CN107423008A - A kind of multi-cam picture fusion method and scene display device in real time - Google Patents
A kind of multi-cam picture fusion method and scene display device in real time Download PDFInfo
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- CN107423008A CN107423008A CN201710142234.3A CN201710142234A CN107423008A CN 107423008 A CN107423008 A CN 107423008A CN 201710142234 A CN201710142234 A CN 201710142234A CN 107423008 A CN107423008 A CN 107423008A
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- 238000007500 overflow downdraw method Methods 0.000 title claims abstract description 13
- 230000002452 interceptive effect Effects 0.000 claims abstract description 31
- 239000011159 matrix material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 238000003384 imaging method Methods 0.000 claims description 9
- 230000004927 fusion Effects 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 6
- 230000006870 function Effects 0.000 claims description 4
- 241001122767 Theaceae Species 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 241000894007 species Species 0.000 claims description 2
- 238000009827 uniform distribution Methods 0.000 claims 1
- 230000003993 interaction Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 3
- 239000011521 glass Substances 0.000 description 6
- 230000001747 exhibiting effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000010979 ruby Substances 0.000 description 1
- 229910001750 ruby Inorganic materials 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
- G06F3/1446—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display display composed of modules, e.g. video walls
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4038—Image mosaicing, e.g. composing plane images from plane sub-images
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- General Engineering & Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
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Abstract
The invention discloses a kind of multi-cam picture fusion method and scene display device in real time.The present invention projects image by the multiple projectors of host computer control to projection screen, and multiple cameras collection interactive identifications are stuck in the position on projection screen image, and video information is sent into main frame, then Framework computing splicing and output display signal to display screen.On the one hand three-dimensional interactive scene display is realized, the maximization that interaction platform is on the other hand realized by multiple projectors and camera extends, and so as to enhance Consumer's Experience, has good economic and social benefit.It the composite can be widely applied to various scene display systems.
Description
Technical field
The present invention relates to human-computer interaction display technique field, more particularly to multi-cam picture fusion method and using the party
The large scene exhibiting device of method.
Background technology
OpenCV：Open Source Computer Vision Library.OpenCV is one and permitted based on BSD（Open
Source）The cross-platform computer vision library of distribution, it may operate in Linux, Windows, Android and Mac OS operating systems
On.Its lightweight and efficiently --- be made up of a series of C functions and a small amount of C++ classes, at the same provide Python,
The interface of the language such as Ruby, MATLAB, realize many general-purpose algorithms in terms of image procossing and computer vision.
Showpiece is generally placed in cupboard by conventional display cabinet, and clear glass is set at the top of showcase cabinet for watching, in order to
See the stereoeffect of showpiece, the surrounding of some showcase cabinets sets clear glass, and the person of touring needs to turn around around showcase, and people is more
Occasion it is inconvenient, and the showpiece of showcase displaying can only statically be presented on the person of touring at the moment, lack interactivity, expressive force
It is not abundant enough.
In order to solve the shortcomings that lacking interactivity, the U of Chinese patent literature CN 205334919 are disclosed, including display screen, master
Machine, projector, power supply, support, infrared video recorder and two dimensional image identification card.In the prior art, due to the size of interactive table, height
Degree is restricted, it is impossible to covers large-scale interactive table（Such as 1 meter × 2 meters of desktop, or even 10 meters × 10 meters of desktop）.On the one hand because
Single projector can not cover so big region, and on the other hand the view data of single video recorder collection can not also cover so
Big region.In other words, there is the problem of view data gathered can not cover big shooting area in single camera.
The content of the invention
In order to solve the above-mentioned technical problem, it is used to large scene displaying interactive table it is an object of the invention to provide one kind take the photograph more
As the large scene exhibiting device of head picture fusion method and application this method.
The technical solution adopted in the present invention is：
The present invention basic conception be：The present invention projects image, multiple shootings by the multiple projectors of host computer control to projection screen
Head collection interactive identification is stuck in the position on projection screen image, and transfers information to main frame, then main frame output display signal
To display screen.
In order to realize above-mentioned basic conception, the present invention first designs a kind of multi-cam picture fusion method, including step in real time
Suddenly：S1, the region of collected picture is divided into multiple camera watch regions corresponding to multiple cameras, each by camera watch region
Multiple scale invariant features are set；S2, multiple cameras gather the picture of multiple camera watch regions respectively；S3, headed by judging whether
Subframe gathers, and then enters step S4 in this way, otherwise into step S5；S4, corresponding scale invariant feature in image is calculated,
Characteristic matching is carried out to each camera watch region image, homography matrix corresponding with each camera is calculated, into step S5；S5,
Calculated by homography matrix and convert the picture dimension of each camera collection, then spliced multiple camera pictures and export.
Preferably, the scale invariant feature is the scale invariant feature in the lap of adjacent camera watch region picture.
Preferably, the scale invariant feature is to be arranged on the multiple stains or coordinate axiom by camera watch region.
Preferably, the step S4 is specially：Corresponding scale invariant feature in the image of each camera collection is obtained,
Characteristic matching calculating is carried out to scale invariant feature using OpenCV built-in functions, drawn corresponding with each camera watch region picture single
Answer matrix.
Preferably, the multiple camera is 4 cameras, corresponding, and the multiple camera watch region is 4 imaging regions
Domain.
In order to realize the basic conception of the present invention, present invention further proposes a kind of scene based on multimachine shadow casting technique
Exhibiting device, including main frame, multiple projectors, imaging screen, multiple cameras, fusion machine, interactive identification card and display screen；Institute
The output end for stating multiple cameras is connected with the input of main frame respectively, and the input of the multiple projector is with merging machine
Output end connects, and the output end of the input of the fusion machine and main frame connects, the output end of the main frame and display screen it is defeated
Enter end connection；The multiple projector is uniformly set in the plane immediately below projection screen, and the interactive identification card is set
Above projection screen, the multiple camera is uniformly set in the plane immediately below projection screen, the projector and is taken the photograph
As the equal face projection screen of head；
The main frame is used to complete following steps：
S1, the region of collected picture is divided into multiple camera watch regions corresponding to multiple cameras, each by camera watch region
It is middle that multiple scale invariant features are set；
S2, multiple cameras gather the picture of multiple camera watch regions respectively；
S3, determine whether picture collection first, then enter step S4 in this way, otherwise into step S5；
S4, calculate image in corresponding scale invariant feature, to each camera watch region image carry out characteristic matching, calculate with respectively
Homography matrix corresponding to individual camera, into step S5；
S5, calculated by homography matrix and convert the picture dimension of each camera collection, then splice multiple camera pictures；
Position, species, displacement and the rotation angle parameter of interactive identification card in picture are spliced in S6, identification, and according to above-mentioned parameter
The corresponding scene of control display screen display.
Preferably, the imaging screen is to use projection screen made of frosted acrylic board, the interactive identification card
It is arranged on above projection screen., can be or the imaging screen can also be translucent projection screen made of other materials
Transparency glass plate is set on translucent projection screen, and the interactive identification card is arranged on above transparency glass plate.
Preferably, the interactive identification card is used to map the object inside corresponding scene, including the identification of bed identification card, cupboard
Card, floor identification card, tea table identification card or automobile identification card, train identification card, ship identification card, aircraft identification card, artillery are known
Not Ka, Building recognition card, person recognition card.
Preferably, the camera is infrared camera.
Preferably, projector's quantity is 2~8, and the camera quantity is 2~8.
The present invention first beneficial effect be：
The present invention solves the technical problem of multi-cam picture fusion, realized by the picture splicing algorithm of multiple cameras
The conversion splicing of multi-cam collection picture, for the video pictures collection of large scene interactive table, to provide one kind practical
Scheme.
The present invention second beneficial effect be：
The present invention projects image by the multiple projectors of host computer control to projection screen, and multiple camera collection interactive identifications are stuck in throwing
Position on shadow curtain image, and video information is sent into main frame, then Framework computing splicing and output display signal are to showing
Screen.On the one hand three-dimensional interactive scene display is realized, on the other hand realizes interaction platform by multiple projectors and camera
Maximization extension, so as to enhance Consumer's Experience, has good economic and social benefit.
It the composite can be widely applied to various scene display systems.
Brief description of the drawings
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is a kind of schematic flow sheet of embodiment of picture fusion method of the present invention；
Fig. 2 is a kind of structural representation of embodiment of scene display device of the present invention；
Fig. 3 is a kind of electrical block diagram of embodiment of scene display device of the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.
Embodiment 1
As shown in figure 1, the present embodiment is so that 4 camera videos splice as an example, corresponding, the multiple camera watch region is 4 and taken the photograph
As region.
The present invention basic conception be：The present invention projects image by the multiple projectors of host computer control to projection screen, multiple
Camera collection interactive identification is stuck in the position on projection screen image, and transfers information to main frame, then main frame output display
Signal is to display screen.
In order to realize above-mentioned basic conception, the present invention first designs a kind of multi-cam picture fusion method, including step in real time
Suddenly：S1, the region of collected picture is divided into multiple camera watch regions corresponding to multiple cameras, each by camera watch region
Multiple scale invariant features are set；S2, multiple cameras gather the picture of multiple camera watch regions respectively；S3, headed by judging whether
Subframe gathers, and then enters step S4 in this way, otherwise into step S5；S4, corresponding scale invariant feature in image is calculated,
Characteristic matching is carried out to each camera watch region image, homography matrix corresponding with each camera is calculated, into step S5；S5,
Calculated by homography matrix and convert the picture dimension of each camera collection, then spliced multiple camera pictures and export.
In the present embodiment, the scale invariant feature is to be arranged on the multiple stains or coordinate axiom by camera watch region.
By identifying the position that stain or respective coordinates grid are corresponded in camera watch region, angle, change in size, according to OpenCV storehouses letter
It is several that characteristic matching calculating is carried out to scale invariant feature, draw homography matrix corresponding to each camera watch region picture.
In the present embodiment, the first frame input of acquisition camera（Gather first）, a step pretreatment work is first carried out, this step
Work is very time-consuming, but because referential is constant after the completion of being calculated in first time, so It is not necessary to being calculated again, institute
With after pre-processing, the calculating speed of each frame all will be very fast, can a real-time system at last.
The work of pretreatment is exactly to calculate a homography matrix by the scale invariant feature of image, is thrown to image
Shadow converts, and so as to realize the splicing of image, the scale invariant feature of image calculates and characteristic matching will all quote OpenCV
In related built-in function calculated.Corresponding homography matrix is calculated finally by characteristic matching, and result of calculation is preserved down
Come, so that subsequent video frame transformation calculations use.
After pretreatment terminates, image mosaic just is completed into the projective transformation that image is carried out by homography matrix afterwards,
And the result output after most calculating at last.
Embodiment 2
As shown in Figures 2 and 3, the present embodiment controls multiple projectors 2 to project image, multiple shootings to projection screen 3 by main frame 1
First 4 gather 6 position on the image of projection screen 3 of interactive identification card, and transfer information to main frame 1, then the output display of main frame 1
Signal is to display screen 7.
In the present embodiment, including 1,2 projector 2 of main frame, 3,4 infrared cameras 4 of imaging screen, fusion machine 5, interaction
Identification card 6 and display screen 7.
Main frame 1 exports large format vision signal and exported to fusion machine 5, the segmentation figure picture of fusion machine 5 to 2 projectors 2.2
Projector 2 exports stitching image（Two dimensional navigation figure）Project on imaging screen 3.Wherein, the two dimensional navigation figure of projection includes
Stain or coordinate axiom described in embodiment 1.2 projectors 2 are uniformly set in the plane immediately below projection screen 3.2
Individual projector 2 faces projection screen 3.2 projectors are each responsible for the projection of different range, expand the projection of interaction platform
Scope.Different types of interactive identification card 6 can be arranged on the top of projection screen 3 by user（Bed interactive identification card, cupboard interactive identification
Card, floor interactive identification card and tea table interactive identification card can be individually positioned in the relevant position on room two dimensional navigation figure, realize
The furniture of room scene puts displaying）.Wherein, imaging screen can use frosted acrylic board also may be used as projection screen
To use the translucent projection screen of other materials.
Input of the output end of 4 infrared cameras 4 with main frame 1 is connected, output end and the display screen 7 of main frame 1
Input connects.4 cameras 4 are uniformly set in the plane immediately below projection screen 3,44 equal face of camera projections
Curtain 3.4 cameras 4 are each responsible for 4 different zones IMAQs on projection screen 3, and the image collected is passed through into embodiment
Method splicing described in 1, render after output splicing vision signal to display screen 7.
Wherein, in actual use, multiple projectors 2 are used to be projected out splicing jointly two dimensional navigation figure to imaging screen
On 3, one or more interactive identification cards 6 can be placed on the optional position on two dimensional navigation figure by user, and multiple cameras 4 gather
The type and positional information of interactive identification card 6, and after splicing by main frame 1, render processing, shown by display screen 7.
In the present embodiment, it is imaged on screen 3 and is provided with transparency glass plate 8, interactive identification card 6 is arranged on transparency glass plate 8
Top.
The present invention controls multiple projectors 2 to project image to projection screen 3 by main frame 1, and the multiple collection of camera 4 interactions are known
Not Ka 6 position on the image of projection screen 3, and transfer information to main frame 1, then the output display signal of main frame 1 to display screen
7.On the one hand three-dimensional interactive scene display is realized, on the other hand realizes interaction platform by multiple projectors 2 and camera 4
Maximization extension, so as to enhance Consumer's Experience, has good economic and social benefit.
It the composite can be widely applied to various scene display systems.
Above is the preferable implementation to the present invention is illustrated, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to spirit of the invention or replace
Change, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of multi-cam picture fusion method in real time, it is characterised in that including step：
S1, the region of collected picture is divided into multiple camera watch regions corresponding to multiple cameras, each by camera watch region
It is middle that multiple scale invariant features are set；
S2, multiple cameras gather the picture of multiple camera watch regions respectively；
S3, determine whether picture collection first, then enter step S4 in this way, otherwise into step S5；
S4, calculate image in corresponding scale invariant feature, to each camera watch region image carry out characteristic matching, calculate with respectively
Homography matrix corresponding to individual camera, into step S5；
S5, calculated by homography matrix and convert the picture dimension of each camera collection, then splice multiple camera pictures
And export.
A kind of 2. multi-cam picture fusion method in real time according to claim 1, it is characterised in that the Scale invariant
The scale invariant feature being characterized as in the lap of adjacent camera watch region picture.
A kind of 3. multi-cam picture fusion method in real time according to claim 2, it is characterised in that the Scale invariant
It is characterized as being arranged on the multiple stains or coordinate axiom by camera watch region.
A kind of 4. multi-cam picture fusion method in real time according to any one of claims 1 to 3, it is characterised in that institute
Stating step S4 is specially：Corresponding scale invariant feature in the image of each camera collection is obtained, utilizes OpenCV built-in functions
Characteristic matching calculating is carried out to scale invariant feature, draws homography matrix corresponding with each camera watch region picture.
A kind of 5. multi-cam picture fusion method in real time according to any one of claims 1 to 3, it is characterised in that institute
It is 4 cameras to state multiple cameras, corresponding, and the multiple camera watch region is 4 camera watch regions.
6. a kind of scene display device based on multimachine shadow casting technique, it is characterised in that including main frame, multiple projectors, imaging
Screen, multiple cameras, fusion machine, interactive identification card and display screen；The output end of the multiple camera respectively with main frame
Input connects, and the input of the multiple projector connects with merge the output end of machine, the input of the fusion machine and
The output end connection of main frame, the output end of the main frame and the input of display screen connect；The multiple projector is uniformly distributed
It is arranged in the plane immediately below projection screen, the interactive identification card is arranged on above projection screen, and the multiple camera is uniform
Distribution is arranged in the plane immediately below projection screen, the projector and the equal face projection screen of camera；
The main frame is used to complete following steps：
S1, the region of collected picture is divided into multiple camera watch regions corresponding to multiple cameras, each by camera watch region
It is middle that multiple scale invariant features are set；
S2, multiple cameras gather the picture of multiple camera watch regions respectively；
S3, determine whether picture collection first, then enter step S4 in this way, otherwise into step S5；
S4, calculate image in corresponding scale invariant feature, to each camera watch region image carry out characteristic matching, calculate with respectively
Homography matrix corresponding to individual camera, into step S5；
S5, calculated by homography matrix and convert the picture dimension of each camera collection, then splice multiple camera pictures；
Position, species, displacement and the rotation angle parameter of interactive identification card in picture are spliced in S6, identification, and according to above-mentioned parameter
The corresponding scene of control display screen display.
A kind of 7. scene display device based on multimachine shadow casting technique according to claim 6, it is characterised in that it is described into
As screen be using frosted acrylic board made of projection screen, the interactive identification card is arranged on above projection screen.
A kind of 8. scene display device based on multimachine shadow casting technique according to claim 6 or 7, it is characterised in that institute
Interactive identification card is stated to be used to map the object inside corresponding scene, including bed identification card, cupboard identification card, floor identification card, tea
A few identification card or automobile identification cards, train identification card, ship identification card, aircraft identification card, artillery identification card, Building recognition card,
Person recognition card.
9. a kind of scene display device based on multimachine shadow casting technique according to claim 8, it is characterised in that described to take the photograph
As head is infrared camera.
A kind of 10. scene display device based on multimachine shadow casting technique according to claim 6,7 or 9, it is characterised in that
Projector's quantity is 2~8, and the camera quantity is 2~8.
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| CN201710142234.3A CN107423008A (en) | 2017-03-10 | 2017-03-10 | A kind of multi-cam picture fusion method and scene display device in real time |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108093188A (en) * | 2017-12-25 | 2018-05-29 | 北京航空航天大学 | A kind of method of the big visual field video panorama splicing based on hybrid projection transformation model |
| CN109151448A (en) * | 2018-09-17 | 2019-01-04 | 北京唐冠天朗科技开发有限公司 | A kind of generation system and method for stereoscopic picture plane |
| CN110880161A (en) * | 2019-11-21 | 2020-03-13 | 大庆思特传媒科技有限公司 | Depth image splicing and fusing method and system for multi-host multi-depth camera |
| CN111102668A (en) * | 2019-12-30 | 2020-05-05 | 艾奕康设计与咨询(深圳)有限公司 | Cloud box cooling method and device |
| CN112911257A (en) * | 2021-01-25 | 2021-06-04 | 江苏华实广告有限公司 | Projection type interaction method, system and storage medium |
| CN113142798A (en) * | 2021-04-29 | 2021-07-23 | 山东数字人科技股份有限公司 | Three-dimensional scene display system and three-dimensional scene display method thereof |
| CN114040097A (en) * | 2021-10-27 | 2022-02-11 | 苏州金螳螂文化发展股份有限公司 | Large-scene interactive action capturing system based on multi-channel image acquisition and fusion |
| CN114299248A (en) * | 2021-12-27 | 2022-04-08 | 上海风语筑文化科技股份有限公司 | Super-large model projection interactive display system and method |
| CN114913655A (en) * | 2022-06-16 | 2022-08-16 | 慧之安信息技术股份有限公司 | Museum intelligent security method based on edge calculation |
| CN115412672A (en) * | 2022-08-29 | 2022-11-29 | 深圳传音控股股份有限公司 | Shooting display method, intelligent terminal and readable storage medium |
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| CN108093188A (en) * | 2017-12-25 | 2018-05-29 | 北京航空航天大学 | A kind of method of the big visual field video panorama splicing based on hybrid projection transformation model |
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| CN109151448A (en) * | 2018-09-17 | 2019-01-04 | 北京唐冠天朗科技开发有限公司 | A kind of generation system and method for stereoscopic picture plane |
| CN110880161A (en) * | 2019-11-21 | 2020-03-13 | 大庆思特传媒科技有限公司 | Depth image splicing and fusing method and system for multi-host multi-depth camera |
| CN111102668A (en) * | 2019-12-30 | 2020-05-05 | 艾奕康设计与咨询(深圳)有限公司 | Cloud box cooling method and device |
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| CN114040097A (en) * | 2021-10-27 | 2022-02-11 | 苏州金螳螂文化发展股份有限公司 | Large-scene interactive action capturing system based on multi-channel image acquisition and fusion |
| CN114299248A (en) * | 2021-12-27 | 2022-04-08 | 上海风语筑文化科技股份有限公司 | Super-large model projection interactive display system and method |
| CN114913655A (en) * | 2022-06-16 | 2022-08-16 | 慧之安信息技术股份有限公司 | Museum intelligent security method based on edge calculation |
| CN115412672A (en) * | 2022-08-29 | 2022-11-29 | 深圳传音控股股份有限公司 | Shooting display method, intelligent terminal and readable storage medium |
| CN115412672B (en) * | 2022-08-29 | 2024-02-02 | 深圳传音控股股份有限公司 | Shooting display method, intelligent terminal and readable storage medium |
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