CN103561210A - Method and mobile terminal for photographing according to background light - Google Patents
Method and mobile terminal for photographing according to background light Download PDFInfo
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Abstract
The invention discloses a method and mobile terminal for photographing according to background light. The method includes the first step of detecting a current light value through an ambient light sensor, the second step of comparing the current light value with values of preset intervals and judging the interval where the current light value belongs, wherein the preset intervals comprise a plurality of intervals arranged from high to low, and the third step of adjusting ISO and exposure compensation values according to the interval where the current light value belongs to obtain a high-brightness photo. According to the scheme, the adjusting of the ISO and exposure compensation values can be achieved according to different photographing environments, so different photographing modes can be switched automatically to enable a user to photograph satisfactory photos.
Description
Technical field
The application relates to communication technical field, particularly relates to a kind of method of taking pictures according to bias light and mobile terminal.
Background technology
Along with the variation of intelligent mobile terminal function, user is also more and more higher to the experience requirements of taking pictures, and the camera function of mobile terminal is more and more paid attention to.At present, existing mobile terminal is being pursued higher hardware configuration always, to reach, can be equal to mm professional camera special, but the restriction due to size and the photobehavior of photoreceptor, do not possess more intelligentized camera function, cannot be according to different photo environments, the different exposal model that automatically switches is so that user takes satisfied photograph.For example, in cloudy day or the not so good place of light, the photograph of taking is darker.
Yet, can be by regulating some parameter configuration of camera to make up these problems for digital camera professional person, but for a lot of mobile phone users, and be unfamiliar with the practical significance of parameters, also just cannot by these parameters, improve well the quality of photograph.
Summary of the invention
The technical problem that the application mainly solves is to provide a kind of method of taking pictures according to bias light and mobile terminal, can be according to different photo environments, automatically prompting user, making user can switch quickly and easily fast different exposal models takes pictures, obtain high-quality photograph, improve user and experience.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of method of taking pictures according to bias light is provided, and described method comprises the steps: to detect current values of light by ambient light sensor; By the value comparison of described current values of light and pre-set interval, and judge the interval under described current values of light, wherein, described pre-set interval comprises a plurality of intervals of arranging from high to low; According to the interval under described current values of light, adjust ISO, exposure bias value, to obtain the photograph of high brightness.
Wherein, according to the interval under described current values of light, the step of adjusting ISO, exposure bias value comprises: when described current values of light belongs to pre-set interval intermediate value minimum interval, ISO, exposure bias value are adjusted into ceiling value automatically, to obtain the photograph of high brightness, wherein, arrange higher interval, need the ISO of adjustment, the value of exposure bias value is less; When described current values of light belongs to pre-set interval intermediate value maximum interval, ISO, exposure bias value are adjusted into the settings that system default is recommended automatically, to obtain the photograph of high brightness; According to the interval under described current values of light, the step of adjusting ISO, exposure bias value comprises afterwards: after taking pictures, ISO, exposure bias value are automatically restored to the settings that system default is recommended.
Wherein, according to the values of light in described current affiliated interval, the step of adjusting ISO, exposure bias value comprises: threshold values interval is set in described pre-set interval; When described current values of light is greater than the maximum in threshold values interval, ISO, exposure bias value are adjusted into the settings that system default is recommended automatically, to obtain the photograph of high brightness; When described current values of light is less than the minimum value in threshold values interval, prompting user manually adjusts ISO, exposure bias value, to obtain the photograph of high brightness; According to the interval under described current values of light, the step of adjusting ISO, exposure bias value also comprises afterwards: after taking pictures, preserve ISO, the exposure bias value of Set For Current.
Wherein, when described current values of light is less than the minimum value in threshold values interval, ISO, the exposure bias value of pointing out user and to user, recommending to adjust, select whether to use recommendation for user, thereby obtain the photograph of high brightness.
Wherein, pointing out user and to user, recommending to need the ISO adjusting, also comprise after the step of exposure bias value: during when user's choice for use recommendation, by the ISO of described recommendation, exposure bias value, taking pictures; When user selects not use recommendation, the settings of recommending by system default are taken pictures; After taking pictures, preserve ISO, the exposure bias value of Set For Current.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of mobile terminal is provided, and described mobile terminal comprises: detection module, judge module, control module; Described detection module is for detecting current values of light by ambient light sensor, and described detection module sends described current values of light to judge module; Described judge module is for receiving described current values of light, by the value comparison of described current values of light and pre-set interval, and judge the interval under described current values of light, wherein, described pre-set interval comprises a plurality of intervals of arranging from high to low, and described judge module sends the interval under described current values of light to described control module; Described control module, for receiving the affiliated interval of described current values of light, according to the interval under described current values of light, is adjusted ISO, exposure bias value, to obtain the photograph of high brightness.
Wherein, described control module is also when belonging to pre-set interval intermediate value minimum interval when described current values of light, ISO, exposure bias value are adjusted into ceiling value automatically, to obtain the photograph of high brightness, wherein, arrange higher interval, need the ISO of adjustment, the value of exposure bias value is less; And, when described current values of light belongs to pre-set interval intermediate value maximum interval, ISO, exposure bias value are adjusted into the settings that system default is recommended automatically, to obtain the photograph of high brightness; And after taking pictures, ISO, exposure bias value are automatically restored to the settings that system default is recommended.
Wherein, described control module is also for arranging behind threshold values interval in described pre-set interval, when described current values of light is greater than the maximum in threshold values interval, ISO, exposure bias value are adjusted into the settings that system default is recommended automatically, to obtain the photograph of high brightness; And when described current values of light is less than the minimum value in threshold values interval, prompting user manually adjusts ISO, exposure bias value, to obtain the photograph of high brightness; And after taking pictures, preserve current ISO, exposure bias value.
Wherein, described control module is also for when described current values of light is less than the minimum value in threshold values interval, and ISO, the exposure bias value of pointing out user and to user, recommending to adjust, select whether to use recommendation for user, thereby obtain the photograph of high brightness.
Wherein, described control module also, for when user's choice for use recommendation, is taken pictures by the ISO of described recommendation, exposure bias value; And when user selects not use recommendation, the settings of recommending by system default are taken pictures; And after taking pictures, preserve ISO, the exposure bias value of Set For Current.
The invention has the beneficial effects as follows: the situation that is different from prior art, the present invention by being divided into surround lighting at least 6 different pre-set interval in system, when taking pictures, by the current values of light that ambient light sensor is detected, compare with the value of pre-set interval, and judge which pre-set interval is current values of light belong to, then according to the values of light in affiliated interval, adjust ISO, exposure bias value, to obtain the photograph of high brightness.Realized according to different photo environments, adjust ISO, exposure bias value, thereby the different exposal model that automatically switches has been so that user has taken satisfied photograph.
Accompanying drawing explanation
Fig. 1 is the method one execution mode flow chart that the application takes pictures according to bias light;
Fig. 2 is another execution mode flow chart of method that the application takes pictures according to bias light;
Fig. 3 is the application's mobile terminal one execution mode structural representation.
Embodiment
Below in conjunction with accompanying drawing and concrete execution mode, be described.
Consult Fig. 1, Fig. 1 is the method one execution mode flow chart that the application takes pictures according to bias light.In present embodiment, the method for taking pictures according to bias light comprises the following steps:
Step S101: detect current values of light by ambient light sensor.
By the ambient light sensor of the built-in camera of mobile terminal, detect the values of light of current photo environment.
Step S102: by the value comparison of described current values of light and pre-set interval, and judge the interval under described current values of light, wherein, described pre-set interval comprises a plurality of intervals of arranging from high to low.
The value of pre-set interval in current values of light and system is compared, judge the interval that current values of light is affiliated, if values of light falls into certain interval, values of light belongs to this interval.Wherein, pre-set interval at least comprises a plurality of different intervals, and arranges from high to low by interval value.In the present embodiment, pre-set interval is 6, and pre-set interval also can be less than 6 or more in other embodiments.
Step S103: according to the interval under described current values of light, adjust ISO, exposure bias value, to obtain the photograph of high brightness.
Due to different intervals corresponding different ISO, exposure bias value, and arrange higher interval, need the ISO of adjustment, the value of exposure bias value is just less, therefore, according to the interval under current values of light, just can obtain needing ISO, the exposure bias value of adjustment, by ISO, exposure bias value after adjusting, take, obtain the photograph of high brightness.After completing shooting, ISO, exposure bias value are automatically restored to the settings that system default is recommended, return to the preview mode of taking pictures.
For example, current values of light belongs to first when interval, and ISO, exposure bias value are adjusted into ceiling value ISO1600,1.5EV automatically.
When current values of light belongs between Second Region, ISO, exposure bias value are adjusted into ISO1250,1.2EV automatically.
When current values of light belongs to the 3rd interval, ISO, exposure bias value are adjusted into ISO800,1EV automatically.
When current values of light belongs to the 4th interval, ISO, exposure bias value are adjusted into ISO400,0.8EV automatically.
When current values of light belongs to the 5th interval, ISO, exposure bias value are adjusted into ISO200,0.6EV automatically.
When current values of light belongs to the 6th interval, ISO, exposure bias value are adjusted into the settings ISO100 that system default is recommended, 0EV automatically.
Consult Fig. 2, Fig. 2 is another execution mode flow chart of method that the application takes pictures according to bias light.In present embodiment, the method for taking pictures according to bias light comprises the following steps:
Step S201: by the current values of light of light sensors.
By the ambient light sensor of the built-in camera of mobile terminal, detect the values of light of current photo environment.
Step S202: enter the preview mode of taking pictures.
ISO, exposure bias value are made as to the settings that system default is recommended automatically, enter the preview mode of taking pictures, the image effect for user's preview in current shooting environment.For example, ISO, exposure bias value are made as to the settings ISO100 that system default is recommended, 0EV automatically.
Step S203: by the value comparison in described current values of light and threshold values interval, judge whether to adjust ISO, exposure bias value.
Threshold values interval is set in pre-set interval, the value of current values of light and pre-set interval is compared, judge the interval that current values of light is affiliated, if values of light falls into certain interval, values of light belongs to this interval.Again the value in the interval value under current values of light and threshold values interval is compared, and then judge whether to adjust ISO, exposure bias value.Wherein, pre-set interval comprises a plurality of intervals of arranging from high to low.In the present embodiment, pre-set interval is 6, and threshold values interval is the 4th interval; Pre-set interval also can be less than 6 or more in other embodiments, and threshold values interval can be also the arbitrary interval in pre-set interval.
When the interval maximum under current values of light is less than the minimum value in threshold values interval, is judged as and need to adjusts ISO, exposure bias value, perform step S204.
When the interval minimum value under current values of light is greater than the maximum in threshold values interval, is judged as and does not need to adjust ISO, exposure bias value, perform step S206.
Step S204: prompting user manually adjusts ISO, exposure bias value.
When being judged as need to adjust ISO, exposure bias value time, by displaying audio file, point out user manually to adjust ISO, exposure bias value.For example, when being judged as need to adjust ISO, exposure bias value time, displaying audio file " light is too dark, and ISO and exposure bias value are adjusted in suggestion " prompting user.
In the present embodiment, audio file, for some conventional, aughty voice recording files, can be also common, self-defining recording file in other embodiments.
Step S205: receive ISO, exposure bias value that user manually adjusts.
Receive user according to the ISO of the manual input of current photo environment, the value of exposure bias value, and adjust.
Step S206: take pictures.
By ISO, exposure bias value after adjusting, take, to obtain the photograph of high brightness.
Step S207: the ISO, the exposure bias value that retain Set For Current.
After completing shooting, retain ISO, the exposure bias value of Set For Current.
Step S208: finish.
Finish this and take, return to the preview mode of taking pictures.
Step S209: ISO, the exposure bias value of pointing out user and recommending to user to adjust.
Interval maximum under current values of light is less than the minimum value in threshold values interval, be judged as in the time of need to adjusting ISO, exposure bias value, by displaying audio file, point out user to adjust ISO, exposure bias value, simultaneously according to the interval under current values of light, to user, recommend to need ISO, the exposure bias value of adjustment, and eject dialog box, for user, select whether by recommendation, to adjust ISO, exposure bias value.
For example, interval maximum under current values of light is less than the minimum value in threshold values interval, be judged as in the time of need to adjusting ISO, exposure bias value, and judge when current values of light belongs to the first interval, by displaying audio file " light is too dark; compensate ISO and exposure bias value? " eject prompted dialog frame prompting user simultaneously and " please determine ISO is adjusted to 1600; exposure bias value is adjusted to peak+3 ", and ejection is selected, and dialog box " is determined ", " cancellation " selected for user.
In the present embodiment, due to different intervals corresponding different ISO, exposure bias value, and arrange higher interval, need the ISO of adjustment, the value of exposure bias value is just less, therefore, the interval maximum under current values of light is less than the minimum value in threshold values interval, is judged as in the time of need to adjusting ISO, exposure bias value, according to the interval under current values of light, just can obtain needing ISO, the exposure bias value of adjustment.Wherein, in the present embodiment, threshold values interval is the 4th interval, can be also the arbitrary interval in pre-set interval in other embodiments.
Audio file, for some conventional, aughty voice recording files, can be also common, self-defining recording file in other embodiments.
Step S210: judge whether user adjusts ISO, exposure bias value by recommendation.
Receive the select command that user sends, according to select command, judge whether user selects to adjust ISO, exposure bias value by recommendation.
When judgement user does not use recommendation to adjust ISO, exposure bias value, the ISO of selective system default setting, exposure bias value, perform step S206.
When judgement user adjusts ISO, exposure bias value by recommendation, perform step S211.
Step S211: ISO, exposure bias value are adjusted into recommendation automatically.
System is adjusted into recommendation automatically by ISO, exposure bias value, and performs step S206.
For example, ISO is adjusted to 1600, exposure bias value is adjusted to peak+3.
In the present embodiment, step 209~step 211 is optional step.
Consult Fig. 3, Fig. 3 is the structural representation of the application's mobile terminal one execution mode.In present embodiment, mobile terminal comprises: detection module 310, judge module 320, control module 330.
Detection module 310 is for detecting current values of light by ambient light sensor.Such as, detection module 310 detects the values of light of current photo environment by the ambient light sensor of the built-in camera of mobile terminal.Detection module 310 sends current values of light to judge module 320.
Judge module 320, for receiving current values of light, by the value comparison of current values of light and pre-set interval, and judges the interval under current values of light, and wherein, pre-set interval comprises a plurality of intervals of arranging from high to low.Such as, judge module 320 compares the value of pre-set interval in current values of light and system, judges the interval that current values of light is affiliated, if values of light falls into certain interval, values of light belongs to this interval.Wherein, pre-set interval at least comprises a plurality of different intervals, and arranges from high to low by interval value.Judge module 320 sends the interval under current values of light to control module 330.
Control module 330, for receiving the interval under current values of light, according to the interval under current values of light, is adjusted ISO, exposure bias value, to obtain the photograph of high brightness.Such as, due to different intervals corresponding different ISO, exposure bias value, and arrange higher interval, need the ISO of adjustment, the value of exposure bias value is just less, therefore, control module 330, according to the interval under current values of light, just can obtain needing ISO, the exposure bias value of adjustment, and take by ISO, exposure bias value after adjusting, can obtain the photograph of high brightness.After completing shooting, control module 330 automatically restores to by ISO, exposure bias value the settings that system default is recommended, and returns to the preview mode of taking pictures.
For example, current values of light belongs to first when interval, and ISO, exposure bias value are adjusted into ceiling value ISO1600,1.5EV automatically.
When current values of light belongs between Second Region, ISO, exposure bias value are adjusted into ISO1250,1.2EV automatically.
When current values of light belongs to the 3rd interval, ISO, exposure bias value are adjusted into ISO800,1EV automatically.
When current values of light belongs to the 4th interval, ISO, exposure bias value are adjusted into ISO400,0.8EV automatically.
When current values of light belongs to the 5th interval, ISO, exposure bias value are adjusted into ISO200,0.6EV automatically.
When current values of light belongs to the 6th interval, ISO, exposure bias value are adjusted into the settings ISO100 that system default is recommended, 0EV automatically.
In the present embodiment, pre-set interval is 6, and pre-set interval also can be less than 6 or more in other embodiments.
Please continue to refer to Fig. 3, Fig. 3 is another execution mode structural representation of the application's mobile terminal.In execution mode, mobile terminal comprises: detection module 310, judge module 320, control module 330.
Detection module 310 is for detecting current values of light by ambient light sensor.Such as, detection module 310 detects the values of light of current photo environment by the ambient light sensor of the built-in camera of mobile terminal.Detection module 310 sends current values of light to judge module 320 and control module 330.
Judge module 320 is for arranging threshold values interval in pre-set interval, and receive current values of light, by the value comparison in current values of light and threshold values interval, judge whether to adjust ISO, exposure bias value, wherein, pre-set interval comprises a plurality of intervals of arranging from high to low.Such as, judge module 310 arranges threshold values interval in pre-set interval, and the value of current values of light and pre-set interval is compared, and judges the interval that current values of light is affiliated, if values of light falls into certain interval, values of light belongs to this interval.Again the value in the interval value under current values of light and threshold values interval is compared, and then judge whether to adjust ISO, exposure bias value.Wherein, pre-set interval comprises a plurality of intervals of arranging from high to low.
When the interval maximum under current values of light is less than the minimum value in threshold values interval, judge module 320 is judged as need to adjust ISO, exposure bias value.
When the interval minimum value under current values of light is greater than the maximum in threshold values interval, judge module 320 is judged as does not need to adjust ISO, exposure bias value.
Whether judge module 320 will need the judged result of adjusting ISO, exposure bias value to send to control module 330.
Control module 330, for arranging behind threshold values interval in pre-set interval, receives current values of light, and controls mobile terminal and enter the preview mode of taking pictures.Such as, control module 330 receives and detects current values of light by ambient light sensor, and ISO, exposure bias value are made as to the settings that system default is recommended automatically, make mobile terminal enter the preview mode of taking pictures, the image effect for user's preview in current shooting environment.For example, ISO, exposure bias value are made as to the settings ISO100 that system default is recommended, 0EV automatically.
Control module 330 is also for receiving the no judged result that need to adjust ISO, exposure bias value, and switches exposal model according to judged result, to obtain the photograph of high brightness.After shooting completes, control module 330 is also for retaining ISO, the exposure bias value of Set For Current, when taking continuously, directly calls current ISO, exposure bias value is taken pictures, to obtain the photograph of high brightness.
Such as, interval maximum under current values of light is less than the minimum value in threshold values interval, be judged as in the time of need to adjusting ISO, exposure bias value, control module 330 receives the judged result that need to adjust ISO, exposure bias value, and point out user to adjust ISO, exposure bias value, thereby obtain the photograph of high brightness.After shooting completes, control module 330 reservation active users are ISO, the exposure bias value of input manually, during for continuous shooting, directly calls ISO, the exposure bias value of active user's setting and takes pictures.For example, interval maximum under current values of light is less than the minimum value in threshold values interval, be judged as in the time of need to adjusting ISO, exposure bias value, control module 330 is by displaying audio file " light is too dark; ISO and exposure bias value are adjusted in suggestion " prompting user, so that user manually inputs ISO, exposure bias value according to current photo environment, and, user, input after the ISO, exposure bias value of adjustment, receive user manually ISO, the exposure bias value of input, and take by ISO, exposure bias value after adjusting.
When the interval maximum under current values of light is less than the minimum value in threshold values interval, be judged as in the time of need to adjusting ISO, exposure bias value, control module 330 receives the judged result that need to adjust ISO, exposure bias value, prompting user also recommends to need ISO, the exposure bias value of adjustment to user according to the interval under current values of light, for user, select whether to use recommendation.When judge module 320 judgement users adjust ISO, exposure bias value by recommendation, control module 330 is taken by recommendation adjustment ISO, exposure bias value, thereby obtains the photograph of high brightness.After shooting completes, control module 330 retains ISO, the exposure bias value of recommending adjustment, during for continuous shooting, directly calls ISO, the exposure bias value of current recommendation setting and takes pictures.
For example, interval maximum under current values of light is less than the minimum value in threshold values interval, be judged as and need to adjust ISO, exposure bias value, and when the current values of light of judgement belongs to the first interval, control module 330 by displaying audio file " light is too dark; compensate ISO and exposure bias value? " eject prompted dialog frame prompting user simultaneously and " please determine ISO is adjusted to 1600; exposure bias value is adjusted to peak+3 ", and ejection is selected, and dialog box " is determined ", " cancellation " selected for user.When user selects after " determining ", control module 330 for example, is taken by recommendation adjustment ISO, exposure bias value (, recommendation is ISO1600 ,+6EV), thereby obtains the photograph of high brightness.After shooting completes, control module 330 retains current recommendation ISO1600, and+3EV, when taking continuously, directly calls ISO, the exposure bias value of Set For Current and takes pictures.
Interval minimum value under current values of light is greater than the maximum in threshold values interval, be judged as and do not need to adjust ISO, during exposure bias value, and, interval maximum under current values of light is less than the minimum value in threshold values interval, and control module 330 prompting users the ISO that provides recommendation to adjust to user, after exposure bias value, when judge module, 320 judgement users do not use recommendation to adjust ISO, during exposure bias value, control module 330 is directly called the system default of taking pictures in preview mode and is recommended the ISO arranging, exposure bias value, and press the ISO that system default arranges, exposure bias value is taken, thereby obtain the photograph of high brightness.After shooting completes, control module 330 retains ISO, the exposure bias value that current system default arranges, and during for continuous shooting, directly calls ISO, the exposure bias value of default setting and takes pictures.
For example, interval minimum value under current values of light is greater than the maximum in threshold values interval, is judged as while not needing to adjust ISO, exposure bias value, and control module 330 is called system default in the preview mode of taking pictures and recommended the ISO, the exposure bias value that arrange, ISO100,0EV.And pressing ISO100,0EV takes.After shooting completes, control module 330 retains ISO, the exposure bias value that current system default arranges, and when taking continuously, directly calls ISO, the exposure bias value of default setting and takes pictures.
In the present embodiment, pre-set interval is 6, and threshold values interval is the 4th interval, and pre-set interval also can be less than 6 or more in other embodiments, and threshold values interval can be also the arbitrary interval in pre-set interval.Due to different intervals corresponding different ISO, exposure bias value, and arrange higher interval, need ISO, the exposure bias value of adjustment just less, therefore, interval maximum under current values of light is less than the minimum value in threshold values interval, be judged as in the time of need to adjusting ISO, exposure bias value, control module 330 is according to the interval under current values of light, just can get the ISO, the exposure bias value that need adjustment, thereby to user, recommend to need ISO, the exposure bias value of adjustment, for user, select whether to use recommendation.Audio file, for some conventional, aughty voice recording files, can be also common, self-defining recording file in other embodiments.
Such scheme, by surround lighting being divided into at least 6 different pre-set interval in system, when taking pictures, by the current values of light that ambient light sensor is detected, compare with the value of pre-set interval, and judge which pre-set interval is current values of light belong to, then according to the values of light in affiliated interval, adjust ISO, exposure bias value, to obtain the photograph of high brightness.Realized according to different photo environments, adjust ISO, exposure bias value, thereby the different exposal model that automatically switches has been so that user has taken satisfied photograph.
In more than describing, in order to illustrate rather than in order limiting, to have proposed the detail such as particular system structure, interface, technology, to thoroughly understand the application.Yet, not it will be clear to one skilled in the art that in there is no other execution mode of these details and can realize the application yet.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders the application's description.
Claims (10)
1. a method of taking pictures according to bias light, is characterized in that, described method comprises the steps:
By ambient light sensor, detect current values of light;
By the value comparison of described current values of light and pre-set interval, and judge the interval under described current values of light, wherein, described pre-set interval comprises a plurality of intervals of arranging from high to low;
According to the interval under described current values of light, adjust ISO, exposure bias value, to obtain the photograph of high brightness.
2. method according to claim 1, is characterized in that, according to the interval under described current values of light, the step of adjusting ISO, exposure bias value comprises:
When described current values of light belongs to pre-set interval intermediate value minimum interval, ISO, exposure bias value are adjusted into ceiling value automatically, to obtain the photograph of high brightness, wherein, arrange higher interval, need the ISO adjusting, the value of exposure bias value is less; When described current values of light belongs to pre-set interval intermediate value maximum interval, ISO, exposure bias value are adjusted into the settings that system default is recommended automatically, to obtain the photograph of high brightness;
According to the interval under described current values of light, the step of adjusting ISO, exposure bias value comprises afterwards:
After taking pictures, ISO, exposure bias value are automatically restored to the settings that system default is recommended.
3. method according to claim 1, is characterized in that, according to the interval under described current values of light, the step of adjusting ISO, exposure bias value comprises:
Threshold values interval is set in described pre-set interval;
When described current values of light is greater than the maximum in threshold values interval, ISO, exposure bias value are adjusted into the settings that system default is recommended automatically, to obtain the photograph of high brightness;
When described current values of light is less than the minimum value in threshold values interval, prompting user manually adjusts ISO, exposure bias value, to obtain the photograph of high brightness;
According to the interval under described current values of light, the step of adjusting ISO, exposure bias value also comprises afterwards:
After taking pictures, preserve ISO, the exposure bias value of Set For Current.
4. method according to claim 3, is characterized in that,
When described current values of light is less than the minimum value in threshold values interval, ISO, the exposure bias value of pointing out user and to user, recommending to adjust, select whether to use recommendation for user, thereby obtain the photograph of high brightness.
5. method according to claim 4, is characterized in that, is pointing out user and to user, is recommending to need the ISO adjusting, also comprise after the step of exposure bias value:
When user's choice for use recommendation, by the ISO of described recommendation, exposure bias value, take pictures;
When user selects not use recommendation, the settings of recommending by system default are taken pictures;
After taking pictures, preserve ISO, the exposure bias value of Set For Current.
6. a mobile terminal, is characterized in that, described mobile terminal comprises: detection module, judge module, control module;
Described detection module is for detecting current values of light by ambient light sensor, and described detection module sends described current values of light to judge module;
Described judge module is for receiving described current values of light, by the value comparison of described current values of light and pre-set interval, and judge the interval under described current values of light, wherein, described pre-set interval comprises a plurality of intervals of arranging from high to low, and described judge module sends the interval under described current values of light to described control module;
Described control module, for receiving the affiliated interval of described current values of light, according to the interval under described current values of light, is adjusted ISO, exposure bias value, to obtain the photograph of high brightness.
7. mobile terminal according to claim 6, it is characterized in that, described control module is also when belonging to pre-set interval intermediate value minimum interval when described current values of light, ISO, exposure bias value are adjusted into ceiling value automatically, to obtain the photograph of high brightness, wherein, arrange higher interval, need the ISO of adjustment, the value of exposure bias value is less; And, when described current values of light belongs to pre-set interval intermediate value maximum interval, ISO, exposure bias value are adjusted into the settings that system default is recommended automatically, to obtain the photograph of high brightness; And after taking pictures, ISO, exposure bias value are automatically restored to the settings that system default is recommended.
8. mobile terminal according to claim 6, it is characterized in that, described control module is also for arranging behind threshold values interval in described pre-set interval, when described current values of light is greater than the maximum in threshold values interval, ISO, exposure bias value are adjusted into the settings that system default is recommended automatically, to obtain the photograph of high brightness; And when described current values of light is less than the minimum value in threshold values interval, prompting user manually adjusts ISO, exposure bias value, to obtain the photograph of high brightness; And after taking pictures, preserve current ISO, exposure bias value.
9. mobile terminal according to claim 8, it is characterized in that, described control module is also for when described current values of light is less than the minimum value in threshold values interval, ISO, the exposure bias value of pointing out user and to user, recommending to adjust, for user, select whether to use recommendation, thereby obtain the photograph of high brightness.
10. mobile terminal according to claim 9, is characterized in that, described control module also, for when user's choice for use recommendation, is taken pictures by the ISO of described recommendation, exposure bias value; And when user selects not use recommendation, the settings of recommending by system default are taken pictures; And after taking pictures, preserve ISO, the exposure bias value of Set For Current.
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