CN104836991A - Camera with privacy protection function - Google Patents
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- CN104836991A CN104836991A CN201510233321.0A CN201510233321A CN104836991A CN 104836991 A CN104836991 A CN 104836991A CN 201510233321 A CN201510233321 A CN 201510233321A CN 104836991 A CN104836991 A CN 104836991A
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Abstract
The invention provides a camera with a privacy protection module, comprising an image preprocessing module, a privacy database, a privacy protecting module and a data transmission module. The camera of the invention can be used for identifying, marking and encrypting privacy content, which needs to be protected, by using the privacy protecting module, which is carried by the camera itself, and then transmitting the content back to a server so as to avoid the privacy content from being stolen and monitored in a transmission process.
Description
Technical field
The present invention relates at the public and camera of not common occasion for monitoring.
Background technology
Under some need to carry out the scene monitored, the privacy related in scene content maybe needs the content of maintaining secrecy, and does not wish to be seen by people, but maybe needs the content of enclosing in the content week of maintaining secrecy still to need to monitor for privacy.Traditional way is, camera collection to data pass server back, then to process.
In order to the private data of available protecting client; application number is that the application for a patent for invention of 201310068797.4 is by identifying private data to the detection of moving-target; and private data binaryzation or marginalisation are transmitted; or fractional transmission is carried out to private data; or all transmission after encryption, but, and the moving-target of not all needs protection; if protect all moving-targets and not only waste resource, and specific aim and the validity of protection can be reduced.
Application number is the application for a patent for invention of CN200410035084.9; adopt content-based image-recognizing method; as condition random field method (CRF); to the identification of objects in images, and then identify privacy content, then; test pattern Processing Algorithm is adopted to carry out moditied processing to this part; such as replace, delete, with satisfied protection privacy requirement.But the object in image is rich and varied, such as pedestrian, car plate, vehicle etc. all may occur in the picture simultaneously, and how to define privacy content, the document does not relate to.
The traditional method of current main flow processes privacy content at server end, and be complete from the data that camera spreads out of, and includes privacy and private data, so, exist in transmitting procedure and intercepted and captured, the possibility of monitoring; And being transferred to server, the link touched can be more, there is certain risk; In addition, the data volume of server end is huge, has objectively increased the weight of workload and the difficulty of process, has been unfavorable for reducing costs, improves speed.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of camera with secret protection module.For this reason, the present invention is by the following technical solutions:
There is a camera for privacy protection function, it is characterized in that it comprises:
Image pre-processing module, described image pre-processing module carries out Image semantic classification to the output image signal of camera image transducer, comprises noise reduction, regulates contrast, white balance;
Private data storehouse, registers by privacy the content that submodule registers and is formed, for store privacy content, by privacy matched sub-block transfer the privacy content registered;
Secret protection module, described secret protection module comprises three submodules: privacy registration submodule, privacy matched sub-block and privacy process submodule;
Described privacy registration submodule is used for for the person of having permission to camera definition privacy content, and the privacy content defined is stored in private data storehouse;
Privacy matched sub-block is used for when camera works, privacy content in described pretreated image and private data storehouse is compared, contain the image information corresponding to privacy content in private data storehouse when privacy matched sub-block recognizes in image, image transmitting is carried out secret protection process to privacy process submodule;
Described privacy process submodule adopts the method for computer standard image procossing to process, to meet the needs that user protects privacy to the privacy content identified in privacy matched sub-block;
Data transmission module, the view data after the process of privacy process submodule utilizes network to send back server or other terminal equipment by described data transmission module.
On the basis adopting technique scheme, the present invention also can adopt following further technical scheme:
The step of described privacy registration submodule definition privacy content comprises:
2-1, define a kind of descriptor to describe privacy content;
2-2, based on the descriptor defined in step 2-1, extract the characteristic vector of privacy content;
The statistical model of the method establishment privacy content of 2-3, employing statistical learning;
2-4, the statistical model of privacy content write ROM memory cell is completed privacy registration.
The step of described privacy matched sub-block identification privacy content comprises:
3-1, utilize background subtraction process detect moving target region;
3-2, the descriptor of privacy Registering modules definition is adopted to extract the characteristic vector of moving target and dimensionality reduction;
3-3, statistical model based on privacy content, do maximum a-posteriori estimation to the characteristic vector of moving target; If estimated value is greater than setting threshold, be judged to be privacy content; Otherwise be judged to be non-privacy content.
Described privacy process submodule adopts the method for computer standard image procossing to process, with the needs of satisfied protection privacy to the privacy content identified in privacy matched sub-block.
Owing to adopting technical scheme of the present invention; the secret protection module that the present invention can utilize camera self-contained identifies needing the privacy content of protection, mark, encrypts and then transmit back server, avoids privacy content and is stolen in transmitting procedure and the possibility monitored.
The present invention is intended to video camera end embedded secret protection module and solves the defect that conventional method private data in transmitting procedure is monitored or steal.It has following advantage: the first, is convenient to distributed treatment, greatly reduces workload and the difficulty of data processing, is conducive to the real-time improving process, and reduces costs; The second, evade in transmitting procedure all too many levels experienced, not only reduced the risk that private data is monitored and steal, and be conducive to improving transmission reliability, reduce the error rate; 3rd, for traditional method to the content-defined fuzzy problem of privacy, the invention provides privacy Registering modules, allowing user to define needing the privacy content of protection, improve specific aim and the validity of protection content.
Accompanying drawing explanation
Fig. 1 is the block diagram of embodiment provided by the present invention.
Fig. 2 is the flow chart of the present invention after privacy matched sub-block does not recognize privacy content.
Embodiment
The camera with privacy protection function provided by the present invention, comprising:
Image pre-processing module, described image pre-processing module carries out Image semantic classification to the output image signal of camera image transducer, comprises noise reduction, regulates contrast, white balance, to adapt to the monitoring needs of varying environment different weather; Imageing sensor of the present invention refers to general commercial CCD or cmos camera, and its effect monitoring scene is converted to digital picture to export;
Private data storehouse, registers by privacy the content that submodule registers and is formed, for store privacy content, by privacy matched sub-block transfer the privacy content registered; Registration and storage are all carried out by the present invention in camera, and privacy content can be avoided to register risk that is monitored in transmitting procedure or that steal.
Secret protection module, described secret protection module comprises three submodules: privacy registration submodule, privacy matched sub-block and privacy process submodule;
Described privacy registration submodule is used for for the person of having permission camera definition privacy content;
Privacy matched sub-block is used for when camera works, privacy content in described pretreated image and private data storehouse is compared, contain the image information corresponding to privacy content in private data storehouse when privacy matched sub-block recognizes in image, image transmitting is carried out secret protection process to privacy process submodule;
When privacy matching module does not find the privacy content matched with present frame in private data storehouse, just it is directly sent to data transmission module and passes present frame back server;
Described privacy process submodule adopts the method for computer standard image procossing to process, to meet the needs that user protects privacy to the privacy content identified in privacy matched sub-block;
In order to improve the real-time performance of process, avoid frame losing, privacy process submodule is by 2 CPU process images, and the image of a special disposal odd-numbered frame, the image of another special disposal even frame, guarantees to be disposed before next frame image arrives.
Data transmission module, the view data after the process of privacy process submodule utilizes network to send back server or other terminal equipment by described data transmission module.
Privacy of the present invention registration submodule defines privacy content for camera user, and privacy content is including but not limited to the vehicle etc. of specific or specific individual, certain vehicle or color or number; The step of definition privacy content comprises:
1, a kind of descriptor is defined to describe privacy content; Such as human body can adopt HOG descriptor, face that LBP descriptor, vehicle can be adopted can to adopt HOG descriptor.The available descriptor being used for describing privacy content also comprises: SIFT descriptor, SURF descriptor etc.About these descriptors definition and to use be now industry mature technology, be not repeated herein;
2, based on the descriptor defined in abovementioned steps, extract the characteristic vector of privacy content, if the vector dimension extracted is too high, then take the method for adding up pivot analysis to carry out dimensionality reduction; Vector after dimensionality reduction describes as the one of privacy content;
3, the statistical model of the method establishment privacy content of statistical learning is adopted; The description of model and storage self-defining; Conventional statistical modeling method is had ready conditions random field (CRF), SVMs (SVM) and Bayes (Bayes) etc.; The use of these methods is industry mature technology.
4, the statistical model of privacy content write ROM memory cell is completed privacy registration.
Privacy matched sub-block of the present invention and private data storehouse contrast, and identify privacy content for during camera operation.Privacy content recognition step comprises:
1, background subtraction process is utilized to detect moving target region;
2, the descriptor adopting privacy Registering modules to define is to extract the characteristic vector of moving target and PCA dimensionality reduction;
3, based on the statistical model of privacy content, maximum a-posteriori estimation is done to the characteristic vector of moving target; If estimated value is greater than setting threshold, be judged to be privacy content; Otherwise be judged to be non-privacy content; The setting of threshold value is arranged flexibly according to monitoring scene.
Privacy process submodule of the present invention adopts the method for computer standard image procossing to process, to meet the needs that user protects privacy to the privacy content identified in privacy matched sub-block.The pattern of process is including but not limited to as described below:
Pattern 1: carry out binary conversion treatment to privacy content, binarization method adopts Da-Jin algorithm (ostu) or fixed threshold method.
Pattern 2: carry out marginalisation process to privacy content, processing method adopts canny operator or sobel operator etc.
Mode 3: fuzzy or mess code process is carried out to privacy content.
It should be pointed out that embodiment described above is not whole embodiment of the present invention, just a part of embodiment of the present invention.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not paying creative work, all should be considered as protection scope of the present invention.
Claims (5)
1. there is a camera for privacy protection function, it is characterized in that it comprises:
Image pre-processing module, described image pre-processing module carries out Image semantic classification to the output image signal of camera image transducer, comprises noise reduction, regulates contrast, white balance;
Private data storehouse, registers by privacy the content that submodule registers and is formed, for store privacy content, by privacy matched sub-block transfer the privacy content registered;
Secret protection module, described secret protection module comprises three submodules: privacy registration submodule, privacy matched sub-block and privacy process submodule;
Described privacy registration submodule is used for for the person of having permission to camera definition privacy content, and the privacy content defined is stored in private data storehouse;
Privacy matched sub-block is used for when camera works, privacy content in described pretreated image and private data storehouse is compared, contain the image information corresponding to privacy content in private data storehouse when privacy matched sub-block recognizes in image, image transmitting is carried out secret protection process to privacy process submodule;
Described privacy process submodule adopts the method for computer standard image procossing to process, to meet the needs that user protects privacy to the privacy content identified in privacy matched sub-block;
Data transmission module, the view data after the process of privacy process submodule utilizes network to send back server or other terminal equipment by described data transmission module.
2. a kind of camera with privacy protection function as claimed in claim 1, is characterized in that the step of described privacy registration submodule definition privacy content comprises:
2-1, define a kind of descriptor to describe privacy content;
2-2, based on the descriptor defined in step 2-1, extract the characteristic vector of privacy content;
The statistical model of the method establishment privacy content of 2-3, employing statistical learning;
2-4, the statistical model of privacy content write ROM memory cell is completed privacy registration.
3. a kind of camera with privacy protection function as claimed in claim 2, is characterized in that the step of described privacy matched sub-block identification privacy content comprises:
3-1, utilize background subtraction process detect moving target region;
3-2, the descriptor of privacy Registering modules definition is adopted to extract the characteristic vector of moving target and dimensionality reduction;
3-3, statistical model based on privacy content, do maximum a-posteriori estimation to the characteristic vector of moving target; If estimated value is greater than setting threshold, be judged to be privacy content; Otherwise be judged to be non-privacy content.
4. a kind of camera with privacy protection function as claimed in claim 1; it is characterized in that described privacy process submodule adopts the method for computer standard image procossing to process, with the needs of satisfied protection privacy to the privacy content identified in privacy matched sub-block.
5. a kind of camera with privacy protection function as claimed in claim 1; it is characterized in that privacy process submodule is by 2 CPU process images; the image of a special disposal odd-numbered frame, the image of another special disposal even frame, guarantees to be disposed before next frame image arrives.
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| CN201510233321.0A CN104836991A (en) | 2015-05-08 | 2015-05-08 | Camera with privacy protection function |
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Cited By (9)
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| CN106803943A (en) * | 2016-03-31 | 2017-06-06 | 小蚁科技（香港）有限公司 | Video monitoring system and equipment |
| CN107273382A (en) * | 2016-04-08 | 2017-10-20 | 北京黎阳之光科技有限公司 | A kind of Transmission of graphic images system |
| CN107292345A (en) * | 2017-07-03 | 2017-10-24 | 贵州大学 | Privacy situation detection method |
| CN108235054A (en) * | 2017-12-15 | 2018-06-29 | 北京奇虎科技有限公司 | A kind for the treatment of method and apparatus of live video data |
| CN108366196A (en) * | 2018-01-25 | 2018-08-03 | 西安中科创达软件有限公司 | A method of protection picture privacy |
| CN111260537A (en) * | 2018-12-03 | 2020-06-09 | 珠海格力电器股份有限公司 | Image privacy protection method and device, storage medium and camera equipment |
| CN112057874A (en) * | 2020-09-10 | 2020-12-11 | 重庆五诶科技有限公司 | Game auxiliary system and method with privacy protection function |
| CN116248842A (en) * | 2023-05-12 | 2023-06-09 | 北京城建智控科技股份有限公司 | Image encryption method based on camera device |
| WO2024017418A3 (en) * | 2023-03-03 | 2024-03-14 | 浙江大学 | Camera with privacy protection function, and privacy protection method thereof |
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Cited By (12)
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| CN107273382A (en) * | 2016-04-08 | 2017-10-20 | 北京黎阳之光科技有限公司 | A kind of Transmission of graphic images system |
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| CN108235054A (en) * | 2017-12-15 | 2018-06-29 | 北京奇虎科技有限公司 | A kind for the treatment of method and apparatus of live video data |
| CN108366196A (en) * | 2018-01-25 | 2018-08-03 | 西安中科创达软件有限公司 | A method of protection picture privacy |
| CN108366196B (en) * | 2018-01-25 | 2020-09-01 | 西安中科创达软件有限公司 | Method for protecting picture privacy |
| CN111260537A (en) * | 2018-12-03 | 2020-06-09 | 珠海格力电器股份有限公司 | Image privacy protection method and device, storage medium and camera equipment |
| CN112057874A (en) * | 2020-09-10 | 2020-12-11 | 重庆五诶科技有限公司 | Game auxiliary system and method with privacy protection function |
| WO2024017418A3 (en) * | 2023-03-03 | 2024-03-14 | 浙江大学 | Camera with privacy protection function, and privacy protection method thereof |
| CN116248842A (en) * | 2023-05-12 | 2023-06-09 | 北京城建智控科技股份有限公司 | Image encryption method based on camera device |
| CN116248842B (en) * | 2023-05-12 | 2023-08-01 | 北京城建智控科技股份有限公司 | Image encryption method based on camera device |
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Application publication date: 20150812 |