H.264 video encryption method based on region of interest

A technology of region of interest and encryption method, which is applied in the field of H.264 video encryption based on region of interest, and can solve the problems of large increase in data calculation processing volume and bit rate, etc.

Inactive Publication Date: 2014-01-29
CHONGQING TELECOMMUNICATION INSTITUTE
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Problems solved by technology

[0007] For the above-mentioned problems existing in the prior art, the object of the present invention is to propose a kind of H.264 video encryption method based on region of interest, can carry out real-time local encryption process to the region o

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  • H.264 video encryption method based on region of interest
  • H.264 video encryption method based on region of interest
  • H.264 video encryption method based on region of interest

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Embodiment Construction

[0066]The invention provides an H.264 video encryption and decryption method based on the region of interest. This method can be used to perform local encryption processing of the region of interest on the H.264 video to be encrypted frame by frame, so as to solve the encryption data calculation processing and encryption existing in the existing video encryption method for local encryption of the region of interest. After solving the problem of a large amount of code rate increase, and it can realize real-time encryption processing, which can be directly applied to the real-time playback of H.264 video.

[0067] In order to meet the needs of security in different situations, the H.264 video encryption method based on the region of interest of the present invention adopts an encryption processing scheme based on a three-level key, and the three-level key is respectively a sequence layer key and a frame layer key , Macroblock layer key. Among them, the parameter used to control...

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Abstract

The invention provides an H.264 video encryption method based on a region of interest. According to the method, an encryption processing scheme based on a three-level secret key is adopted, after a video encoding parameter of the region of interest in an H.264 video is changed by means of the three-level secret key, and then encoding processing is carried out by the direct adoption of an H.264 video encoding criterion, so that the effect of partial encryption of the region of interest is achieved, the situation that a pixel value in the region of interest is directly processed for encryption is avoided, data computation amount and operation complexity are reduced, encryption processing operation speed is beneficially increased, the increasing amount of the code rate after encryption is reduced, encrypted video data can be compatible with an H.264 standard encoder in a data format and can be directly applied to real-time playing of the H.264 video, besides, the method can eliminate encryption diffusion influences of encryption of the region of interest on a region of non-interest by combining and using a motion estimation drifting elimination technology, and the reading effect of the encrypted videos is improved.

Description

technical field [0001] The invention belongs to the technical field of information encryption in multimedia information security, and in particular relates to an H.264 video encryption method based on a region of interest, through which the region of interest in the H.264 video can be encrypted locally in real time, and Applied to real-time playback of H.264 video. Background technique [0002] Because of its intuition, universality and high information capacity, video occupies a very large proportion in people's life entertainment and information exchange. However, there are problems such as malicious tampering and eavesdropping in video transmission on the network, and multimedia security issues are becoming increasingly prominent. [0003] Video encryption technology is an important technology in the field of video data protection. Video encryption technology is to change the encoded video data stream or the data in the intermediate encoding process, so that the video d...

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Application Information

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IPC IPC(8): H04N19/00H04N19/176H04N19/129
Inventor 郭雨柏森朱桂斌郭辉唐鉴波
Owner CHONGQING TELECOMMUNICATION INSTITUTE
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