CN108174117A - Eliminate method, system and the mobile terminal and medium product of flicker - Google Patents
Eliminate method, system and the mobile terminal and medium product of flicker Download PDFInfo
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- CN108174117A CN108174117A CN201810002951.0A CN201810002951A CN108174117A CN 108174117 A CN108174117 A CN 108174117A CN 201810002951 A CN201810002951 A CN 201810002951A CN 108174117 A CN108174117 A CN 108174117A
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- flicker
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Abstract
The invention discloses a kind of method, system and mobile terminal for eliminating flicker, this method includes the following steps：Mobile terminal opens camera, into high light sensing mode；Detect current environment light, if the flicker frequency for detecting current environment light is M HZ, 40 ＜ M ＜ 100HZ, and time for exposure T is less than a flicker cycle 2/M of current environment light, then the instruction of switching light sensing mode is sent out to mobile terminal；After mobile terminal receives instruction, low light sensing mode is switched to, extends N times of time for exposure in the case where ensureing that brightness is identical, the integral multiple that the time for exposure is flicker cycle is then adjusted, eliminates flicker.The present invention uses high light sensing mode under normal circumstances, once algorithm detects that current flicker frequency and time for exposure are less than flicker cycle, switch to low light sensing mode, so as to elongate the time for exposure, the integral multiple of flicker cycle is made, so as to overcome the problems, such as to cause due to the time for exposure is too short flicker can not eliminate.
Description
Technical field
The present invention relates to communication terminal technology field, more specifically, be related to a kind of method for eliminating flicker, system and
Mobile terminal and medium product.
Background technology
Present mobile terminal (such as mobile phone) camera is substantially all using CMOS (Complementary Metal
Oxide Semiconductor) sensor, upon exposure between when be not the integral multiple in light flash period, will produce
Raw flicker, that is, Hz noise, by AFD and AEC algorithms, mobile terminal is able to detect that current light flash frequency
(generally 50HZ/60HZ), flickers by adjusting the time for exposure to meet above-mentioned condition to eliminate.
But above-mentioned technical proposal still can't resolve a problem：I.e. current environment brightness is very high, causes the time for exposure special
When not short, for example current light source is 50HZ, its flicker cycle is 0.01s, once the time for exposure is less than 0.01s
When, it is then not possible to meet the condition of integral multiple again, the flicker of this when can not just eliminate.
Invention content
It is an object of the invention to overcome drawbacks described above of the prior art, a kind of method for eliminating flicker, system are provided
And mobile terminal.
To achieve the above object, technical solution provided by the invention is as follows：A kind of method for eliminating flicker, this method include
Following steps：
Mobile terminal opens camera, into high light sensing mode；
Current environment light is detected, if the flicker frequency for detecting current environment light is M HZ, 40 ＜ M ＜ 100HZ, and
Time for exposure T is less than a flicker cycle 2/M of current environment light, then the instruction of switching light sensing mode is sent out to mobile terminal；
After mobile terminal receives instruction, low light sensing mode is switched to, extends N times in the case where ensureing that brightness is identical
Then time for exposure adjusts the integral multiple that the time for exposure is flicker cycle, flicker is eliminated when ensureing that brightness is constant.
As preference, open camera, the step of high light sensing mode in, the mobile terminal branch in mobile terminal
Hold both of which：High light sensing mode and low light sensing mode, the flicker cycle of the high light sensing mode are set as low light sensing mode and dodge
N times of bright period.
As preference, in detection current environment light, if the flicker frequency for detecting current environment light is M HZ, 40 ＜
M ＜ 100HZ, and time for exposure T is less than a flicker cycle 2/M of current environment light, then sends out switching sense to mobile terminal
In the step of instruction of optical mode,
Current environment light is detected by AFD and AEC algorithms, so as to detect the flicker frequency of current environment light.
As preference, after mobile terminal receives instruction, low light sensing mode is switched to, is ensureing the identical feelings of brightness
Extend N times of time for exposure under condition, then adjust the integral multiple that the time for exposure is flicker cycle, eliminated when ensureing that brightness is constant
In the step of flicker, after mobile terminal receives instruction, the method for switching to low light sensing mode is：
High light sensing mode switches to low light sensing mode to be realized by adjusting capacitance, i.e., by adjusting capacitance
Size adjusts N value sizes.
As preference, after mobile terminal receives instruction, low light sensing mode is switched to, is ensureing the identical feelings of brightness
Extend N times of time for exposure under condition, then adjust the integral multiple that the time for exposure is flicker cycle, eliminated when ensureing that brightness is constant
In the step of Hz noise, the adjustment time for exposure is for the method for the integral multiple of one flicker cycle of ambient light：
By adjusting gain so that the time for exposure after adjustment is the integral multiple of one flicker cycle of current environment light.
The present invention also provides a kind of system for eliminating flicker, which includes：
Illuminant module opens camera for mobile terminal, into high light sensing mode,
Detection module, for detecting current environment light, if the flicker frequency for detecting current environment light is M HZ, 40 ＜
M ＜ 100HZ, and time for exposure T is less than a flicker cycle 2/M of current environment light, then sends out switching sense to mobile terminal
The instruction of optical mode；
Execution module for working as after mobile terminal receives instruction, switches to low light sensing mode, is ensureing the identical feelings of brightness
Extend N times of time for exposure under condition, then adjust the integral multiple that the time for exposure is flicker cycle, eliminated when ensureing that brightness is constant
Flicker.
As preference, the illuminant module includes：High illuminant module and low illuminant module, the sudden strain of a muscle of the high illuminant module
The bright period is set as N times of low illuminant module flicker cycle, and N is integer.
As preference, the detection module includes AFD algorithms detection module and AEC algorithm detection modules, calculated by AFD
Method detection module and AEC algorithm detection modules detect the flicker frequency of current environment light.
As preference, the execution module includes light sensing mode handover module and gain regulation module,
The light sensing mode handover module, for realizing that high light sensing mode is cut to low light sensing mode by adjusting capacitance
It changes, i.e., adjusts N value sizes by adjusting the size of capacitance；
The gain regulation module, for adjust gain so that the time for exposure after adjustment is one sudden strain of a muscle of current environment light
The integral multiple in bright period.
The present invention also provides a kind of mobile terminal, which includes the system that above-mentioned elimination flickers.
Compared with prior art, the beneficial effects of the present invention are：
1st, the present invention is under normal circumstances using high light sensing mode, once AFD algorithms detect current flicker frequency simultaneously
And the time for exposure be less than flicker cycle when, switch to low light sensing mode, so as to elongate the time for exposure, make flicker
The integral multiple in period, so as to overcome the problems, such as to cause due to the time for exposure is too short flicker can not eliminate.
2nd, the present invention realizes the extension of time for exposure by adjusting gain, is environment optical flare so as to adjust the time for exposure
The integral multiple in period eliminates flicker when ensureing that brightness is constant, and adjustment process is simple and convenient, is preferably experienced to user.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the method flow diagram of elimination flicker that the embodiment of the present invention one provides；
Fig. 2 is the method flow diagram provided by Embodiment 2 of the present invention for eliminating flicker；
Fig. 3 is the system block diagram of elimination flicker that the embodiment of the present invention three provides；
Fig. 4 is the system block diagram of elimination flicker that the embodiment of the present invention four provides.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without creative efforts shall fall within the protection scope of the present invention.
Embodiment one
The embodiment of the present invention one provides a kind of method for eliminating flicker, the present embodiment is carried out below in conjunction with the accompanying drawings detailed
It describes in detail bright.Fig. 1 is the method flow diagram of the embodiment of the present invention one, is please referred to Fig.1, and the method for the embodiment of the present invention includes following step
Suddenly：
Step S101, mobile terminal opens camera, into high light sensing mode；
Step S102, current environment light is detected, if the flicker frequency for detecting current environment light is M HZ, 40 ＜ M ＜
100HZ is under normal conditions 50HZ or 60HZ；
Step S103, time for exposure T is less than a flicker cycle 2/M of current environment light；
Step S104, the instruction of switching light sensing mode is sent out to mobile terminal；
Step S105, after mobile terminal receives instruction, low light sensing mode is switched to, in the case where ensureing that brightness is identical
Extend N times of time for exposure, then adjust the integral multiple that the time for exposure is flicker cycle, eliminate and dodge when ensureing that brightness is constant
It is bright.
The present invention under normal circumstances using high light sensing mode, once AFD algorithms detect current flicker frequency and
When time for exposure is less than flicker cycle, low light sensing mode is switched to, so as to elongate the time for exposure, makes flicker week
The integral multiple of phase, so as to overcome the problems, such as to cause due to the time for exposure is too short flicker can not eliminate.
Embodiment two
The embodiment of the present invention two provides a kind of method for eliminating flicker, is carried out on the basis of embodiment one
It improves.Fig. 2 is the method flow diagram of the embodiment of the present invention two, is please referred to Fig.2, and the method for the embodiment of the present invention includes following step
Suddenly：
Step S201, mobile terminal opens camera, into high light sensing mode；Assuming that current light flicker frequency is
50HZ, and brightness is very high, leads to current exposure time for 0.005S, and gain gain is 1, then this when is just certain to
Now flicker flicker；
The mobile terminal supports both of which：High light sensing mode and low light sensing mode, the flicker of the high light sensing mode
Period is set as N times of low light sensing mode flicker cycle.
Step S202, current environment light is detected by AFD and AEC algorithms, the flicker frequency for detecting current environment light is M
HZ；
If step S203, time for exposure T is less than a flicker cycle 2/M of current environment light,
Step S204, the instruction of switching light sensing mode is then sent out to mobile terminal, such as detects that current environment light is
50HZ, and it was found that when the time for exposure is less than flicker cycle (0.01s), the instruction of switching light sensing mode is sent out to mobile terminal；
Step S205, after mobile terminal receives instruction, N value sizes are adjusted by adjusting the size of capacitance；
Step S206, extend N times of time for exposure in the case where ensureing that brightness is identical；Such as when sensor receive it is specified
After switch to low light sensing mode, at this time ensure that the time for exposure in the case of same brightness should be exactly 0.005*N, gain 1,
As long as so N is enough big, it thus can substantially cover very bright environment；
Step S207, by adjusting gain, the adjustment time for exposure is the integral multiple of flicker cycle；
Step S208, the time for exposure after adjusting is the integral multiple of one flicker cycle of current environment light, is ensureing brightness
Flicker is eliminated when constant.Assuming that N is 5 times, then time for exposure 0.025s, this when is by adjusting gain, Ke Yirang
Time for exposure is 0.02S (for integral multiple), gain 1.25, ensures that brightness is constant in this way and eliminates flicker.
The present invention realizes the extension of time for exposure by adjusting gain, is environment optical flare week so as to adjust the time for exposure
The integral multiple of phase eliminates flicker when ensureing that brightness is constant, and adjustment process is simple and convenient, is preferably experienced to user.
Embodiment three
The embodiment of the present invention three provides a kind of system for eliminating flicker, please refers to Fig.3, the system of the embodiment of the present invention
Including illuminant module 1, detection module 2 and execution module 3, the illuminant module 1, detection module 2 and 3 sequence of execution module connect
It connects, the function of each module will be described in detail below.
Illuminant module 1 opens camera for mobile terminal, into high light sensing mode,
Detection module 2, for detecting current environment light, if the flicker frequency for detecting current environment light is M HZ, 40
＜ M ＜ 100HZ, and time for exposure T is less than a flicker cycle 2/M of current environment light, then sends out switching to mobile terminal
The instruction of light sensing mode；
Execution module 3 for working as after mobile terminal receives instruction, switches to low light sensing mode, is ensureing that brightness is identical
In the case of extend N times of time for exposure, then adjust the integral multiple that the time for exposure is flicker cycle, disappear when guarantee brightness is constant
Except flicker.
Example IV
The embodiment of the present invention four provides a kind of system for eliminating flicker, please refers to Fig.4, the system of the embodiment of the present invention
Difference lies in the illuminant module 1 includes with the system of above-described embodiment three：High illuminant module 11 and low illuminant module 12,
The flicker cycle of the high illuminant module 11 is set as N times of low 12 flicker cycle of illuminant module, and N is integer；
The detection module 2 includes AFD algorithms detection module 21 and AEC algorithms detection module 22, is detected by AFD algorithms
Module 21 and AEC algorithms detection module 22 detect the flicker frequency of current environment light.
The execution module 3 includes light sensing mode handover module 31 and gain regulation module 32,
The light sensing mode handover module 31, for realizing the high light sensing mode to low light sensing mode by adjusting capacitance
Switching adjusts N value sizes by adjusting the size of capacitance；
The gain regulation module 32, for adjust gain so that the time for exposure after adjustment is current environment light one
The integral multiple of flicker cycle.
Embodiment five
The embodiment five of invention provides a kind of mobile terminal, the system which includes above-mentioned elimination flicker,
Can apply it is aforementioned it is corresponding it is a kind of eliminate flicker method, details referring to above-described embodiment one to example IV description,
This is repeated no more.
It should be noted that a kind of communication terminal that above-described embodiment provides, only being partitioned into above-mentioned each function module
Row can be completed as needed and by above-mentioned function distribution by different function modules for example, in practical application, will be
The internal structure of system is divided into different function modules, to complete all or part of function described above.In addition, the communication
Terminal can be mobile phone, tablet computer, human-computer interaction terminal or other communication terminal devices with Menu key.
One of ordinary skill in the art will appreciate that all or part of the steps of the method in the foregoing embodiments are can be with
Relevant hardware is instructed to complete by program, the program can be stored in a computer read/write memory medium
In, the storage medium, such as ROM/RAM, disk, CD.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (11)
- A kind of 1. method for eliminating flicker, which is characterized in that this method includes the following steps：Mobile terminal opens camera, into high light sensing mode；Current environment light is detected, if the flicker frequency for detecting current environment light is M HZ, 40 ＜ M ＜ 100HZ, and expose Time T is less than a flicker cycle 2/M of current environment light, then the instruction of switching light sensing mode is sent out to mobile terminal；After mobile terminal receives instruction, low light sensing mode is switched to, extends N times of exposure in the case where ensureing that brightness is identical Then time adjusts the integral multiple that the time for exposure is flicker cycle, flicker is eliminated when ensureing that brightness is constant.
- 2. the method according to claim 1 for eliminating flicker, which is characterized in that open camera in mobile terminal, enter In the step of high light sensing mode, the mobile terminal supports both of which：High light sensing mode and low light sensing mode, the height are photosensitive The flicker cycle of pattern is set as N times of low light sensing mode flicker cycle.
- 3. a kind of method for eliminating flicker according to claim 1 or 2, which is characterized in that detecting current environment light, such as Fruit detects that the flicker frequency of current environment light is less than current environment light for M HZ, 40 ＜ M ＜ 100HZ, and time for exposure T One flicker cycle 2/M, then to mobile terminal send out switching light sensing mode instruction the step of in,Current environment light is detected by AFD and AEC algorithms, so as to detect the flicker frequency of current environment light.
- 4. the method for a kind of elimination flicker according to claims 1 to 3 any one, which is characterized in that when mobile whole After end receives instruction, low light sensing mode is switched to, extends N times of time for exposure in the case where ensureing that brightness is identical, then adjusts The whole time for exposure is the integral multiple of flicker cycle, in eliminating the step of flickering when ensureing that brightness is constant, when mobile terminal receives After instruction, the method for switching to low light sensing mode is：High light sensing mode switches to low light sensing mode to be realized by adjusting capacitance, i.e., by adjusting the size of capacitance To adjust N value sizes.
- 5. a kind of method for eliminating flicker according to any one of claims 1 to 4, which is characterized in that when mobile whole After end receives instruction, low light sensing mode is switched to, extends N times of time for exposure in the case where ensureing that brightness is identical, then adjusts The whole time for exposure is the integral multiple of flicker cycle, and in eliminating the step of flickering when ensureing that brightness is constant, the adjustment time for exposure is The method of the integral multiple of one flicker cycle of ambient light is：By adjusting gain so that the time for exposure after adjustment is the integral multiple of one flicker cycle of current environment light.
- 6. a kind of system for eliminating flicker, which is characterized in that the system includes：Illuminant module opens camera for mobile terminal, into high light sensing mode,Detection module, for detecting current environment light, if the flicker frequency for detecting current environment light is M HZ, 40 ＜ M ＜ 100HZ, and time for exposure T is less than a flicker cycle 2/M of current environment light, then sends out the photosensitive mould of switching to mobile terminal The instruction of formula；Execution module for working as after mobile terminal receives instruction, switches to low light sensing mode, in the case where ensureing that brightness is identical Extend N times of time for exposure, then adjust the integral multiple that the time for exposure is flicker cycle, eliminate and dodge when ensureing that brightness is constant It is bright.
- 7. the system according to claim 6 for eliminating flicker, which is characterized in that the illuminant module includes：High photosensitive mould Block and low illuminant module, the flicker cycle of the high illuminant module are set as N times of low illuminant module flicker cycle, and N is integer.
- 8. the system of the elimination flicker described according to claim 6 or 7, which is characterized in that the detection module includes AFD algorithms Detection module and AEC algorithm detection modules detect current environment by AFD algorithms detection module and AEC algorithm detection modules The flicker frequency of light.
- 9. the system of the elimination flicker according to claim 6 to 8 any one, which is characterized in that the execution module packet Light sensing mode handover module and gain regulation module are included,The light sensing mode handover module, for realizing that high light sensing mode switches to low light sensing mode by adjusting capacitance, N value sizes are adjusted by adjusting the size of capacitance；The gain regulation module, for adjust gain so that the time for exposure after adjustment is one flicker week of current environment light The integral multiple of phase.
- 10. a kind of mobile terminal, which is characterized in that include the system of the elimination flicker as described in any one of claim 6-9.
- 11. a kind of computer read/write memory medium, which is characterized in that the computer read/write memory medium is stored with journey Sequence, described program carry out the method described in perform claim 1 to 5 any one of requirement for instructing relevant hardware.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810002951.0A CN108174117B (en) | 2015-08-10 | 2015-08-10 | Method and system for eliminating flicker, mobile terminal and medium product |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510487444.7A CN105007429B (en) | 2015-08-10 | 2015-08-10 | A kind of method, system and mobile terminal for eliminating flicker |
| CN201810002951.0A CN108174117B (en) | 2015-08-10 | 2015-08-10 | Method and system for eliminating flicker, mobile terminal and medium product |
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| CN201510487444.7A Division CN105007429B (en) | 2015-08-10 | 2015-08-10 | A kind of method, system and mobile terminal for eliminating flicker |
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| CN108174117A true CN108174117A (en) | 2018-06-15 |
| CN108174117B CN108174117B (en) | 2021-04-02 |
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| CN201510487444.7A Active CN105007429B (en) | 2015-08-10 | 2015-08-10 | A kind of method, system and mobile terminal for eliminating flicker |
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| CN110381276A (en) * | 2019-05-06 | 2019-10-25 | 华为技术有限公司 | A kind of video capture method and electronic equipment |
| CN110784658A (en) * | 2019-10-31 | 2020-02-11 | Oppo广东移动通信有限公司 | Exposure control method, device, storage medium and terminal equipment |
| CN110855901A (en) * | 2019-11-28 | 2020-02-28 | 维沃移动通信有限公司 | Camera exposure time control method and electronic equipment |
| CN111163270A (en) * | 2019-12-30 | 2020-05-15 | Oppo广东移动通信有限公司 | Method for eliminating flicker, electronic device and storage medium |
| WO2021184905A1 (en) * | 2020-03-19 | 2021-09-23 | 闻泰科技(深圳)有限公司 | Camera module, control method and apparatus, electronic device, and storage medium |
| CN113542532A (en) * | 2020-04-13 | 2021-10-22 | 深圳市万普拉斯科技有限公司 | Shooting flicker elimination method and device, shooting equipment and readable storage medium |
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| CN109247067B (en) * | 2016-06-08 | 2021-02-12 | 华为技术有限公司 | Image processing apparatus and image processing method |
| CN109151256B (en) * | 2018-08-31 | 2020-12-08 | 惠州华阳通用电子有限公司 | Camera flicker elimination method and device based on sensor detection |
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| CN110913149A (en) * | 2019-11-04 | 2020-03-24 | Oppo广东移动通信有限公司 | Control method, electronic device, and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110381276A (en) * | 2019-05-06 | 2019-10-25 | 华为技术有限公司 | A kind of video capture method and electronic equipment |
| CN110784658A (en) * | 2019-10-31 | 2020-02-11 | Oppo广东移动通信有限公司 | Exposure control method, device, storage medium and terminal equipment |
| CN110784658B (en) * | 2019-10-31 | 2021-12-07 | Oppo广东移动通信有限公司 | Exposure control method, device, storage medium and terminal equipment |
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| WO2021184905A1 (en) * | 2020-03-19 | 2021-09-23 | 闻泰科技(深圳)有限公司 | Camera module, control method and apparatus, electronic device, and storage medium |
| CN113542532A (en) * | 2020-04-13 | 2021-10-22 | 深圳市万普拉斯科技有限公司 | Shooting flicker elimination method and device, shooting equipment and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105007429B (en) | 2018-01-19 |
| CN105007429A (en) | 2015-10-28 |
| CN108174117B (en) | 2021-04-02 |
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