CN105654471B - Augmented reality AR system and method applied to internet video live streaming - Google Patents
Augmented reality AR system and method applied to internet video live streaming Download PDFInfo
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- CN105654471B CN105654471B CN201510989267.2A CN201510989267A CN105654471B CN 105654471 B CN105654471 B CN 105654471B CN 201510989267 A CN201510989267 A CN 201510989267A CN 105654471 B CN105654471 B CN 105654471B
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- 230000003190 augmentative effect Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 238000000605 extraction Methods 0.000 claims abstract description 34
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000010030 laminating Methods 0.000 claims abstract description 12
- 230000000007 visual effect Effects 0.000 claims abstract description 10
- 239000000284 extract Substances 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 230000006872 improvement Effects 0.000 description 9
- 230000007613 environmental effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000003708 edge detection Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
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- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10016—Video; Image sequence
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses the augmented reality AR systems for being applied to internet video live streaming, comprising: augmented reality AR unit, camera, database and display unit；Augmented reality AR unit is connected with camera, database and display unit respectively, and augmented reality AR unit includes detection module, extraction module and laminating module；Detection module is for detecting whether original background meets AR processing requirement；Extraction module is connected with detection module, for extracting the foreground target image of video frame；Laminating module is connected with extraction module, is overlapped for that will replace image or video with foreground target image.The present invention can dynamically replace any background, can effectively promote the interest of video, reinforce the visual impact of video；The specified replacement image of user or video, so that it may achieve the purpose that replace video background, it is easy to operate；This method is not high to the performance requirement of computer simultaneously, can realize on PC machine, mobile phone Android system.
Description
Technical field
The present invention relates to video imaging technique fields, more particularly to applied to the augmented reality AR system of internet video live streaming
System and method.
Background technique
Currently, online amusement platform is numerous, main broadcasters' residence can be carried out net cast at home.Due to shooting environmental list
It adjusts, causes program to lack interest, attraction not strong, it is therefore desirable to which the excellent table that one kind technology easy to operate is main broadcaster is provided
Now set off atmosphere by contrast, reinforces visual impact.Mostly use picture superimposing technique greatly at present, picture superimposing technique be two pictures by
It is fused together according to different transparencies, also can change the atmosphere of original picture；But picture superimposing technique bring effect has
Limit, and cannot arbitrarily replace background.
Augmented reality (Augmented Reality, abbreviation AR) is the numerous well-known universities of Abroad in Recent Years and research institution
One of research hotspot；Augmented reality AR technology is emerging technology developed in recent years, core be by virtual content and
The content of necessary being carries out real time fusion, interaction virtual, between reality is formed, to create completely new experience.Virtually
Studio is exactly typical augmented reality system, it has organically been combined the personage of real scene shooting with the virtual scene that computer is drawn
Come, is presented in face of spectators with completely new visual effect.But virtual studio is the system of a set of complexity, expensive, operation
It is cumbersome, and have technical requirements to program making person, while traditional augmented reality AR technology wants the operational performance of computer
Ask very high.
Summary of the invention
Aiming at the shortcomings existing in the above problems, the present invention provides the augmented reality for being applied to internet video live streaming
AR system and method.
To achieve the above object, the present invention provides it is a kind of applied to internet video live streaming augmented reality AR system,
It include: augmented reality AR unit, camera, database and display unit；
The camera is used to acquire original background, and the video frame with foreground target image and original background；
The database is for storing replacement image or video；
The display unit is used to show the processing result of augmented reality AR unit；
The augmented reality AR unit is connected with the camera, database and display unit respectively, the augmented reality
AR unit includes detection module, extraction module and laminating module；
Whether the original background that the detection module is used to detect camera acquisition meets AR processing requirement, when meeting the requirements
When, it is sent into extraction module and extracts signal；
The extraction module is connected with the detection module, for according to the prospect mesh for extracting signal extraction video frame
Logo image；
The laminating module is connected with the extraction module, carries out for that will replace image or video and foreground target image
Superposition.
As a further improvement of the present invention, the augmented reality AR unit further includes amplification/diminution module, described to put
Greatly/reduce module be arranged between the extraction module and the laminating module, for before superposition to the foreground target of extraction
Image zooms in or out.
As a further improvement of the present invention, the detection module includes variance detection module and number of edges detection mould
Block.
As a further improvement of the present invention, when original background does not meet AR processing requirement, detection module is to camera
Send the signal for acquiring original background again.
The invention also discloses a kind of application method of augmented reality AR system applied to internet video live streaming, packets
It includes:
Step 1: acquiring original background and detecting whether the original background meets AR processing requirement, when testing result is
When meeting, then two are entered step；
Step 2: acquisition has the video frame of foreground target image and the original background, and extract the prospect of video frame
Target image；
Step 3: the foreground target image of extraction and replacement background are overlapped, new visual pattern is formed, it is described to replace
Changing background includes: image or video.
As a further improvement of the present invention, the original background is solid background.
As a further improvement of the present invention, the foundation for meeting AR processing requirement is detected whether in the step 1 are as follows: side
Difference detection and number of edges detection；
The formula of the variance detection are as follows:
Wherein: D (X) indicates variance, and X indicates original background image, and E (X) indicates the average value of original background image, xiTable
Show that pixel value, n indicate number of pixels；
The method of the number of edges detection are as follows: number of edges is detected using Sobel operator；
When variance and number of edges are respectively less than the threshold value of its setting, then determine are as follows: original background meets AR processing requirement.
As a further improvement of the present invention, when the testing result in step 1 is not meet, the original back is adjusted
Scape, and repeat step 1.
As a further improvement of the present invention, the method for the foreground target image of video frame is extracted in the step 2 are as follows:
Each distribution of the pixel of video frame and mixed Gauss model GMM are carried out based on mixed Gauss model GMM
Match；
|X-μi|≤λσi
Wherein: X indicates pixel value, μiIndicate the mean value of Gaussian Profile, σiIndicate the variance of Gaussian Profile, λ indicates Gauss point
The threshold value of cloth variance；
When pixel and some Gaussian Profile meet above formula, then the pixel matches with Gaussian Profile, is background dot；It is no
It is then foreground point.
It as a further improvement of the present invention, further include step 4 between the step 2 and step 3；
The step 4 is after zooming in or out the foreground target image of video frame as needed, to be moved into specified
Position.
Compared with prior art, the invention has the benefit that
The present invention provides the augmented reality AR system and methods for being applied to internet video live streaming, including augmented reality AR
Unit, camera, database and display unit；Original background detection is realized by above structure, extraction foreground target image, is replaced
Change background.The present invention solves the problems, such as online amusement platform main broadcaster because shooting environmental is dull, live video lacks attraction, uses
Family can dynamically replace any background, can effectively promote the interest of video, reinforce the visual impact of video；User is specified
Replace image or video, so that it may achieve the purpose that replace video background, it is easy to operate；This method wants the performance of computer simultaneously
It asks not high, can be realized on PC machine, mobile phone Android system.
Detailed description of the invention
Fig. 1 is the frame of the disclosed augmented reality AR system applied to internet video live streaming of an embodiment of the present invention
Figure；
Fig. 2 is the method flow of the disclosed augmented reality AR applied to internet video live streaming of an embodiment of the present invention
Figure；
Fig. 3 is original background figure disclosed in an embodiment of the present invention；
Fig. 4, which is that an embodiment of the present invention is disclosed, replaces background；
Fig. 5 is the disclosed video frame figure for having foreground target image of an embodiment of the present invention；
Fig. 6 is that the disclosed replacement image of an embodiment of the present invention and foreground target image are overlapped the new figure to be formed
Picture.
In figure: 1, augmented reality AR unit；1-1, detection module；1-2, extraction module；1-3, laminating module；1-4, it puts
Greatly/reduce module；2, camera；3, database；4 display units.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The invention discloses a kind of augmented reality AR systems applied to internet video live streaming, comprising: augmented reality AR
Unit, camera, database and display unit；Camera is for acquiring original background, and with foreground target image and original
The video frame of background；Database is for storing replacement image or video；Display unit is used to show the place of augmented reality AR unit
Manage result；Augmented reality AR unit is connected with camera, database and display unit respectively, and augmented reality AR unit includes detection
Module, extraction module and laminating module；Whether the original background that detection module is used to detect camera acquisition, which meets AR processing, is wanted
It asks, when meeting the requirements, is sent into extraction module and extract signal；Extraction module is connected with detection module, for according to extraction
The foreground target image of signal extraction video frame；Laminating module is connected with extraction module, for that will replace image or video with before
Scape target image is overlapped.The invention also discloses a kind of augmented reality AR methods applied to internet video live streaming, adopt
Collection original background simultaneously detects whether original background meets AR processing requirement, when testing result is to meet, then enters in next step；It adopts
Collection has the video frame of foreground target image and original background, and extracts the foreground target image of video frame；By the prospect of extraction
Target image is overlapped with replacement background, forms new visual pattern, replacement background includes: image or video.Solution of the present invention
Online amusement platform main broadcaster determined because of the problem of shooting environmental is dull, live video lacks attraction, user, which can dynamically replace, to be appointed
Meaning background can effectively promote the interest of video, reinforce the visual impact of video；The specified replacement image of user or view
Frequently, so that it may achieve the purpose that replace video background, it is easy to operate；This method is not high to the performance requirement of computer simultaneously, can be with
It is realized on PC machine, mobile phone Android system.
The present invention is described in further detail with reference to the accompanying drawing:
Embodiment 1: as shown in Figure 1, an object of the present disclosure is to provide a kind of increasing applied to internet video live streaming
Strong reality AR system, comprising: augmented reality AR unit 1, camera 2, database 3 and display unit 4；
Camera 2 is used to acquire the original background without target, and acquisition has foreground target image and original background
Video frame, database 3 is used to show the processing of augmented reality AR unit for storing replacement image or video, display unit 4
As a result；Augmented reality AR unit 1 is connected with camera 2, database 3 and display unit 4 respectively.
Augmented reality AR unit 1 includes detection module 1-1, extraction module 1-2, laminating module 1-3 and amplification/diminution module
1-4.Detection module 1-1 is connected with camera 2, and whether the original background for detecting camera acquisition meets AR processing requirement,
When meeting the requirements, is sent into extraction module and extract signal；Detection module 1-1 further comprises variance detection module and edge
Number detection module；Extraction module 1-2 is connected with detection module 1-1, mentions based on mixed Gauss model GMM and according to signal is extracted
Take the foreground target image of video frame；Laminating module 1-3 is connected by amplification/diminution module 1-4 with extraction module 1-2, is used for
Background will be replaced to be overlapped with the foreground target image by zooming in or out, replacement background can be image or video.
Embodiment 2: as shown in figures 2-6, the present invention second be designed to provide it is a kind of applied to internet video live streaming
The application method of augmented reality AR system, comprising:
1., initialization:
Threshold value, the threshold value of number of edges that variance is set in detection module, set Gaussian Profile side in extraction module
The threshold value of difference.
2., camera acquisition without the original background of target, original background is solid background, and solid background is single face
The background (such as blue or white) of color, as shown in figure 3, in the detection module being passed in augmented reality AR unit, and fixation is taken the photograph
As head.
3., detection module detection without the original background image of target whether meet AR processing requirement, using variance and
Number of edges is detected:
The formula of variance detection are as follows:
Wherein: D (X) indicates variance, and X indicates original background image, and E (X) indicates the average value of original background image, xiTable
Show that pixel value, n indicate number of pixels；
The method of edge detection are as follows: number of edges is detected using Sobel operator.Sobel operator is Sobel Operator, is
A kind of important process method of computer vision field, be mainly used for obtain digital picture First-order Gradient, common application and
Physical significance is edge detection.Technically, it is a discrete first difference operator, for calculating brightness of image function
The approximation of First-order Gradient.Any point of image use this operator, it will generate the corresponding gradient vector of point or its
Law vector；
When variance and number of edges are respectively less than the threshold value of its setting, original background meets AR processing requirement, then goes to step
Suddenly 4.；When not meeting AR processing requirement, original background is adjusted, and repeat step 2., 3..
4., under the original background met the requirements, have foreground target image with above-mentioned fixed camera acquisition
With the video frame of original background, as shown in figure 5, in the receiving module being passed in augmented reality AR unit；
Augmented reality AR unit establishes mixed Gauss model GMM to background image；Gaussian modeling is based on pixel sample
The representation method of this statistical information utilizes pixel statistical informations (such as mould such as probability density of great amount of samples value in a long time
Formula quantity, the mean value and standard deviation of each mode) indicate background, then foreground target is carried out using statistics difference (such as 3 σ principles)
Image pixel judgement.The number of mixed Gauss model and the performance of computer are related, and the present invention is characterized using 4 Gauss models
The feature of each pixel in image.
5., extract video frame foreground target image: specific extracting method are as follows:
Each distribution of the pixel of video frame and mixed Gauss model GMM are carried out based on mixed Gauss model GMM
Match；
|X-μi|≤λσi
Wherein: X indicates pixel value, μiIndicate the mean value of Gaussian Profile, σiIndicate the variance of Gaussian Profile, λ indicates Gauss point
The threshold value of cloth variance；
When pixel and some Gaussian Profile meet above formula, then the pixel matches with Gaussian Profile, is background dot；It is no
It is then foreground point.
6., the foreground target image of video frame is zoomed in or out as needed after, be moved into specified position.
7., out of database selection replacement background, replacement background be image or video, as shown in figure 4, being passed to increasing
In the replacement module of strong reality AR unit；In replacement module will replacement image or video and the foreground target image of video frame into
Row superposition, forms new visual pattern, as shown in Figure 6.
The present invention provides the augmented reality AR system and methods for being applied to internet video live streaming, including augmented reality AR
Unit, camera, database and display unit；Original background detection is realized by above structure, extraction foreground target image, is replaced
Change background.The present invention solves the problems, such as online amusement platform main broadcaster because shooting environmental is dull, live video lacks attraction, uses
Family can dynamically replace any background, can effectively promote the interest of video, reinforce the visual impact of video；User is specified
Replace image or video, so that it may achieve the purpose that replace video background, it is easy to operate；This method wants the performance of computer simultaneously
It asks not high, can be realized on PC machine, mobile phone Android system.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of augmented reality AR system applied to internet video live streaming characterized by comprising augmented reality AR is mono-
Member, camera, database and display unit；
The camera is used to acquire original background, and the video frame with foreground target image and original background；
The database is for storing replacement image or video；
The display unit is used to show the processing result of augmented reality AR unit；
The augmented reality AR unit is connected with the camera, database and display unit respectively, and the augmented reality AR is mono-
Member includes detection module, extraction module and laminating module；
Whether the original background that the detection module is used to detect camera acquisition meets AR processing requirement, when meeting the requirements,
It is sent into extraction module and extracts signal；The detection module includes variance detection module and number of edges detection module, the side of working as
When difference and number of edges are respectively less than the threshold value of its setting, original background meets AR processing requirement；
The extraction module is connected with the detection module, for according to the foreground target figure for extracting signal extraction video frame
Picture；
The laminating module is connected with the extraction module, folds for that will replace image or video with foreground target image
Add.
2. the augmented reality AR system applied to internet video live streaming as described in claim 1, which is characterized in that the increasing
Strong reality AR unit further includes amplification/diminution module, and the amplification/diminution module setting is superimposed in the extraction module with described
Between module, for being zoomed in or out before superposition to the foreground target image of extraction.
3. the augmented reality AR system applied to internet video live streaming as described in claim 1, which is characterized in that when original
When background does not meet AR processing requirement, detection module sends the signal for acquiring original background again to camera.
4. a kind of augmented reality AR as claimed in any one of claims 1-3 applied to internet video live streaming
The application method of system characterized by comprising
Step 1: acquiring original background and detecting whether the original background meets AR processing requirement, when testing result is to meet
When, then enter step two；
Step 2: acquisition has the video frame of foreground target image and the original background, and extract the foreground target of video frame
Image；
Step 3: the foreground target image of extraction and replacement background are overlapped, new visual pattern, the replacement back are formed
Scape includes: image or video.
5. the application method applied to the augmented reality AR system of internet video live streaming as claimed in claim 4, feature
It is, the original background is solid background.
6. the application method applied to the augmented reality AR system of internet video live streaming as claimed in claim 4, feature
It is, the foundation for meeting AR processing requirement is detected whether in the step 1 are as follows: variance detection and number of edges detection；
The formula of the variance detection are as follows:
Wherein: D (X) indicates variance, and X indicates original background image, and E (X) indicates the average value of original background image, xiIndicate picture
Element value, n indicate number of pixels；
The method of the number of edges detection are as follows: number of edges is detected using Sobel operator；
When variance and number of edges are respectively less than the threshold value of its setting, then determine are as follows: original background meets AR processing requirement.
7. the application method applied to the augmented reality AR system of internet video live streaming as claimed in claim 4, feature
It is, when the testing result in step 1 is not meet, adjusts the original background, and repeat step 1.
8. the application method applied to the augmented reality AR system of internet video live streaming as claimed in claim 4, feature
It is, the method for the foreground target image of video frame is extracted in the step 2 are as follows:
The pixel of video frame is matched with each distribution of mixed Gauss model GMM based on mixed Gauss model GMM；
|X-μi|≤λσi
Wherein: X indicates pixel value, μiIndicate the mean value of Gaussian Profile, σiIndicate the variance of Gaussian Profile, λ indicates Gaussian Profile side
The threshold value of difference；
When pixel and some Gaussian Profile meet above formula, then the pixel matches with Gaussian Profile, is background dot；Otherwise it is
Foreground point.
9. the application method applied to the augmented reality AR system of internet video live streaming as claimed in claim 4, feature
It is, further includes step 4 between the step 2 and step 3；
The step 4 is after zooming in or out the foreground target image of video frame as needed, to be moved into specified position
It sets.
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