CN105847693A - Shooting method and system based on two-camera focusing - Google Patents
Shooting method and system based on two-camera focusing Download PDFInfo
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- CN105847693A CN105847693A CN201610271029.2A CN201610271029A CN105847693A CN 105847693 A CN105847693 A CN 105847693A CN 201610271029 A CN201610271029 A CN 201610271029A CN 105847693 A CN105847693 A CN 105847693A
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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
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
-
- 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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- 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
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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- Engineering & Computer Science (AREA)
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- Studio Devices (AREA)
Abstract
The present invention discloses a shooting method and system based on two-camera focusing. The method comprises: focusing an object to be shot based on the regulated exposure value of a first camera, and obtaining a first focusing point; taking the first focusing point as the second focusing point of a second camera; and shooting the pair of the objects to be shot through the second camera based on the second focusing point. When one camera of a two-camera mobile phone is used for night shooting, when it is detected that the brightness value of the scene where the object to be shot is located is lower than a preset brightness value, the exposure value of the other one camera of the two-camera mobile phone is regulated, the other one camera of the two-camera mobile phone is able to focus in a bright scene, and the focusing point of the other one focused camera is taken as the focusing point of the camera, so that the camera is able to rapidly focus in a dark scene such as at night and the like, and therefore the shooting night scene in a real scene is realized, and the problems are avoided that the real scene of the night is overexposed or cannot be reflected caused by needing to open a flashlight.
Description
Technical field
The present invention relates to shooting technology field, particularly relate to a kind of photographic method based on dual camera focusing
And system.
Background technology
At present, based on mobile phone photograph, all can there is a process finding focus point.But in some scene
Under, at such as night, owing to scene is dark, camera cannot detect detailed information, would not go focusing,
And then cause the problem that speed is slow especially or cannot focus of focusing.Above-mentioned for prior art existence lacks
Fall into, the most good processing method.
Summary of the invention
It is an object of the invention to provide a kind of Dual-camera handset when taking pictures night, by regulation wherein
The exposure value of individual camera so that it is rapid focus, using to defocused focus point as another one camera
Focus point so that the method and system that another one camera can be taken pictures under real scene.
According to an aspect of the present invention, photographic method based on dual camera focusing, described method includes:
Exposure value based on the first camera after adjusting treats reference object focusing, obtains the first focus point；Will
Described first focus point is as the second focus point of second camera；Second camera gathers based on described second
Same object to be captured is taken pictures by focus.
Further, treat reference object focusing at described exposure value based on the first camera after adjusting,
Before obtaining the step of the first focus point, also include: detect described object to be captured by a certain camera
The brightness value of place scene；Judge the size of described brightness value and predetermined luminance value；When described figure to be captured
When sheet brightness value is less than predetermined luminance value, the exposure value of the first camera is heightened.
Further, the described step heightened by the exposure value of the first camera is: by described first camera
Exposure value increase preset multiple.
Further, the described multiple that the exposure value increase of described first camera is preset, particularly as follows: will
The exposure value of described first camera doubles.
Further, when described first camera is based on the exposure value focusing adjusted, focusing in accordance with the following methods:
Climbing method is used to focus.
Another aspect of the present invention, it is provided that a kind of camera system based on dual camera focusing, described system
System includes: Focusing module, treats reference object pair for exposure value based on the first camera after adjusting
Jiao, obtains the first focus point；Present convergence point acquisition module, takes the photograph described first focus point as second
The second focus point as head；Photo module, is used for making second camera same based on described second focus point
Treat reference object to take pictures.
Further, described system also includes: brightness value detection module, for being detected by a certain camera
The brightness value of described object place to be captured scene；Judge module, is used for judging described brightness value and presetting
The size of brightness value；Exposure value adjusting module, for being less than default bright when described picture luminance value to be captured
During angle value, the exposure value of the first camera is heightened.
Further, the exposure value of the first camera is heightened by described exposure value adjusting module, particularly as follows: will
The exposure value of described first camera increases the multiple preset.
Further, the described multiple that the exposure value increase of described first camera is preset, particularly as follows: will
The current exposure value of the first camera doubles.
Further, when described first camera is based on the exposure value focusing adjusted, focusing in accordance with the following methods:
Climbing method is used to focus.
As it has been described above, the present invention by one of them camera at Dual-camera handset when taking pictures night,
When the brightness value of object place to be captured scene is less than predetermined luminance value, then another in Dual-camera handset
The exposure value of an outer camera adjusts, and enables another one camera to focus in brighter scene,
And using the focus point after another one camera focusing as the focus point of this camera, make this camera energy
Enough under the dark scenes such as night, it is rapidly completed focusing, thus realizes shooting night scene in real scene,
Avoid the need for opening flash lamp cause overexposure or the problem of real scene at night can not be reflected.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the photographic method based on dual camera focusing of the present invention；
Fig. 2 is the structural representation of the camera system based on dual camera focusing of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention of greater clarity, below in conjunction with being embodied as
Mode referring to the drawings, the present invention is described in more detail.It should be understood that these describe simply example
Property, and it is not intended to limit the scope of the present invention.Additionally, in the following description, eliminate known knot
Structure and the description of technology, to avoid unnecessarily obscuring idea of the invention.
The application scenarios of the present invention is, when the photographed scene brightness values such as night are relatively low, based on dual camera
Mobile phone cannot focus or focus the slowest.
Wherein, camera is not limited by the first camera and second camera, and the first camera refers to double
A camera in camera mobile phone, second camera refers to another camera in Dual-camera handset.
When one of them camera needs to take pictures, just the exposure value of another one camera is increased, make additionally
One camera Same Scene brighter in the case of rapid focus, then right by another one camera
The focus point of the camera that the defocused focus point obtained is taken pictures as needs, so that this camera is based on this
Focus point completes focusing, and takes pictures.
Fig. 1 is the schematic flow sheet of the photographic method based on dual camera focusing of the present invention.
As it is shown in figure 1, photographic method based on dual camera focusing, comprise the following steps:
S1, detects the brightness value of object place to be captured scene by a certain camera；Here, a certain take the photograph
As head can be the first camera can also be second camera；
S2, it is judged that the brightness value of the object place to be captured scene detected by a certain camera with preset bright
The size of angle value；
S3, when the brightness value of detection is less than predetermined luminance value, heightens the exposure value of the first camera；
S4, exposure value based on the first camera after adjusting is treated reference object focusing, is obtained first and gather
Focus；
S5, using the first focus point as the second focus point of second camera；
S6, based on the second focus point, is taken pictures to same object to be captured by second camera.
Wherein, S3 also includes another kind of situation, i.e. when brightness value is more than or equal to predetermined luminance value, then
At this moment need not start second camera and the first camera is carried out auxiliary focusing, the first camera is the most right
Jiao, and the focus point obtained based on auto-focusing directly takes pictures；
Wherein, by the step that the exposure value of the first camera is heightened it is: the exposure value of the first camera is increased
Add default multiple.
In the specific implementation, need the camera taken pictures to can't detect object detail information when discovery and cause
When speed of cannot focusing or focus is slow especially, just can increase the current exposure value of the first camera, here
Current exposure value refer to mobile phone camera exposure value under normal photographing scene, after adjusting exposure value,
Adding the brightness value of the object place to be captured scene of the first camera, the first camera is at this brightness value
Under start focusing, if or cannot focus, then can continue to adjust the exposure value of the first camera, directly
To completing focusing, now, the focus point that the first camera focusing obtains after completing is as second camera
Focus point, second camera just can complete focusing based on this focus point, and take pictures.
Preferably, the exposure value of the first camera is increased the multiple preset, particularly as follows: image first
The exposure value of head doubles.
Wherein, when the first camera is based on the exposure value focusing adjusted, focusing in accordance with the following methods: use
Climbing method is focused.
Specifically, climbing method is to find definition based on FV (Focus Value, focus value) curve
High pixel is as focus point.Detailed process is the focusing of the upper width picture shot by this camera
As starting point, first FV curve carries out coarse scan with interval delta x, find the general model at focus point place
The one section of curve enclosed, more carefully sweep with the interval less than Δ x in this section of curve, definition is the highest
Pixel is as focus point.
As in figure 2 it is shown, camera system based on dual camera focusing, including:
Brightness value detection module 10, for detecting the bright of object place to be captured scene by a certain camera
Angle value；Here, a certain camera can be the first camera can also be second camera；
Judge module 11, bright for the object place to be captured scene that judges to be detected by a certain camera
Angle value and the size of predetermined luminance value；
Exposure value adjusting module 12, for when the brightness value of detection is less than predetermined luminance value, taking the photograph first
As the exposure value of head is heightened；
Focusing module 13, treats reference object pair for exposure value based on the first camera after adjusting
Jiao, obtains the first focus point；
Present convergence point acquisition module 14, using the first focus point as the second focus point of second camera；
Photo module 15, for based on the second focus point, by second camera to same object to be captured
Take pictures.
Wherein, it is judged that module 11 is more than at the brightness value judging the object place to be captured scene detected
Or during equal to predetermined luminance value, the most at this moment need not start second camera and the first camera is assisted
Focusing, the first camera auto-focusing, and the focus point obtained based on auto-focusing are directly taken pictures；
Wherein, the exposure value of the first camera is heightened by exposure value adjusting module, particularly as follows: take the photograph first
As the exposure value of head increases the multiple preset.
In the specific implementation, need the camera taken pictures to can't detect object detail information when discovery and cause
When speed of cannot focusing or focus is slow especially, just can increase the current exposure value of the first camera, here
Current exposure value refer to mobile phone camera exposure value under normal photographing scene, after adjusting exposure value,
Adding the brightness value of the object place to be captured scene of the first camera, the first camera is at this brightness value
Under start focusing, if or cannot focus, then can continue to adjust the exposure value of the first camera, directly
To completing focusing, now, the focus point that the first camera focusing obtains after completing is as second camera
Focus point, second camera just can complete focusing based on this focus point, and take pictures.
Wherein, the exposure value of the first camera is increased the multiple preset, particularly as follows: by the first camera
Current exposure value double.
Wherein, exposure value based on the first camera after adjusting treats reference object focusing, according to following
Method is focused:
Climbing method is used to focus.
Specifically, climbing method is to find definition based on FV (Focus Value, focus value) curve
High pixel is as focus point.Detailed process is the focusing of the upper width picture shot by this camera
As starting point, first FV curve carries out coarse scan with interval delta x, find the general model at focus point place
The one section of curve enclosed, more carefully sweep with the interval less than Δ x in this section of curve, definition is the highest
Pixel is as focus point.
It should be appreciated that the above-mentioned detailed description of the invention of the present invention is used only for exemplary illustration or explanation
The principle of the present invention, and be not construed as limiting the invention.Therefore, without departing from the present invention spirit and
Any modification, equivalent substitution and improvement etc. done in the case of scope, should be included in the guarantor of the present invention
Within the scope of protecting.Additionally, claims of the present invention be intended to fall into scope and
Whole in the equivalents on border or this scope and border change and modifications example.
Claims (10)
1. photographic method based on dual camera focusing, described method includes:
Exposure value based on the first camera after adjusting treats reference object focusing, obtains the first focusing
Point；
Using described first focus point as the second focus point of second camera；
Based on described second focus point, by second camera, same reference object for the treatment of is taken pictures.
The most according to claim 1, photographic method based on dual camera focusing, wherein, described
Exposure value based on the first camera after adjusting treats reference object focusing, obtains the first focus point
Before step, also include:
The brightness value of described object place to be captured scene is detected by a certain camera；
Judge the size of described brightness value and predetermined luminance value；
When described brightness value is less than predetermined luminance value, the exposure value of the first camera is heightened.
Photographic method based on dual camera focusing the most according to claim 2, wherein, described general
The step that the exposure value of the first camera is heightened is:
The exposure value of described first camera is increased the multiple preset.
Photographic method based on dual camera focusing the most according to claim 3, wherein, described general
The exposure value of described first camera increases the multiple preset, particularly as follows:
The exposure value of described first camera is doubled.
5. according to photographic method based on dual camera focusing described in any one of claim 1-4, wherein,
When described exposure value based on the first camera after adjusting treats reference object focusing, according to lower section
Method is focused:
Climbing method is used to focus.
6. camera system based on dual camera focusing, described system includes:
Focusing module (13), for exposure value based on the first camera after adjusting to be captured right
As focusing, obtain the first focus point；
Present convergence point acquisition module (14), using described first focus point as the of second camera
Two focus points；
Photo module (15), for based on described second focus point, by second camera to same
Object to be captured is taken pictures.
The most according to claim 6, camera system based on dual camera focusing, wherein, also include:
Brightness value detection module (10), for detecting described object institute to be captured by a certain camera
Brightness value in scene；
Judge module (11), for judging the size of described brightness value and predetermined luminance value；
Exposure value adjusting module (12), for when described brightness value is less than predetermined luminance value, by the
The exposure value of one camera is heightened.
Camera system based on dual camera focusing the most according to claim 7, wherein, described exposure
The exposure value of the first camera is heightened by light value adjusting module, particularly as follows:
The exposure value of described first camera is increased the multiple preset.
Camera system based on dual camera focusing the most according to claim 8, wherein, described general
The exposure value of described first camera increases the multiple preset, particularly as follows:
The current exposure value of the first camera is doubled.
10. according to camera system based on dual camera focusing described in any one of claim 6-9, its
In, described exposure value based on the first camera after adjusting treats reference object focusing, according to following
Method is focused:
Climbing method is used to focus.
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| CN201610271029.2A CN105847693A (en) | 2016-04-27 | 2016-04-27 | Shooting method and system based on two-camera focusing |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106161960A (en) * | 2016-08-26 | 2016-11-23 | 曾美枝 | Photographic method and device |
| CN106226976A (en) * | 2016-09-22 | 2016-12-14 | 宇龙计算机通信科技(深圳)有限公司 | A kind of dual camera image pickup method, system and terminal |
| CN106254682A (en) * | 2016-09-22 | 2016-12-21 | 维沃移动通信有限公司 | A kind of photographic method and mobile terminal |
| CN106454124A (en) * | 2016-11-28 | 2017-02-22 | 努比亚技术有限公司 | Dual camera-based focusing apparatus and method |
| CN106506939A (en) * | 2016-10-12 | 2017-03-15 | 成都西纬科技有限公司 | A kind of image collecting device and acquisition method |
| CN106534696A (en) * | 2016-11-29 | 2017-03-22 | 努比亚技术有限公司 | Focusing apparatus and method |
| CN106572311A (en) * | 2016-11-11 | 2017-04-19 | 努比亚技术有限公司 | Shooting apparatus and method thereof |
| CN106878621A (en) * | 2017-04-19 | 2017-06-20 | 宇龙计算机通信科技(深圳)有限公司 | Double-camera photographing method and device |
| CN107071243A (en) * | 2017-03-09 | 2017-08-18 | 成都西纬科技有限公司 | Camera focus calibration system and focus calibration method |
| CN107124535A (en) * | 2017-04-19 | 2017-09-01 | 宇龙计算机通信科技(深圳)有限公司 | Double-camera photographing method and device |
| WO2018053909A1 (en) * | 2016-09-26 | 2018-03-29 | 宇龙计算机通信科技(深圳)有限公司 | Photographic method, photographic device, and terminal |
| CN109995970A (en) * | 2017-12-30 | 2019-07-09 | 陈啸 | Utilize the method for front camera control rear camera focusing |
| CN110225248A (en) * | 2019-05-29 | 2019-09-10 | Oppo广东移动通信有限公司 | Image-pickup method and device, electronic equipment, computer readable storage medium |
| US10447916B2 (en) | 2016-11-29 | 2019-10-15 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Dual-camera focusing method and apparatus, and terminal device |
| CN109120839B (en) * | 2017-06-23 | 2020-10-16 | 华为技术有限公司 | Focusing method of double cameras and terminal |
| CN112672069A (en) * | 2020-12-24 | 2021-04-16 | 维沃移动通信有限公司 | Exposure method and apparatus |
| CN112740650A (en) * | 2018-09-21 | 2021-04-30 | Lg伊诺特有限公司 | Image pickup apparatus |
| CN113177426A (en) * | 2021-05-20 | 2021-07-27 | 浙江大华技术股份有限公司 | Two-dimensional code detection method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106161960A (en) * | 2016-08-26 | 2016-11-23 | 曾美枝 | Photographic method and device |
| CN106226976A (en) * | 2016-09-22 | 2016-12-14 | 宇龙计算机通信科技(深圳)有限公司 | A kind of dual camera image pickup method, system and terminal |
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| CN106572311A (en) * | 2016-11-11 | 2017-04-19 | 努比亚技术有限公司 | Shooting apparatus and method thereof |
| CN106454124A (en) * | 2016-11-28 | 2017-02-22 | 努比亚技术有限公司 | Dual camera-based focusing apparatus and method |
| CN106534696A (en) * | 2016-11-29 | 2017-03-22 | 努比亚技术有限公司 | Focusing apparatus and method |
| US10447916B2 (en) | 2016-11-29 | 2019-10-15 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Dual-camera focusing method and apparatus, and terminal device |
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| CN106878621A (en) * | 2017-04-19 | 2017-06-20 | 宇龙计算机通信科技(深圳)有限公司 | Double-camera photographing method and device |
| CN107124535A (en) * | 2017-04-19 | 2017-09-01 | 宇龙计算机通信科技(深圳)有限公司 | Double-camera photographing method and device |
| CN109120839B (en) * | 2017-06-23 | 2020-10-16 | 华为技术有限公司 | Focusing method of double cameras and terminal |
| CN109995970A (en) * | 2017-12-30 | 2019-07-09 | 陈啸 | Utilize the method for front camera control rear camera focusing |
| CN112740650A (en) * | 2018-09-21 | 2021-04-30 | Lg伊诺特有限公司 | Image pickup apparatus |
| US11575821B2 (en) | 2018-09-21 | 2023-02-07 | Lg Innotek Co., Ltd. | Camera device having first and second cameras, and method of operating same |
| CN112740650B (en) * | 2018-09-21 | 2024-03-05 | Lg伊诺特有限公司 | Image pickup apparatus |
| CN110225248A (en) * | 2019-05-29 | 2019-09-10 | Oppo广东移动通信有限公司 | Image-pickup method and device, electronic equipment, computer readable storage medium |
| CN110225248B (en) * | 2019-05-29 | 2021-11-16 | Oppo广东移动通信有限公司 | Image acquisition method and device, electronic equipment and computer readable storage medium |
| CN112672069A (en) * | 2020-12-24 | 2021-04-16 | 维沃移动通信有限公司 | Exposure method and apparatus |
| CN113177426A (en) * | 2021-05-20 | 2021-07-27 | 浙江大华技术股份有限公司 | Two-dimensional code detection method and device |
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