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A method, device and system for protecting image privacy

A privacy protection and picture technology, applied in the field of information security, can solve the problems of poor privacy protection performance and security performance

Active Publication Date: 2020-12-11
CHINA MOBILEHANGZHOUINFORMATION TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the embodiment of the present invention expects to provide a picture privacy protection method, device and system to solve the problem of poor privacy protection performance and security performance when protecting picture privacy

Method used

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  • A method, device and system for protecting image privacy
  • A method, device and system for protecting image privacy
  • A method, device and system for protecting image privacy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] see figure 1 , which shows a process of a picture privacy protection method, the method is used for a sending terminal, and the method includes:

[0111] S101: The sending terminal obtains the optimal sparse coefficient of the picture information corresponding to the picture on the representation dictionary;

[0112] S102: The sending terminal obtains a sparse threshold for distinguishing public information of a picture from private information of a picture according to the optimal sparse coefficient;

[0113] S103: The sending terminal acquires public picture information and private picture information according to the relationship between the sparse threshold and the optimal sparse coefficient and the representation dictionary;

[0114] S104: The sending terminal uploads the public information of the picture to a public website, obtains the ID assigned by the social networking site to the public information of the picture, names the private information of the picture...

Embodiment 2

[0157] see Figure 5 , which shows a process of a picture privacy protection method, the method is used for a receiving terminal, and the method includes:

[0158] S501: When the receiving terminal receives the URL request information including the ID of the public picture information, acquire the public picture information and the private picture information according to the ID of the public picture information;

[0159] S502: The receiving terminal acquires reconstructed sparse representation coefficients from the public picture information and private picture information according to a preset method;

[0160] S503: The receiving terminal acquires a composite picture according to the relationship between the reconstructed sparse representation coefficients and the representation dictionary.

[0161] For step S501, see Figure 6 When the receiving terminal receives a request message of a Uniform Resource Locator (URL, Uniform Resource Locator) containing the ID of the publi...

Embodiment 3

[0190] see Figure 8 , which shows a detailed method flow of picture privacy protection, the detailed method includes:

[0191] S801: The sending terminal obtains a sparse representation of the picture information corresponding to the picture on the representation dictionary;

[0192] S802: When the sparse representation satisfies the constraint condition, the sending terminal obtains the optimal sparse representation using a preset optimization method, and the sending terminal calls the optimal sparse representation an optimal sparse coefficient;

[0193] S803: The sending terminal obtains a sparse threshold for distinguishing the public information of the picture from the private information of the picture according to the optimal sparse coefficient;

[0194] S804: The sending terminal acquires public information coefficients and private information coefficients according to the relationship between the sparse threshold and the optimal sparse coefficient;

[0195] S805: Th...

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Abstract

Embodiments of the invention disclose a picture privacy protection method, device and system. The method comprises the following steps of: solving an optimum sparse coefficient, on an expression dictionary, of picture information corresponding to a picture by a transmission terminal; solving a sparse threshold value for distinguishing picture public information and picture private information by the transmission terminal according to the optimum sparse coefficient; obtaining the picture public information and the picture private information by the transmission terminal according to a relationship between the sparse threshold value and the optimum sparse coefficient and the expression dictionary; and uploading the picture public information to a social network by the transmission terminal,obtaining an ID distributed for the picture public information by the social network, naming the picture private information via the ID of the picture public information, and uploading the picture private information to a cloud storage website. According to the method, device and system, the problem that the privacy protection performance and safety are relatively bad during picture privacy protection is solved.

Description

technical field [0001] The present invention relates to the field of information security, in particular to a method, device and system for protecting picture privacy. Background technique [0002] Image sharing is an important operation for Internet users. Hundreds of millions of images are uploaded to image sharing websites or social networks every day. However, in recent years, data leakage incidents of website users have occurred frequently, and personal privacy protection has been increasingly concerned by researchers and the public. focus on. Image privacy protection is a very challenging problem, and is currently facing double threats from hacker attacks and face recognition systems such as social networking sites themselves or open source software. [0003] At present, there are two main solutions to the privacy protection of pictures: one is to cover the private information that users need to protect with mosaics or emoticons. Although this method is simple and pra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/62
CPCG06F21/6209
Inventor 袁静李应锋潘露娃时均见
Owner CHINA MOBILEHANGZHOUINFORMATION TECH CO LTD