithms are sensitive to the probability distribution of the source signal and to noise, and the M E algorithm is effective for processing superscalar signals such as speech, but becomes unstable when processing image signals such that they have a probability density function of a complex shape. The detection algorithm is not limited in this embodiment, but is merely used to illustrate this embodiment.
In this embodiment, the video terminal receives target anti-counterfeiting node information sent by the front-end server, finds a target anti-counterfeiting node according to the target anti-counterfeiting node information, traverses the target anti-counterfeiting node, takes the traversed target anti-counterfeiting node as a current anti-counterfeiting node, extracts corresponding current anti-counterfeiting information from the current anti-counterfeiting node when the video is played to the current anti-counterfeiting node, and sends the current anti-counterfeiting information to the front-end server.
It should be understood that, the process of extracting the anti-counterfeiting information may be to extract all watermark information for comparison at one time, or may be to perform distributed playing and comparing, the former has the advantage that the video can be viewed only when the information of all anti-counterfeiting nodes is all consistent at one time, which greatly increases the cost of the anti-counterfeiting information forged by the pirate, and improves the security of the video. And when the video is played, the node is compared, and the verification is not needed after the video is completely transmitted when the node is played, so that the waiting time for watching the video is saved, and the watching experience of a user is improved.
In the embodiment, the current video identification information of the video information is acquired through the video terminal, the anti-counterfeiting node information is searched in the front-end server according to the current video identification information, and the anti-counterfeiting node information is sent to the video terminal, the video terminal finds the anti-counterfeiting information in the video according to the anti-counterfeiting node information, and sends the current anti-counterfeiting information to the front-end server for verification.
Referring to fig. 4, fig. 4 is a schematic flowchart of a second embodiment of the video verification method according to the present invention, based on the first embodiment of the video verification method, the video verification method is applied to a video verification system, and the video verification system includes: the system comprises front-end equipment, a front-end server and a video terminal;
in this embodiment, the front-end server and the video terminal, and the front-end device and the front-end server communicate via the internet to implement data transmission, and the data transmission protocol may use an FTP protocol, or may use other transmission protocols, which is not limited in this embodiment. In the embodiment, the video terminal may be an intelligent networking device such as a network set top box, a digital set top box, an intelligent television or an intelligent projector for controlling video playing or playing video. The front-end server is a high-performance computer which provides (such as a PC) shared resources including query, storage, calculation and the like for a client in a network environment under the control of a network operating system, and the high performance of the front-end server is mainly reflected in the aspects of high-speed CPU computing capability, long-time reliable operation, strong I/O external data throughput capability and the like. The server comprises the following components: processor, hard disk, memory, system bus, etc., similar to a general purpose computer architecture. In a network environment, a server mainly provides clients with: web applications, databases, files, printing, storage, computing, etc. In brief, a server is a computer that serves other clients in a network. The front-end device is generally used for a data management PC, and can also be a front-end intelligent device such as an intelligent television or a tablet computer.
In this embodiment of the video verification method, before the step S10 in the first embodiment of the video verification method, the method further includes:
and step S01, the front-end equipment acquires video identification information and video data, distributes anti-counterfeiting node information according to the video data, sets anti-counterfeiting information according to the anti-counterfeiting node information, and sends the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information to a front-end server.
In this embodiment, the front-end device acquires video identification information and video data, and distributes anti-counterfeiting node information according to the video data, where the processes of acquiring the video data and distributing the anti-counterfeiting nodes occur in the process of constructing the anti-counterfeiting information, and performs anti-counterfeiting information production on a video which is newly entered into the video data management system and has anti-counterfeiting protection requirements. It should be understood that whether the video needs to be anti-counterfeit can be judged through the video identification information, and the judgment can also be performed according to other external information, for example, the unique number is: 000AA1, the last 1 digit is 1, which requires anti-counterfeiting, and 0 has no anti-counterfeiting requirement, as shown in fig. 5.
It should be understood that the video data includes: video duration information, video data length information, video data structure information, video content information, additional enhancement supplemental information, field blanking period information and other information, and then an anti-counterfeiting node is set according to one or more items of the data according to a certain algorithm, wherein the anti-counterfeiting node can be a video time node, a field blanking period in a video, or Supplemental Enhancement Information (SEI) of the video, which is not limited in this embodiment. For example: and distributing according to the video time length information, and randomly generating 5 time nodes by inputting the time length information of the program and using a random function. And adding the video unique audit number into the video additional information and storing all the information in the front-end server. Suppose our video a that his unique number is: 000AA1, and then 5 anti-counterfeiting watermark time points are generated by using a random function: 00:01:00, 00:10:05, 00:25:39, 00:45:20, 00:55:00 thus the following information can be recorded, as shown in fig. 5, the anti-counterfeiting information is further hidden by using the vertical blanking interval, and the number of scanning lines of the anti-counterfeiting information can be correspondingly stored on the time node, so as to obtain more accurate position information.
It should be understood that SEI (supplemental enhancement information) in H264/H265 video compression standard makes use of the canonical property of video coding to insert supplemental enhancement information in certain specific data regions, which are themselves included in the video, so that some video supplemental information can be delivered quickly and efficiently, and in network tv applications, such information can be not only some video supplemental information but also some special control information. In the video compression standard, the vertical blanking interval information is inserted into some specific data area by using the standard characteristic of video coding, and the information is contained in the video, so that some video supplementary information can be quickly and efficiently transmitted. The anti-counterfeiting information is added in the video additional information supplementing means including the two SEI or the vertical blanking interval, so that the anti-counterfeiting information does not appear in a video picture, and the ornamental value of the video is improved. Because the anti-counterfeiting information is hidden in the extra information, a cracker can find the position of the anti-counterfeiting information more difficultly and can not be cracked more easily, and the safety of the video is improved.
It should be understood that the scanning concept means that the capturing and displaying of the television image is performed in such a way that the image is scanned by the electron beam. The retrace time during which the electron beam completes a line scan back to the beginning of another line is called the line retrace period or line blanking period. The retrace period during which the electron beam completes a frame scan back to the beginning of another frame is referred to as the frame retrace period or the frame blanking period. The broadcast television in China adopts a 625-line interlaced scanning mode. Interlaced scanning is scanning a frame of image twice (field). The first field sweeps out the gratings of odd lines 1, 3, 5, 7 …, etc., and the second field sweeps out the gratings of even lines 2, 4, 6, 8 …, etc. The field that sweeps the odd lines is usually called the odd field and the field that sweeps the even lines is called the even field. The retrace time between these two fields is called the vertical regression period or vertical blanking period. The blanking period is 25 lines in length, except the slot and tooth pulses of the field sync, the 7 th-32 th lines in the odd field blanking period and the 320 th-325 th lines in the even field blanking period can be inserted with other multi-mode signals.
And step S02, the front-end server receives the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information sent by the front-end equipment, and stores the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information into a mapping relation table according to a preset corresponding relation so as to obtain a preset relation mapping table.
It can be understood that the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information are sent to the front-end server and stored in the server for the anti-counterfeiting verification process. The preset mapping table may be a mapping table established in advance by a service provider, or may be data information obtained from a third party, where the mapping table stores video data or information related to the video data, such as a unique audit number, video source information, video anti-counterfeiting information, partial/complete image information, and the like. In the preset relationship preset table, the anti-counterfeiting node information corresponding to the video identification information may be based on the anti-counterfeiting node information corresponding to the video identification information, where the target anti-counterfeiting node information is pre-allocated position information including an anti-counterfeiting information position, and the position information may be time node information of a video image, information of a time node and a scanning line where a video vertical blanking period is located, or position information of a position where video supplemental enhancement information is located, which is not limited herein.
In the embodiment, the video identification information and the video data are acquired through the front-end equipment, the anti-counterfeiting node information is distributed according to the video data, and then the anti-counterfeiting information is set according to the anti-counterfeiting node information so as to complete the production of the video anti-counterfeiting information. The anti-counterfeiting information is distributed into the nodes according to the video data, so that the characteristics of difficult prediction are achieved, the anti-counterfeiting information is hidden in the set anti-counterfeiting nodes, the difficulty of detecting the anti-counterfeiting information is increased, and the anti-counterfeiting capability of the video is improved.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A video verification system, the system comprising: a front-end server and a video terminal;
the video terminal is used for acquiring current video identification information of the video information when the video information is received, and sending the current video identification information to the front-end server;
the front-end server is used for receiving the current video identification information sent by the video terminal, searching a preset relation mapping table according to the current video identification information to obtain target anti-counterfeiting node information corresponding to the current video identification information, and sending the target anti-counterfeiting node information to the video terminal;
the video terminal is also used for receiving target anti-counterfeiting node information sent by the front-end server, finding current anti-counterfeiting node information according to the target anti-counterfeiting node information, obtaining corresponding current anti-counterfeiting information according to the current anti-counterfeiting node information, and sending the current anti-counterfeiting information to the front-end server;
the front-end server is also used for receiving the current anti-counterfeiting information sent by the video terminal and carrying out anti-counterfeiting verification according to the current anti-counterfeiting information so as to obtain a video verification result.
2. The system of claim 1, wherein the system further comprises: a front-end device;
the front-end equipment is used for acquiring video identification information and video data, distributing anti-counterfeiting node information according to the video data, setting anti-counterfeiting information according to the anti-counterfeiting node information, and sending the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information to a front-end server;
the front-end server is further configured to receive the video identifier information, the anti-counterfeiting node information and the anti-counterfeiting information sent by the front-end device, and store the video identifier information, the anti-counterfeiting node information and the anti-counterfeiting information into a mapping relation table according to a preset corresponding relation, so as to obtain a preset relation mapping table.
3. The system of claim 2, wherein the front-end device is further configured to obtain video identifier information and video data, allocate anti-counterfeit node information according to the video data, insert watermark information into video image information corresponding to the anti-counterfeit node information to generate watermark image information, use the watermark image information as anti-counterfeit information, and send the video identifier information, the anti-counterfeit node information, and the watermark image information to a front-end server.
4. The system of claim 2, wherein the front-end device is further configured to obtain video duration information, generate a time node according to the video duration information and a preset algorithm, and distribute anti-counterfeit node information according to the time node.
5. The system according to any one of claims 1 to 4, wherein the video terminal is further configured to receive target anti-counterfeit node information sent by the front-end server, find a target anti-counterfeit node according to the target anti-counterfeit node information, traverse the target anti-counterfeit node, use the traversed target anti-counterfeit node as a current anti-counterfeit node, extract corresponding current anti-counterfeit information from the current anti-counterfeit node when the video is played to the current anti-counterfeit node, and send the current anti-counterfeit information to the front-end server.
6. The system according to any one of claims 1 to 4, wherein the front-end server is further configured to receive current video identification information sent by the video terminal, search a preset mapping table according to the current video identification information to determine whether video identification information with the same current video identification information can be found in the preset mapping table, obtain target anti-counterfeit node information corresponding to the current video identification information if video identification information with the same current video identification information is found, and send the target anti-counterfeit node information to the video terminal.
7. A video verification method applied to the video verification system according to any one of claims 1 to 6, the video verification system comprising: a front-end server and a video terminal;
the video verification method comprises the following steps:
when the video terminal receives video information, acquiring current video identification information of the video information, and sending the current video identification information to a front-end server;
the front-end server receives current video identification information sent by the video terminal, searches a preset relation mapping table according to the current video identification information to obtain target anti-counterfeiting node information corresponding to the current video identification information, and sends the target anti-counterfeiting node information to the video terminal;
the video terminal receives target anti-counterfeiting node information sent by the front-end server, finds current anti-counterfeiting node information according to the target anti-counterfeiting node information, obtains corresponding current anti-counterfeiting information according to the current anti-counterfeiting node information, and sends the current anti-counterfeiting information to the front-end server;
and the front-end server receives the current anti-counterfeiting information sent by the video terminal and performs anti-counterfeiting verification according to the current anti-counterfeiting information to obtain a video verification result.
8. The method of claim 7, wherein the system further comprises: a front-end device;
the method comprises the following steps that the front-end server receives current video identification information sent by the video terminal, searches a preset relational mapping table according to the current video identification information to obtain target anti-counterfeiting node information corresponding to the current video identification information, and sends the target anti-counterfeiting node information to the video terminal, and the method further comprises the following steps:
the front-end equipment acquires video identification information and video data, distributes anti-counterfeiting node information according to the video data, sets anti-counterfeiting information according to the anti-counterfeiting node information, and sends the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information to a front-end server;
the front-end server receives the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information sent by the front-end equipment, and stores the video identification information, the anti-counterfeiting node information and the anti-counterfeiting information into a mapping relation table according to a preset corresponding relation so as to obtain a preset relation mapping table.
9. The method of claim 8, wherein the front-end device obtaining video identification information and video data, distributing anti-counterfeiting node information according to the video data, setting anti-counterfeiting information according to the anti-counterfeiting node information, and sending the video identification information, the anti-counterfeiting node information, and the anti-counterfeiting information to a front-end server, comprises:
the front-end equipment acquires video identification information and video data, distributes anti-counterfeiting node information according to the video data, inserts watermark information into video image information corresponding to the anti-counterfeiting node information to generate watermark image information, takes the watermark image information as the anti-counterfeiting information, and sends the video identification information, the anti-counterfeiting node information and the watermark image information to a front-end server.
10. The method according to any one of claims 7 to 9, wherein the front-end server receives current video identification information sent by the video terminal, searches a preset mapping table according to the current video identification information to obtain target anti-counterfeiting node information corresponding to the current video identification information, and sends the target anti-counterfeiting node information to the video terminal, including:
the front-end server receives the current video identification information sent by the video terminal, searches a preset relational mapping table according to the current video identification information to judge whether the video identification information with the same current video identification information can be found in the preset relational mapping table, and if the video identification information with the same current video identification information is found, obtains target anti-counterfeiting node information corresponding to the current video identification information and sends the target anti-counterfeiting node information to the video terminal.
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