CN107580196B - Video data sharing system and method - Google Patents
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Abstract
The invention relates to a video data sharing system, comprising: the system comprises a video acquisition terminal, a video metadata module, a user module, a video sharing module, a video verification module and a user authentication module; the video acquisition terminal is responsible for acquiring video data, encoding the acquired video data to obtain encoded video data, generating a hash code at regular time according to the encoded video data, submitting the hash code to a block chain system to exchange a video voucher code, storing the video voucher code into the video data as a video information enhancement frame, enabling the video data to have anti-tampering capability, and submitting video metadata to a video metadata module at regular time; the video metadata module is responsible for storing and retrieving video metadata; the user module is responsible for applying for video data and submitting the video data; the video sharing module is responsible for coordinating video data; the video verification module is responsible for verifying whether video data submitted by a user is tampered or forged; the user authentication module is responsible for user identity authentication.
Description
Technical Field
The invention relates to the technical field of videos, in particular to a video data sharing system and a video data sharing method.
Background
With the rapid development of computers, networks, image processing and transmission technologies, the popularization of video monitoring is more and more obvious, but the current video monitoring still has some problems, which are mainly reflected in the following two aspects, on one hand: with the fierce development of safe city construction with security monitoring as a technical means, people can deeply realize the important role of video data in maintaining social security, reducing crime rate and improving the overall happiness of the city, but due to the government financial limitation, the monitoring system cannot cover all places, so that the video monitoring system has a plurality of monitoring blind spots. On the other hand: with the popularization of mobile terminals such as mobile phones and tablet computers, more and more people are used to shoot and share videos by using intelligent terminals, but with the appearance of video editing software, video data can be easily tampered and forged, so that the video data collected by individuals cannot be used in the aspect of urban management, and the personal video data is not fully utilized.
In the prior art, a chinese patent CN 205017454U discloses a video security device, but the patent stores video data through a background, has high system operation cost, is used without large scale, only has video data tampering identification capability, cannot identify counterfeit videos, and does not provide a video data sharing platform;
chinese patent CN 204733294U discloses a surveillance video recording device for preventing clipping, but the patent requires foreign object assistance, which is not favorable for popularization;
therefore, in view of these drawbacks, the present invention provides a video data sharing system and method, and the main problems solved by the present invention are: 1. the prior art lacks the authentication capability of tampered or forged video data and cannot ensure the authenticity of the video, and 2, the prior art lacks a video data sharing platform.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a video data sharing system and a video data sharing method; two problems that hinder video data sharing are solved: 1. the prior art lacks the authentication capability of tampering or forging video data, and cannot ensure the video authenticity, and 2, the prior art lacks a video data sharing platform.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a video data sharing system, comprising: the system comprises a video acquisition terminal, a video metadata module, a user module, a video sharing module, a video verification module and a user authentication module;
the video acquisition terminal is responsible for acquiring video data, encoding the acquired video data to obtain encoded video data, generating a hash code at regular time according to the encoded video data, submitting the hash code to a block chain system to exchange a video voucher code, storing the video voucher code into the video data as a video information enhancement frame, enabling the video data to have anti-tampering capability, and submitting video metadata to a video metadata module at regular time;
the video metadata module is responsible for storing and retrieving video metadata;
the user module is responsible for applying for video data and submitting the video data;
the video sharing module is responsible for coordinating video data;
the video verification module is responsible for verifying whether video data submitted by a user is tampered or forged;
the user authentication module is responsible for user identity authentication.
On the basis of the above scheme, the metadata includes: video acquisition terminal coding, geographic coordinates, video owner coding, and video acquisition time.
On the basis of the scheme, the video data acquisition process of the video acquisition terminal is as follows:
step 1, accessing a user authentication module, acquiring a user code and a video metadata module access certificate, and submitting video metadata to a video metadata module at regular time according to the acquired video metadata module access certificate;
step 2, after obtaining the user code, starting to collect video data, and coding the collected video data to obtain coded video data;
step 3, buffering the coded video data in a queue to be signed;
step 4, when the queue to be signed meets the specified requirements (such as the number of frames of the key frame, the time interval of the key frame exceeds the number of seconds and the like), calculating the coded video data in the queue to be signed by using a hash algorithm (sha1, md5 and the like) to obtain a hash code;
step 5, submitting the hash code to a blockchain system to obtain a video voucher code (transaction code);
step 6, storing the coded video data in the queue to be signed and the information enhancement frame containing the video certificate code into a video file;
and 7, repeating the steps 2-6 until the user stops collecting the video.
On the basis of the scheme, the video data application flow is as follows:
step 1, a user performs identity authentication, and submits a video data application to a video sharing module through a user module after the authentication is passed;
step 2, the video sharing module submits a video data application to the video metadata module, and the video metadata module sends a video data application request to a user providing video metadata after receiving the video data application;
step 3, after receiving the video data application request, the user providing the video metadata submits the video data to the video sharing module;
step 4, after the video sharing module receives the video data, calling a video verification module to verify the video data;
step 5, after the video data passes the verification, the video data is marked as a video to be downloaded, and the video to be downloaded is submitted to the user module by the video verification module;
and 6, downloading the video data by the user through the user module.
On the basis of the above scheme, the video data application comprises: address coordinates and time period information.
On the basis of the above scheme, the process of the video verification module for verifying whether the video data is tampered with is as follows:
step a, scanning video data, finding an information enhancement frame containing a video voucher code, and dividing the video data by using the information enhancement frame to obtain a check block consisting of a video data block and the information enhancement frame;
b, calculating the video data block by using a hash algorithm to obtain a hash code I;
step c, acquiring a hash code II from the block chain system by using a video voucher code in a check block consisting of the information enhancement frame;
and d, judging whether the hash code I is the same as the hash code II, if so, indicating that the video data is not tampered, otherwise, tampering the video data.
On the basis of the above scheme, the flow of the video verification module for verifying whether the video data is forged is as follows:
step a, decoding video data to obtain continuous video pictures;
b, dividing the video picture into a moving target part (which can be a plurality of parts) and a background part by using a moving target detection algorithm;
step c, using a picture similarity detection algorithm to compare whether the color, shape, luminance direction view and sift features in the background parts of two adjacent video pictures are similar, if the similarity of the color, shape, luminance direction view and sift features in the background parts of the adjacent video pictures does not meet the requirement, recording the position where the similarity in the background parts of the video pictures does not meet the requirement as a mutation position, and simultaneously recording the mutation times of the mutation position;
d, if the mutation times of the background part of the video picture exceed the specified times, marking the video data as suspected forgery, and if the mutation times of the background part of the video picture do not exceed the specified times, performing the next step;
and e, dividing the video data with the similar moving targets into a group by using a picture similarity detection algorithm, wherein the video data in the video group represents the video credibility of the video group, and the more the video data in the video group is, the higher the credibility of the video data is.
Drawings
The invention has the following drawings:
fig. 1 is a flow chart of video data acquisition.
Fig. 2 is a flow chart of a video data application.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-2, the video data sharing system according to the present invention includes: the system comprises a video acquisition terminal, a video metadata module, a user module, a video sharing module, a video verification module and a user authentication module;
the video acquisition terminal is responsible for acquiring video data, encoding the acquired video data to obtain encoded video data, generating a hash code at regular time according to the encoded video data, submitting the hash code to a block chain system to exchange a video voucher code, storing the video voucher code into the video data as a video information enhancement frame, enabling the video data to have anti-tampering capability, and submitting video metadata to a video metadata module at regular time;
the video metadata module is responsible for storing and retrieving video metadata;
the user module is responsible for applying for video data and submitting the video data;
the video sharing module is responsible for coordinating video data;
the video verification module is responsible for verifying whether video data submitted by a user is tampered or forged;
the user authentication module is responsible for user identity authentication.
On the basis of the above scheme, the metadata includes: video acquisition terminal coding, geographic coordinates, video owner coding, and video acquisition time.
On the basis of the scheme, the video data acquisition process of the video acquisition terminal is as follows:
step 1, accessing a user authentication module, acquiring a user code and a video metadata module access certificate, and submitting video metadata to a video metadata module at regular time according to the acquired video metadata module access certificate;
step 2, after obtaining the user code, starting to collect video data, and coding the collected video data to obtain coded video data;
step 3, buffering the coded video data in a queue to be signed;
step 4, when the queue to be signed meets the specified requirements (such as the number of frames of the key frame, the time interval of the key frame exceeds the number of seconds and the like), calculating the coded video data in the queue to be signed by using a hash algorithm (sha1, md5 and the like) to obtain a hash code;
step 5, submitting the hash code to a blockchain system to obtain a video voucher code (transaction code);
step 6, storing the coded video data in the queue to be signed and the information enhancement frame containing the video certificate code into a video file;
and 7, repeating the steps 2-6 until the user stops collecting the video.
On the basis of the scheme, the video data application flow is as follows:
step 1, a user performs identity authentication, and submits a video data application to a video sharing module through a user module after the authentication is passed;
step 2, the video sharing module submits a video data application to the video metadata module, and the video metadata module sends a video data application request to a user providing video metadata after receiving the video data application;
step 3, after receiving the video data application request, the user providing the video metadata submits the video data to the video sharing module;
step 4, after the video sharing module receives the video data, calling a video verification module to verify the video data;
step 5, after the video data passes the verification, the video data is marked as a video to be downloaded, and the video to be downloaded is submitted to the user module by the video verification module;
and 6, downloading the video data by the user through the user module.
On the basis of the above scheme, the video data application comprises: address coordinates and time period information.
On the basis of the above scheme, the process of the video verification module for verifying whether the video data is tampered with is as follows:
step a, scanning video data, finding an information enhancement frame containing a video voucher code, and dividing the video data by using the information enhancement frame to obtain a check block consisting of a video data block and the information enhancement frame;
b, calculating the video data block by using a hash algorithm to obtain a hash code I;
step c, acquiring a hash code II from the block chain system by using a video voucher code in a check block consisting of the information enhancement frame;
and d, judging whether the hash code I is the same as the hash code II, if so, indicating that the video data is not tampered, otherwise, tampering the video data.
On the basis of the above scheme, the flow of the video verification module for verifying whether the video data is forged is as follows:
step a, decoding video data to obtain continuous video pictures;
b, dividing the video picture into a moving target part (which can be a plurality of parts) and a background part by using a moving target detection algorithm;
step c, using a picture similarity detection algorithm to compare whether the color, shape, luminance direction view and sift features in the background parts of two adjacent video pictures are similar, if the similarity of the color, shape, luminance direction view and sift features in the background parts of the adjacent video pictures does not meet the requirement, recording the position where the similarity in the background parts of the video pictures does not meet the requirement as a mutation position, and simultaneously recording the mutation times of the mutation position;
d, if the mutation times of the background part of the video picture exceed the specified times, marking the video data as suspected forgery, and if the mutation times of the background part of the video picture do not exceed the specified times, performing the next step;
and e, dividing the video data with the similar moving targets into a group by using a picture similarity detection algorithm, wherein the video data in the video group represents the video credibility of the video group, and the more the video data in the video group is, the higher the credibility of the video data is.
The invention has the beneficial effects that:
the invention aims to provide a video data sharing system and a video data sharing method, which can improve the utilization rate of video data and solve the problem of high video data acquisition and sharing cost.
The key points and points to be protected of the invention are as follows:
the method comprises a video data acquisition process, a video data application process and a process of verifying whether video data are forged or not.
Those not described in detail in this specification are within the skill of the art.
Claims (7)
1. A video data sharing system, comprising: the system comprises a video acquisition terminal, a video metadata module, a user module, a video sharing module, a video verification module and a user authentication module;
the video acquisition terminal is responsible for acquiring video data, encoding the acquired video data to obtain encoded video data, generating a hash code at regular time according to the encoded video data, submitting the hash code to a block chain system to exchange a video voucher code, storing the video voucher code into the video data as a video information enhancement frame, enabling the video data to have anti-tampering capability, and submitting video metadata to a video metadata module at regular time;
the user module is responsible for: the user passing the user identity authentication submits the video data application to the video sharing module through the user module; after receiving a video data application request, a user providing video metadata submits video data to a video sharing module through a user module;
the video sharing module is responsible for: submitting a video data application to a video metadata module; after receiving video data sent by a user module, calling a video verification module to verify the video data;
the video metadata module is responsible for: storing video source data submitted by a video acquisition terminal; after receiving the video data application, sending a video data application request to a user providing video metadata;
the video checking module is responsible for: verifying whether video data submitted by a user is tampered or forged; after the video data passes the verification, the video data is marked as a video to be downloaded, and the video to be downloaded is submitted to the user module by the video verification module;
the user authentication module is responsible for: authenticating the identity of the user;
the video verification module is responsible for verifying whether video data submitted by a user is tampered, and comprises the following steps:
step a, scanning video data, finding an information enhancement frame containing a video voucher code, and dividing the video data by using the information enhancement frame to obtain a check block consisting of a video data block and the information enhancement frame;
b, calculating the video data block by using a hash algorithm to obtain a hash code I;
step c, acquiring a hash code II from the block chain system by using a video voucher code in a check block consisting of the information enhancement frame;
d, judging whether the hash code I is the same as the hash code II, if so, indicating that the video data is not tampered, otherwise, tampering the video data;
the video verification module is responsible for verifying whether video data submitted by a user is forged or not, and comprises the following steps:
step a, decoding video data to obtain continuous video pictures;
b, dividing the video picture into a moving target part and a background part by using a moving target detection algorithm;
step c, using a picture similarity detection algorithm to compare whether the color, shape, luminance direction view and sift features in the background parts of two adjacent video pictures are similar, if the similarity of the color, shape, luminance direction view and sift features in the background parts of the adjacent video pictures does not meet the requirement, recording the position where the similarity in the background parts of the video pictures does not meet the requirement as a mutation position, and simultaneously recording the mutation times of the mutation position;
d, if the mutation times of the background part of the video picture exceed the specified times, marking the video data as suspected forgery, and if the mutation times of the background part of the video picture do not exceed the specified times, performing the next step;
and e, dividing the video data with the similar moving targets into a group by using a picture similarity detection algorithm, wherein the video data in the video group represents the video credibility of the video group, and the more the video data in the video group is, the higher the credibility of the video data is.
2. The video data sharing system of claim 1, wherein the metadata comprises: video acquisition terminal coding, geographic coordinates, video owner coding, and video acquisition time.
3. The video data sharing system according to claim 1, wherein the video data capturing process of the video capturing terminal is as follows:
step 1, accessing a user authentication module, acquiring a user code and a video metadata module access certificate, and submitting video metadata to a video metadata module at regular time according to the acquired video metadata module access certificate;
step 2, after obtaining the user code, starting to collect video data, and coding the collected video data to obtain coded video data;
step 3, buffering the coded video data in a queue to be signed;
step 4, when the queue to be signed meets the specified requirement, calculating the coded video data in the queue to be signed by using a hash algorithm to obtain a hash code;
step 5, submitting the hash code to a block chain system to obtain a video voucher code;
step 6, storing the coded video data in the queue to be signed and the information enhancement frame containing the video certificate code into a video file;
and 7, repeating the steps 2-6 until the user stops collecting the video.
4. A method for applying video data application using the video data sharing system as claimed in any one of claims 1 to 3, comprising the steps of:
step 1, a user performs identity authentication, and submits a video data application to a video sharing module through a user module after the authentication is passed;
step 2, the video sharing module submits a video data application to the video metadata module, and the video metadata module sends a video data application request to a user providing video metadata after receiving the video data application;
step 3, after receiving the video data application request, the user providing the video metadata submits the video data to the video sharing module;
step 4, after the video sharing module receives the video data, calling a video verification module to verify the video data;
step 5, after the video data passes the verification, the video data is marked as a video to be downloaded, and the video to be downloaded is submitted to the user module by the video verification module;
and 6, downloading the video data by the user through the user module.
5. The method of claim 4, wherein the video data application comprises: address coordinates and time period information.
6. The method of claim 4, wherein the video verification module verifies whether the video data is tampered with as follows:
step a, scanning video data, finding an information enhancement frame containing a video voucher code, and dividing the video data by using the information enhancement frame to obtain a check block consisting of a video data block and the information enhancement frame;
b, calculating the video data block by using a hash algorithm to obtain a hash code I;
step c, acquiring a hash code II from the block chain system by using a video voucher code in a check block consisting of the information enhancement frame;
and d, judging whether the hash code I is the same as the hash code II, if so, indicating that the video data is not tampered, otherwise, tampering the video data.
7. The method of claim 4, wherein the video verification module verifies whether the video data is forged by the following steps:
step a, decoding video data to obtain continuous video pictures;
b, dividing the video picture into a moving target part and a background part by using a moving target detection algorithm;
step c, using a picture similarity detection algorithm to compare whether the color, shape, luminance direction view and sift features in the background parts of two adjacent video pictures are similar, if the similarity of the color, shape, luminance direction view and sift features in the background parts of the adjacent video pictures does not meet the requirement, recording the position where the similarity in the background parts of the video pictures does not meet the requirement as a mutation position, and simultaneously recording the mutation times of the mutation position;
d, if the mutation times of the background part of the video picture exceed the specified times, marking the video data as suspected forgery, and if the mutation times of the background part of the video picture do not exceed the specified times, performing the next step;
and e, dividing the video data with the similar moving targets into a group by using a picture similarity detection algorithm, wherein the video data in the video group represents the video credibility of the video group, and the more the video data in the video group is, the higher the credibility of the video data is.
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