Efficient video encryption method and apparatus
AssigneeIndustry Academy Cooperation Foundation of Sejong University
InventorsYoung Gab KIM, Deok Han KIM
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Abstract
Disclosed are a video encryption method and device capable of reducing the time required for encrypting a region of interest. The disclosed video encryption method includes selecting one or more target frames to be encrypted from among frames of a target video, detecting regions of interest in the target frame, and performing encryption on the regions of interest.
Claims14
A video encryption method comprising:
- selecting one or more target frames to be encrypted from among frames of a target video;
- detecting regions of interest in the target frames;
- and
- performing encryption on the regions of interest.
The video encryption method of claim, 1, wherein, in the selecting of the target frames, the target frames are selected according to a frequency of references to the frames of the target video.
The video encryption method of claim, 1, wherein, in the selecting of the target frames, an I-frame, a P-frame, and a B-frame of at least one layer that is lower than a B-frame of a highest layer are selected as the target frames.
The video encryption method of claim, 1, wherein the performing of the encryption on the regions of interest includes:
- identifying tiles including all or a part of the regions of interest in the target frames;
- and
- performing encryption on the identified tiles.
The video encryption method of claim, 4, wherein, in the performing of the encryption on the regions of interest, some syntax elements among syntax elements generated prior to an entropy encoding stage are selectively encrypted in the entropy encoding stage.
The video encryption method of claim, 5, wherein, in the performing of the encryption on the regions of interest, some syntax elements among the syntax elements for the identified tiles are encrypted.
A video encryption method comprising:
- receiving a target video;
- selecting some frames from among all frames of the target video as target frames;
- and
- encrypting the target frames.
The video encryption method of claim, 7, wherein, in the selecting of the some frames as the target frames, the target frames are selected according to a frequency of references to the frames of the target video.
The video encryption method of claim, 7, wherein, in the selecting of the some frames as the target frames, an I-frame, a P-frame, and a B-frame of at least one layer that is lower than a B-frame of a highest layer are selected as the target frames.
A video encryption device comprising:
- a memory;
- and
- at least one processor electrically connected to the memory,
- wherein the processor selects one or more target frames to be encrypted from among frames of a target video, detects regions of interest in the target frame, and performs encryption on the regions of interest.
The video encryption device of claim, 10, wherein the processor selects the target frames according to a frequency of references to the frames of the target video.
The video encryption device of claim, 10, wherein the processor selects an I-frame, a P-frame, and a B-frame of a layer that is lower than a B-frame of a highest layer as the target frames.
The video encryption device of claim, 12, wherein a layer of the B-frame selected as the target frames is adaptively determined according to resource usage of the video encryption device.
The video encryption device of claim, 10, wherein the processor identifies tiles including all or a part of the regions of interest in the target frames, and performs encryption on the identified tiles.
Dependencies are inferred from the claim text.