CN107995525A - One kind encrypts online video watermark analysis process system based on safety - Google Patents

One kind encrypts online video watermark analysis process system based on safety Download PDF

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Publication number
CN107995525A
CN107995525A CN201711205286.7A CN201711205286A CN107995525A CN 107995525 A CN107995525 A CN 107995525A CN 201711205286 A CN201711205286 A CN 201711205286A CN 107995525 A CN107995525 A CN 107995525A
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CN
China
Prior art keywords
watermark
video frame
unit
module
key
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711205286.7A
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Chinese (zh)
Inventor
姚伟强
周基初
张宇
郑凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Asia Pacific Mdt Infotech Ltd
Original Assignee
Hefei Asia Pacific Mdt Infotech Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hefei Asia Pacific Mdt Infotech Ltd filed Critical Hefei Asia Pacific Mdt Infotech Ltd
Priority to CN201711205286.7A priority Critical patent/CN107995525A/en
Publication of CN107995525A publication Critical patent/CN107995525A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4408Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G06F21/16Program or content traceability, e.g. by watermarking
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/44008Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835Generation of protective data, e.g. certificates
    • H04N21/8358Generation of protective data, e.g. certificates involving watermark

Abstract

Online video watermark analysis process system is encrypted based on safety the invention discloses one kind, including video frame acquisition module, video frame chosen module, ID databases, watermark embedding module, video frame uploading module and analysis and processing module, the video frame acquisition module, video frame chosen module, ID databases, watermark embedding module, video frame uploading module are connected with analysis and processing module by wireless communication;By taking the dual mode of encryption and watermark, effectively prevent and original works is distorted, forged and is replicated.

Description

One kind encrypts online video watermark analysis process system based on safety
Technical field
The invention belongs to video technique field, and in particular to one kind encrypts online video watermark analyzing and processing system based on safety System.
Background technology
With the extensive use of Digital Media (digital picture, digital audio, digital video), its copyright protection is also increasingly heavy Will.
The rapid development of computer networking technology and multimedia technology to the work and life of people bring it is huge just Profit, video media easily obtain, replicate simply and propagate more and more artistic works, invention that the advantages that rapid is due to it Expressed with intention all in the form of video data.But the opening and sharing of network are utilized, original works is usurped Change, forge, replicating and illegal distribution becomes a lead-pipe cinch feelings, the person that seriously compromises creation of works and user's Interests.Therefore, how come to protect the authenticity and integrity of the copyright of video work and works content be one urgently to be resolved hurrily The problem of.
The digital watermark of video is that pager is embedded into video media, has reached protection works copyright and has prevented works The effective ways being maliciously tampered.As effective means of supplementing out economy of conventional encryption methods, digital watermarking (digital Watermarking the great attention of people) is caused in recent years and is increasingly becoming a research of field of multimedia signal processing Hot spot.
The content of the invention
Online video watermark analysis process system is encrypted based on safety it is an object of the invention to provide one kind, by taking Encryption and the dual mode of watermark, effectively prevent and original works are distorted, forged and is replicated.
The purpose of the present invention can be achieved through the following technical solutions:
One kind encrypts online video watermark analysis process system, including the choosing of video frame acquisition module, video frame based on safety Cover half block, ID databases, watermark embedding module, video frame uploading module and analysis and processing module, the video frame obtain mould Block, video frame chosen module, ID databases, watermark embedding module, video frame uploading module and analysis and processing module pass through wireless Communication connection;
The video frame chosen module, selectes the region for needing to add watermark from the video frame of acquisition, and will have The video frame information of order is specified to be sent to watermark embedding module;
The ID databases, for storing ID codes;
Watermark embedding module, including microprocessor, watermark edit cell, watermark connection unit, watermark data storehouse, key fortune Unit, Key generating unit and watermark embedder unit are calculated, watermark embedding module, which is used for insertion in the video frame, has encrypted water Print;
The microprocessor, containing database, can store video frame, while the passage transmitted as information, according to The video frame chosen module transmission of reception has the video frame information for specifying order, is simultaneously emitted by instruction and gives watermark edit cell With key arithmetic element, then video frame is exported to watermark embedder unit;
The watermark edit cell, receives the instruction of microprocessor, the watermark in watermark data storehouse is extracted, according to video Frame selection area size, to watermark into edlin, and the watermark information after editor is exported to watermark connection unit;
The watermark connection unit connects watermark edit cell and watermark embedder unit respectively, and watermark connection unit is used for The transmission of watermark information;
The watermark data storehouse, for storing watermark;
The key arithmetic element, receives the instruction of microprocessor, calculates encrypted instruction and key instruction, and will refer to Order is exported to Key generating unit;
The Key generating unit, receives encrypted instruction and the key instruction of the conveying of key arithmetic element, transfers ID numbers According to the ID codes in storehouse, ID codes are added separately to encrypted instruction and key instructs, that is, generate encryption information and key information, will The encryption information and key information of generation are exported to tree shade embedded unit;
The watermark information of reception and encryption information, are embedded in the selected area of video frame by watermark embedder unit with key information In domain, the video frame after insertion is exported to video frame uploading module.
Further, the video frame acquisition module, for intercepting the video frame for needing to add watermark.
Further, the video frame uploading module is connected with analysis and processing module, and video frame uploading module is used to upload Encrypted watermark video frame.
Further, the analysis and processing module includes analytic unit, video frame decryption unit, key storing unit, again Secondary uploading unit, video frame extraction unit and watermark eliminate unit;
The analytic unit, analyzes the video frame of upload, if encryption, and if watermark meets the requirements, According to crypto-analysis formula RM=SQRT { EV*AV/ (USL-LSL) }, if it is to continue upload to refer to obtain analysis result instruction 1 Order, video frame is exported to video frame decryption unit, if it is to eliminate instruction to obtain analysis result instruction 0, video frame is exported To video frame extraction unit;
The video frame decryption unit, exports to close for parsing the key information in video frame, and by key information Key storage unit, then exports the encrypted video frame containing watermark to uploading unit again;
The key storing unit, the key information for the parsing of storage frame decryption unit;
The uploading unit again, for uploading the encrypted video frame containing watermark;
The video frame extraction unit, exports to water for the video frame of extraction and analysis unit transportation, and by video frame Print eliminates unit;
The watermark eliminates unit, for eliminating unqualified watermark and encryption information and key information in video frame, Video frame is returned to video frame chosen module and re-starts embedded watermark.
Beneficial effects of the present invention:
It is provided by the invention a kind of based on the online video watermark analysis process system of safety encryption, need to add by selected The video frame region of watermark, edits the watermark of corresponding region, calculates encryption information and key information, by encryption information, close Key information and watermark are together embedded into video frame,, will be qualified encrypted by the analysis to video frame during upload Video frame containing watermark continues to upload, but extracts key information therein, prevent video frame upload after to video work Forgery and duplication, for underproof video frame, take unqualified watermark and encryption information and the key eliminated in video frame Information, and video frame is returned to video frame chosen module and re-starts embedded watermark;So take encryption and watermark Dual mode, effectively prevents and original works is distorted, forged and is replicated.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, embodiment will be described below required Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached Figure.
Fig. 1 encrypts online video watermark analysis process system schematic diagram for the present invention is a kind of based on safety.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained all other without creative efforts Embodiment, belongs to the scope of protection of the invention.
Refering to Figure 1, of the invention is a kind of based on the online video watermark analysis process system of safety encryption, including regarding Frequency frame acquisition module, video frame chosen module, ID databases, watermark embedding module, video frame uploading module and analyzing and processing mould Block, the video frame acquisition module, video frame chosen module, ID databases, watermark embedding module, video frame uploading module and Analysis and processing module is connected by wireless communication.
The video frame acquisition module, for intercepting the video frame for needing to add watermark.
The video frame chosen module, selectes the region for needing to add watermark from the video frame of acquisition, and will have The video frame information of order is specified to be sent to watermark embedding module.
The ID databases, for storing ID codes.
Watermark embedding module, including microprocessor, watermark edit cell, watermark connection unit, watermark data storehouse, key fortune Unit, Key generating unit and watermark embedder unit are calculated, watermark embedding module, which is used for insertion in the video frame, has encrypted water Print;
The microprocessor, containing database, can store video frame, while the passage transmitted as information, according to The video frame chosen module transmission of reception has the video frame information for specifying order, is simultaneously emitted by instruction and gives watermark edit cell With key arithmetic element, then video frame is exported to watermark embedder unit;
The watermark edit cell, receives the instruction of microprocessor, the watermark in watermark data storehouse is extracted, according to video Frame selection area size, to watermark into edlin, and the watermark information after editor is exported to watermark connection unit;
The watermark connection unit connects watermark edit cell and watermark embedder unit respectively, and watermark connection unit is used for The transmission of watermark information;
The watermark data storehouse, for storing watermark;
The key arithmetic element, receives the instruction of microprocessor, calculates encrypted instruction and key instruction, and will refer to Order is exported to Key generating unit;
The Key generating unit, receives encrypted instruction and the key instruction of the conveying of key arithmetic element, transfers ID numbers According to the ID codes in storehouse, ID codes are added separately to encrypted instruction and key instructs, that is, generate encryption information and key information, will The encryption information and key information of generation are exported to tree shade embedded unit;
The watermark information of reception and encryption information, are embedded in the selected area of video frame by watermark embedder unit with key information In domain, the video frame after insertion is exported to video frame uploading module.
The video frame uploading module is connected with analysis and processing module, and video frame uploading module is used to upload encrypted water Print video frame.
The analysis and processing module includes analytic unit, video frame decryption unit, again key storing unit, upper leaflet Member, video frame extraction unit and watermark eliminate unit;
The analytic unit, analyzes the video frame of upload, if encryption, and if watermark meets the requirements, According to crypto-analysis formula RM=SQRT { EV*AV/ (USL-LSL) }, if it is to continue upload to refer to obtain analysis result instruction 1 Order, video frame is exported to video frame decryption unit, if it is to eliminate instruction to obtain analysis result instruction 0, video frame is exported To video frame extraction unit;
The video frame decryption unit, exports to close for parsing the key information in video frame, and by key information Key storage unit, then exports the encrypted video frame containing watermark to uploading unit again;
The key storing unit, the key information for the parsing of storage frame decryption unit;
The uploading unit again, for uploading the encrypted video frame containing watermark;
The video frame extraction unit, exports to water for the video frame of extraction and analysis unit transportation, and by video frame Print eliminates unit;
The watermark eliminates unit, for eliminating unqualified watermark and encryption information and key information in video frame, Video frame is returned to video frame chosen module and re-starts embedded watermark.
It is provided by the invention a kind of based on the online video watermark analysis process system of safety encryption, need to add by selected The video frame region of watermark, edits the watermark of corresponding region, calculates encryption information and key information, by encryption information, close Key information and watermark are together embedded into video frame,, will be qualified encrypted by the analysis to video frame during upload Video frame containing watermark continues to upload, but extracts key information therein, prevent video frame upload after to video work Forgery and duplication, for underproof video frame, take unqualified watermark and encryption information and the key eliminated in video frame Information, and video frame is returned to video frame chosen module and re-starts embedded watermark;So take encryption and watermark Dual mode, effectively prevents and original works is distorted, forged and is replicated.
Above content is only to design example and explanation of the invention, affiliated those skilled in the art Various modifications or additions are done to described specific embodiment or are substituted in a similar way, without departing from invention Design or surmount scope defined in the claims, be within the scope of protection of the invention.

Claims (4)

1. one kind encrypts online video watermark analysis process system based on safety, it is characterised in that:Including video frame acquisition module, Video frame chosen module, ID databases, watermark embedding module, video frame uploading module and analysis and processing module, the video Frame acquisition module, video frame chosen module, ID databases, watermark embedding module, video frame uploading module and analysis and processing module Connected by wireless communication;
The video frame chosen module, selectes the region for needing to add watermark from the video frame of acquisition, and will have and specify The video frame information of order is sent to watermark embedding module;
The ID databases, for storing ID codes;
Watermark embedding module, including microprocessor, watermark edit cell, watermark connection unit, watermark data storehouse, key computing list Member, Key generating unit and watermark embedder unit, watermark embedding module, which is used for insertion in the video frame, has encrypted watermark;
The microprocessor, containing database, can store video frame, while as the passage of information transmission, according to reception The transmission of video frame chosen module there is the video frame information for specifying order, be simultaneously emitted by instruction to watermark edit cell and close Key arithmetic element, then exports video frame to watermark embedder unit;
The watermark edit cell, receives the instruction of microprocessor, extracts the watermark in watermark data storehouse, is selected according to video frame Determine area size, to watermark into edlin, and the watermark information after editor is exported to watermark connection unit;
The watermark connection unit connects watermark edit cell and watermark embedder unit respectively, and watermark connection unit is used for watermark The transmission of information;
The watermark data storehouse, for storing watermark;
The key arithmetic element, receives the instruction of microprocessor, calculates encrypted instruction and key instruction, and will instruct defeated Go out to Key generating unit;
The Key generating unit, receives encrypted instruction and the key instruction of the conveying of key arithmetic element, transfers ID databases In ID codes, ID codes are added separately to encrypted instruction and key and are instructed, that is, generates encryption information and key information, will generate Encryption information and key information export to tree shade embedded unit;
The watermark information of reception and encryption information, are embedded in the selection area of video frame by watermark embedder unit with key information In, the video frame after insertion is exported to video frame uploading module.
It is 2. according to claim 1 a kind of based on the online video watermark analysis process system of safety encryption, it is characterised in that: The video frame acquisition module, for intercepting the video frame for needing to add watermark.
It is 3. according to claim 1 a kind of based on the online video watermark analysis process system of safety encryption, it is characterised in that: The video frame uploading module is connected with analysis and processing module, and video frame uploading module is used to upload encrypted watermark video Frame.
It is 4. according to claim 1 a kind of based on the online video watermark analysis process system of safety encryption, it is characterised in that: The analysis and processing module includes analytic unit, video frame decryption unit, again key storing unit, uploading unit, video Frame extraction unit and watermark eliminate unit;
The analytic unit, analyzes the video frame of upload, if encryption, and if watermark meets the requirements, according to Crypto-analysis formula RM=SQRT { EV*AV/ (USL-LSL) }, will if it is to continue uploading instructions to obtain analysis result instruction 1 Video frame is exported to video frame decryption unit, if it is to eliminate instruction to obtain analysis result instruction 0, video frame is exported to video Frame extraction unit;
The video frame decryption unit, for parsing the key information in video frame, and key information is exported to key and is deposited Storage unit, then exports the encrypted video frame containing watermark to uploading unit again;
The key storing unit, the key information for the parsing of storage frame decryption unit;
The uploading unit again, for uploading the encrypted video frame containing watermark;
The video frame extraction unit, for the video frame of extraction and analysis unit transportation, and video frame is exported to watermark and is disappeared Except unit;
The watermark eliminates unit, for eliminating unqualified watermark and encryption information and key information in video frame, will regard Frequency frame returns to video frame chosen module and re-starts embedded watermark.
CN201711205286.7A 2017-11-27 2017-11-27 One kind encrypts online video watermark analysis process system based on safety Pending CN107995525A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109040026A (en) * 2018-07-11 2018-12-18 深圳市网心科技有限公司 A kind of authorization method of digital asset, device, equipment and medium
CN112911187A (en) * 2020-11-30 2021-06-04 泰州市出彩网络科技有限公司 System and method for judging video data tampering
CN112954403A (en) * 2019-11-26 2021-06-11 腾讯科技(深圳)有限公司 Video encryption method, device, equipment and storage medium

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1373609A (en) * 2001-02-09 2002-10-09 佳能株式会社 Information processing device and control method, computer program and storage medium
US6865747B1 (en) * 1999-04-01 2005-03-08 Digital Video Express, L.P. High definition media storage structure and playback mechanism
CN1710610A (en) * 2005-07-04 2005-12-21 杭州天谷信息科技有限公司 Digital watermark anti fake method in anti-digital-to-analog conversion process
CN1812541A (en) * 2005-12-27 2006-08-02 浪潮电子信息产业股份有限公司 Digital copyright and digital watermark protecting method for video program
CN1882081A (en) * 2006-05-11 2006-12-20 北京经天科技有限公司 Authentic data embedding algorithm aiming at network video
CN1968080A (en) * 2006-09-06 2007-05-23 四川长虹电器股份有限公司 Method for privacy protection in digital media application
CN101262599A (en) * 2007-03-08 2008-09-10 美国博通公司 Method and system for data processing
CN101409818A (en) * 2008-11-26 2009-04-15 浪潮电子信息产业股份有限公司 System for managing digital television copyright based on digital watermarking and condition-receiving technology
CN102088611A (en) * 2011-03-10 2011-06-08 上海交通大学 H.264 standard motion vector-based method for embedding and extracting fragile watermark
CN102547254A (en) * 2010-11-26 2012-07-04 中国科学院声学研究所 Method and system for digital video image copyright protection based on watermarks and encryption

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6865747B1 (en) * 1999-04-01 2005-03-08 Digital Video Express, L.P. High definition media storage structure and playback mechanism
CN1373609A (en) * 2001-02-09 2002-10-09 佳能株式会社 Information processing device and control method, computer program and storage medium
CN1710610A (en) * 2005-07-04 2005-12-21 杭州天谷信息科技有限公司 Digital watermark anti fake method in anti-digital-to-analog conversion process
CN1812541A (en) * 2005-12-27 2006-08-02 浪潮电子信息产业股份有限公司 Digital copyright and digital watermark protecting method for video program
CN1882081A (en) * 2006-05-11 2006-12-20 北京经天科技有限公司 Authentic data embedding algorithm aiming at network video
CN1968080A (en) * 2006-09-06 2007-05-23 四川长虹电器股份有限公司 Method for privacy protection in digital media application
CN101262599A (en) * 2007-03-08 2008-09-10 美国博通公司 Method and system for data processing
CN101409818A (en) * 2008-11-26 2009-04-15 浪潮电子信息产业股份有限公司 System for managing digital television copyright based on digital watermarking and condition-receiving technology
CN102547254A (en) * 2010-11-26 2012-07-04 中国科学院声学研究所 Method and system for digital video image copyright protection based on watermarks and encryption
CN102088611A (en) * 2011-03-10 2011-06-08 上海交通大学 H.264 standard motion vector-based method for embedding and extracting fragile watermark

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109040026A (en) * 2018-07-11 2018-12-18 深圳市网心科技有限公司 A kind of authorization method of digital asset, device, equipment and medium
CN112954403A (en) * 2019-11-26 2021-06-11 腾讯科技(深圳)有限公司 Video encryption method, device, equipment and storage medium
CN112954403B (en) * 2019-11-26 2023-02-17 深圳市雅阅科技有限公司 Video encryption method, device, equipment and storage medium
CN112911187A (en) * 2020-11-30 2021-06-04 泰州市出彩网络科技有限公司 System and method for judging video data tampering

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Application publication date: 20180504