HEVC video encryption method based on region of interest
An area of interest and encryption method technology, which is applied in the field of information encryption in multimedia information security, can solve the problems of difficulty in recovering original information of ciphertext information in the area of interest, encryption of the area of interest in HEVC encoded video, and increase in bit rate.
Active Publication Date: 2021-01-19
JIANGSU UNIV
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Problems solved by technology
The region of interest encryption method designed for H.264 encoding cannot be used for the region of interest encryption of HEVC encoded video
There are also some methods to protect the region of interest through pseudo-random replacement and blurring in the pixel domain. Although such methods can be well combined with different coding standards, the method of pixel domain encryption breaks the image correlation of the original video area. , the code rate will increase during subsequent encoding, and it is difficult to restore the original information after lossy encoding of the ciphertext information in the region of interest
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[0060] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be pointed out that the technical solution and design principles of the present invention will be described in detail below only with an optimized technical solution, but the protection scope of the present invention does not limited to this.
[0061] The described embodiment is a preferred implementation of the present invention, but the present invention is not limited to the above-mentioned implementation, without departing from the essence of the present invention, any obvious improvement, replacement or modification that those skilled in the art can make Modifications all belong to the protection scope of the present invention.
[0062] In this experimental example, the region-of-interest-based HEVC video encryption method of the present invention is used to verify the region-of-interest encryption experiment on the Kimonol_1920x10...
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The invention belongs to the technical field of information encryption in multimedia information security, and particularly relates to an HEVC video encryption method based on a region of interest. According to the method, firstly, Tile division is determined according to the position of a region of interest by detecting the position of the region of interest in a video frame to be coded; then inthe entropy coding process, part of syntax elements of the Tile where the region of interest is located are selected to be encrypted. In order to avoid distortion of a non-encrypted area caused by encryption error drift of a video area, motion estimation and an MV prediction mode need to be limited in the encoding process. Compared with a region-of-interest video encryption method based on Tile division in advance, the method disclosed in the invention is advantageous in that the region-of-interest in the video frame can be positioned more accurately, and the amount of data needing to be encrypted is reduced.
Description
technical field [0001] The invention belongs to the technical field of information encryption in multimedia information security, and in particular relates to an HEVC video encryption method based on an area of interest. Background technique [0002] In recent years, with the rapid development of Internet and multimedia technology. Video signals have been widely used in daily life due to their large information carrying capacity and intuitive and efficient information transmission. However, cases of video information leakage in real life are not uncommon. If the leaked private information is used illegally, it may cause huge losses and harm to the victim. Some of the leaked information even involves commercial secrets and national security. Therefore, video information encryption is of great significance to ensure the information security of enterprises and countries. [0003] As a new generation video coding standard, HEVC has excellent video compression performance and...
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IPC IPC(8): H04N19/167H04N19/70H04N19/13H04N19/91H04N19/513H04L9/00
CPCH04N19/167H04N19/70H04N19/13H04N19/91H04N19/513H04L9/001
Inventor 金华朱靖宇王昌达宋雪桦申屠浩
Owner JIANGSU UNIV