CN103957363A - Flash camera shooting method and camera shooting device - Google Patents
Flash camera shooting method and camera shooting device Download PDFInfo
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- CN103957363A CN103957363A CN201410208911.3A CN201410208911A CN103957363A CN 103957363 A CN103957363 A CN 103957363A CN 201410208911 A CN201410208911 A CN 201410208911A CN 103957363 A CN103957363 A CN 103957363A
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Abstract
The invention discloses a flash camera shooting method and a camera shooting device. The flash camera shooting method comprises the following steps of entering into a picture taking mode, judging whether a flashlight turning-on condition is met or not, if yes, turning on a flashlight and keeping the flashlight to be normally on, adjusting the brightness of the flashlight to the appropriate brightness, and accordingly conducting flash camera shooting. Consequently, when a picture is taken in a dark environment (like at night), the flashlight is kept to be normally on in the shooting process, a user can preview the flash shooting effect in real time, what the user sees is obtained, the brightness of the flashlight can be adjusted automatically or manually in the previewing process, the condition that a local area is overexposed or too dark is avoided, and the shooting effect is made best. The user can take pictures again after being satisfied with the shooting effect, the satisfying pictures can be one-time taken, the trouble of repeated shooting is avoided, the shooting efficiency is improved, and user experience is improved.
Description
Technical field
The present invention relates to camera work field, especially relate to a kind of flash of light image pickup method and filming apparatus.
Background technology
Flash of light is taken, and under low light environment, carries out illumination compensation, to guarantee to shoot the image pickup method of the clear bright photo of picture in dim situation.Existing filming apparatus, when glistening shooting, is only controlled photoflash lamp in moment once glittering, illuminates current environment carry out luminance compensation with this.Because the time of flash of light is very short, very strong, therefore expose insufficient and inhomogeneous, very easily cause subregion overexposure, and subregion is excessively dark, shooting effect is not good.And preview effect is different with shooting income effect, the effect that causes the repeated multiple times shooting of user's needs to obtain wanting, shooting efficiency is lower.
Summary of the invention
Main purpose of the present invention is to provide a kind of flash of light image pickup method and filming apparatus, is intended to provide in shooting process the live preview of flash of light shooting effect, and What You See Is What You Get improves and takes efficiency and shooting effect.
To achieve these objectives, the present invention proposes a kind of flash of light image pickup method, comprises step:
Enter exposal model;
Judge whether to meet photoflash lamp unlocking condition, if so, open photoflash lamp and make it keep Chang Liang;
Regulate the brightness of photoflash lamp to appropriate brightness, the shooting of glistening accordingly.
Preferably, described in, judging whether to meet photoflash lamp unlocking condition comprises:
If receive photoflash lamp open command or ambient light illumination detected, be less than threshold value, judge and meet photoflash lamp unlocking condition.
Preferably, described method also comprises:
Open after photoflash lamp, if receive photoflash lamp out code, ambient light illumination detected and reach threshold value or detect and exited exposal model, close photoflash lamp.
Preferably, the brightness of described adjusting photoflash lamp to appropriate brightness comprises: automatically regulate the brightness of photoflash lamp to regulate the brightness of photoflash lamp to appropriate brightness to appropriate brightness or according to the regulating command of the manual input of user.
Preferably, the brightness of described adjusting photoflash lamp to appropriate brightness comprises: detect the exposure of focusing area, according to described exposure, automatically regulate the brightness of photoflash lamp to appropriate brightness.
The present invention proposes a kind of filming apparatus simultaneously, comprises flash of light control module, flash of light adjustment module and taking module, wherein:
Flash of light control module, for after entering exposal model, judges whether to meet photoflash lamp unlocking condition, if so, opens photoflash lamp and makes it keep Chang Liang;
Flash of light adjustment module, for regulating the brightness of photoflash lamp to appropriate brightness;
Taking module, for the shooting of glistening according to current brightness of flash lamp.
Preferably, described flash of light control module is used for: if receive photoflash lamp open command or ambient light illumination detected, be less than threshold value, judge and meet photoflash lamp unlocking condition.
Preferably, described flash of light control module is used for: open after photoflash lamp, if receive photoflash lamp out code, ambient light illumination detected and reach threshold value or detect and exited exposal model, close photoflash lamp.
Preferably, described flash of light adjustment module is used for: automatically regulate the brightness of photoflash lamp to regulate the brightness of photoflash lamp to appropriate brightness to appropriate brightness or according to the regulating command of the manual input of user.
Preferably, described flash of light adjustment module is used for: detect the exposure of focusing area, according to described exposure, automatically regulate the brightness of photoflash lamp to appropriate brightness.
A kind of flash of light image pickup method provided by the present invention, when under low light environment, (as evening) takes pictures, in shooting process, keep photoflash lamp Chang Liang, make user can live preview flash of light shooting effect, What You See Is What You Get, and can be when preview automatic or manual regulate the brightness of photoflash lamp, avoid occurring regional area overexposure or excessively dark situation, so that shooting effect is best.After user is satisfied to shooting effect, take again, can disposablely shoot oneself satisfied photo, avoided repeatedly repeating the trouble of shooting, improved shooting efficiency, promoted user's experience.
Accompanying drawing explanation
Fig. 1 is the flow chart of flash of light image pickup method one embodiment of the present invention;
Fig. 2 is the structured flowchart of filming apparatus one embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 1, flash of light image pickup method one embodiment of the present invention is proposed, described flash of light image pickup method comprises the following steps:
Step S101: open filming apparatus, enter exposal model
Described filming apparatus can be the equipment that camera, mobile phone etc. have shoot function.Filming apparatus has exposal model and image pickup mode conventionally, can mutually switch at the two.
Step S102: judge whether to meet photoflash lamp unlocking condition
Enter after exposal model, user can select flash of light take or take with natural daylight.
In some embodiment, filming apparatus comprises flash mode, automatic mode and three kinds of screening-modes of flash of light " shut " mode", flash mode is herein different from traditional flash mode, traditional flash mode is only in moment flash of light, and flash mode herein refers to that in shooting process, photoflash lamp keeps normal bright state.When user has opened flash mode, filming apparatus receives photoflash lamp open command, judges and meets photoflash lamp unlocking condition, enters step S103; When user has opened automatic mode, filming apparatus detects current ambient light illumination, if ambient light illumination is less than threshold value, judge and meet photoflash lamp unlocking condition, enter step S103, otherwise judgement does not meet photoflash lamp unlocking condition, does not open photoflash lamp, only with natural daylight, take, directly enter step S105; When user has selected flash of light " shut " mode" (taking with natural daylight), judge and do not meet photoflash lamp unlocking condition, do not open photoflash lamp, directly enter step S105.Filming apparatus can be remembered the screening-mode that user selects, when user again opens filming apparatus and enters exposal model, and the screening-mode while once exiting exposal model before automatically selecting.
In other embodiment, filming apparatus comprises common flash mode, the normal bright pattern of glistening, automatic mode and four kinds of screening-modes of flash of light " shut " mode".The difference of the present embodiment and last embodiment is to have increased the normal bright pattern of a flash of light, and when user opens this pattern, filming apparatus receives the instruction of opening photoflash lamp, judges and meets photoflash lamp unlocking condition, enters step S103; Common flash mode in the present embodiment is identical with traditional flash mode, only in moment flash of light, therefore, when user opens this pattern, judges and does not meet photoflash lamp unlocking condition, does not open photoflash lamp, directly enters step S105.
Also have in some embodiment, filming apparatus only has automatic mode, by testing environment illuminance, from the mode of the moving Chang Liang that judges whether to glisten, takes.
In addition, the filming apparatus normal bright pattern of also can giving tacit consent to glisten is taken, and enters after exposal model acquiescence and meets photoflash lamp unlocking condition, opens photoflash lamp.User can manual-lock photoflash lamp.
Step S103: open photoflash lamp
When judgement meets after photoflash lamp unlocking condition, open photoflash lamp, and keep photoflash lamp Chang Liang in whole shooting process, to illuminate current environment, user can be in preview screen direct preview flash of light shooting effect.
Step S104: regulate the brightness of photoflash lamp to appropriate brightness
Filming apparatus can regulate the brightness of photoflash lamp to regulate the brightness of photoflash lamp to appropriate brightness to appropriate brightness or according to the regulating command of the manual input of user automatically.Described appropriate brightness, can be brightness default in filming apparatus, can be also the satisfied brightness that feels reaching after user's manual adjustments.
Concrete, filming apparatus can automatically adjust to brightness of flash lamp in the following manner:
By illuminance meter or photo resistance, measure current ambient light illumination, or obtain preview picture by camera, and in preset gray scale and the illumination table of comparisons, obtain the corresponding current ambient light illumination of half-tone information of preview picture.Calculate luminance difference corresponding between default illumination condition and current ambient light illumination, wherein, default illumination condition can be default illumination threshold or luminance threshold, when being illumination threshold, calculate the illumination difference between default illumination threshold and current ambient light illumination, then illumination difference is multiplied by measuring component effectively accepts the surface area of illumination and draw corresponding luminance difference; When being luminance threshold, current ambient light illumination is multiplied by measuring component and effectively accepts the surface area of illumination and draw corresponding brightness value, then the luminance difference between the brightness value calculating and default luminance threshold.Read current photosensitivity, according to luminance difference and current photosensitivity, regulate the output current of photoflash lamp, output voltage or pulse width modulated duty cycle modulation signal regulate the brightness of photoflash lamp, as: in preset luminance difference, the output current of the photoflash lamp that photosensitivity is corresponding with obtaining luminance difference and current photosensitivity in the output current table of comparisons, or in preset luminance difference, the output voltage of the photoflash lamp that photosensitivity is corresponding with obtaining luminance difference and current photosensitivity in the output voltage table of comparisons, or in preset luminance difference, the pulse width modulated duty cycle modulation signal of the photoflash lamp that photosensitivity is corresponding with obtaining luminance difference and current photosensitivity in the output voltage table of comparisons.
Filming apparatus also can automatically adjust to brightness of flash lamp in the following manner: detect the exposure of focusing area, according to exposure, automatically regulate the brightness of photoflash lamp to appropriate brightness.Concrete, filming apparatus can pass through the exposure of transducer direct-detection focusing area outdoor scene, also can obtain preview picture by camera, and preview picture is carried out pixel or gray analysis and obtains the exposure of focusing area.If exposure is greater than predetermined threshold value or focusing area overexposure, reduce the brightness of photoflash lamp, until exposure equates with predetermined threshold value or overexposure no longer; If exposure is less than predetermined threshold value or focusing area is excessively dark, increase the brightness of photoflash lamp, until exposure equates with predetermined threshold value or not after secretly.Can be by regulating output current, output voltage or the pulse width modulated duty cycle modulation signal of photoflash lamp to regulate the brightness of photoflash lamp.If lower the brightness of photoflash lamp to minimum, focusing area or overexposure, point out user's focusing area too bright; If raise the brightness of photoflash lamp to the highest, focusing area is still excessively dark, points out user's focusing area too dark.
When user selects manual mode to regulate brightness of flash lamp, can input increase and decrease regulating command by physical button, or input increase and decrease regulating command by the increase and decrease pattern on display interface, filming apparatus regulates the brightness of photoflash lamp in real time according to regulating command, user is by preview screen live preview flash of light shooting effect, until be adjusted to oneself satisfied effect.
Step S105: take pictures
If take with natural daylight, will not glisten while taking; If take with common flash model, in moment, control the glittering shooting of once glistening of photoflash lamp; If take in the normal bright mode of photoflash lamp,, with the brightness of the current photoflash lamp after the regulating shooting of glisten, the photo of now shooting is identical with user's effect of preview in preview screen, What You See Is What You Get, the disposable photo oneself being satisfied with of shooting.And, because photoflash lamp is in normal bright state, filming apparatus can fully be exposed, therefore exposure is more evenly and under very dark environment, also can shoot the photo of better effect.
Photoflash lamp is when opening, taken after a photo, photoflash lamp is still held open state, because considering that user can repeatedly take conventionally, if having clapped one closes photoflash lamp and can bring very large inconvenience to user, so only just can close photoflash lamp in following situation: filming apparatus receives photoflash lamp out code, comprise user's manual-lock photoflash lamp or switch screening-mode, while comprising three kinds of screening-modes as filming apparatus, close flash mode, when filming apparatus comprises four kinds of screening-modes, close the normal bright pattern of flash of light; Or during automatic mode, the light luminance of environment changes, and ambient light illumination is more than or equal to threshold value; Or exited exposal model.Because just can selecting flash of light conventionally under low light environment, user takes, and therefore little to energy consumption.
Thereby, flash of light image pickup method of the present invention, when under low light environment, (as evening) takes pictures, in shooting process, keep photoflash lamp Chang Liang, make user can live preview flash of light shooting effect, What You See Is What You Get, and can be when preview automatic or manual regulate the brightness of photoflash lamp, avoid occurring regional area overexposure or excessively dark situation, so that shooting effect is best.After user is satisfied to shooting effect, take again, can disposablely shoot oneself satisfied photo, avoided repeatedly repeating the trouble of shooting, improved shooting efficiency, promoted user's experience.
Referring to Fig. 2, filming apparatus one embodiment of the present invention is proposed, described filming apparatus comprises flash of light control module, flash of light adjustment module and taking module.
Flash of light control module: for controlling the opening and closing of photoflash lamp.
After entering exposal model, flash of light control module judges whether to meet photoflash lamp unlocking condition, if so, opens photoflash lamp and makes it keep Chang Liang.Concrete:
In certain embodiments, flash of light control module detects and enters after exposal model, opens immediately photoflash lamp and makes it keep Chang Liang.Be that some filming apparatus normal bright pattern of giving tacit consent to glisten is taken, user can manual-lock photoflash lamp.
In other embodiment, flash of light control module judges whether to open photoflash lamp according to the screening-mode of the current selection of user.For example, filming apparatus has flash mode, automatic mode and three kinds of screening-modes of flash of light " shut " mode", and when having selected flash mode, flash of light control module receives photoflash lamp open command, judge and meet photoflash lamp unlocking condition, open photoflash lamp and make it keep Chang Liang; When having selected automatic mode, flash of light control module detects current ambient light illumination, if ambient light illumination is less than threshold value, judges and meets photoflash lamp unlocking condition, opens photoflash lamp and makes it keep Chang Liang, otherwise do not open photoflash lamp; When having selected flash of light " shut " mode", do not open photoflash lamp.The filming apparatus also having has common flash mode, the normal bright pattern of glistening, automatic mode and four kinds of screening-modes of flash of light " shut " mode", while selecting common flash mode, only in moment flash of light, therefore when user opens this pattern, judge and do not meet photoflash lamp unlocking condition, do not open photoflash lamp; While selecting the normal bright pattern of flash of light, flash of light control module receives the instruction of opening photoflash lamp, judges and meets photoflash lamp unlocking condition, opens photoflash lamp and makes it keep Chang Liang; Automatic mode can be to automatically switch between flash of light " shut " mode" and common flash mode, can be also at flash of light " shut " mode" and glistens and automatically switch between normal bright pattern.
Also some filming apparatus only has automatic mode, and whether flash of light control module is directly less than threshold value by testing environment illuminance automatically judges whether to open photoflash lamp and take in the mode of flash of light Chang Liang.
Flash of light control module is opened after photoflash lamp, in following situation, can close photoflash lamp: receive photoflash lamp out code, comprise user's manual-lock photoflash lamp or switch screening-mode, while comprising three kinds of screening-modes as filming apparatus, user detected and closed flash mode, filming apparatus detects user and has closed the normal bright pattern of flash of light while comprising four kinds of screening-modes; Or during automatic mode, the light luminance that environment detected changes, and ambient light illumination is more than or equal to threshold value; Or detect and exited exposal model.
Flash of light adjustment module: for regulating the brightness of photoflash lamp to appropriate brightness.
Flash of light adjustment module can regulate the brightness of photoflash lamp to regulate the brightness of photoflash lamp to appropriate brightness to appropriate brightness or according to the regulating command of the manual input of user automatically.Described appropriate brightness, can be brightness default in filming apparatus, can be also the satisfied brightness that feels reaching after user's manual adjustments.
Concrete, flash of light adjustment module can automatically adjust to brightness of flash lamp in the following manner:
By illuminance meter or photo resistance, measure current ambient light illumination, or obtain preview picture by camera, and in preset gray scale and the illumination table of comparisons, obtain the corresponding current ambient light illumination of half-tone information of preview picture.Calculate luminance difference corresponding between default illumination condition and current ambient light illumination, wherein, default illumination condition can be default illumination threshold or luminance threshold, when being illumination threshold, calculate the illumination difference between default illumination threshold and current ambient light illumination, then illumination difference is multiplied by measuring component effectively accepts the surface area of illumination and draw corresponding luminance difference; When being luminance threshold, current ambient light illumination is multiplied by measuring component and effectively accepts the surface area of illumination and draw corresponding brightness value, then the luminance difference between the brightness value calculating and default luminance threshold.Read current photosensitivity, according to luminance difference and current photosensitivity, regulate the output current of photoflash lamp, output voltage or pulse width modulated duty cycle modulation signal regulate the brightness of photoflash lamp, as: in preset luminance difference, the output current of the photoflash lamp that photosensitivity is corresponding with obtaining luminance difference and current photosensitivity in the output current table of comparisons, or in preset luminance difference, the output voltage of the photoflash lamp that photosensitivity is corresponding with obtaining luminance difference and current photosensitivity in the output voltage table of comparisons, or in preset luminance difference, the pulse width modulated duty cycle modulation signal of the photoflash lamp that photosensitivity is corresponding with obtaining luminance difference and current photosensitivity in the output voltage table of comparisons.
Flash of light adjustment module also can automatically adjust to brightness of flash lamp in the following manner: detect the exposure of focusing area, according to exposure, automatically regulate the brightness of photoflash lamp to appropriate brightness.Concrete, filming apparatus can pass through the exposure of transducer direct-detection focusing area outdoor scene, also can obtain preview picture by camera, and preview picture is carried out pixel or gray analysis and obtains the exposure of focusing area.If exposure is greater than predetermined threshold value or focusing area overexposure, reduce the brightness of photoflash lamp, until exposure equates with predetermined threshold value or overexposure no longer; If exposure is less than predetermined threshold value or focusing area is excessively dark, increase the brightness of photoflash lamp, until exposure equates with predetermined threshold value or not after secretly.Can be by regulating output current, output voltage or the pulse width modulated duty cycle modulation signal of photoflash lamp to regulate the brightness of photoflash lamp.If lower the brightness of photoflash lamp to minimum, focusing area or overexposure, point out user's focusing area too bright; If raise the brightness of photoflash lamp to the highest, focusing area is still excessively dark, points out user's focusing area too dark.
When user selects manual mode to regulate brightness of flash lamp, can input increase and decrease regulating command by physical button, or input increase and decrease regulating command by the increase and decrease pattern on display interface, flash of light adjustment module regulates the brightness of photoflash lamp in real time according to regulating command, user is by preview screen live preview flash effect, until be adjusted to oneself satisfied effect.
Taking module: for taking pictures.
If take (" shut " mode" glistens) with natural daylight, according to current environment, brightness is taken; If take with common flash model, in moment, control photoflash lamp once bright, according to the shooting of glistening of the brightness of photoflash lamp at that time.If take in the normal bright mode of photoflash lamp,, with the brightness of the current photoflash lamp shooting of glistening, the photo of now shooting is identical with user's effect of preview in preview screen, What You See Is What You Get, disposable oneself satisfied photo of shooting.And, because photoflash lamp is in normal bright state, filming apparatus can fully be exposed, therefore exposure is more evenly and under very dark environment, also can shoot the photo of better effect.
Accordingly, flash of light image pickup method of the present invention, when under low light environment, (as evening) takes pictures, in shooting process, keep photoflash lamp Chang Liang, make user can live preview flash of light shooting effect, What You See Is What You Get, and can be when preview automatic or manual regulate the brightness of photoflash lamp, avoid occurring regional area overexposure or excessively dark situation, so that shooting effect is best.After user is satisfied to shooting effect, take again, can disposablely shoot oneself satisfied photo, avoided repeatedly repeating the trouble of shooting, improved shooting efficiency, promoted user's experience.
It should be noted that, the technical characterictic in said method embodiment is all corresponding applicable at this device.
One of ordinary skill in the art will appreciate that, realizing all or part of step in above-described embodiment method can control relevant hardware by program and complete, described program can be stored in a computer read/write memory medium, and described storage medium can be ROM/RAM, disk, CD etc.
Should be understood that; these are only the preferred embodiments of the present invention; can not therefore limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a flash of light image pickup method, is characterized in that, comprises step:
Enter exposal model;
Judge whether to meet photoflash lamp unlocking condition, if so, open photoflash lamp and make it keep Chang Liang;
Regulate the brightness of photoflash lamp to appropriate brightness, the shooting of glistening accordingly.
2. flash of light image pickup method according to claim 1, is characterized in that, described in judge whether to meet photoflash lamp unlocking condition and comprise:
If receive photoflash lamp open command or ambient light illumination detected, be less than threshold value, judge and meet photoflash lamp unlocking condition.
3. flash of light image pickup method according to claim 1, is characterized in that, described method also comprises:
Open after photoflash lamp, if receive photoflash lamp out code, ambient light illumination detected and reach threshold value or detect and exited exposal model, close photoflash lamp.
4. according to the flash of light image pickup method described in claim 1-3 any one, it is characterized in that, the brightness of described adjusting photoflash lamp to appropriate brightness comprises: automatically regulate the brightness of photoflash lamp to regulate the brightness of photoflash lamp to appropriate brightness to appropriate brightness or according to the regulating command of the manual input of user.
5. according to the flash of light image pickup method described in claim 1-3 any one, it is characterized in that, the brightness of described adjusting photoflash lamp to appropriate brightness comprises: detect the exposure of focusing area, according to described exposure, automatically regulate the brightness of photoflash lamp to appropriate brightness.
6. a filming apparatus, is characterized in that, comprises flash of light control module, flash of light adjustment module and taking module, wherein:
Flash of light control module, for after entering exposal model, judges whether to meet photoflash lamp unlocking condition, if so, opens photoflash lamp and makes it keep Chang Liang;
Flash of light adjustment module, for regulating the brightness of photoflash lamp to appropriate brightness;
Taking module, for the shooting of glistening according to current brightness of flash lamp.
7. filming apparatus according to claim 6, is characterized in that, described flash of light control module is used for: if receive photoflash lamp open command or ambient light illumination detected, be less than threshold value, judge and meet photoflash lamp unlocking condition.
8. filming apparatus according to claim 6, it is characterized in that, described flash of light control module is used for: open after photoflash lamp, if receive photoflash lamp out code, ambient light illumination detected and reach threshold value or detect and exited exposal model, close photoflash lamp.
9. according to the filming apparatus described in claim 6-8 any one, it is characterized in that, described flash of light adjustment module is used for: automatically regulate the brightness of photoflash lamp to regulate the brightness of photoflash lamp to appropriate brightness to appropriate brightness or according to the regulating command of the manual input of user.
10. according to the filming apparatus described in claim 6-8 any one, it is characterized in that, described flash of light adjustment module is used for: detect the exposure of focusing area, according to described exposure, automatically regulate the brightness of photoflash lamp to appropriate brightness.
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| CN201410208911.3A CN103957363A (en) | 2014-05-16 | 2014-05-16 | Flash camera shooting method and camera shooting device |
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