CN107371041A - A kind of VR video encryption methods and device - Google Patents
A kind of VR video encryption methods and device Download PDFInfo
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- CN107371041A CN107371041A CN201710748884.2A CN201710748884A CN107371041A CN 107371041 A CN107371041 A CN 107371041A CN 201710748884 A CN201710748884 A CN 201710748884A CN 107371041 A CN107371041 A CN 107371041A
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- 238000010586 diagram Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 4
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- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 2
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- 238000004891 communication Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention provides a kind of VR video encryption methods and device, including VR videos are projected in rectangular surfaces；Grid division is carried out to the VR videos in the rectangular surfaces and is encoded；Upset at random according to the numbering in the rectangular surfaces, to issue the video after upsetting at random.Therefore, VR video encryption methods of the present invention and device can solve the problem that in the prior art without the technical problem being encrypted for VR videos.
Description
Technical field
The present invention relates to photography and vedio recording field, more particularly to a kind of VR video encryption methods and device.
Background technology
At present, increasing people watches VR videos, the viewing effect that experience VR video tape is come.So as to be greatly facilitated
Making, distribution and the popularization of VR videos.Wherein, VR videos refer to the professional VR camera functions of people by site environment truly
The video recorded.
In process of the present invention is realized, inventor has found that at least there are the following problems in the prior art：At present except common
Outside the encipherment scheme of video, not for the special encryption technology of VR videos.
The content of the invention
In view of this, the present invention provides a kind of VR video encryption methods and device, and can solve the problem that does not have pin in the prior art
The technical problem that VR videos are encrypted.
To achieve the above object, according to an aspect of the invention, there is provided a kind of VR video encryption methods.
VR video encryption methods of the present invention include：VR videos are projected in rectangular surfaces；VR in the rectangular surfaces is regarded
Frequency carries out grid division and encoded；Upset at random according to the numbering in the rectangular surfaces, to issue regarding after upsetting at random
Frequently.
Alternatively, upset at random according to the numbering in the rectangular surfaces, to issue the video after upsetting at random, bag
Include：Upset at random according to the numbering in the rectangular surfaces, the numbering in the rectangular surfaces is upset at random, to obtain
Upset table at random；According to the random video upset table, issue after random upset.
Alternatively, grid division is carried out to the VR videos in the rectangular surfaces and is encoded, including：Rectangular surfaces are divided into N number of
Grid, wherein N=a*b, a are the block number laterally divided, and b is longitudinally divided block number.
Alternatively, upset at random according to the numbering in the rectangular surfaces, including：One integer M is set to key, led to
Cross using key M as random number seed, upset the N number of grid having in numbered rectangular surfaces.
Alternatively, the VR videos are projected in rectangular surfaces using spherical projection method.
Other side according to embodiments of the present invention, a kind of VR video-encryptions device, including projection module are additionally provided,
For VR videos to be projected into rectangular surfaces；Coding module, for carrying out grid division simultaneously to the VR videos in the rectangular surfaces
Coding；Upset module, for being upset at random according to the numbering in the rectangular surfaces, to issue the video after upsetting at random.
Alternatively, the module of upsetting is upset at random according to the numbering in the rectangular surfaces, is upset at random with issue
Video afterwards, including：Upset at random according to the numbering in the rectangular surfaces, the numbering in the rectangular surfaces is carried out random
Upset, upset table at random to obtain；According to the random video upset table, issue after random upset.
Alternatively, the coding module carries out grid division to the VR videos in the rectangular surfaces and encoded, including：By square
Shape face is divided into N number of grid, and N=a*b, wherein a are the block number laterally divided, and b is longitudinally divided block number.
Alternatively, the module of upsetting is upset at random according to the numbering in the rectangular surfaces, including：By an integer
M is set to key, by using key M as random number seed, upsetting the N number of grid having in numbered rectangular surfaces.
Alternatively, the VR videos are projected in rectangular surfaces using spherical projection method.
Technique according to the invention scheme, because employing by the way that VR videos are projected in rectangular surfaces, according to the square
Numbering on shape face is upset at random, to issue the technical scheme of the video after upsetting at random.So overcome prior art
In there is no the technical problem being encrypted for VR videos.
Further effect adds hereinafter in conjunction with embodiment possessed by above-mentioned non-usual optional mode
With explanation.
Brief description of the drawings
Accompanying drawing is used to more fully understand the present invention, does not form inappropriate limitation of the present invention.Wherein：
Fig. 1 is the main flow schematic diagram according to a kind of VR video encryption methods of embodiment of the present invention；
Fig. 2 is the main flow schematic diagram that VR video encryption methods in embodiment are referred to according to the present invention；
Fig. 3 is the primary structure schematic diagram according to VR video-encryptions device in embodiment of the present invention；
Fig. 4 is the main flow schematic diagram according to a kind of VR decryption of video method of embodiment of the present invention；
Fig. 5 is the main flow schematic diagram that VR decryption of video method in embodiment is referred to according to the present invention；
Fig. 6 is the primary structure schematic diagram according to VR decryption of video device in embodiment of the present invention.
Embodiment
The one exemplary embodiment of the present invention is explained below in conjunction with accompanying drawing, including the various of the embodiment of the present invention
Details should think them only exemplary to help understanding.Therefore, those of ordinary skill in the art should recognize
Arrive, various changes and modifications can be made to the embodiments described herein, without departing from scope and spirit of the present invention.Together
Sample, for clarity and conciseness, the description to known function and structure is eliminated in following description.
Fig. 1 is according to a kind of main flow schematic diagram of VR video encryption methods of embodiment of the present invention, such as Fig. 1 institutes
Show, the VR video encryption methods include：
Step S101, VR videos are projected in rectangular surfaces.
In embodiment, the VR videos are the videos played out using projecting on a sphere, that is to say, that will
It is to project to the video on a sphere in rectangular surfaces that VR videos, which are projected in rectangular surfaces,.Further, using spherical projection
Method Equirectangular is by the spherical projection of VR videos to rectangular surfaces.
Step S102, grid division is carried out to the VR videos in the rectangular surfaces and is encoded.
In one preferably embodiment, the VR videos in the rectangular surfaces are divided into N number of grid, and to described N number of
Grid is numbered.Further, rectangular surfaces are divided into N number of grid, N=a*b, wherein a are the block number laterally divided, and b is vertical
To the block number of division.
Step S103, upset at random according to the numbering in the rectangular surfaces, to issue the video after upsetting at random.
As embodiment, upset at random according to the numbering in the rectangular surfaces, the numbering in the rectangular surfaces is entered
Row is upset at random.Then, obtain and upset table at random, according to the random video upset table, issue after random upset.
According to the embodiment of the various VR video encryption methods above, it can be seen that encryption is simply during projection
A projective transformation has been superimposed, has not caused extra performance to be lost, undelayed encryption can be accomplished.In addition, listener-in without
Method knows that the specific of numbering upsets mode, also can not just be cracked, so as to which described VR video encryption method securities are very high.
Fig. 2 is according to the main flow schematic diagram of the invention for referring to VR video encryption methods in embodiment, the VR
Video encryption method, it can include：
Step S201, VR videos are projected in rectangular surfaces.
It is preferred that using spherical projection method Equirectangular by the spherical projection of VR videos to rectangular surfaces.Specifically
Implementation process include：
Latitude and longitude are set to the sphere of VR videos：λ is the longitude of sphere, and east longitude is positive number, and west longitude is negative, and scope is：
[-180,180].φ is the latitude of sphere, and north latitude is positive number, and south latitude is negative, and scope is：[-90,90].So, sphere is to square
The projective transformation of shape is：X=(λ+180)/360；Y=(φ+90)/180.
Step S202, the VR videos in the rectangular surfaces are divided into N number of grid, and described N number of grid is numbered.
It is preferred that rectangular surfaces are divided into N number of grid, N=a*b, wherein a are the block number laterally divided, and b is longitudinally divided
Block number.
Step S203, the numbering in the rectangular surfaces is upset at random.
In embodiment, when the numbering in rectangular surfaces is upset at random, an integer M can be set to key, passed through
Using key M as random number seed, upset N number of grid.That is, upsetting institute using key M as random number seed
N number of grid can be circulated when stating N number of grid, current grid and some random grid after the current grid are handed over
Change.It should be noted that random number seed and random number algorithm are fixed, so the order that grid is upset also is fixed.
Specifically, the array Z that is made up of grid N=a*b is carried out it is random upset swap (Z [i], Z [random (i,
b)]).Wherein, swap is used for exchanging two numbers, and random (i, b) is the random number among i and b, i span for [1,
B], and random number seed is M.
Step S204, acquisition upset table at random.
Wherein, it is described random to upset table and be stored with the numbering for upsetting rear grid.
Step S205, according to the random video upset table, issue after random upset.
In embodiment, numbering VR videos corresponded in rectangle is upset, that is, the pixel in VR videos is realized and beaten
Disorderly, so as to realize the encryption of VR videos.
It should be noted that the specific implementation content of VR video encryption methods described in embodiment is referred in the present invention,
It has been described in detail in VR video encryption methods described above, therefore has no longer illustrated in this duplicate contents.
In the another aspect of the embodiment of the present invention, a kind of VR video-encryptions device is given, as shown in fig.3, described
VR video-encryptions device 300 includes projection module 301, coding module 302 and upsets module 303.Wherein, projection module 301 will
VR videos are projected in rectangular surfaces, and coding module 302 carries out grid division to the VR videos in the rectangular surfaces and encoded.Then
Upset module 303 according to the numbering in the rectangular surfaces at random to be upset, to issue the video after at random upsetting.
In one preferably embodiment, upset module 303 and upset at random according to the numbering in the rectangular surfaces, will
Numbering in the rectangular surfaces is upset at random.Then, obtain upset table at random, upset table at random according to described, issue with
Machine upset after video.
As another embodiment, the VR videos in the rectangular surfaces are divided into N number of grid by coding module 302, and to institute
The N number of grid stated is numbered.Further, rectangular surfaces are divided into N number of grid, N=a*b, wherein a are the block laterally divided
Number, b is longitudinally divided block number.
In addition, upsetting module 303 when the numbering in rectangular surfaces is upset at random, an integer M can be set to key,
By using key M as random number seed, upsetting N number of grid.That is, beaten using key M as random number seed
N number of grid disorderly can be circulated during N number of grid, by current grid and some random grid after the current grid
Exchange.
Also what deserves to be explained is, projection module 301 uses spherical projection method Equirectangular by the sphere of VR videos
Project in rectangular surfaces.
It should be noted that in the specific implementation content of VR video-encryptions device of the present invention, VR described above is regarded
It has been described in detail in frequency encryption method, therefore has no longer illustrated in this duplicate contents.
Fig. 4 is according to a kind of main flow schematic diagram of VR decryption of video method of embodiment of the present invention, such as Fig. 4 institutes
Show, the VR decryption of video method includes：
Step S401, VR videos are projected in rectangular surfaces.
In embodiment, the VR videos are the videos played out using projecting on a sphere, that is to say, that will
It is to project to the video on a sphere in rectangular surfaces that VR videos, which are projected in rectangular surfaces,.Further, using spherical projection
Method Equirectangular is by the spherical projection of VR videos to rectangular surfaces.
Step S402, the VR videos in the rectangular surfaces are divided into multiple grid and numbered.
In one preferably embodiment, the VR videos in the rectangular surfaces are divided into N number of grid, and to described N number of
Grid is numbered.It should be noted that the grid quantity for dividing the rectangular surfaces during decryption divides with rectangular surfaces during encryption
Grid quantity it is consistent.Further, rectangular surfaces are divided into N number of grid, N=a*b, wherein a are the block number laterally divided, and b is
Longitudinally divided block number.
Step S403, key M is obtained, the numbering in the rectangular surfaces is upset at random, after issuing random upset
Video.
It is preferred that the array Z that is made up of grid N=a*b is carried out it is random upset swap (Z [i], Z [random (i,
b)]).Wherein, swap is used for exchanging two numbers, and random (i, b) is the random number among i and b, i span for [1,
B], and random number seed is key M.
According to the embodiment of the various VR decryption of video methods above, it can be seen that decryption is simply during projection
A projective transformation has been superimposed, has not caused extra performance to be lost, undelayed decryption can be accomplished.Meanwhile listener-in without
Method knows that the specific of numbering upsets mode, also can not just be cracked, so as to which described VR decryption of video method security is very high.
Fig. 5 is according to the main flow schematic diagram of the invention for referring to VR decryption of video method in embodiment, the VR
Decryption of video method, it can include：
Step S501, VR videos are projected in rectangular surfaces.
It is preferred that using spherical projection method Equirectangular by the spherical projection of VR videos to rectangular surfaces.Specifically
Implementation process include：
Latitude and longitude are set to the sphere of VR videos：λ is the longitude of sphere, and east longitude is positive number, and west longitude is negative, and scope is：
[-180,180].φ is the latitude of sphere, and north latitude is positive number, and south latitude is negative, and scope is：[-90,90].So, sphere is to square
The projective transformation of shape is：X=(λ+180)/360；Y=(φ+90)/180.
Step S502, the VR videos in the rectangular surfaces are divided into N number of grid and are numbered.
Wherein, rectangular surfaces are divided into N number of grid, N=a*b, wherein a are the block number laterally divided, and b is longitudinally divided block
Number.Meanwhile the grid quantity divided during decryption is identical with the grid quantity divided during encryption.
Step S503, obtain key M during encryption.
It is preferred that the key M in ciphering process can be obtained by encryption communication means.Such as：It can be assisted using https
View carrys out login authentication, and key M is obtained with https agreements after logining successfully.
Step S504, according to the key M, the numbering in the rectangular surfaces is upset at random.
In embodiment, when the numbering in rectangular surfaces is upset at random, obtaining key M, (the key M is when encrypting
Key), by using key M as random number seed, upsetting N number of grid.That is, using key M as random number
Seed can circulate N number of grid when upsetting N number of grid, by current grid and some after the current grid with
Machine grid exchanges.I.e. using key M as random number seed, the array of VR videos numbering reduction is obtained.
Specifically, the array Z that is made up of grid N=a*b is carried out it is random upset swap (Z [i], Z [random (i,
b)]).Wherein, swap is used for exchanging two numbers, and random (i, b) is the random number among i and b, i span for [1,
B], and random number seed is key M.
Step S505, acquisition upset table at random.Upset table at random after reduction that is, can obtain.
Step S506, according to the random video upset table, issue after random upset.
In embodiment, upset table at random according to described, can be to reduce VR videos.
It should be noted that the specific implementation content of the methods of VR decryption of video described in embodiment is referred in the present invention,
It has been described in detail in VR decryption of video method described above, therefore has no longer illustrated in this duplicate contents.
In the another aspect of the embodiment of the present invention, a kind of VR decryption of video device is given, as shown in fig.6, described
VR decryption of video device 600 includes projection module 601, coding module 602 and upsets module 603.Wherein, projection module 601 will
VR videos are projected in rectangular surfaces, and the VR videos in the rectangular surfaces are divided into multiple grid and numbered by coding module 602.Most
Afterwards, upset module 603 and obtain key M, the numbering in the rectangular surfaces is upset at random, to issue regarding after upsetting at random
Frequently.
It is preferred that using spherical projection method Equirectangular by the spherical projection of VR videos to rectangular surfaces.
As one embodiment, rectangular surfaces can be divided into N number of grid, N=a*b, wherein a are the block number laterally divided, b
For longitudinally divided block number.Meanwhile the grid quantity divided during decryption is identical with the grid quantity divided during encryption.
Further, the array Z that is made up of grid N=a*b is carried out it is random upset swap (Z [i], Z [random (i,
b)]).Wherein, swap is used for exchanging two numbers, and random (i, b) is the random number among i and b, i span for [1,
B], and random number seed is key M.
It should be noted that in the specific implementation content of VR decryption of video device of the present invention, VR described above is regarded
It has been described in detail in frequency decryption method, therefore has no longer illustrated in this duplicate contents.
Above-mentioned embodiment, does not form limiting the scope of the invention.Those skilled in the art should be bright
It is white, depending on design requirement and other factors, various modifications, combination, sub-portfolio and replacement can occur.It is any
Modifications, equivalent substitutions and improvements made within the spirit and principles in the present invention etc., should be included in the scope of the present invention
Within.
Claims (10)
- A kind of 1. VR video encryption methods, it is characterised in that including：VR videos are projected in rectangular surfaces；Grid division is carried out to the VR videos in the rectangular surfaces and is encoded；Upset at random according to the numbering in the rectangular surfaces, to issue the video after upsetting at random.
- 2. according to the method for claim 1, it is characterised in that upset at random according to the numbering in the rectangular surfaces, To issue the video after upsetting at random, including：Upset at random according to the numbering in the rectangular surfaces, the numbering in the rectangular surfaces is upset at random, to obtain Take and upset table at random；According to the random video upset table, issue after random upset.
- 3. method according to claim 1 or 2, it is characterised in that grid is carried out to the VR videos in the rectangular surfaces and drawn Divide and encode, including：Rectangular surfaces are divided into N number of grid, N=a*b, wherein a are the block number laterally divided, and b is longitudinally divided block number.
- 4. according to the method for claim 3, it is characterised in that upset at random according to the numbering in the rectangular surfaces, Including：One integer M is set to key, by using key M as random number seed, upsetting N number of in the numbered rectangular surfaces of tool Grid.
- 5. according to the method described in claim 1-4, it is characterised in that the VR videos are projected into square using spherical projection method On shape face.
- A kind of 6. VR video-encryptions device, it is characterised in that including：Projection module, for VR videos to be projected into rectangular surfaces；Coding module, for carrying out grid division to the VR videos in the rectangular surfaces and encoding；Upset module, for being upset at random according to the numbering in the rectangular surfaces, to issue the video after upsetting at random.
- 7. device according to claim 6, it is characterised in that the module of upsetting is entered according to the numbering in the rectangular surfaces Row is upset at random, to issue the video after upsetting at random, including：Upset at random according to the numbering in the rectangular surfaces, the numbering in the rectangular surfaces is upset at random, to obtain Take and upset table at random；According to the random video upset table, issue after random upset.
- 8. the device according to claim 6 or 7, it is characterised in that the coding module regards to the VR in the rectangular surfaces Frequency carries out grid division and encoded, including：Rectangular surfaces are divided into N number of grid, N=a*b, wherein a are the block number laterally divided, and b is longitudinally divided block number.
- 9. device according to claim 8, it is characterised in that the module of upsetting is entered according to the numbering in the rectangular surfaces Row is upset at random, including：One integer M is set to key, by using key M as random number seed, upsetting N number of in the numbered rectangular surfaces of tool Grid.
- 10. according to the device described in claim 6-9, it is characterised in that projected to the VR videos using spherical projection method In rectangular surfaces.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710748884.2A CN107371041A (en) | 2017-08-28 | 2017-08-28 | A kind of VR video encryption methods and device |
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| CN201710748884.2A CN107371041A (en) | 2017-08-28 | 2017-08-28 | A kind of VR video encryption methods and device |
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| CN101675663A (en) * | 2007-02-14 | 2010-03-17 | 弗廷特风险投资集团 | Fuzzy protection of visual content |
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Application publication date: 20171121 |