CN109151315A - A kind of focus adjustment method and device of DVS camera module - Google Patents
A kind of focus adjustment method and device of DVS camera module Download PDFInfo
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- CN109151315A CN109151315A CN201811094738.3A CN201811094738A CN109151315A CN 109151315 A CN109151315 A CN 109151315A CN 201811094738 A CN201811094738 A CN 201811094738A CN 109151315 A CN109151315 A CN 109151315A
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- camera module
- dvs
- dvs camera
- display device
- adjustment method
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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
- H04N23/67—Focus control based on electronic image sensor signals
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
The present invention provides the focus adjustment methods and device of a kind of DVS camera module, method includes the following steps: providing a display device with refreshing frequency, show detection figure by the display device；Adjust the output frame rate simultaneously shot detection figure consistent with the refreshing frequency of display device of the DVS camera module, output imaging picture；The camera lens of the DVS camera module is adjusted according to the imaging picture.The present invention is by providing a display device display detection figure with refreshing frequency；Adjust the output frame rate simultaneously shot detection figure consistent with the refreshing frequency of display device of the DVS camera module, output imaging picture；Since detection figure is shown by the display device with refreshing frequency, it is dynamic scene for DVS camera module, so that the output frame rate of the DVS camera module is consistent with the refreshing frequency of display device, the imaging picture of needs can be got, effectively so as to which effectively the camera lens of the DVS camera module is adjusted according to imaging picture.
Description
Technical field
The present invention relates to field of camera technology, more particularly to the focus adjustment method and device of a kind of DVS camera module.
Background technique
DVS imaging sensor (dynamic visual sensor) is a kind of novel imaging sensor, with traditional CMOS or CCD
Sensor is different, and whether at any time DVS imaging sensor observes the light intensity of each pixel according to scene illumination change intensity size
Between have subtle variation, by intensity of illumination change so that contrast variation be more than given threshold pixel be read out with it is defeated
Out, DVS image is generated.
Camera module needs focus according to application scenarios in the production process, so as to obtain in the application
Take ideal shooting picture.The existing focus adjustment method for the camera module using CMOS or CDD sensor is all first to shoot
One static article or detection picture, become imaging picture, and camera lens is being adjusted according to indexs such as the clarity that picture is imaged
At a distance from imaging sensor.But since DVS imaging sensor can only identify that dynamic scene, existing focus adjustment method obtain
It takes less than imaging picture, is not applied for the focusing operation of the DVS camera module using DVS imaging sensor.How conveniently to have
The focusing of the realization DVS camera module of effect becomes a technical issues that need to address.
Summary of the invention
Technical problem to be solved by the invention is to provide the focus adjustment method and device of a kind of DVS camera module, Neng Goufang
Just the focusing of DVS camera module is effectively realized, and easy to operate, it is at low cost.
In order to solve the above technical problems, the present invention provides a kind of focus adjustment method of DVS camera module, including following step
It is rapid: a display device with refreshing frequency being provided, detection figure is shown by the display device；Adjust the DVS camera shooting mould
The output frame rate of group is consistent with the refreshing frequency of the display device and picture is imaged in shot detection figure, output；According to it is described at
As camera lens of the picture to the DVS camera module is adjusted.
As a preferred solution of the present invention, the detection figure is black and white trrellis diagram.
As a preferred solution of the present invention, the output imaging picture is that picture will be imaged to export to focusing display
On, and shown by display of focusing.
As a preferred solution of the present invention, further include setting teleconverter, DVS is simulated by the teleconverter and images mould
The applications distances of group.
As a preferred solution of the present invention, the teleconverter is set between the display device and DVS camera module,
And the DVS camera module, teleconverter and display device are located along the same line.
As a preferred solution of the present invention, distance of the DVS camera module apart from the teleconverter is 2cm.
As a preferred solution of the present invention, the applications distances of the teleconverter simulation are 3m or 5m.
As a preferred solution of the present invention, the display device is liquid crystal display device.
Further, a kind of focus control for DVS camera module is provided, for realizing above-described DVS camera shooting
The focus adjustment method of mould group, comprising:
Display device, with refreshing frequency, for showing detection figure；
Focus display, for DVS camera module communication connection and show imaging picture；
Fixed board, for fixing display device and DVS camera module.
It as a preferred solution of the present invention, further include being set to straight line between the display device and DVS camera module
On teleconverter, the teleconverter is used to simulate the applications distances of DVS camera module.
The present invention has the following technical effect that the present invention provides the focus adjustment method and device of a kind of DVS camera module, leads to
It crosses and a display device display detection figure with refreshing frequency is provided；Adjust output frame rate and the display of the DVS camera module
The refreshing frequency of device is consistent and picture is imaged in shot detection figure, output；According to the imaging picture to the DVS camera module
Camera lens be adjusted.In this way, constantly being brushed since detection figure is shown by the display device with refreshing frequency
New detection figure is dynamic scene for DVS camera module, then makes the output frame rate of the DVS camera module
Consistent with the refreshing frequency of display device, the image of such DVS camera module output is not just flashing state occur, so as to
The imaging picture of needs is got, effectively so as to effectively according to the imaging picture got to the DVS camera module
Camera lens is adjusted.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of the focus adjustment method for DVS camera module that the embodiment of the present invention one provides；
Fig. 2 is a kind of schematic diagram for detection figure that the embodiment of the present invention one provides；
Fig. 3 is a kind of arrangement schematic diagram of teleconverter provided by Embodiment 2 of the present invention.
Specific embodiment
To make the purpose of the present invention, technical solution and advantage are clearer, with reference to the accompanying drawing to embodiment of the present invention
It is described in further detail.Obviously, described embodiment is a part of the embodiments of the present invention, rather than whole implementation
Example.Based on described the embodiment of the present invention, those of ordinary skill in the art are obtained under the premise of being not necessarily to creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Unless otherwise defined, the technical term or scientific term that the present invention uses should be tool in fields of the present invention
The ordinary meaning for thering is the personage of general technical ability to be understood." first ", " second " used in the present invention and similar word are simultaneously
Any sequence, quantity or importance are not indicated, and are used only to distinguish different component parts.
Embodiment one
As shown in Figure 1, present embodiments providing a kind of focus adjustment method of DVS camera module.The focusing of the DVS camera module
Method passes through the display device and shows detection figure the following steps are included: display device of the offer one with refreshing frequency；Adjustment
The output frame rate of the DVS camera module is consistent with the refreshing frequency of display device and picture is imaged in shot detection figure, output；Root
The camera lens of the DVS camera module is adjusted according to the imaging picture.
In this way, since detection figure is shown by the display device with refreshing frequency, the inspection constantly refreshed
Mapping is dynamic scene for DVS camera module, then makes output frame rate and the display of the DVS camera module
The refreshing frequency of device is consistent, and the image of such DVS camera module output is not just flashing state occur, so as to effectively obtain
Get the imaging picture of needs, so as to effectively according to the imaging picture got to the camera lens of the DVS camera module into
Row is adjusted；Moreover, realizing the dynamic scene when shooting of DVS camera module, a side by the display device with refreshing frequency
Face setting is simple, facilitates arrangement, at low cost, on the other hand can effectively show detection figure, facilitates imaging, obtains imaging picture,
It can effectively realize that the camera lens to the DVS camera module is adjusted.
Specifically, in the present embodiment, the display device with refreshing frequency can be liquid crystal display device, refresh frequency
Rate can be 50HZ or 60HZ；Liquid crystal display device can be the liquid crystal display device of included controller and memory, in this way, can
It is input in liquid crystal display device and makes will test figure by the various ways such as wireless, wire transmission or storage dish transmission
Liquid crystal display device display detection figure；Certainly, liquid crystal display device may be the liquid crystal display of not tape controller and memory
Device, in this way, the external control host for being stored with detection figure can be connected liquid crystal display dress by wired or wireless mode
It sets and liquid crystal display device is made to show detection figure；Specifically, liquid crystal display device can be fixed on workbench or falsework
The stabilization of upper holding position.
Specifically, as shown in Fig. 2, the detection figure can be black and white trrellis diagram, such detection figure is with uniformity, side
Just it compares and guarantees the consistency of focusing result, and black and white trrellis diagram is used to scheme as detection, can also effectively facilitate adjusting
Judge whether to adjust in place when the camera lens of DVS camera module.
Specifically, after fixing display device, corresponding DVS camera module can be fixed, certainly, DVS takes the photograph
As the fixation of mould group then can also determine display device according to the position of DVS camera module prior to the fixation of display device
Position allows DVS camera module effectively to take the detection figure that display device is shown and is imaged.Specifically, described defeated
Imaging picture is that picture will be imaged to export to focusing display, and shown by display of focusing, display of focusing out
The communication connection with DVS camera module can be realized by wired or wireless connection, in this way, effectively convenient in operation of focusing
The display of imaging picture is carried out in time；To effectively facilitate according to the imaging picture to the camera lens of the DVS camera module into
Row is adjusted.
Specifically, in the present embodiment, the camera lens of the DVS camera module is adjusted according to the imaging picture can
To be adjusted according to the clarity of imaging picture, i.e., when imaging picture is unintelligible, to be carried out using the method gradually approached
Adjustment determines a focusing direction, so that camera lens is forced close or remote from imaging sensor, if the result of adjustment tends to clear,
Continue to adjust, until obtaining blur-free imaging picture；If the result of adjustment tends to unintelligible, it is adjusted using opposite direction, directly
To acquisition blur-free imaging picture；It is of course also possible to be to be compared according to the position of the identification point of imaging picture with predeterminated position,
Then determine that adjusting direction is adjusted, until position is overlapped.Preferably, when use black and white strip figure as shown in Figure 2 as
, can whether consistent by judging the width of each striped on black and white strip figure when detection figure, thus whether in place as focusing
Standard, in this way, effectively facilitating focusing operation.About according to the imaging picture to the camera lens of the DVS camera module into
Row is adjusted to the content of the prior art, and the present invention is not limited thereto, as long as DVS camera module can be realized according to imaging picture
Focusing operation.
Embodiment two
The present embodiment is identical as previous embodiment principle, and structure is similar, and difference is only that, DVS provided in this embodiment
The focus adjustment method of camera module further include setting teleconverter 2, by the teleconverter 2 simulate DVS camera module 1 application away from
From.Specifically, as shown in figure 3, the teleconverter 2 is set between the display device 3 and DVS camera module 1, and the DVS
Camera module 1, teleconverter 2 and display device 3 are located along the same line.Specifically, the DVS camera module 1 is apart from the increasing
Distance away from mirror 2 is 2cm.The applications distances that the teleconverter 2 is simulated are 3m or 5m.In this way, be provided with after teleconverter 2, it can
The applications distances needed in practical application scene effectively to simulate DVS camera module 1, to more efficiently guarantee to adjust
Close-burning fruit.
Embodiment three
A kind of focus control for DVS camera module is present embodiments provided, can be used to implement above embodiments institute
The adjusting method for the DVS camera module stated, comprising:
Display device, with refreshing frequency, for showing detection figure；
Focus display, for DVS camera module communication connection and show imaging picture；
Fixed board, for fixing display device and DVS camera module.
It specifically, further include set on the teleconverter between the display device and DVS camera module on straight line, the increment
Mirror is used to simulate the applications distances of DVS camera module.
In this way, carrying out the focusing of DVS camera module using the focus control provided in this embodiment for DVS camera module
Display device, teleconverter DVS camera module to be focused can be first fixed on board by operation respectively, so that DVS images mould
Group can effectively take the detection figure that display device is shown and is imaged, and will focusing display and the communication of DVS camera module
Connection；Then detection figure is shown by display device, adjusts the output frame rate of DVS camera module and the refreshing frequency of display device
Consistent and shot detection figure, output imaging picture to display of focusing；So as to effectively be shown according to the focusing display
Imaging picture the camera lens of the DVS camera module is adjusted.
In this way, since detection figure is shown by the display device with refreshing frequency, the inspection constantly refreshed
Mapping is dynamic scene for DVS camera module, then makes output frame rate and the display of the DVS camera module
The refreshing frequency of device is consistent, and the image of such DVS camera module output is not just flashing state occur, so as to effectively obtain
Get the imaging picture of needs, so as to effectively according to the imaging picture got to the camera lens of the DVS camera module into
Row is adjusted；Moreover, realizing the dynamic scene when shooting of DVS camera module, a side by the display device with refreshing frequency
Face setting is simple, facilitates arrangement, at low cost, on the other hand can effectively show detection figure, facilitates imaging, obtains imaging picture,
It can effectively realize that the camera lens to the DVS camera module is adjusted.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as, as long as skill obtained in the form of equivalent substitutions or equivalent transformations
Art scheme should all be fallen within the scope and spirit of the invention.
Claims (10)
1. a kind of focus adjustment method of DVS camera module, which comprises the following steps: providing one has refreshing frequency
Display device shows detection figure by the display device；The output frame rate and the display for adjusting the DVS camera module fill
The refreshing frequency set is consistent and picture is imaged in shot detection figure, output；According to the imaging picture to the DVS camera module
Camera lens is adjusted.
2. the focus adjustment method of DVS camera module according to claim 1, which is characterized in that the detection figure is black and white item
Trrellis diagram.
3. the focus adjustment method of DVS camera module according to claim 1, which is characterized in that the output is imaged picture and is
Imaging picture is exported to focusing display, and is shown by display of focusing.
4. the focus adjustment method of DVS camera module according to claim 1, which is characterized in that further include setting teleconverter, lead to
Cross the applications distances of the teleconverter simulation DVS camera module.
5. the focus adjustment method of DVS camera module according to claim 4, which is characterized in that the teleconverter is set to described
Between display device and DVS camera module, and the DVS camera module, teleconverter and display device are located along the same line.
6. the focus adjustment method of DVS camera module according to claim 4, which is characterized in that the DVS camera module distance
The distance of the teleconverter is 2cm.
7. the focus adjustment method of DVS camera module according to claim 5, which is characterized in that the teleconverter simulation is answered
It is 3m or 5m with distance.
8. the focus adjustment method of DVS camera module according to claim 1, which is characterized in that the display device is liquid crystal
Display device.
9. a kind of focus control for DVS camera module, which is characterized in that for realizing DVS described in claim 1 camera shooting
The focus adjustment method of mould group, comprising:
Display device, with refreshing frequency, for showing detection figure；
Focus display, for DVS camera module communication connection and show imaging picture；
Fixed board, for fixing display device and DVS camera module.
10. the focus control according to claim 9 for DVS camera module, which is characterized in that further include set on described
Teleconverter between display device and DVS camera module on straight line, the teleconverter be used for simulate DVS camera module application away from
From.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811094738.3A CN109151315A (en) | 2018-09-19 | 2018-09-19 | A kind of focus adjustment method and device of DVS camera module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811094738.3A CN109151315A (en) | 2018-09-19 | 2018-09-19 | A kind of focus adjustment method and device of DVS camera module |
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| Publication Number | Publication Date |
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| CN109151315A true CN109151315A (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811094738.3A Withdrawn CN109151315A (en) | 2018-09-19 | 2018-09-19 | A kind of focus adjustment method and device of DVS camera module |
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Cited By (6)
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| CN113615161A (en) * | 2019-03-27 | 2021-11-05 | 索尼集团公司 | Object detection device, object detection system, and object detection method |
| WO2021228463A1 (en) * | 2020-05-14 | 2021-11-18 | Sony Group Corporation | Autofocus imaging circuitry, autofocus imaging apparatus, and autofocus imaging method for an event camera |
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- 2018-09-19 CN CN201811094738.3A patent/CN109151315A/en not_active Withdrawn
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| CN113615161A (en) * | 2019-03-27 | 2021-11-05 | 索尼集团公司 | Object detection device, object detection system, and object detection method |
| CN114567725A (en) * | 2019-10-17 | 2022-05-31 | 电装波动株式会社 | Imaging device with event camera |
| JP2021067704A (en) * | 2019-10-17 | 2021-04-30 | 株式会社デンソーウェーブ | Imaging device |
| EP3809692A3 (en) * | 2019-10-17 | 2021-06-30 | Denso Wave Incorporated | Imaging device provided with event-based camera |
| CN112689082A (en) * | 2019-10-17 | 2021-04-20 | 电装波动株式会社 | Imaging device with event camera |
| US11412127B2 (en) | 2019-10-17 | 2022-08-09 | Denso Wave Incorporated | Imaging device provided with event-based camera |
| JP7327075B2 (en) | 2019-10-17 | 2023-08-16 | 株式会社デンソーウェーブ | Imaging device |
| US11812145B2 (en) | 2019-10-17 | 2023-11-07 | Denso Wave Incorporated | Imaging device provided with event-based camera |
| CN114567725B (en) * | 2019-10-17 | 2024-03-05 | 电装波动株式会社 | Image pickup apparatus having event camera |
| JP2021067911A (en) * | 2019-10-28 | 2021-04-30 | 株式会社デンソーウェーブ | Imaging device |
| JP7427912B2 (en) | 2019-10-28 | 2024-02-06 | 株式会社デンソーウェーブ | Imaging device |
| WO2021228463A1 (en) * | 2020-05-14 | 2021-11-18 | Sony Group Corporation | Autofocus imaging circuitry, autofocus imaging apparatus, and autofocus imaging method for an event camera |
| US12137287B2 (en) | 2020-05-14 | 2024-11-05 | Sony Group Corporation | Autofocus imaging circuitry, autofocus imaging apparatus, and autofocus imaging method for an event camera |
| CN115134516A (en) * | 2021-03-29 | 2022-09-30 | 北京小米移动软件有限公司 | Shooting method and device |
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