CN106231234A - The image pickup method of video conference and system - Google Patents
The image pickup method of video conference and system Download PDFInfo
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- CN106231234A CN106231234A CN201610639885.9A CN201610639885A CN106231234A CN 106231234 A CN106231234 A CN 106231234A CN 201610639885 A CN201610639885 A CN 201610639885A CN 106231234 A CN106231234 A CN 106231234A
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- value
- picture
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- facial zone
- face facial
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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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
- H04N23/61—Control of cameras or camera modules based on recognised objects
- H04N23/611—Control of cameras or camera modules based on recognised objects where the recognised objects include parts of the human body
-
- 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
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
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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
- H04N23/80—Camera processing pipelines; Components thereof
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention relates to image pickup method and the system of a kind of video conference, it is to be shot the target area at video conference target person place respectively by the first photographic head and second camera, obtain the first shooting picture and the second shooting picture respectively, obtain the area value of the face facial zone of target person in the first shooting picture and the second shooting picture, and determine that the first shooting picture or the second shooting picture are picture to be shown according to the area value of face facial zone.Picture to be shown is shown in the display device of video conference, it can be seen that the figure of target person and face, even if target person moves in the target area, the blind area of shooting can be eliminated by two photographic head, figure and the facial expression of target person can be seen by switching photographic head in the shooting picture of display.
Description
Technical field
The present invention relates to video camera and control technical field, particularly relate to the image pickup method of a kind of video conference and be
System.
Background technology
Video conference is in the people in two or more place, by communication equipment and network, talks face to face
Meeting.When carrying out video conference, it is common that by photographic head, video conference is shot, show bat on the display device
Take the photograph the picture obtained, but if meeting speaker walks about before photographic head, due to the acquisition angles problem of current photographic head,
If going to the blind area of photographic head, figure and the facial expression that cannot watch speaker at display picture in time can be caused.
Summary of the invention
Based on this, it is necessary to for cannot see the figure of speaker and asking of facial expression in time when video conference
Topic, it is provided that the image pickup method of a kind of video conference and system.
The image pickup method of a kind of video conference, comprises the following steps:
Respectively the target area at video conference target person place is clapped by the first photographic head and second camera
Take the photograph, obtain the first shooting picture and the second shooting picture respectively；
The face face of the target person in the first shooting picture and the second shooting picture is identified respectively, it is thus achieved that the
In one shooting picture the first face facial zone of target person area value and in the second shooting picture the second of target person
The area value of face facial zone；
Judge whether the area value of the first face facial zone and the area value of the second face facial zone are more than pre-respectively
If value, preset if the area value of the first face facial zone is less than more than the area value of preset value and the second face facial zone
Value, it is determined that the first shooting picture is picture to be shown；
If the area value of the first face facial zone is more than pre-less than the area value of preset value and the second face facial zone
If value, it is determined that the second shooting picture is picture to be shown.
A kind of camera system of video conference, including with lower unit:
First shooting unit, for by the first photographic head and second camera respectively to video conference target person place
Target area shoot, obtain the first shooting picture and the second shooting picture respectively；
Recognition unit, for entering respectively the face face of the target person in the first shooting picture and the second shooting picture
Row identifies, it is thus achieved that mesh in the area value of the first face facial zone of target person and the second shooting picture in the first shooting picture
The area value of the second face facial zone of mark personage；
Judge performance element, for judging the area value of the first face facial zone and the second face facial zone respectively
Whether area value is more than preset value；At the area value of the first face facial zone more than preset value and the second face facial zone
When area value is less than preset value, determine that the first shooting picture is picture to be shown；Little at the area value of the first face facial zone
When the area value of preset value and the second face facial zone is more than preset value, determine that the second shooting picture is picture to be shown.
The image pickup method of the video conference according to the invention described above and system, it is by the first photographic head and the second shooting
The target area at video conference target person place is shot by head respectively, obtains the first shooting picture and the second shooting respectively
Picture, obtains the area value of the face facial zone of target person in the first shooting picture and the second shooting picture, and according to people
The area value of face facial zone determines that the first shooting picture or the second shooting picture are picture to be shown.Picture to be shown is shown
Show in the display device of video conference, it can be seen that the figure of target person and face, even if target person is in target area
Middle movement, can eliminate the blind area of shooting by two photographic head, can be in the shooting picture of display by switching photographic head
See figure and the facial expression of target person.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the image pickup method of the video conference of one of them embodiment；
Fig. 2 be the image pickup method of the video conference of one of them embodiment specifically apply schematic diagram；
Fig. 3 is the structural representation of the camera system of the video conference of one of them embodiment；
Fig. 4 is the structural representation of the camera system of the video conference of one of them embodiment.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, to this
Invention is described in further detail.Should be appreciated that detailed description of the invention described herein only in order to explain the present invention,
Do not limit protection scope of the present invention.
Shown in Figure 1, for the schematic flow sheet of the image pickup method of video conference in one embodiment of the invention.This enforcement
The image pickup method of the video conference in example, comprises the following steps:
Step S101: the target area to video conference target person place respectively by the first photographic head and second camera
Territory shoots, and obtains the first shooting picture and the second shooting picture respectively；
Step S102: the face face of the target person in the first shooting picture and the second shooting picture is known respectively
Not, it is thus achieved that target person in the area value of the first face facial zone of target person and the second shooting picture in the first shooting picture
The area value of the second face facial zone of thing；
Step S103: judge that the area value of the first face facial zone and the area value of the second face facial zone are respectively
It is no more than preset value, if the area value of the first face facial zone is little more than the area value of preset value and the second face facial zone
In preset value, it is determined that the first shooting picture is picture to be shown；If the area value of the first face facial zone is less than preset value
And second the area value of face facial zone more than preset value, it is determined that the second shooting picture is picture to be shown.
In the present embodiment, the mesh to video conference target person place respectively by the first photographic head and second camera
Mark region shoots, and obtains the first shooting picture and the second shooting picture respectively, obtains the first shooting picture and the second shooting
The area value of the face facial zone of target person in picture, and determine the first shooting according to the area value of face facial zone
Picture or the second shooting picture are picture to be shown.Picture to be shown is shown in the display device of video conference, can see
To figure and the face of target person, even if target person moves in the target area, bat can be eliminated by two photographic head
The blind area taken the photograph, can see figure and the facial expression of target person in the shooting picture of display by switching photographic head.
Preferably, the shooting of video conference is primarily directed to the target area at target person place, and target person can be
Meeting speaker, meeting speaker is between electronic whiteboard and position, dais, and target area can be electronic whiteboard and dais
Region between position；
Preferably, by opencv (computer vision of increasing income storehouse) technology in the first shooting picture and the second shooting picture
The face face of target person be identified respectively, opencv technology can apply to carry out recognition of face in picture, accurate
Really analyze and obtain personage in picture face face various information；
Preferably, preset value can be according to seeing that the needs that personage expresses one's feelings are set.
Wherein in an embodiment, in the area value and the second face facial area that judge the first face facial zone respectively
The area value in territory is the most further comprising the steps of more than after the step of preset value:
If the area value of the area value of the first face facial zone and the second face facial zone is all higher than preset value, then than
More the first face facial zone and the area value of the second face facial zone, determine that the shooting picture that area value is bigger is to be shown
Picture.
In the present embodiment, the first shooting picture or the second shooting picture are being determined according to the area value of face facial zone
When face is picture to be shown, if the area value of the area value of the first face facial zone and the second face facial zone is all higher than
Preset value, the most the first face facial zone and the area value of the second face facial zone, select wherein face facial zone
The shooting picture that area value is bigger, the facial expression of the target person in such picture to be shown can seem and become apparent from rich
Rich.
Wherein in an embodiment, by the first photographic head and second camera to video conference target person place
Target area carry out the step shot before further comprising the steps of:
By the 3rd photographic head, the target area at video conference target person place is shot, it is thus achieved that third shot takes the photograph picture
Face；
Obtain third shot and take the photograph the position of target person in picture, calculate position and the first photographic head the first distance value and
Position and the second distance value of second camera；
Judging whether the area value of the first face facial zone and the second face facial zone is more than the step of preset value
The most further comprising the steps of:
If the area value of the area value of the first face facial zone and the second face facial zone is respectively less than preset value, then than
Relatively the first distance value and the size of second distance value, if the first distance value is more than second distance value, it is determined that the first shooting picture
For picture to be shown；If the first distance value is less than second distance value, it is determined that the second shooting picture is picture to be shown.
In the present embodiment, the 3rd photographic head is set and shoots, for obtaining the position of target person, and then can obtain
Obtain the distance of target person and the distance of the first photographic head and target person and second camera；At the first face facial zone
Area value and the area value of the second face facial zone when being respectively less than preset value, it is meant that whether the first photographic head or
The picture of two photographic head shootings, all cannot clearly show that the facial expression of target person, but now need the most completely to show mesh
The figure of mark personage, therefore the picture of chosen distance target person photographic head shooting farther out, can see whole target as far as possible
Personage.
The position of general first photographic head and second camera is can be pre-determined, in the position calculating target person
With the first distance value of the first photographic head and during with the second distance value of second camera, as long as it is true to take the photograph picture by third shot
Set the goal the position of personage, it is possible to is calculated the first distance value and second distance value.
Wherein in an embodiment, also include following after determining the step that the first shooting picture is picture to be shown
Step:
Second camera is set to standby mode；
After determining the step that the second shooting picture is picture to be shown further comprising the steps of:
First photographic head is set to standby mode.
In the present embodiment, after the shooting picture selecting one of them photographic head, it is set to treat by another photographic head
Machine pattern, it is possible to reduce energy consumption, it is to avoid the wasting of resources.
Wherein in an embodiment, after second camera is set to the step of standby mode, also include following step
Rapid:
In real-time judge the first shooting picture, whether the area value of the first face facial zone of target person is more than presetting
Value, if the area value of the first face facial zone of target person is less than preset value in the first shooting picture, then images second
Head is set to screening-mode, is back to by the first photographic head and second camera respectively to video conference target person place
Target area carries out the step shot；
After the first photographic head is set to the step of standby mode further comprising the steps of:
In real-time judge the second shooting picture, whether the area value of the second face facial zone of target person is more than presetting
Value, if the area value of the second face facial zone of target person is less than preset value in the second shooting picture, then images first
Head is set to screening-mode, is back to by the first photographic head and second camera respectively to video conference target person place
Target area carries out the step shot.
In the present embodiment, after the shooting picture determining a photographic head is picture to be shown, another photographic head sets
After being set to standby mode, need the shooting picture shown is carried out real-time judge, it is judged that the face of target person in picture
Whether the area value of facial zone is less than preset value, the most then the picture of possible another photographic head shooting more meets the requirements, because of
Another photographic head being in holding state can be set to shooting state by this, again selects the shooting picture of photographic head
Select, determine the shooting picture best suiting requirement.
Wherein in an embodiment, also include following after determining the step that the first shooting picture is picture to be shown
Step:
Second camera is set to standby mode, after Preset Time, second camera is set to screening-mode,
It is back to respectively the target area at video conference target person place be shot by the first photographic head and second camera
Step；
After determining the step that the second shooting picture is picture to be shown further comprising the steps of:
First photographic head is set to standby mode, after Preset Time, the first photographic head is set to screening-mode,
It is back to respectively the target area at video conference target person place be shot by the first photographic head and second camera
Step.
In the present embodiment, through Preset Time, the photographic head being in holding state is set to shooting state, the most right
The shooting picture of photographic head selects, and determines the shooting picture best suiting requirement.Preset Time can the most freely set
Fixed.
When the area value of the first face facial zone and the area value of the second face facial zone are respectively less than preset value, root
Select the shooting picture of two photographic head according to the size of the first distance value and second distance value, due to target person movement or
It is the rotation of head, the area value of face facial zone in the shooting picture of selection may be made to be less than or greater than preset value, this
Shi Wufa judges whether to need to be in standby mode according to the area value of face facial zone in the shooting picture selected
Photographic head is set to screening-mode, therefore can set a Preset Time, through Preset Time, will be in taking the photograph of holding state
As head is set to shooting state.
Wherein in an embodiment, the first photographic head and second camera are separately positioned on the both sides of target area.
In the present embodiment, the first photographic head and second camera can be arranged on the symmetrical position of both sides of target area
Put, respectively target area is shot, mutually eliminate the blind area of shooting.
Preferably, the first photographic head and second camera can be arranged on the symmetric position of both sides in front, dais.
Wherein in an embodiment, the 3rd photographic head is arranged on the top of target area.
In the present embodiment, the 3rd photographic head shoots from the top of target area, it is easier to from the picture of shooting
Determine target person location.
Preferably, the 3rd photographic head can be arranged on the top of electronic whiteboard.
In a specific embodiment, as in figure 2 it is shown, target area is the district between electronic whiteboard and position, dais
Territory, target person is meeting speaker, meeting speaker between electronic whiteboard and position, dais, the first photographic head and second
Photographic head is separately positioned on the symmetric position of both sides, front, dais, and the 3rd photographic head is arranged on the top of electronic whiteboard, photographic head
Angular field of view be generally about 110 °, a sector region can constituting with angular field of view according to dais size and height
Determine the shooting angle of the 3rd photographic head, it is generally required to downward-sloping certain angle, the first photographic head and second camera are clapped
Take the photograph angle and be generally level, if the target person that can photograph in target area.
According to the image pickup method of above-mentioned video conference, the present invention also provides for the camera system of a kind of video conference, the most just
The embodiment of the camera system of the video conference of the present invention is described in detail.
Shown in Figure 3, for the structural representation of the camera system of video conference in one embodiment of the invention.This enforcement
The camera system of the video conference in example includes with lower unit:
First shooting unit 210, for by the first photographic head and second camera respectively to video conference target person
The target area at place shoots, and obtains the first shooting picture and the second shooting picture respectively；
Recognition unit 220, for the face face part to the target person in the first shooting picture and the second shooting picture
It is not identified, it is thus achieved that the area value of the first face facial zone of target person and the second shooting picture in the first shooting picture
The area value of the second face facial zone of middle target person；
Judge performance element 230, for judging area value and the second face facial area of the first face facial zone respectively
Whether the area value in territory is more than preset value；Area value at the first face facial zone is more than preset value and the second face facial area
When the area value in territory is less than preset value, determine that the first shooting picture is picture to be shown；Area at the first face facial zone
When value is more than preset value less than the area value of preset value and the second face facial zone, determine that the second shooting picture is picture to be shown
Face.
Wherein in an embodiment, as shown in Figure 4, the camera system of video conference also includes the second shooting unit 240,
For the target area at video conference target person place being shot by the 3rd photographic head, it is thus achieved that third shot takes the photograph picture；
Position calculation unit 250, takes the photograph the position of target person in picture for obtaining third shot, calculates position and takes the photograph with first
Second distance value as the first distance value of head and position with second camera；
Judge that performance element 230 is additionally operable in the area value of the first face facial zone and the face of the second face facial zone
When product value is respectively less than preset value, compare the first distance value and the size of second distance value, if the first distance value is more than second distance
Value, it is determined that the first shooting picture is picture to be shown；If the first distance value is less than second distance value, it is determined that the second shooting picture
Face is picture to be shown.
The camera system of the video conference of the present invention and the image pickup method one_to_one corresponding of the video conference of the present invention, above-mentioned
The technical characteristic of the embodiment elaboration of the image pickup method of video conference and beneficial effect thereof are all applicable to the shooting system of video conference
In the embodiment of system.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that, come for those of ordinary skill in the art
Saying, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the image pickup method of a video conference, it is characterised in that comprise the following steps:
Respectively the target area at video conference target person place is shot by the first photographic head and second camera, point
Do not obtain the first shooting picture and the second shooting picture；
The face face of the target person in described first shooting picture and described second shooting picture is identified respectively, obtains
Mesh in the area value of the first face facial zone of target person and described second shooting picture in described first shooting picture
The area value of the second face facial zone of mark personage；
Judge that the area value of the area value of described the first face facial zone and described second face facial zone is the biggest respectively
In preset value, if the area value of described the first face facial zone is more than described preset value and described second face facial zone
Area value is less than described preset value, it is determined that described first shooting picture is picture to be shown；
If the area value of described the first face facial zone is less than described preset value and the area of described second face facial zone
Value is more than described preset value, it is determined that described second shooting picture is picture to be shown.
The image pickup method of video conference the most according to claim 1, it is characterised in that judge described first respectively described
Whether the area value of face facial zone and the area value of described second face facial zone are gone back more than after the step of preset value
Comprise the following steps:
If the area value of the area value of described the first face facial zone and described second face facial zone is all higher than described pre-
If value, the most described the first face facial zone and the area value of described second face facial zone, determine that area value is bigger
Shooting picture be picture to be shown.
The image pickup method of video conference the most according to claim 1, it is characterised in that described pass through the first photographic head and
Before the step that the target area at video conference target person place is shot by second camera further comprising the steps of:
By the 3rd photographic head, the target area at video conference target person place is shot, it is thus achieved that third shot takes the photograph picture；
Obtain described third shot and take the photograph the position of target person described in picture, calculate the of described position and described first photographic head
The second distance value of one distance value and described position and described second camera；
Judge that whether the area value of described the first face facial zone and described second face facial zone is more than presetting described
Value step after further comprising the steps of:
If the area value of the area value of described the first face facial zone and described second face facial zone is respectively less than described pre-
If value, the most described first distance value and the size of described second distance value, if described first distance value is more than described second
Distance value, it is determined that described first shooting picture is picture to be shown；If described first distance value is less than described second distance value,
Then determine that described second shooting picture is picture to be shown.
The image pickup method of video conference the most according to claim 1, it is characterised in that determine described first shooting described
Picture be picture to be shown step after further comprising the steps of:
Described second camera is set to standby mode；
Described determine the step that described second shooting picture is picture to be shown after further comprising the steps of:
Described first photographic head is set to standby mode.
The image pickup method of video conference the most according to claim 4, it is characterised in that described by described second camera
After being set to the step of standby mode further comprising the steps of:
In first shooting picture described in real-time judge, whether the area value of the first face facial zone of target person is more than described
Preset value, if the area value of the first face facial zone of target person is less than described preset value in described first shooting picture,
Then described second camera is set to screening-mode, is back to described the first photographic head and the second camera of passing through respectively to regarding
Frequently the target area at meeting target person place carries out the step shot；
After the described step that described first photographic head is set to standby mode further comprising the steps of:
In second shooting picture described in real-time judge, whether the area value of the second face facial zone of target person is more than described
Preset value, if the area value of the second face facial zone of target person is less than described preset value in described second shooting picture,
Then described first photographic head is set to screening-mode, is back to described the first photographic head and the second camera of passing through respectively to regarding
Frequently the target area at meeting target person place carries out the step shot.
The image pickup method of video conference the most according to claim 3, it is characterised in that determine described first shooting described
Picture be picture to be shown step after further comprising the steps of:
Described second camera is set to standby mode, after Preset Time, described second camera is set to shooting
Pattern, be back to described by the first photographic head and second camera target area to video conference target person place respectively
Carry out the step shot；
Described determine the step that described first shooting picture is picture to be shown after further comprising the steps of:
Described first photographic head is set to standby mode, after described Preset Time, described first photographic head is set to
Screening-mode, be back to described by the first photographic head and second camera target to video conference target person place respectively
Region carries out the step shot.
The image pickup method of video conference the most as claimed in any of claims 1 to 6, it is characterised in that described first
Photographic head and described second camera are separately positioned on the both sides of described target area.
8. according to the image pickup method of the video conference described in claim 3 or 6, it is characterised in that described 3rd photographic head is arranged
Above described target area.
9. the camera system of a video conference, it is characterised in that include with lower unit:
First shooting unit, for the mesh to video conference target person place respectively by the first photographic head and second camera
Mark region shoots, and obtains the first shooting picture and the second shooting picture respectively；
Recognition unit, for the face face part to the target person in described first shooting picture and described second shooting picture
It is not identified, it is thus achieved that the area value and described second of the first face facial zone of target person in described first shooting picture
The area value of the second face facial zone of target person in shooting picture；
Judge performance element, for judging the area value of described the first face facial zone and described second face facial area respectively
Whether the area value in territory is more than preset value；At the area value of described the first face facial zone more than described preset value and described the
When the area value of two face facial zones is less than described preset value, determine that described first shooting picture is picture to be shown；Institute
The area value stating the first face facial zone is more than institute less than the area value of described preset value and described second face facial zone
When stating preset value, determine that described second shooting picture is picture to be shown.
The camera system of video conference the most according to claim 9, it is characterised in that also include the second shooting unit, uses
In by the 3rd photographic head, the target area at video conference target person place being shot, it is thus achieved that third shot takes the photograph picture；
Position calculation unit, takes the photograph the position of target person described in picture for obtaining described third shot, calculate described position with
The second distance value of the first distance value of described first photographic head and described position and described second camera；
Described judgement performance element is additionally operable in the area value of described the first face facial zone and described second face facial area
When the area value in territory is respectively less than described preset value, relatively described first distance value and the size of described second distance value, if described
First distance value is more than described second distance value, it is determined that described first shooting picture is picture to be shown；If described first away from
Distance values is less than described second distance value, it is determined that described second shooting picture is picture to be shown.
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| CN201610639885.9A CN106231234B (en) | 2016-08-05 | 2016-08-05 | The image pickup method and system of video conference |
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| CN107295309A (en) * | 2017-07-29 | 2017-10-24 | 安徽博威康信息技术有限公司 | A kind of target person locking display system based on many monitor videos |
| CN107370948A (en) * | 2017-07-29 | 2017-11-21 | 安徽博威康信息技术有限公司 | A kind of studio video intelligent switch method |
| CN107483875A (en) * | 2017-07-19 | 2017-12-15 | 合肥盛东信息科技有限公司 | A kind of Remote Video Conference service management |
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| CN113473011B (en) * | 2021-06-29 | 2023-04-25 | 广东湾区智能终端工业设计研究院有限公司 | Shooting method, shooting system and storage medium |
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