CN105227840A - Focusing method and device - Google Patents
Focusing method and device Download PDFInfo
- Publication number
- CN105227840A CN105227840A CN201510648673.2A CN201510648673A CN105227840A CN 105227840 A CN105227840 A CN 105227840A CN 201510648673 A CN201510648673 A CN 201510648673A CN 105227840 A CN105227840 A CN 105227840A
- Authority
- CN
- China
- Prior art keywords
- time
- exposure
- focusing
- photosensitivity
- acquiescence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Studio Devices (AREA)
Abstract
The present invention relates to a kind of focusing method and device.Described method comprises step: when receiving focusing triggering command, the time for exposure under current focusing environment is foreshortened to the new time for exposure from the acquiescence time for exposure, and the photosensitivity under current focusing environment is increased to new photosensitivity from acquiescence photosensitivity; Focus according to described new time for exposure and described new photosensitivity.The present invention not only can improve the focusing speed of contrast formula focusing under half-light environment, can also improve the focusing speed of contrast formula focusing under light environment.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of focusing method and device.
Background technology
Along with the development of science and technology, mobile terminal, such as smart mobile phone etc., function is more and more diversified.The requirement of user to the camera function of mobile terminal is also more and more higher.When taking pictures, the mode of focusing has multiple, such as phase place focusing, the focusing of contrast formula and laser focusing etc.And the focusing of contrast formula is due to various advantages such as its cost are low, become the focusing method generally applied at present.
But under half-light environment, such as ISO (photosensibility, photosensitivity) >1000, the frame per second due to camera can become very low, general all about 10 frames, so focusing speed becomes slow when adopting the focusing of contrast formula.
Summary of the invention
Based on this, be necessary for the problems referred to above, a kind of focusing method and device are provided, can ensure all there is higher focusing speed at half-light environment and the focusing of light environment medium contrast formula.
In order to achieve the above object, the present invention adopts following scheme:
A kind of focusing method, comprises step:
When receiving focusing triggering command, the time for exposure under current focusing environment is foreshortened to the new time for exposure from the acquiescence time for exposure, and the photosensitivity under current focusing environment is increased to new photosensitivity from acquiescence photosensitivity;
Focus according to described new time for exposure and described new photosensitivity.
A kind of focusing mechanism, comprising:
Time and photosensitivity arrange module, for when receiving focusing triggering command, time for exposure under current focusing environment is foreshortened to the new time for exposure from the acquiescence time for exposure, and the photosensitivity under current focusing environment is increased to new photosensitivity from acquiescence photosensitivity;
Focusing module, for focusing according to described new time for exposure and described new photosensitivity.
Focusing method of the present invention and device, due in the process of focusing, that is to say from triggering focusing and complete this one-phase to focusing, user generally can not pay close attention to the preview effect of picture, so when focusing triggering, the acquiescence time for exposure is shortened, to improve the frame per second of camera, thus focusing speed can be improved.In addition in order to ensure the sensitive volume obtained, acquiescence ISO is drawn high simultaneously.The present invention not only can improve the focusing speed of contrast formula focusing under half-light environment, can also improve the focusing speed of contrast formula focusing under light environment.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of focusing method embodiment of the present invention;
Fig. 2 is the structural representation of focusing mechanism embodiment one of the present invention;
Fig. 3 is the structural representation that time of the present invention and photosensitivity arrange module embodiments one;
Fig. 4 is the structural representation that time of the present invention and photosensitivity arrange module embodiments two;
Fig. 5 is the structural representation of focusing mechanism embodiment two of the present invention.
Embodiment
The technical problem that will solve for a better understanding of the present invention, the technical scheme taked and the technique effect reached, be described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of focusing method, comprises step:
S110, receive focusing triggering command time, by the time for exposure under current focusing environment from acquiescence the time for exposure foreshorten to the new time for exposure, and by the photosensitivity under current focusing environment from acquiescence photosensitivity be increased to new photosensitivity;
S120, to focus according to described new time for exposure and described new photosensitivity.
The program realized according to described focusing method or chip etc. can be applied on mobile terminal.Due in the process of focusing, that is to say from triggering focusing and complete this one-phase to focusing, user generally can not pay close attention to the preview effect of picture, so when focusing triggering, the acquiescence time for exposure is shortened, to improve the frame per second of camera, thus focusing speed can be improved.In addition in order to ensure the sensitive volume obtained, acquiescence ISO is drawn high simultaneously.The inventive method not only can improve the focusing speed of contrast formula focusing under half-light environment, can also improve the focusing speed of contrast formula focusing under light environment.
The acquiescence time for exposure under different focus environment is general not identical with acquiescence photosensitivity, so, in one embodiment, when receiving focusing triggering command, before time for exposure under current focusing environment is foreshortened to the new time for exposure from the acquiescence time for exposure, can also step be comprised:
Detect current focusing environment, environment of wherein focusing comprises light environment and half-light environment;
Obtain the acquiescence time for exposure under corresponding focusing environment according to the result detected and give tacit consent to photosensitivity.
Acquiescence time for exposure under light environment and the acquiescence time for exposure under half-light environment are determined value, and such as, the acquiescence time for exposure under the light environment of certain camera is 0.5 second, and the time for exposure under half-light environment is 2 seconds.Equally, the acquiescence photosensitivity under light environment and the acquiescence photosensitivity under half-light environment are also determined value.Sensitive volume is the product of photosensitivity and time for exposure.Sensitive volume under sensitive volume under light environment and half-light environment can be equal, also can be unequal, and the present invention does not make restriction to this.
The acquiescence time for exposure specifically shortens and how much can arrange according to actual needs, and such as, in one embodiment, the time for exposure under current focusing environment is foreshortened to the step of new time for exposure from the acquiescence time for exposure can be comprised:
Time for exposure under current focusing environment is shortened to the default time for exposure from the acquiescence time for exposure;
Or,
From each time for exposure being less than the described acquiescence time for exposure, a time for exposure is chosen according to pre-conditioned;
Time for exposure under current focusing environment is shortened to from the acquiescence time for exposure the described time for exposure chosen.
The acquiescence time for exposure is shortened to the default time for exposure, is namely give tacit consent to the time for exposure to shorten to a fixing value, such as 1/30S (second) etc. at every turn.New time for exposure under light environment and the new time for exposure under half-light environment can be set respectively, also the new time for exposure under light environment and the new time for exposure under half-light environment can be set to a fixed value.The acquiescence time for exposure is shortened to the time for exposure chosen, then the degree at every turn giving tacit consent to time for exposure shortening may be different.User can arrange pre-conditioned by actual needs, and such as environment is darker, and the degree that the acquiescence time for exposure shortens is larger.
Because time for exposure and frame per second are inversely prroportional relationship, the shortening acquiescence time for exposure also just means that frame per second improves, such as, frame per second under existing half-light environment is that 10 frames are left back, time for exposure during focusing is shortened to 1/30S by the present invention, then frame per second will bring up to 30 frames, substantially increase the speed of focusing.
In order to ensure the sensitive volume obtained, when giving tacit consent to time for exposure shortening, what need correspondence draws high ISO.By acquiescence photosensitivity be increased to new photosensitivity method and above-mentioned by give tacit consent to the time for exposure foreshorten to the new time for exposure method class this, do not repeat them here.Although ISO draws high obviously can increase noise, but the process due to focusing is not natively effect very clearly, user generally also can not be concerned about the definition in focus process, even if so in the higher situation of ISO, such as ISO>2000, the present invention also shortens the time for exposure to improve frame per second, to improve focusing speed.
Due in order to improve focusing speed, the acquiescence time for exposure shortens by the present invention, and ISO draws high, so in order to not affect follow-up preview effect and imaging effect, in one embodiment, after step S120, can also comprise step:
When receiving focusing and completing instruction, the time for exposure is returned to the described acquiescence time for exposure from the described new time for exposure, and photosensitivity is returned to described acquiescence photosensitivity from described new photosensitivity.
When focusing completes, the numerical value before being reverted to new time for exposure and new photosensitivity, such as, has just started to focus under half-light environment, then new time for exposure and new photosensitivity are reverted to the acquiescence time for exposure under half-light environment and acquiescence photosensitivity.The inventive method, under the prerequisite not affecting follow-up preview effect and imaging effect, substantially increases focusing speed during focusing, brings better Consumer's Experience to user.
Based on same inventive concept, the present invention also provides a kind of focusing mechanism, is described in detail below in conjunction with the embodiment of accompanying drawing to apparatus of the present invention.
As shown in Figure 2, a kind of focusing mechanism, comprising:
Time and photosensitivity arrange module 110, for when receiving focusing triggering command, time for exposure under current focusing environment is foreshortened to the new time for exposure from the acquiescence time for exposure, and the photosensitivity under current focusing environment is increased to new photosensitivity from acquiescence photosensitivity;
Focusing module 120, for focusing according to described new time for exposure and described new photosensitivity.
Described focusing mechanism can be applied on mobile terminal.Due in the process of focusing, that is to say from triggering focusing and complete this one-phase to focusing, user generally can not pay close attention to the preview effect of picture, so when focusing triggering, the acquiescence time for exposure is shortened, to improve the frame per second of camera, thus focusing speed can be improved.In addition in order to ensure the sensitive volume obtained, acquiescence ISO is drawn high simultaneously.Apparatus of the present invention not only can improve the focusing speed of contrast formula focusing under half-light environment, can also improve the focusing speed of contrast formula focusing under light environment.
The acquiescence time for exposure under different focus environment is general not identical with acquiescence photosensitivity, so, in one embodiment, described time and photosensitivity arrange module 110 when receiving focusing triggering command, before time for exposure under current focusing environment is foreshortened to the new time for exposure from the acquiescence time for exposure, also for detecting current focusing environment, environment of wherein focusing comprises light environment and half-light environment; Obtain the acquiescence time for exposure under corresponding focusing environment according to the result detected and give tacit consent to photosensitivity.
Acquiescence time for exposure under light environment and the acquiescence time for exposure under half-light environment are determined value.Equally, the acquiescence photosensitivity under light environment and the acquiescence photosensitivity under half-light environment are also determined value.Sensitive volume is the product of photosensitivity and time for exposure, and the sensitive volume under the sensitive volume under light environment and half-light environment can be equal, also can be unequal, and the present invention does not make restriction to this.
In one embodiment, as shown in Figure 3, described time and photosensitivity arrange module 110 and can comprise:
First time for exposure setting unit 1101, for shortening to the default time for exposure by the time for exposure under current focusing environment from the acquiescence time for exposure;
Or as shown in Figure 4, in another embodiment, described time and photosensitivity arrange module 110 and can comprise:
Time for exposure chooses unit 1102, for choosing a time for exposure according to pre-conditioned from each time for exposure being less than the described acquiescence time for exposure;
Second time for exposure setting unit 1103, for shortening to from the acquiescence time for exposure the described time for exposure chosen by the time for exposure under current focusing environment.
The acquiescence time for exposure is shortened to the default time for exposure, is namely give tacit consent to the time for exposure to shorten to a fixing value at every turn.New time for exposure under light environment and the new time for exposure under half-light environment can be set respectively, also the new time for exposure under light environment and the new time for exposure under half-light environment can be set to a fixed value.The acquiescence time for exposure is shortened to the time for exposure chosen, then the degree at every turn giving tacit consent to time for exposure shortening may be different.User can arrange pre-conditioned by actual needs, and such as environment is darker, and the degree that the acquiescence time for exposure shortens is larger.
Because time for exposure and frame per second are inversely prroportional relationship, the shortening acquiescence time for exposure also just means that frame per second improves, such as, frame per second under existing half-light environment is that 10 frames are left back, time for exposure during focusing is shortened to 1/30S by the present invention, then frame per second will bring up to 30 frames, substantially increase the speed of focusing.
In order to ensure the sensitive volume obtained, give tacit consent to the time for exposure shorten time, time and photosensitivity arrange module 110 to be needed corresponding to draw high ISO.Time and photosensitivity arrange module 110 by acquiescence photosensitivity be increased to new photosensitivity mode and above-mentioned by give tacit consent to the time for exposure foreshorten to the new time for exposure mode class this, do not repeat them here.Although ISO draws high obviously can increase noise, but the process due to focusing is not natively effect very clearly, and user generally also can not be concerned about the definition in focus process, even if so in the higher situation of ISO, the present invention also shortens the time for exposure to improve frame per second, to improve focusing speed.
Due in order to improve focusing speed, the acquiescence time for exposure shortens by the present invention, ISO draws high, so in order to not affect follow-up preview effect and imaging effect, in one embodiment, as shown in Figure 5, apparatus of the present invention can also comprise time of being connected with described Focusing module 120 and photosensitivity recovers module 130, described time and photosensitivity recover module 130 for when receiving focusing and completing instruction, time for exposure is returned to the described acquiescence time for exposure from the described new time for exposure, and photosensitivity is returned to described acquiescence photosensitivity from described new photosensitivity.
When focusing completes, time and photosensitivity recover the numerical value before time for exposure and photosensitivity revert to by module 130, such as, just start to focus under half-light environment, then new time for exposure and new photosensitivity have been reverted to the acquiescence time for exposure under half-light environment and acquiescence photosensitivity.Apparatus of the present invention, under the prerequisite not affecting follow-up preview effect and imaging effect, substantially increase focusing speed during focusing, bring better Consumer's Experience to user.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a focusing method, is characterized in that, comprises step:
When receiving focusing triggering command, the time for exposure under current focusing environment is foreshortened to the new time for exposure from the acquiescence time for exposure, and the photosensitivity under current focusing environment is increased to new photosensitivity from acquiescence photosensitivity;
Focus according to described new time for exposure and described new photosensitivity.
2. focusing method according to claim 1, is characterized in that, after focusing, also comprises step according to described new time for exposure and described new photosensitivity:
When receiving focusing and completing instruction, the time for exposure is returned to the described acquiescence time for exposure from the described new time for exposure, and photosensitivity is returned to described acquiescence photosensitivity from described new photosensitivity.
3. focusing method according to claim 1, is characterized in that, when receiving focusing triggering command, before the time for exposure under current focusing environment is foreshortened to the new time for exposure from the acquiescence time for exposure, also comprises step:
Detect current focusing environment, environment of wherein focusing comprises light environment and half-light environment;
Obtain the acquiescence time for exposure under corresponding focusing environment according to the result detected and give tacit consent to photosensitivity.
4. focusing method according to claim 1, is characterized in that, the time for exposure under current focusing environment is foreshortened to the step of new time for exposure from the acquiescence time for exposure and comprises:
Time for exposure under current focusing environment is shortened to the default time for exposure from the acquiescence time for exposure;
Or,
From each time for exposure being less than the described acquiescence time for exposure, a time for exposure is chosen according to pre-conditioned;
Time for exposure under current focusing environment is shortened to from the acquiescence time for exposure the described time for exposure chosen.
5. the focusing method according to Claims 1-4 any one, is characterized in that, the program realized according to described focusing method or chip application are on mobile terminal.
6. a focusing mechanism, is characterized in that, comprising:
Time and photosensitivity arrange module, for when receiving focusing triggering command, time for exposure under current focusing environment is foreshortened to the new time for exposure from the acquiescence time for exposure, and the photosensitivity under current focusing environment is increased to new photosensitivity from acquiescence photosensitivity;
Focusing module, for focusing according to described new time for exposure and described new photosensitivity.
7. focusing mechanism according to claim 6, it is characterized in that, also comprise time of being connected with described Focusing module and photosensitivity recovers module, described time and photosensitivity are recovered module and are used for when receiving focusing and completing instruction, time for exposure is returned to the described acquiescence time for exposure from the described new time for exposure, and photosensitivity is returned to described acquiescence photosensitivity from described new photosensitivity.
8. focusing mechanism according to claim 6, it is characterized in that, described time and photosensitivity arrange module when receiving focusing triggering command, before time for exposure under current focusing environment is foreshortened to the new time for exposure from the acquiescence time for exposure, also for detecting current focusing environment, environment of wherein focusing comprises light environment and half-light environment; Obtain the acquiescence time for exposure under corresponding focusing environment according to the result detected and give tacit consent to photosensitivity.
9. focusing mechanism according to claim 6, is characterized in that, described time and photosensitivity arrange module and comprise:
First time for exposure setting unit, for shortening to the default time for exposure by the time for exposure under current focusing environment from the acquiescence time for exposure;
Or,
Time for exposure chooses unit, for choosing a time for exposure according to pre-conditioned from each time for exposure being less than the described acquiescence time for exposure;
Second time for exposure setting unit, for shortening to from the acquiescence time for exposure the described time for exposure chosen by the time for exposure under current focusing environment.
10. the focusing mechanism according to claim 6 to 9 any one, is characterized in that, described focusing mechanism is applied on mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510648673.2A CN105227840B (en) | 2015-10-08 | 2015-10-08 | Focusing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510648673.2A CN105227840B (en) | 2015-10-08 | 2015-10-08 | Focusing method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105227840A true CN105227840A (en) | 2016-01-06 |
| CN105227840B CN105227840B (en) | 2019-04-19 |
Family
ID=54996491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510648673.2A Active CN105227840B (en) | 2015-10-08 | 2015-10-08 | Focusing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105227840B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106060408A (en) * | 2016-07-29 | 2016-10-26 | 维沃移动通信有限公司 | Photographing method and mobile terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101686332A (en) * | 2008-09-24 | 2010-03-31 | 索尼株式会社 | Image capturing apparatus, control method thereof, and program |
| JP2013025132A (en) * | 2011-07-22 | 2013-02-04 | Nikon Corp | Focus adjustment device and imaging apparatus |
| CN103945119A (en) * | 2014-03-17 | 2014-07-23 | 广东明创软件科技有限公司 | Method for increasing focusing speed of camera based on mobile terminal and mobile terminal thereof |
| CN104796616A (en) * | 2015-04-27 | 2015-07-22 | 惠州Tcl移动通信有限公司 | Focusing method and focusing system based on distance sensor of mobile terminal |
-
2015
- 2015-10-08 CN CN201510648673.2A patent/CN105227840B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101686332A (en) * | 2008-09-24 | 2010-03-31 | 索尼株式会社 | Image capturing apparatus, control method thereof, and program |
| JP2013025132A (en) * | 2011-07-22 | 2013-02-04 | Nikon Corp | Focus adjustment device and imaging apparatus |
| CN103945119A (en) * | 2014-03-17 | 2014-07-23 | 广东明创软件科技有限公司 | Method for increasing focusing speed of camera based on mobile terminal and mobile terminal thereof |
| CN104796616A (en) * | 2015-04-27 | 2015-07-22 | 惠州Tcl移动通信有限公司 | Focusing method and focusing system based on distance sensor of mobile terminal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106060408A (en) * | 2016-07-29 | 2016-10-26 | 维沃移动通信有限公司 | Photographing method and mobile terminal |
| CN106060408B (en) * | 2016-07-29 | 2019-10-15 | 维沃移动通信有限公司 | A kind of photographic method and mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105227840B (en) | 2019-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102310430B1 (en) | Filming method, apparatus and device | |
| US9736391B2 (en) | Photographing method of dual-lens device, and dual-lens device | |
| US11138707B2 (en) | Electronic device and method for processing multiple images | |
| CN105187728B (en) | Photographic method and device | |
| CN104811620B (en) | A kind of focusing method and focusing system | |
| KR20150077646A (en) | Image processing apparatus and method | |
| CN104253939A (en) | Focusing position adjusting method and electronic device | |
| JP5888535B2 (en) | Imaging processing method and terminal device | |
| KR102124598B1 (en) | Image acquisition method and apparatus | |
| CN106454100B (en) | Focusing method, device and mobile terminal | |
| CN105578042A (en) | Image data transmission method and terminal | |
| CN104994274A (en) | Rapid photographing method based on mobile terminal and mobile terminal | |
| CN112087569B (en) | Camera and camera starting method and device | |
| CN104247412B (en) | Image processing apparatus, camera head, image processing method, record medium and program | |
| CN104793742A (en) | Shooting previewing method and device | |
| US20200029026A1 (en) | Photographing method and device based on two cameras | |
| CN104052911A (en) | Information processing method and electronic device | |
| CN108234880A (en) | A kind of image enchancing method and device | |
| US20150138076A1 (en) | Communication device and method of processing incoming call by facial image | |
| CN105528112B (en) | A kind of camera shooting focus adjustment method, system and mobile terminal based on mobile terminal | |
| US9288398B2 (en) | Action control device, action control method, imaging device, and program to reduce focus lag | |
| WO2017076045A1 (en) | Camera module fault detection method and device | |
| CN104170359B (en) | Implementation method of digital magnifier and mobile device | |
| US11283994B2 (en) | Synchronization mechanism for image capture and processing systems | |
| CN105227840A (en) | Focusing method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant after: OPPO Guangdong Mobile Communications Co., Ltd. Address before: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant before: Guangdong OPPO Mobile Communications Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |