CN107959797A - Panorama optical field acquisition device, processing method and computing device based on camera array - Google Patents
Panorama optical field acquisition device, processing method and computing device based on camera array Download PDFInfo
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- CN107959797A CN107959797A CN201711336125.1A CN201711336125A CN107959797A CN 107959797 A CN107959797 A CN 107959797A CN 201711336125 A CN201711336125 A CN 201711336125A CN 107959797 A CN107959797 A CN 107959797A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/698—Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformation in the plane of the image
- G06T3/40—Scaling the whole image or part thereof
- G06T3/4038—Scaling the whole image or part thereof for image mosaicing, i.e. plane images composed of plane sub-images
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
Abstract
The present invention provides a kind of panorama optical field acquisition device, processing method and computing device based on camera array, described device includes a n-shaped cylinder, the identical camera lens of K parameter, the identical camera lens composition matrix camera array of the K attribute are uniformly distributed in each side of the cylinder；Wherein, the value of N registration of scene as captured by the camera lens of correspondence position on the cylinder adjacent surface determines, the length of the matrix camera array is x, and the width of the matrix camera array is y, K=x × y.The problems such as present invention is exposed using the identical camera lens synchronization of parameter, is eliminated virtualization, dislocation caused by the image under different focal employs different splicing parameters.
Description
Technical field
The present invention relates to technical field of image processing, more particularly to a kind of panorama optical field acquisition dress based on camera array
Put, processing method and computing device.
Background technology
The process of optical field imaging includes the collection and the processing of corresponding light field data of light field.Divide from structure, light field
Collection mainly include polyphaser combination and one camera transformation two ways.The former using the Massachusetts Institute of Technology and Stanford University as
Represent, optical field acquisition system has successively been built by the way of polyphaser array, the picture photographed from each camera carries out weight
Structure, calculates four-dimensional light field.One camera optical field acquisition mode introduces optical modulation component in single camera, changes its imaging knot
Structure, so that the four-dimensional light field of camera internal is redistributed on a two-dimentional detector plane.
After being capable of commercial light-field camera and coming out, because that there are traditional shooting means not have is excellent for light field
Gesture, the Panorama Mosaic that researcher just considers to be used widely in imaging in tradition are applied in light field image.
Compared with conventional panoramic image, light field panorama can not only realize the rotation of Three Degree Of Freedom in viewing, additionally it is possible to realize basis
Beholder's needs multi-focusing, and realizes the three-D displacement of low-angle to a certain extent, and feeling of immersion is had more to beholder
Experience.
The existing method for realizing light field image splicing mainly has two kinds, and is all based on existing commercial light-field camera
's：
First, first the pattern matrix of shooting is handled, obtains a series of image under different focals, it is a series of not to this
Spliced with the image under focal length, the panorama light field image obtained after the method processing, which avoids first method, to be produced
Zoom Problem of Failure, but because or employ different splicing parameters to the image under different focal, the problems such as virtualization, dislocation
It can not still avoid；There is researcher to propose to be improved this algorithm, spliced using complete burnt image, then splicing parameter is answered
For the image under different focal, but tackle it is some with radiation direction very relevant factor when (reflection, shade etc.) still
Can defective appearance；
2nd, directly light is handled, the light field image of the fixed angle shot in advance is used for being spliced, by
Fixed in light field image shooting angle, the relation of every light in adjacent two images is needed with regard to that can be obtained by calculation
Very big computing capability and prior accurate calibration, enforcement difficulty are larger.
Therefore, to solve the above-mentioned problems, it is necessary to a kind of panorama optical field acquisition device based on camera array, processing method
And computing device.
The content of the invention
The each side of the present invention is to provide a kind of panorama optical field acquisition device based on camera array, described device bag
A n-shaped cylinder is included, the identical camera lens of K parameter, the K attribute are uniformly distributed in each side of the cylinder
Identical camera lens composition matrix camera array；
Wherein, the value of N registration of scene as captured by the camera lens of correspondence position on the cylinder adjacent surface determines, institute
The length for stating matrix camera array is x, and the width of the matrix camera array is y, K=x × y.
Preferably, when the scene on the cylinder adjacent surface captured by the camera lens of correspondence position just overlaps, the cylinder
Parameter N be minimized.
The present invention another invention be to provide a kind of all-optical field processing method, the described method includes：
The identical camera lens of the K parameter synchronously exposes, and obtains K × N number of picture；
The picture that the camera lens of correspondence position in the shape cylinder different faces of N sides is shot carries out panoramic pictures splicing, and generation K is complete
Scape array of figure；
The K panorama array of figure for being combined into generation regards a circulation as in the horizontal direction, carries out having edge treated
Refocusing calculates.
Preferably, the K panorama array of figure generates as follows：
Panoramic mosaic is carried out to the first group picture piece according to stitching algorithm and generates the first Zhang Quanjing figure, and calculates generation described the
The template parameter of one Zhang Quanjing figure；
Remaining K-1 group pictures piece is used into the template parameter, passes sequentially through stitching algorithm splicing generation K-1 Zhang Quanjings
Figure；
By the first Zhang Quanjing figure of generation and the K-1 Zhang Quanjings image array, K panorama array of figure is generated.
Preferably, the template parameter can be multiplexed for each relative position of lens of each group picture piece of shooting when constant
Parameter sets.
Preferably, when shooting stationary body, the identical camera lens of the K parameter synchronously exposes, and obtains K × N number of picture.
Preferably, when clapping dynamic object, the identical camera lens of the K parameter synchronously exposes, and obtains K × N number of picture.
Another aspect of the invention is to provide a kind of computing device suitable for all-optical field processing method, the calculating
Equipment stores a plurality of instruction, loads and performs：
Control the identical camera lens of K parameter of panorama optical field acquisition device synchronously to expose, obtain K × N number of picture；
The picture that the camera lens of correspondence position in the shape cylinder different faces of N sides is shot carries out panoramic pictures splicing, and generation K is complete
Scape array of figure；
The K panorama array of figure for being combined into generation regards a circulation as in the horizontal direction, carries out having edge treated
Refocusing calculates.
Preferably, the K panorama array of figure generates as follows：
Panoramic mosaic is carried out to the first group picture piece according to stitching algorithm and generates the first Zhang Quanjing figure, and calculates generation described the
The template parameter of one Zhang Quanjing figure；
Remaining K-1 group pictures piece is used into the template parameter, passes sequentially through stitching algorithm splicing generation K-1 Zhang Quanjings
Figure；
By the first Zhang Quanjing figure of generation and the K-1 Zhang Quanjings image array, K panorama array of figure is generated.
Preferably, the template parameter can be multiplexed for each relative position of lens of each group picture piece of shooting when constant
Parameter sets.
Panorama optical field acquisition device, processing method and computing device provided by the invention based on camera array use parameter
Identical camera lens synchronously exposes, and the camera lens packet to relevant position is spliced, and first group of panorama sketch is calculated
Template parameter is used for other group of Panoramagram montage, eliminates caused by the image under different focal employs different splicing parameters
The problems such as virtualization, dislocation.
Panorama optical field acquisition device, processing method and computing device provided by the invention, can successfully manage and light side
The defects of being caused when occurring to very relevant factor.
Panorama optical field acquisition device, processing method and computing device provided by the invention reduce calculation amount and require to reduce,
Without being calibrated in advance to camera lens, the enforcement difficulty of panorama light field reduction is reduced.
It should be appreciated that foregoing description substantially and follow-up description in detail are exemplary illustration and explanation, should not
As the limitation to the claimed content of the present invention.
Brief description of the drawings
With reference to the attached drawing enclosed, the present invention more purpose, function and advantages will pass through the as follows of embodiment of the present invention
Description is illustrated, wherein：
Fig. 1 diagrammatically illustrates the structure diagram of the panorama optical field acquisition device of the invention based on camera array；
Fig. 2 shows the side number of n-shaped cylinder of the present invention and the relation schematic diagram of camera lens photographed scene；
Fig. 3 shows that the identical camera lens of parameter of the present invention synchronously exposes the schematic diagram for obtaining picture；
Fig. 4 shows the schematic diagram of present invention generation panorama array of figure array of figure；
Fig. 5 shows the schematic diagram that panorama array of figure refocusing of the present invention calculates.
Embodiment
By reference to one exemplary embodiment, the purpose of the present invention and function and the side for being used for realization these purposes and function
Method will be illustrated.However, the present invention is not limited to one exemplary embodiment as disclosed below；Can by multi-form come
It is realized.The essence of specification is only to aid in the detail of the various equivalent modifications Integrated Understanding present invention.
Hereinafter, the embodiment of the present invention will be described with reference to the drawings, relevant technical terms should be people in the art
Known to member.In the accompanying drawings, identical reference numeral represents same or similar component, or same or like step,
Unless otherwise indicated.Present disclosure is illustrated below by specific embodiment.The present invention is based on camera as shown in Figure 1
The structure diagram of the panorama optical field acquisition device of array, a kind of panorama optical field acquisition dress based on camera array in embodiment
Put, including a n-shaped cylinder 100, it is uniformly distributed K parameter phase in each side of regular polygon column scapus body 100
With camera lens 101, the identical camera lens of K attribute forms matrix camera array, specifically in the present embodiment each camera lens screen
Signal VnkRepresent.
According to the present invention, the value of the side number N of n-shaped cylinder 100 by correspondence position on cylinder adjacent surface camera lens institute
The registration of photographed scene determines that the side number of n-shaped cylinder of the present invention as shown in Figure 2 is illustrated with the relation of camera lens photographed scene
Figure, exemplary by taking positive hexagonal column as an example in the present embodiment, the adjacent face in cylinder a faces is b faces and c faces, a faces marginal position
Camera lens 101a and b faces marginal position camera lens 101b position correspondences, while the camera lens 101a of a faces marginal position and c faces edge
The camera lens 101c position correspondences of position.The angle beta of the photographed scene of all camera lenses is identical, the mirror of correspondence position on cylinder adjacent surface
The registration of scene determines the side number N of n-shaped cylinder, according to the present invention, the mirror of a faces marginal position in embodiment captured by head
Head 101a needs to overlap with the photographed scene of the camera lens 101b of b faces marginal position, camera lens 101a and the c faces side of a faces marginal position
The photographed scene of the camera lens 101c of edge position needs to overlap.
When scene on cylinder adjacent surface of the present invention captured by the camera lens of correspondence position just overlaps, the cylinder
Parameter N is minimized.The photographed scene of the camera lens 101a of a faces marginal position and the camera lens 101b of b faces marginal position in embodiment
Just overlap, the camera lens 101a of a faces marginal position is just overlapped with the photographed scene of the camera lens 101c of c faces marginal position, then positive N
It is minimum value in the while number N of shape cylinder.It is exemplary for positive hexagonal column in this implementation.
It should be understood that above-mentioned is exemplary explanation, it should be understood by those skilled in the art that being not intended to and above-mentioned implementation
Example, should all overlap for the photographed scene of all camera lenses of the position correspondence on adjacent surface.
The length of matrix camera array in the present invention on each side of n-shaped cylinder is x, the matrix camera
The width of array is y, K=x × y, and the screen signal of each camera lens is Vnk。
Picture is gathered using the panorama optical field acquisition device provided by the present invention based on camera array, to the picture of collection
Handled by all-optical field processing method, all-optical field processing method includes in specific embodiment：
The identical camera lens of K parameter synchronously exposes, and obtains K × N number of picture.When shooting stationary body, the K parameter
Identical camera lens synchronously exposes, and obtains K × N number of picture.
When shooting dynamic object, the identical camera lens of the K parameter synchronously exposes, and obtains K × N number of picture.
The picture that the camera lens of correspondence position in the shape cylinder different faces of N sides is shot carries out panoramic pictures splicing, and generation K is complete
Scape array of figure.
In embodiment, K panorama array of figure generates as follows：
Panoramic mosaic is carried out to the first group picture piece according to stitching algorithm and generates the first Zhang Quanjing figure, and calculates generation described the
The template parameter of one Zhang Quanjing figure.Synchronously exposure obtains the schematic diagram of picture to the identical camera lens of parameter as shown in Figure 3, in embodiment
The picture of first camera lens exposure shooting in first face of n-shaped cylinder is V11... ..., first of n-shaped cylinder
The picture of the lost scene exposure shooting in face is V1k。
And so on, the picture of first camera lens exposure shooting in last face of positive n-shaped cylinder is
VN1... ..., the picture of the lost scene exposure shooting in last face of n-shaped cylinder is VNk。
Corresponding first camera lens in position obtains the first Zhang Quanjing figure, specifically, first by stitching algorithm on all faces
Zhang Quanjing figure is calculated as follows：
P1(δ)=Stitch1(V11, V21..., VN1)
Wherein, P1(δ) is the first Zhang Quanjing figure, and Stitch is splicing function, and δ is template parameter.Template parameter refers to clap
Take the photograph each group picture piece each relative position of lens it is constant when the parameter sets that can be multiplexed, in follow-up panorama picture formation,
Directly use the parameterized template.
Remaining K-1 group pictures piece is used into template parameter δ, passes sequentially through stitching algorithm splicing generation K-1 Zhang Quanjing figures.
The picture of all camera lenses exposure shooting in second face of n-shaped cylinder is V in embodiment21, V22…
V2k... ..., the picture of all camera lenses exposure shooting in last face of n-shaped cylinder is VN1, VN2…VNk.Pass sequentially through
Stitching algorithm generates K-1 Zhang Quanjing figures, and specifically, K-1 Zhang Quanjing figures are calculated as follows：
P2(δ)=Stitch2(V12, V22..., VN2) ... ..., PK(δ)=StitchK(V1K, V2K..., VNK)。
P2(δ) is the second Zhang Quanjing figure ... ..., PK(δ) is K Zhang Quanjing figures.
The selection for stitching algorithm is not specifically limited in the above-described embodiments, and embodiment is exemplary illustration,
Those skilled in the art can select more preferably stitching algorithm according to specific implementation situation in some embodiments.
The schematic diagram of present invention generation panorama array of figure array of figure as shown in Figure 4, by the first Zhang Quanjing figure of generation and institute
K-1 Zhang Quanjing image arrays are stated, generate K panorama array of figure.Collectively generated in embodiment be made of K=x × y panorama sketch it is complete
Scape image array, the length of panorama image array is x, width y.
The schematic diagram that panorama array of figure refocusing of the present invention calculates as shown in Figure 5, K panorama array of figure for being combined into generation exist
Horizontal direction regards a circulation as, have the refocusing of edge treated to calculate, and carries out generation panoramic picture by calculating
Display.In certain embodiments the Three-dimensional Display of edge treated can be used to calculate.
The computing device used in the present embodiment for all-optical field processing method stores a plurality of instruction, using computing device plus
Carry and perform the instruction of storage：
The identical camera lens of K parameter synchronously exposes, and obtains K × N number of picture.When shooting stationary body, the K parameter
Identical camera lens synchronously exposes, and obtains K × N number of picture.
When shooting dynamic object, the identical camera lens of the K parameter synchronously exposes, and obtains K × N number of picture.
The picture that the camera lens of correspondence position in the shape cylinder different faces of N sides is shot carries out panoramic pictures splicing, and generation K is complete
Scape array of figure.K panorama array of figure generates as follows：
Panoramic mosaic is carried out to the first group picture piece according to stitching algorithm and generates the first Zhang Quanjing figure, and calculates generation described the
The template parameter of one Zhang Quanjing figure.The picture of first camera lens exposure shooting in first face of n-shaped cylinder in embodiment
For V11... ..., the picture of the lost scene exposure shooting in first face of n-shaped cylinder is V1k。
And so on, the picture of first camera lens exposure shooting in last face of positive n-shaped cylinder is
VN1... ..., the picture of the lost scene exposure shooting in last face of n-shaped cylinder is VNk。
Corresponding first camera lens in position obtains the first Zhang Quanjing figure, specifically, first by stitching algorithm on all faces
Zhang Quanjing figure is calculated as follows：
P1(δ)=Stitch1(V11, V21..., VN1)
Wherein, P1(δ) is the first Zhang Quanjing figure, and Stitch is splicing function, and δ is template parameter.Template parameter refers to clap
Take the photograph each group picture piece each relative position of lens it is constant when the parameter sets that can be multiplexed, in follow-up panorama picture formation,
Directly use the parameterized template.
Remaining K-1 group pictures piece is used into template parameter δ, passes sequentially through stitching algorithm splicing generation K-1 Zhang Quanjing figures.
The picture of all camera lenses exposure shooting in second face of n-shaped cylinder is V in embodiment21, V22…
V2k... ..., the picture of all camera lenses exposure shooting in last face of n-shaped cylinder is VN1, VN2…VNk.Pass sequentially through
Stitching algorithm generates K-1 Zhang Quanjing figures, and specifically, K-1 Zhang Quanjing figures are calculated as follows：
P2(δ)=Stitch2(V12, V22..., VN2) ... ..., PK(δ)=StitchK(V1K, V2K..., VNK)。
P2(δ) is the second Zhang Quanjing figure ... ..., PK(δ) is K Zhang Quanjing figures.
The selection for stitching algorithm is not specifically limited in the above-described embodiments, and embodiment is exemplary illustration,
Those skilled in the art can select more preferably stitching algorithm according to specific implementation situation in some embodiments.
By the first Zhang Quanjing figure of generation and the K-1 Zhang Quanjings image array, K panorama array of figure is generated.In embodiment
The panorama image array being made of K=x × y panorama sketch is collectively generated, the length of panorama image array is x, width y.It is combined into life
Into K panorama array of figure regard a circulation as in the horizontal direction, have the refocusing of edge treated to calculate, by calculating
Generation panoramic picture is shown.
Panorama optical field acquisition device, processing method and computing device provided by the invention based on camera array use parameter
Identical camera lens synchronously exposes, and the camera lens packet to relevant position is spliced, and first group of panorama sketch is calculated
Template parameter is used for other group of Panoramagram montage, eliminates caused by the image under different focal employs different splicing parameters
The problems such as virtualization, dislocation.
Panorama optical field acquisition device, processing method and computing device provided by the invention, can successfully manage and light side
The defects of being caused when occurring to very relevant factor.
Panorama optical field acquisition device, processing method and computing device provided by the invention reduce calculation amount and require to reduce,
Without being calibrated in advance to camera lens, the enforcement difficulty of panorama light field reduction is reduced.
With reference to the explanation of the invention disclosed here and practice, the other embodiment of the present invention is for those skilled in the art
It all will be readily apparent and understand.Illustrate and embodiment is regarded only as being exemplary, true scope of the invention and purport are equal
It is defined in the claims.
Claims (10)
1. a kind of panorama optical field acquisition device based on camera array, it is characterised in that described device includes a n-shaped column
Body, the identical camera lens of K parameter, the identical camera lens composition of the K attribute are uniformly distributed in each side of the cylinder
Matrix camera array；
Wherein, the value of N registration of scene as captured by the camera lens of correspondence position on the cylinder adjacent surface determines, the square
The length of array camera array is x, and the width of the matrix camera array is y, K=x × y.
2. device according to claim 1, it is characterised in that on the cylinder adjacent surface captured by the camera lens of correspondence position
Scene when just overlapping, the parameter N of the cylinder is minimized.
A kind of 3. all-optical field processing method gathered using 1 or 2 described device of claim, it is characterised in that the method bag
Include：
The identical camera lens of the K parameter synchronously exposes, and obtains K × N number of picture；
The picture that the camera lens of correspondence position in the shape cylinder different faces of N sides is shot carries out panoramic pictures splicing, generates K panorama battle array
Row figure；
The K panorama array of figure for being combined into generation regards a circulation as in the horizontal direction, carries out the reunion with edge treated
Jiao calculates.
4. according to the method described in claim 3, it is characterized in that, the K panorama array of figure generates as follows：
Panoramic mosaic is carried out to the first group picture piece according to stitching algorithm and generates the first Zhang Quanjing figure, and calculates described first of generation
The template parameter of panorama sketch；
Remaining K-1 group pictures piece is used into the template parameter, passes sequentially through stitching algorithm splicing generation K-1 Zhang Quanjing figures；
By the first Zhang Quanjing figure of generation and the K-1 Zhang Quanjings image array, K panorama array of figure is generated.
5. according to the method described in claim 4, it is characterized in that, the template parameter is each mirror for shooting each group picture piece
The parameter sets that head relative position can be multiplexed when constant.
6. according to the method described in claim 3, it is characterized in that, when shooting stationary body, the identical mirror of the K parameter
The synchronous exposure of head, obtains K × N number of picture.
7. according to the method described in claim 3, it is characterized in that, when shooting dynamic object, the identical mirror of the K parameter
The synchronous exposure of head, obtains K × N number of picture.
8. a kind of computing device suitable for claim 3 to 7 to any claim the method, it is characterised in that described
Computing device stores a plurality of instruction, loads and performs：
Control the identical camera lens of K parameter of panorama optical field acquisition device synchronously to expose, obtain K × N number of picture；
The picture that the camera lens of correspondence position in the shape cylinder different faces of N sides is shot carries out panoramic pictures splicing, generates K panorama battle array
Row figure；
The K panorama array of figure for being combined into generation regards a circulation as in the horizontal direction, carries out the reunion with edge treated
Jiao calculates.
9. computing device according to claim 8, it is characterised in that the K panorama array of figure is given birth to as follows
Into：
Panoramic mosaic is carried out to the first group picture piece according to stitching algorithm and generates the first Zhang Quanjing figure, and calculates described first of generation
The template parameter of panorama sketch；
Remaining K-1 group pictures piece is used into the template parameter, passes sequentially through stitching algorithm splicing generation K-1 Zhang Quanjing figures；
By the first Zhang Quanjing figure of generation and the K-1 Zhang Quanjings image array, K panorama array of figure is generated.
10. computing device according to claim 8, it is characterised in that the template parameter is each group picture piece of shooting
The parameter sets that each relative position of lens can be multiplexed when constant.
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| CN110082360A (en) * | 2019-05-17 | 2019-08-02 | 中国科学院光电技术研究所 | A kind of sequence optical element surface on-line detection device of defects and method based on array camera |
| CN110505368A (en) * | 2019-08-29 | 2019-11-26 | 深圳市圆周率软件科技有限责任公司 | A kind of more camera lens time for exposure synchronization systems of test panorama camera |
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| CN108156395A (en) * | 2017-12-13 | 2018-06-12 | 中国电子科技集团公司电子科学研究院 | Panorama optical field acquisition device, processing method and computing device based on camera array |
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| CN110082360A (en) * | 2019-05-17 | 2019-08-02 | 中国科学院光电技术研究所 | A kind of sequence optical element surface on-line detection device of defects and method based on array camera |
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| CN110505368B (en) * | 2019-08-29 | 2023-06-06 | 圆周率科技(常州)有限公司 | Multi-lens exposure time synchronization system for panoramic camera testing |
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