CN107547789A - The method of video capturing device and its photography composition - Google Patents
The method of video capturing device and its photography composition Download PDFInfo
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- CN107547789A CN107547789A CN201610471944.6A CN201610471944A CN107547789A CN 107547789 A CN107547789 A CN 107547789A CN 201610471944 A CN201610471944 A CN 201610471944A CN 107547789 A CN107547789 A CN 107547789A
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Abstract
The present invention proposes a kind of method of video capturing device and its photography composition, and the method is applied to the video capturing device with the first camera lens and depth sense device, and comprises the following steps.First, the preview screen of photographed scene is obtained using the first camera lens, and the depth information of photographed scene is obtained using depth sense device.Then, according to depth information, scene analysis is carried out for preview screen, to produce scene analysis result.Afterwards, according to scene analysis result and corresponding photography composition rule, judge whether preview screen meets photography composition requirement.If so, utilize the first lens shooting preview screen；If it is not, the then photography composition rule according to corresponding to scene analysis result, there is provided meet the composition suggestion of photographed scene.The present invention, which can provide more accurately to find a view, meets the photo of photographic esthetics value to allow user to shoot.
Description
Technical field
The present invention relates to a kind of technology of image capturing, more particularly to a kind of video capturing device and its photography
The method of composition.
Background technology
With the development of science and technology, miscellaneous intelligent image acquisition device, for example, it is tablet personal computer, individual
People digitizes assistant, intelligent mobile phone etc., it has also become the indispensable instrument of modern.Wherein, high-order
The camera lens that the intelligent image acquisition device of money is carried are not with traditional consumption type camera in phase
Under, it might even be possible to replace, a small number of high-order moneys can more reach single anti-close to numeral by twin-lens
Image quality or the function of shooting 3-dimensional image.
In general, the composition of a photo is to judge whether photo there is aesthstic (aesthetics) to be worth
One of important evidence.For the composition shot, user must account for the species of photographed scene with
And the speciality such as the finding a view of each shot element, angle, orientation, light, color, arranged with combining
Shot again afterwards, therefore user need to possess composition skill and photographic knowledge, meet U.S. to shoot
Photo.Furthermore generally directed to the composition of photographed scene, the information of two-dimensional picture is mainly based upon,
And the information of scene three-dimensional structure is not contemplated, it is unable to reach accurately composition.
The content of the invention
In view of this, the present invention proposes a kind of method of video capturing device and its photography composition, and it can be carried
Meet the photo of photographic esthetics value to allow user to shoot for more accurately finding a view.
In one embodiment of this invention, the method for above-mentioned photography composition be applied to the first camera lens and
The video capturing device of depth sense device, and comprise the following steps.First, obtained using the first camera lens
The preview screen of photographed scene, and utilize the depth information of depth sense device acquirement photographed scene.Then,
According to depth information, scene analysis is carried out for preview screen, to produce scene analysis result.Afterwards,
According to scene analysis result and corresponding photography composition rule, judge whether preview screen meets photography structure
Figure requires.If so, utilize the first lens shooting preview screen；If it is not, then according to scene analysis result institute
Corresponding photography composition rule, there is provided meet the composition suggestion of photographed scene.
In one embodiment of this invention, above-mentioned video capturing device include the first camera lens, depth sense device,
Memory and processor, wherein processor couple the first camera lens, depth sense device and memory.
Memory is storing multiple photography composition rules.Processor obtains photographed scene to the first camera lens of utilization
Preview screen, and obtain using depth sense device the depth information of photographed scene, believe further according to depth
Breath, scene analysis is carried out for preview screen, to produce scene analysis result, and according to scene analysis
As a result and corresponding photography composition rule, judge whether preview screen meets photography composition requirement.If so,
Then processor will utilize the first lens shooting preview screen；If it is not, then processor will be according to scene analysis knot
Photography composition rule corresponding to fruit, there is provided meet the composition suggestion of photographed scene.
Based on the method for above-mentioned, proposed by the invention video capturing device and its photography composition, it is utilized
The preview screen and depth information of photographed scene, the scene analysis of three dimensions is carried out for photographed scene,
And photography composition rule is inserted in, to judge whether the composition of preview screen meets photography composition requirement, according to
To determine whether shooting preview picture.The present invention, which can provide, more accurately to find a view to allow user to shoot symbol
Close the photo of photographic esthetics value.
For features described above of the invention and advantage can be become apparent, special embodiment below, and coordinate
Accompanying drawing is described in detail below.
Brief description of the drawings
Fig. 1 is the block diagram of the video capturing device according to one embodiment of the invention；
Fig. 2 is the photography composition method of the video capturing device according to one embodiment of the invention
Flow chart；
Fig. 3 is the photography composition method of the video capturing device according to one embodiment of the invention
Function box flow chart.
Reference：
100：Video capturing device
110：First camera lens
120：Depth sense device
130：Memory
140：Processor
S202~S212, S302~S314：The method flow of photography composition
R：Photography composition rule
Embodiment
Next the section Example of the present invention will coordinate accompanying drawing to be described in detail, following description is drawn
Component symbol, same or analogous element is will be regarded as when identical component symbol occur in different accompanying drawings.
These embodiments are the part of the present invention, do not disclose all embodiments of the invention.
Fig. 1 is the block diagram of the video capturing device according to one embodiment of the invention, but this is only
For convenience of explanation, it is not intended to limit the invention.Fig. 1 first first introduces all of video capturing device
Component and configuration relation, detailed functions will coordinate Fig. 2 to disclose in the lump.
Fig. 1 is refer to, video capturing device 100 includes the first camera lens 110, depth sense device 120, deposited
Reservoir 130 and processor 140, wherein processor 140 couple the first camera lens 110, depth sense device
120 and memory 130.In the present embodiment, video capturing device 100 is, for example, digital camera, list
Anti-phase machine, digital camera or other have the intelligent mobile phone of image capturing function, tablet personal computer,
The electronic installations such as personal digital assistant, the present invention are not limited.
First camera lens 110 is pick-up lens, its to obtain the image of photographed scene and including lens with
And photo-sensitive cell.Photo-sensitive cell produces shadow respectively to sense the light intensity into lens respectively
Picture.Photo-sensitive cell may, for example, be charge coupled cell (charge coupled device, CCD), mutually
Benefit property matal-oxide semiconductor (complementary metal-oxide semiconductor, CMOS) member
Part or other elements, the present invention do not limit herein.
To obtain the depth information of photographed scene, it can be divided into active depth sense device 120
(active) depth sense device and passive type (passive) depth sense device.Active depth sense device
Signal can be used as by light source, ultrasonic, laser etc. is actively sent, calculate the depth information of photographed scene.
On the other hand, passive type depth sense device may, for example, be another pick-up lens, and with the first camera lens
110 obtain two images of photographed scene with different visual angles simultaneously, are calculated using the parallax of two images
The depth information of photographed scene.
Memory 130 to store image and data, its may, for example, be the fixed of any pattern or
Packaged type random access memory (random access memory, RAM), read-only storage
(read-only memory, ROM), flash memory (flash memory), hard disk or other classes
The combination of like device or these devices.
For processor 140 to control the work between the element of video capturing device 100, it can be such as
It is CPU (central processing unit, CPU), or other programmables is general
The microprocessor of purposes or specific use (microprocessor), digital signal processor (digital signal
Processor, DSP), programmable controller, ASIC (Application Specific
Integrated Circuits, ASIC), programmable logic device (programmable logic device,
PLD) or other similar devices or these devices combination.
Each element of i.e. collocation Fig. 1 video capturing device 100 enumerates embodiment below, to illustrate image
Acquisition device 100 performs the detailed step of photography composition method.
Fig. 2 is the photography composition side of the video capturing device 100 according to one embodiment of the invention
The flow chart of method.
Referring to Fig. 1 and Fig. 2, when 100 photographed scene to be directed to of video capturing device is clapped
When taking the photograph, processor 140 will obtain the preview screen (step S202) of photographed scene using the first camera lens 110,
And the depth information (step S204) of photographed scene is obtained using depth sense device 120.Depth in this
Degree information can be by the depth quantization of photographed scene into the grey decision-making (0 to 255) of 8 it is shown go out
The nearer object of range image acquisition device 100 among depth map, wherein photographed scene, its grey decision-making are got over
Greatly.In addition, in another embodiment, the depth information of photographed scene directly can also carry out table with depth value
Show, the present invention does not limit herein.
Analyzed compared to general photography composition only for the two-dimensional picture of photographed scene and ignore its three-dimensional
Structural information, processor 140 obtain photographed scene preview screen and depth information after, will enter
One step according to depth information, scene analysis is carried out for preview screen, to produce scene analysis result (step
Rapid S206).Specifically, processor 140 can be first according to the depth information of photographed scene come to preview
Picture carries out scene classification.Scene classification in this can be general common Outdoor Scene, indoor scene,
Feature scene etc..
For example, when processor 140 judge in preview screen positioned at high depth section pixel occupy it is whole
(that is, the region area positioned at high depth section is more than or equal to default distant view when opening the certain proportion of picture
Area), then this photographed scene can be classified as Outdoor Scene by processor 140, to be set as scene analysis
As a result.For the viewpoint of depth distance, high depth section is then that depth distance is higher than high depth range gate
The section of threshold value (such as 2 meters).For the viewpoint of grey decision-making, high depth section is then grey decision-making
Less than the section of low GTG threshold value (such as 85).
On the other hand, when processor 140 judge in preview screen positioned at low depth section pixel occupy it is whole
(that is, the region area positioned at low depth section is more than or equal to default feature when opening the certain proportion of picture
Area), then this photographed scene can be classified as feature scene by processor 140, to be set as scene analysis
As a result.For the viewpoint of depth distance, low depth section is then that depth distance is less than low depth range gate
The section of threshold value (such as 30 centimeters).For the viewpoint of grey decision-making, low depth section is then grey decision-making
Higher than the section of high gray threshold value (such as 170).
When processor 140 judges that the pixel in preview screen positioned at middle depth intervals occupies the one of whole picture
During certainty ratio (that is, the region area positioned at middle depth intervals is more than or equal to default close shot area), then
This photographed scene can be classified as and show interior scene by processor 140, to be set as scene analysis result.With depth
Spend for the viewpoint of distance, middle depth intervals are then depth distances between low depth range gate threshold value and profundity
The section spent between range gate threshold value.For the viewpoint of grey decision-making, low depth section is then that grey decision-making is situated between
Section between low GTG threshold value and high gray threshold value.
In addition, when processor 140 judges that preview screen has more than two different depth value sections,
Then this photographed scene can be set as comprising at least the scene of prospect and background by processor 140, with as
Scene analysis result.For example, when preview screen has two different depth value sections and two all
When occupying the certain proportion of whole picture, this photographed scene then has prospect and background.Work as preview screen
When all occupying the certain proportion of whole picture with three different depth value sections and three, this shooting field
Scape then has prospect, middle scape and background.In addition, processor 140 can also be according to multiple different depths
It is worth the region in section, judges the three-dimensional scene structure of photographed scene.
Processor 140 is after the scene of preview screen has been analyzed, it will according to scene analysis result and right
The photography composition rule answered, judges whether preview screen meets photography composition requirement (step S208), according to
To determine whether to utilize the shooting preview picture of the first camera lens 110.Here, memory 130 can store in advance
Shot subject is associated with configuration spatially or multiple photography composition rules of chroma-luminance information, with
Processor 140 is provided to carry out the judgement of photography composition requirement.This little photography composition rule is photography pin
The composition model (template) that different scenes are commonly used.Processor 140 is obtaining the analysis of photographed scene
As a result after, it will determine that it whether in accordance with corresponding composition model.
For example, in photography, if the body region of a photo falls on golden ratio region
(that is, meeting golden proportional rule), generally with strict proportionality, artistry, concordance, accumulate
Hide abundant aesthetic values.Therefore, above-mentioned composition model can include image trichotomy composition, gold
The models based on golden ratio such as ratio composition, well word composition.Thus, it is supposed that processor 140 judges to clap
Whether when taking the photograph scene has prospect and background, will determine that may be located at gold ratio for the prospect of shot subject
In well word composition focus in example rule.If so, then processor 140 can determine that this preview screen meets and take the photograph
The requirement of shadow composition.Assume that processor 140 judges that photographed scene is with prospect, middle scape and background again
During Outdoor Scene, it can further judge that the image three whether this three scapes meet in golden proportional rule divides
Method composition.If so, then processor 140 can determine that this preview screen meets photography composition requirement.
It is worth noting that, the present invention is not limited to the composition model based on golden ratio.In other realities
Apply in example, above-mentioned composition model more can be triangular figure, radial composition, horizontal composition, hang down
The conventional modes of composition of photography such as straight composition, perspective shape composition, oblique angle composition, and processor 140 can
Photography composition according to corresponding to whether scene analysis result judgement preview screen meets in general photography it
It is required that.
For example, if processor 140 judge photographed scene for Outdoor Scene when and object positioned at remote
Jing Shi, will determine that whether this preview screen meets composition rule of the landscape according to (landscape).At one
Meet in the landscape photograph of photography composition aesthetics, horizon needs the horizontal direction parallel to picture, and is in
Picture centre or lower 1/3rd position.Based on this, processor 140 can utilize rim detection
(edge detection) and Hough change (Hough transform), detected from preview screen to
A few horizontal straight line, then it is aided with the horizontal straight line at the depth information filtering close shot of preview screen to obtain ground
Horizontal line.Then, processor 140 judge again horizon whether parallel to preview screen horizontal direction and
At the centre of preview screen or lower 1/3rd.If so, then processor 140 can determine that this preview
Picture meets photography composition requirement.
In another example, if processor 140 judges that photographed scene is the feature scene with prospect object
When, it will determine that whether this preview screen meets the composition rule of nearly thing closeup picture (close-up).Citing comes
Say, processor 140 may determine that whether prospect object is clear and meets the shadow in golden proportional rule
Central composition as trichotomy composition or positioned at the centre of preview screen.If so, then processor 140 can
Judge that this preview screen meets photography composition requirement.
In addition, color information is also the important element in photography composition, and processor 140 can be further
Ground obtains the chroma-luminance information of preview screen, to judge whether to meet photography composition requirement.For example,
Assuming that when processor 140 judges that photographed scene has prospect, middle scape and background, except can determine whether
Meet outside image trichotomy composition, more can further judge brightness between three, color and right
Whether meet photography composition requirement than degree.
Fig. 2 please be return, in the present embodiment, when processor 140 judges that preview screen meets photography structure
When figure requires, then the shooting preview picture (step S210) of the first camera lens 110 will be utilized.On the other hand,
, can be according to scene analysis result when processor 140 judges that preview screen does not meet photography composition requirement
Corresponding photography composition rule, there is provided the photography composition suggestion (step S212) met.
For example, when the prospect in preview screen is not in well word composition focus, processor 140
The focus and prompt message of well word composition can be shown in preview screen, and guides user's mobile shadow
As acquisition device 100 so that prospect can meet gold composition rule positioned at the focus of well word composition.This
Outside, processor 140 more can not highlight shot subject in the chroma-luminance information for judging current prospect
When, it is, for example, the related advisorys such as contrast deficiency to give user, and guiding user is according to suggestion adjustment phase
The parameter of pass, the photo of photographic esthetics value is met so that user can shoot.Again in another example, when
When horizon in preview screen does not have horizontal, processor 140 can the centre in preview screen or under
A horizontal line and prompt message are shown at 1/3, to guide user's movable image acquisition device
100, so that horizon and shown horizontal line overlap in preview screen.
The photography composition method of foregoing video capturing device 100 can utilize Fig. 3 according to one embodiment of the invention
Shown function box flow chart represents.
Referring to Fig. 1 and Fig. 3, when 100 photographed scene to be directed to of video capturing device is clapped
When taking the photograph, processor 140 will obtain the preview screen (step S302) of photographed scene using the first camera lens 110,
And the depth information (step S304) of photographed scene is obtained using depth sense device 120.Then, locate
Photographed scene analysis (step S306) will be carried out according to depth information for preview screen by managing device 140,
To produce photography composition analysis (step S308), and will be according to scene analysis result and corresponding
Photography composition rule R, judges whether preview screen meets photography composition requirement (step S310).If so,
The shooting preview picture (step S312) of the first camera lens 110 will then be utilized.If it is not, then taken the photograph corresponding to
Shadow composition rule R proposes photography composition suggestion (step for the user of video capturing device 100
S314), the photo of photographic esthetics value is met to guide user to shoot.Step S302~step S314
Detailed step refer to the related descriptions of aforementioned paragraphs, repeated no more in this.
In summary, the method for video capturing device proposed by the invention and its photography composition, it is utilized
The preview screen and depth information of photographed scene, the scene analysis of three dimensions is carried out for photographed scene,
And photography composition rule is inserted in, to judge whether the composition of preview screen meets photography composition requirement, according to
To determine whether shooting preview picture.In addition, the present invention, which can also be directed to preview screen, provides user's feedback
Information, to aid in and guide user more accurately to find a view suggestion, so as to shoot, to meet photography beautiful
Learn the photo of value.
Although the present invention is disclosed as above with embodiment, so it is not limited to the present invention, any affiliated
Those of ordinary skill in technical field, it is without departing from the spirit and scope of the present invention, a little when that can make
Change and retouching, within the scope of the present invention.
Claims (21)
1. a kind of method of photography composition, is obtained suitable for the image with the first camera lens and depth sense device
Take device, it is characterised in that comprise the following steps：
The preview screen of photographed scene is obtained using first camera lens；
The depth information of the photographed scene is obtained using the depth sense device；
According to the depth information, scene analysis is carried out for the preview screen, to produce scene analysis
As a result；
According to the scene analysis result and corresponding photography composition rule, judge that the preview screen is
It is no to meet photography composition requirement；
If so, utilize preview screen described in first lens shooting；And
If it is not, the photography composition rule according to corresponding to the scene analysis result, there is provided meet institute
State the composition suggestion of photographed scene.
2. according to the method for claim 1, it is characterised in that according to the depth information, for
The preview screen carries out scene analysis, is included with producing the step of the scene analysis result：
When the region area for being located at high depth section in the preview screen is more than default distant view area, if
The fixed scene analysis result is Outdoor Scene, wherein positioned at the high depth section pixel depth away from
From more than high depth range gate threshold value.
3. according to the method for claim 2, it is characterised in that the picture positioned at the high depth section
The grey decision-making of element is less than low GTG threshold value.
4. according to the method for claim 1, it is characterised in that according to the depth information, for
The preview screen carries out scene analysis, is included with producing the step of the scene analysis result：
When the region area for being located at low depth section in the preview screen is more than default feature area, if
The fixed scene analysis result is feature scene, wherein positioned at the low depth section pixel depth away from
From less than low depth range gate threshold value.
5. according to the method for claim 4, it is characterised in that the picture positioned at the low depth section
The grey decision-making of element is more than high gray threshold value.
6. according to the method for claim 1, it is characterised in that according to the depth information, for
The preview screen carries out scene analysis, is included with producing the step of the scene analysis result：
When the region area for being located at middle depth intervals in the preview screen is more than default close shot area, if
The fixed scene analysis result is indoor scene, wherein positioned at the middle depth intervals pixel depth away from
From between low depth range gate threshold value and high depth range gate threshold value.
7. according to the method for claim 6, it is characterised in that positioned at the picture of the middle depth intervals
The grey decision-making of element is between low GTG threshold value and high gray threshold value.
8. according to the method for claim 1, it is characterised in that the photography composition rule includes closing
An at least shot subject is coupled in configuration spatially and chroma-luminance information wherein at least one.
9. according to the method for claim 1, it is characterised in that according to the depth information, for
The preview screen carries out scene analysis, is included with producing the step of the scene analysis result：
When having the region more than two different depth sections in the preview screen, the scene is set
Analysis result is the scene including at least prospect and background.
10. according to the method for claim 9, it is characterised in that according to the scene analysis result with
And the corresponding photography composition rule, judge whether the preview screen meets the step of photography composition requirement
Suddenly include：
Judge whether the prospect meets golden proportional rule, judge whether the preview screen meets according to this
The photography composition requirement.
11. according to the method for claim 1, it is characterised in that when the scene analysis result is tool
When having the feature scene of prospect object, according to the scene analysis result and the corresponding photography structure
Figure rule, judge that the step of whether preview screen meets photography composition requirement includes：
Judge whether the prospect object is clear and meet golden proportional rule or positioned at the preview
The centre of picture, judges whether the preview screen meets the photography composition requirement according to this.
12. according to the method for claim 1, it is characterised in that when the scene analysis result is family
During outer scene, according to the scene analysis result and the corresponding photography composition rule, described in judgement
Whether preview screen, which meets the step of photography composition requirement, includes：
Obtain the horizon of the preview screen；And
Judge the horizon whether parallel to the preview screen horizontal direction and be located at the preview
At the centre of picture or lower 1/3rd, judge whether the preview screen meets the photography structure according to this
Figure requires.
13. according to the method for claim 12, it is characterised in that obtain the institute of the preview screen
Stating horizontal step includes：
Changed using rim detection and Hough, at least one horizontal straight line is detected from the preview screen；
And
According to the depth information, filtering is located at the horizontal straight line of close shot, to obtain the horizon.
A kind of 14. video capturing device, it is characterised in that including：
First camera lens；
Depth sense device；
Memory, to store multiple photography composition rules；And
Processor, the first camera lens, the depth sense device and the memory are coupled, wherein
The processor obtains the preview screen of photographed scene to utilization first camera lens, and described in utilization
Depth sense device obtains the depth information of the photographed scene, further according to the depth information, for described
Preview screen carries out scene analysis, to produce scene analysis result, and according to the scene analysis result
And corresponding photography composition rule, judge whether the preview screen meets photography composition requirement, wherein
When the preview screen meets the photography composition requirement, the processor is clapped using first camera lens
The preview screen is taken the photograph, when the preview screen does not meet the photography composition requirement, the processor
The photography composition rule according to corresponding to the scene analysis result, there is provided meet the photographed scene
Composition suggestion.
15. video capturing device according to claim 14, it is characterised in that
Preset when the processor judges that the region area for being located at high depth section in the preview screen is more than
During distant view area, the scene analysis result is set as Outdoor Scene, wherein positioned at the high depth section
The depth distance of pixel be more than high depth range gate threshold value；
When the region area for being located at low depth section in the preview screen is more than default feature area, if
The fixed scene analysis result is feature scene, wherein positioned at the low depth section pixel depth away from
From less than low depth range gate threshold value；And
Preset when the processor judges that the region area for being located at middle depth intervals in the preview screen is more than
During close shot area, the scene analysis result is set as indoor scene, wherein positioned at the middle depth intervals
Pixel depth distance between the low depth range gate threshold value and the high depth range gate threshold value it
Between.
16. video capturing device according to claim 15, it is characterised in that the preview screen
In the grey decision-making of pixel positioned at the high depth section be less than low GTG threshold value, positioned at the low depth
The grey decision-making of the pixel in section is more than high gray threshold value, positioned at the GTG of the pixel of the middle depth intervals
Value is between the low GTG threshold value and the high gray threshold value.
17. video capturing device according to claim 14, it is characterised in that the photography composition
Rule includes being associated with an at least shot subject in configuration spatially and chroma-luminance information wherein at least
One.
18. video capturing device according to claim 15, it is characterised in that when the processor
When judging that the preview screen has the region in more than two different depth value sections, the processor setting
The scene analysis result is the scene including at least prospect and background, and whether judges the prospect
Meet golden proportional rule, judge whether the preview screen meets the photography composition requirement according to this.
19. video capturing device according to claim 15, it is characterised in that when the scene point
When analysis result is the feature scene with prospect object, the processor judges that the prospect object is
It is no clear and meet golden proportional rule or positioned at the centre of the preview screen, judge according to this described in
Whether preview screen meets the photography composition requirement.
20. video capturing device according to claim 15, it is characterised in that when the scene point
When analysis result is Outdoor Scene, the processor is obtained described in horizon and the judgement of the preview screen
Horizon whether parallel to the preview screen horizontal direction and positioned at the preview screen centre or
It is at lower 1/3rd, judges whether the preview screen meets the photography composition requirement according to this.
21. video capturing device according to claim 15, it is characterised in that the processor profit
Changed with rim detection and Hough, at least one horizontal straight line and root is detected from the preview screen
According to the depth information, filtering is located at the horizontal straight line of close shot, to obtain the horizon.
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| CN110381247A (en) * | 2018-04-12 | 2019-10-25 | 夏普株式会社 | The control method of photographic device and photographic device |
| CN113516447A (en) * | 2021-05-21 | 2021-10-19 | 陕西迅税通智能科技有限公司 | Electronic device and method for outputting fiscal reasoning matching result based on computer |
| CN115190236A (en) * | 2021-04-07 | 2022-10-14 | 深圳市万普拉斯科技有限公司 | Image shooting method and device, computer equipment and storage medium |
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