CN106899786A - Monitor camera device and its application method - Google Patents
Monitor camera device and its application method Download PDFInfo
- Publication number
- CN106899786A CN106899786A CN201510967797.7A CN201510967797A CN106899786A CN 106899786 A CN106899786 A CN 106899786A CN 201510967797 A CN201510967797 A CN 201510967797A CN 106899786 A CN106899786 A CN 106899786A
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- China
- Prior art keywords
- led
- monitoring camera
- convex lens
- optical transmission
- transmission window
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Classifications
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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
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
-
- 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
- H04N23/51—Housings
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
Abstract
The present invention provides monitor camera device, the LED light supplement lamp installed in the same direction including monitoring camera and with monitoring camera, LED light supplement lamp includes housing and is arranged on circuit control module, the LED of enclosure interior, the front end of housing is provided with reflector and optical transmission window, circuit control module is connected with LED, the optical transmission window is engaged setting with the outlet of reflector, and the optical transmission window is provided with convex lens, and the power of the LED is 5-50W.Present invention also offers a kind of application method of the monitor camera device.Monitor camera device of the present invention avoids automobile front lamp direct irradiation monitoring camera, it is entirely avoided the conditions of streaking during shooting；The light compensating lamp power for being used is low, energy-conserving and environment-protective；Uniform light emitted by light compensating lamp is soft, and the sight line of driver is not influenceed, ensure that the safe driving of driver, safe；Car license plate recognition rate can be improved, requirement of the license plate intelligently retrieval to image definition is reached.
Description
Technical field
The invention belongs to monitor camera device field, taken the photograph more particularly, to a kind of monitoring for night traffic monitoring camera
As device.
Background technology
Night movement vehicle license plate identification at this stage is main auxiliary by bayonet socket camera, electronic police (essence is still bayonet socket camera)
Flash lighting is helped to realize, but both the above equipment price is high, and mounting process is complicated, is not suitable for extensive popularization, it is impossible to reach
The requirement of all standing is monitored to safe city.Common high definition monitoring camera night identification moving vehicle car plate relies primarily on Chang Liang
Light source light filling, but vehicle strong illumination cannot be suppressed, picture conditions of streaking is solved, discrimination is extremely low.Traditional light compensation method is used
, there is power consumption big, it is impossible to suppress vehicle high light in Halogen lamp LED (more than power 500W), LED white lights (more than power 80W),
Moving vehicle picture conditions of streaking cannot be solved, Car license recognition rate is low.Halogen lamp light color is unfavorable to Car license recognition, discrimination
It is only capable of reaching 30%, car plate definition is not high, and service life is short, and power consumption is high, caloric value is big, starts moment to monitoring system
System influence is big, easily causes equipment failure rate rising.Power 80W above LED white lights are favourable to Car license recognition, but LED light
Concentrate, skewness, light beam center section is brighter, and both sides are substantially shaded, and can only recognize the brighter position car plate of light beam, it is impossible to cover
Cover whole road surface, it is impossible to suppress vehicle high light, it is impossible to solve moving vehicle picture conditions of streaking, discrimination is less than 50%, car plate
Definition can be with, but lamp from dazzling, easily triggers traffic accident, does not meet traffic safety code requirement.
Patent 201220656533.1 discloses a kind of new road monitor camera device, including camera, on camera
Image processing apparatus are connected with, data storage device are connected on image processing apparatus, second camera device is connected with camera,
Second camera device includes sensing device and light compensating apparatus, and sensing device and light compensating apparatus are connected with camera.The new road
Road monitor camera device, it is possible to increase shoot precision and shooting image quality.
The monitor camera device of prior art has that high energy consumption, security be poor, picture easily occurs,
How night uses a kind of monitor camera device and method, can both suppress vehicle strong illumination, and moving vehicle can be recognized again
Car plate, is the problem in monitoring trade, does not there is successful case so far both at home and abroad, with the intelligent good application of high-definition monitoring,
Social demand is more urgent.
The content of the invention
It is an object of the invention to provide a kind of monitor camera device of vehicle license plate in identification motion for night, car is improved
Number plate discrimination, reaches requirement of the license plate intelligently retrieval to image definition, reduces the work(of monitor camera device light compensating lamp
Rate, can also protect driver safety to drive while energy-conserving and environment-protective.
The technical scheme is that：
Monitor camera device, including monitoring camera and the LED light supplement lamp installed in the same direction with monitoring camera, LED light fillings
Lamp includes housing and is arranged on circuit control module, the LED of enclosure interior, and the front end of housing is provided with reflector and light inlet window
Mouthful, circuit control module is connected with LED, and the optical transmission window is engaged setting, the light inlet window with the outlet of reflector
Mouth is provided with convex lens, and the power of the LED is 5-50W.
The LED light supplement lamp of monitor camera device of the present invention uses the convex lens that are engaged with optical transmission window, convex lens with it is anti-
Light cup is engaged to concentrate the light of the diverging emitted by LDE lamps turns into parallel rays, is distributed the light in range of exposures equal
Even, brightness is consistent.Researcher of the present invention uses power to be combined with convex lens for the LED of 5-50W by numerous studies discovery
The requirement of number plate of vehicle identification can either be met, can avoid light too strong again, cause picture conditions of streaking.And the present invention
The source light that LED light supplement lamp is provided is soft, and in driving procedure, driver is with LED apart from the light not existed together for driver
Line brightness is consistent, will not influence driver's sight line because light changes, and causes security incident.
Preferably, the power of the LED is 10-30W.
It is furthermore preferred that the power of the LED is 20W.
The optical transmission window is circle, and the convex lens are diameter planoconvex spotlight identical with optical transmission window, and the plano-convex is saturating
The plane of mirror injects face for light, and the convex surface of the planoconvex spotlight is light outgoing plane, the horizontal edge of the planoconvex spotlight with
The madial wall of optical transmission window is connected, and the convex surface of the convex lens is hemisphere face or half ellipsoidal surface.
The convex lens also include the cylindrical sides and ring surface with plane parallel perpendicular with plane, cylinder
One end of side is adjacent with plane, and the other end of cylindrical sides is cylindrical with ring surface to be connected, the ring surface inner circle with it is convex
Face is connected, and the cylindrical sides are connected with the madial wall of optical transmission window.
Cylindrical sides and ring surface and the plane of convex lens constitute one be looped around convex lens bottom with certain
The cylinder of height.The cylinder not only facilitates the installation of convex lens, makes the connection between convex lens and optical transmission window more firm
Gu, yet further enhances the light collecting effect of convex lens.Just there are conventional convex lens, some light may be at the edge of convex lens
Directly project, there is no light collecting effect, and a cylinder being integrally machined with convex lens is provided with the bottom of convex lens, portion
Divide the light for being mapped to meniscus edge, by the multiple refraction and reflection of cylindrical side wall and ring surface, be returned to reflector
In, by the reflection of reflector, projected from the other parts of convex lens again.
The ring surface inner circle radius are the 80-96% of ring surface exradius.
Researcher of the present invention has found by many experiments, when ring surface inner circle radius are the 80-96% of exradius, collection
Light effect preferably, can either prevent some light from directly being projected from the edge of convex lens, and ring surface inner circle and ring can be avoided again
Shape face is the distance between cylindrical excessive, and light is directed through ring surface injection.
The distance between the convex lens mirror plane and LED are the 1/2-1/3 of planoconvex spotlight focal length.
The LED is regular polygon or circle, and the center of the LED is described just polygon on the axis of convex lens
The side number of shape is more than or equal to 4, and the drift angle of the regular polygon and the ring surface of convex lens are cylindrical same burnt with convex lens
Point is on the circular conical surface on summit.
Can so be further ensured that by the light of convex lens be directional light, and uniform light is soft in irradiation area.
The reflector includes cup bottom and wall of cup, and the cup bottom is a circular flat, and wall of cup is a frustum of a cone side wall, cup bottom
Smooth excessiveness is connected between wall of cup small end, and the outlet of reflector is the big end of wall of cup, is provided with the middle part of cup bottom and is engaged with LED
Hole, the wall of cup outside diameter is identical with the ring surface outside diameter of convex lens.
The light that LED is projected reflects through the multiple refraction of the multiple reflections and convex lens of reflective wall of cup, finally except straight
Connected outside the light of convex lens injection, other most of light enter in convex lens after the reflection of reflector base plane.
Reflector interacts with convex lens and further increases the effect of light concentration.LED is set also can under relatively low power
Reach the effect of clear identification number plate of vehicle.
The front end of the housing is additionally provided with shadow shield, and shadow shield is connected with housing, and shadow shield is provided with optical transmission window.
The light for being provided for ensureing LED injection of shadow shield is all by convex lens.
It is another object of the present invention to provide a kind of application method of described monitor camera device, including following step
Suddenly：
1) monitoring camera and LED light supplement lamp are separately mounted on monitoring crossbeam；
2) direction of illumination of the direction of adjustment monitoring camera and LED light supplement lamp, makes the most intense irradiation region of LED light supplement lamp
Most clear area is shot with monitoring camera to overlap；
3) the shutter parameter of regulation monitoring camera is 1/100-1/300；
4) daytime, evening respectively debug a monitoring camera, make shooting picture clear.
Monitor camera device of the present invention, the supplement light source of LED light supplement lamp can cover whole road surface, and reach identification car
The brightness of board；When the shutter parameter of monitoring camera is 1/100-1/300, intense light irradiation of the vehicle to monitoring camera can be suppressed
Penetrate, solve the problems, such as that moving vehicle picture trails.
Wherein, the step 1) in regulation monitoring camera and LED light supplement lamp between mounting distance be 0.5-1m；
The step 2) direction including adjustment monitoring camera, monitoring camera is shot most clear area horizontal with monitoring
The distance between beam is 10-30m, adjusts the direction of illumination of LED light supplement lamp, makes the most intense irradiation region of LED light supplement lamp and monitoring
Camera shoots most clear area and overlaps.
It is 10-30m that monitoring camera is shot into most clear area with the distance between crossbeam is monitored, and can further be kept away
Exempt from strong illumination of the automobile front lamp to camera, reduce interference of the light to Car license recognition, the picture that raising is photographed it is clear
Degree, night Car license recognition works well, and discrimination has reached more than 97%.
Preferably, the step 3) in regulation monitoring camera shutter parameter be 1/150-1/200.
The present invention has the advantages and positive effects that：
1st, LED power is low, energy-conserving and environment-protective；
2nd, number plate of vehicle identification is clear, and discrimination has reached more than 97%；
3rd, the light in range of exposures is evenly distributed, and brightness is consistent, and driver's sight line is not influenceed, safe；
4th, automobile front lamp direct irradiation monitoring camera is avoided, picture conditions of streaking is caused.
Brief description of the drawings
Fig. 1 is the structural representation of monitor camera device of the present invention
Fig. 2 is the structural representation of LED light supplement lamp of the present invention
Fig. 3 is the side view of reflector of the present invention
Fig. 4 is the top view of reflector of the present invention
Fig. 5 is the side view of convex lens of the present invention
Fig. 6 is the top view of convex lens of the present invention
In figure：
Ith, LED light supplement lamp II, monitoring crossbeam III, monitoring camera 1, housing 2, circuit control module
3rd, LED 4, electric wire 5, reflector 6, optical transmission window 7, convex lens
8th, shadow shield 51, cup bottom 52, wall of cup 521, the big end of wall of cup small end 522, wall of cup
71st, plane 72, convex surface 73, cylindrical sides 74, ring surface 741, ring surface inner circle
742nd, ring surface is cylindrical
Specific embodiment
As shown in figure 1, monitor camera device of the present invention, including monitoring camera III and installed in the same direction with monitoring camera III
LED light supplement lamp I, monitoring camera III and LED light supplement lamp I are arranged on monitoring crossbeam II.Monitor camera device of the present invention should
When being imaged for road monitoring, monitoring camera III and LED light supplement lamp I are preferably arranged on the centre position above road,
Mounting distance between monitoring camera III and LED light supplement lamp I is 0.5-1m.
Monitoring camera III can use common high-definition monitoring camera commonly used in the prior art.As shown in Fig. 2 LED is mended
Light lamp I includes that housing 1 and the circuit control module 2 and power that are arranged on inside housing 1 are the LED 3 of 5-50W, circuit control
Module 2 is connected with LED 3 by electric wire 4, and reflector 5 and optical transmission window 6 are provided with the front end of housing 1, optical transmission window 6 with
The outlet of reflector 5 is engaged setting, and convex lens 7 are provided with optical transmission window 6.Preferably, the power of the LED is
10-30W.It is furthermore preferred that the power of the LED is 20W.
As shown in Figure 5, Figure 6, convex lens 7 can be diameter and the identical planoconvex spotlight of optical transmission window 6.The plane of planoconvex spotlight
71 inject face for light, and the convex surface 72 of planoconvex spotlight is light outgoing plane, and the horizontal edge of planoconvex spotlight is interior with optical transmission window 6
Side wall is connected.The convex surface 72 of planoconvex spotlight can be hemisphere face, or half ellipsoidal surface.
A lighttight shadow shield 8 can be provided with the front end of housing 1, shadow shield 8 is connected with housing 1, in shading
The middle part of plate 8 is provided with an optical transmission window for circle 6, and the edge of convex lens 7 is connected with the madial wall of optical transmission window 6, will be convex
Lens 7 are fixedly mounted on optical transmission window 6.Shadow shield 8 and convex lens 7 can also be integrally machined shaping by glass, in shading
Side inside the housing 1 of plate 8 is covered with photomask.
Convex lens 7 can also include the cylindrical sides 73 and with plane 71 parallel ring surface perpendicular with plane 71
74, one end of cylindrical sides 73 is adjacent with plane 71, and the other end cylindrical with ring surface 742 of cylindrical sides 73 is connected,
Ring surface inner circle 741 is connected with convex surface 72, and cylindrical sides 73 are connected with the madial wall of optical transmission window 6.Also it is equivalent to
A cylinder is provided with the planoconvex spotlight bottom of hemispherical or semielliptical shape, cylinder is integrally machined with planoconvex spotlight and forms.
The light that cylindrical sides 73 and ring surface 74 can project part from planoconvex spotlight edge is reflected by multiple reflections, to reflective
On cup, finally projected from the middle part of convex lens 7.Preferably, the radius of ring surface inner circle 741 is cylindrical 742 radius of ring surface
80-96%.
The distance between the plane 71 of convex lens 7 and LED 3 are the 1/2-1/3 of planoconvex spotlight focal length.LED 3 is just polygon
Shape or circle, the center of LED 3 is on the axis of convex lens 7.Preferably, LED 3 is regular polygon, the side number of regular polygon
More than or equal to 4, the drift angle of the regular polygon and the ring surface cylindrical 742 of convex lens 7 are with the focus of convex lens 7 same
On the circular conical surface on summit.
As shown in Figure 3, Figure 4, reflector 5 includes cup bottom 51 and wall of cup 52, and cup bottom 51 is a circular flat, and wall of cup 52 is one
Frustum of a cone side wall, smooth excessiveness connection between cup bottom 51 and wall of cup small end 521, the outlet of reflector 5 is the big end 522 of wall of cup, cup
The middle part at bottom 51 is provided with the hole being engaged with LED 3.The big diameter of end 522 of wall of cup 742 diameter cylindrical with ring surface is identical.
Photosensitive switch is also provided with the housing 1 of LED light supplement lamp I, LED light supplement lamp can be opened according to the intensity of light
I, during daytime, intensity of illumination is high, and LED light supplement lamp I is closed, and during evening, dark, LED light supplement lamp I is opened, and realizes LED light fillings
Lamp I is automatically controlled, further energy saving.
The course of work of this example：Monitoring camera III and LED light supplement lamp I are arranged on monitoring crossbeam II, adjustment prison
The direction of camera III and the direction of illumination of LED light supplement lamp I are controlled, makes the most intense irradiation region of LED light supplement lamp I and monitoring camera
III shoot most clear area overlap, it is preferred that monitoring camera III shoot most clear area and monitoring crossbeam II between away from
From being 10-30m；The shutter parameter for adjusting monitoring camera is 1/100-1/300；Daytime, LED light supplement lamp I closed post debugging once
Monitoring camera III, evening LED light supplement lamp I debugs a monitoring camera III again after opening, and makes shooting picture clear.
After light is projected from LED 3, by the multiple reflections or refraction of reflector 5 and convex lens 7, LED 3 sends
Light be gathered into parallel light beam, by adjust the shutter of monitoring camera III suppress automobile front lamp strong illumination, make monitoring picture
Number plate of vehicle in face is high-visible.
One embodiment of the present of invention has been described in detail above, but the content is only preferable implementation of the invention
Example, it is impossible to be considered as limiting practical range of the invention.All impartial changes made according to the present patent application scope and improvement
Deng all should still belong within patent covering scope of the invention.
Claims (10)
1. monitor camera device, including monitoring camera and the LED light supplement lamp installed in the same direction with monitoring camera, LED light supplement lamp
Including housing and the circuit control module, the LED that are arranged on enclosure interior, the front end of housing is provided with reflector and optical transmission window,
Circuit control module is connected with LED, it is characterised in that：The optical transmission window is engaged setting, institute with the outlet of reflector
State optical transmission window and be provided with convex lens, the power of the LED is 5-50W.
2. monitor camera device according to claim 1, it is characterised in that：The optical transmission window is circle, the convex lens
Mirror is diameter planoconvex spotlight identical with optical transmission window, and the plane of the planoconvex spotlight injects face for light, the planoconvex spotlight
Convex surface is light outgoing plane, and the horizontal edge of the planoconvex spotlight is connected with the madial wall of optical transmission window, the convex lens
Convex surface is hemisphere face or half ellipsoidal surface.
3. monitor camera device according to claim 2, it is characterised in that：The convex lens also include perpendicular with plane
Cylindrical sides and the ring surface with plane parallel, one end of cylindrical sides is adjacent with plane, cylindrical sides it is another
One end is cylindrical with ring surface to be connected, and the ring surface inner circle is connected with convex surface, the cylindrical sides and optical transmission window
Madial wall is connected.
4. monitor camera device according to claim 3, it is characterised in that：The ring surface inner circle radius are outside ring surface
The 80-96% of radius of circle.
5. the monitor camera device according to claim 2-4 any one, it is characterised in that：The convex lens mirror plane with
The distance between LED is the 1/2-1/3 of planoconvex spotlight focal length.
6. monitor camera device according to claim 5, it is characterised in that：The LED is regular polygon or circle, institute
The center of LED is stated on the axis of convex lens, the side number of the regular polygon is more than or equal to 4, the top of the regular polygon
The ring surface of angle and convex lens is cylindrical on the same circular conical surface with concave lens focus as summit.
7. the monitor camera device according to claim 1-4 any one, it is characterised in that：The reflector includes cup bottom
And wall of cup, the cup bottom is a circular flat, and wall of cup is a frustum of a cone side wall, and smooth excessiveness connects between cup bottom and wall of cup small end
Connect, the outlet of reflector is the big end of wall of cup, be provided with the hole being engaged with LED in the middle part of cup bottom, the wall of cup outside diameter with
The ring surface outside diameter of convex lens is identical.
8. the application method of the monitor camera device described in a kind of claim 1-7 any one, it is characterised in that：Including following
Step：
1) monitoring camera and LED light supplement lamp are separately mounted on monitoring crossbeam；
2) direction of illumination of the direction of adjustment monitoring camera and LED light supplement lamp, makes the most intense irradiation region of LED light supplement lamp and prison
Control camera shoots most clear area and overlaps；
3) the shutter parameter of regulation monitoring camera is 1/100-1/300；
4) daytime, evening respectively debug a monitoring camera, make shooting picture clear.
9. application method according to claim 8, it is characterised in that：
The step 1) in regulation monitoring camera and LED light supplement lamp between mounting distance be 0.5-1m；
The step 2) including adjust monitoring camera direction, make monitoring camera shoot most clear area with monitoring crossbeam it
Between distance be 10-30m, adjust LED light supplement lamp direction of illumination, make the most intense irradiation region of LED light supplement lamp and monitoring camera
Head shoots most clear area and overlaps.
10. application method according to claim 9, it is characterised in that：The step 3) in regulation monitoring camera it is fast
Door parameter is 1/150-1/200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510967797.7A CN106899786A (en) | 2015-12-21 | 2015-12-21 | Monitor camera device and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510967797.7A CN106899786A (en) | 2015-12-21 | 2015-12-21 | Monitor camera device and its application method |
Publications (1)
| Publication Number | Publication Date |
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| CN106899786A true CN106899786A (en) | 2017-06-27 |
Family
ID=59190941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510967797.7A Pending CN106899786A (en) | 2015-12-21 | 2015-12-21 | Monitor camera device and its application method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106899786A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109104557A (en) * | 2018-09-26 | 2018-12-28 | 张子脉 | A kind of Vehicle Identify Number image collecting device and its method |
| CN110365891A (en) * | 2019-08-20 | 2019-10-22 | 惠州Tcl移动通信有限公司 | A kind of camera module and mobile terminal |
| CN111641789A (en) * | 2020-06-11 | 2020-09-08 | 云从科技集团股份有限公司 | Multi-camera system light supplement control method, device, equipment and medium |
| CN111988567A (en) * | 2020-08-17 | 2020-11-24 | 湖北众堃科技股份有限公司 | Railway unattended operation port all-dimensional high-definition monitoring system |
| CN114257751A (en) * | 2021-12-17 | 2022-03-29 | 航天信息股份有限公司 | Follow-up light filling system |
| CN116389898A (en) * | 2023-02-27 | 2023-07-04 | 荣耀终端有限公司 | Image processing method, device and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109104557A (en) * | 2018-09-26 | 2018-12-28 | 张子脉 | A kind of Vehicle Identify Number image collecting device and its method |
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| CN111641789A (en) * | 2020-06-11 | 2020-09-08 | 云从科技集团股份有限公司 | Multi-camera system light supplement control method, device, equipment and medium |
| CN111988567A (en) * | 2020-08-17 | 2020-11-24 | 湖北众堃科技股份有限公司 | Railway unattended operation port all-dimensional high-definition monitoring system |
| CN114257751A (en) * | 2021-12-17 | 2022-03-29 | 航天信息股份有限公司 | Follow-up light filling system |
| CN116389898A (en) * | 2023-02-27 | 2023-07-04 | 荣耀终端有限公司 | Image processing method, device and storage medium |
| CN116389898B (en) * | 2023-02-27 | 2024-03-19 | 荣耀终端有限公司 | Image processing method, device and storage medium |
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