CN104754238B - A kind of image formation control method and device, imaging control system - Google Patents
A kind of image formation control method and device, imaging control system Download PDFInfo
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- CN104754238B CN104754238B CN201310754547.6A CN201310754547A CN104754238B CN 104754238 B CN104754238 B CN 104754238B CN 201310754547 A CN201310754547 A CN 201310754547A CN 104754238 B CN104754238 B CN 104754238B
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Claims (17)
- A kind of 1. image formation control method, it is characterised in that including:Obtain imaging data of the imaging system under environment light condition, the imaging data include the time for exposure, gain parameter and Brightness of image;Obtain imaging data of the imaging system under the first flash conditions;Based on the first coefficient and the second coefficient, determine imaging control parameters of the imaging system under the second flash conditions, it is described into As control parameter includes at least one of time for exposure, gain parameter and white balance parameter;First coefficient is the first sudden strain of a muscle The proportionality coefficient of the imaging data under imaging data and environment light condition under optical condition, first coefficient and brightness of image ratio It is worth time for exposure that is directly proportional and being associated with the imaging data under the first flash conditions and gain parameter or association Time for exposure and gain parameter in the imaging data under environment light condition, second coefficient are the first flash strip The proportionality coefficient of the light output amount of part and the light output amount of the second flash conditions;Light output amount under second flash conditions is more than the light output amount under first flash conditions;Wherein, it is described to be based on the first coefficient and the second coefficient, determine imaging control ginseng of the imaging system under the second flash conditions Number includes:Based on formula L2 → (1+ α × β) × LpIt is the first system to obtain brightness of image L2, α of the imaging system under the second flash conditions Number, β be the second coefficient, α be associated with described in time for exposure in imaging data under the first flash conditions and gain parameter and LpIt is associated with for the brightness of image in the imaging data under the first flash conditions or α described under environment light condition Time for exposure and gain parameter and L in imaging datapFor the brightness of image in the imaging data under environment light condition;Based on formula L2 × Gain2 × T2=Const, determine the imaging system under the second flash conditions using AE algorithms Time for exposure T2 and gain parameter Gain2 in imaging control parameters;Const is constant, → represent that the symbol left part is directly proportional to right part;When the time for exposure in the imaging data that α is associated with the first flash conditions and gain parameter, LpTo be described first The brightness of image in imaging data under flash conditions, when α is associated with the exposure in the imaging data under environment light condition Between and during gain parameter, LpFor the brightness of image in the imaging data under environment light condition.
- 2. image formation control method as claimed in claim 1, it is characterised in that when the gain parameter, brightness of image and exposure Between product be constant.
- 3. image formation control method as claimed in claim 1, it is characterised in that obtaining imaging data includes:Obtain the brightness of image in imaging data;Based on acquired brightness of image, time for exposure and the gain parameter in the imaging data are obtained using AE algorithms.
- 4. image formation control method as claimed in claim 3, it is characterised in that obtain imaging system under the first flash conditions The processing speed of AE algorithms is more than imaging data of the acquisition imaging system under environment light condition and adopted used by imaging data The processing speed of AE algorithms.
- 5. image formation control method as claimed in claim 3, it is characterised in thatThe imaging data that imaging system is obtained under environment light condition includes:Based on formula L0 × Gain0 × T0= Const, the time for exposure T0 and gain parameter in the imaging data under environment light condition is obtained using AE algorithms Gain0, L0 are the brightness of image in the imaging data under environment light condition;The imaging data that imaging system is obtained under the first flash conditions includes:Based on formula L1 × Gain1 × T1= Const, time for exposure T1 and gain parameter in the imaging data under the first flash conditions are obtained using AE algorithms Gain1, L1 are the brightness of image in the imaging data under the first flash conditions, and Const is constant.
- 6. image formation control method as claimed in claim 1, it is characterised in that also include:Based on identified imaging control ginseng Number configures the imaging system, to control the imaging system to be shot.
- A kind of 7. image formation control method, it is characterised in that including:Obtain imaging data of the imaging system under environment light condition, the imaging data include the time for exposure, gain parameter and Brightness of image;Obtain imaging data of the imaging system under the first flash conditions;Based on the first coefficient and the second coefficient, determine imaging control parameters of the imaging system under the second flash conditions, it is described into As control parameter includes at least one of time for exposure, gain parameter and white balance parameter;First coefficient is the first sudden strain of a muscle The proportionality coefficient of the imaging data under imaging data and environment light condition under optical condition, first coefficient and brightness of image ratio It is worth time for exposure that is directly proportional and being associated with the imaging data under the first flash conditions and gain parameter or association Time for exposure and gain parameter in the imaging data under environment light condition, second coefficient are the first flash strip The proportionality coefficient of the light output amount of part and the light output amount of the second flash conditions;Light output amount under second flash conditions is more than the light output amount under first flash conditions;Wherein, the imaging data includes white balance parameter;It is described to be based on the first coefficient and the second coefficient, determine that imaging system exists Imaging control parameters under second flash conditions include:Based on formula W B → WBp× (1+ α × β), is determined in imaging control parameters of the imaging system under the second flash conditions White balance parameter WB, α be the first coefficient, β is the second coefficient, and α is associated with the imaging data under the first flash conditions In time for exposure and gain parameter and WBpClosed for the white balance parameter in the imaging data under the first flash conditions or α It is coupled to the time for exposure in the imaging data under environment light condition and gain parameter and WBpFor under environment light condition White balance parameter in imaging data, → represent that the symbol left part is directly proportional to right part;When the time for exposure in the imaging data that α is associated with the first flash conditions and gain parameter, WBpTo be described The white balance parameter in imaging data under one flash conditions, when α is associated with the exposure in the imaging data under environment light condition When between the light time with gain parameter, WBpFor the white balance parameter in the imaging data under environment light condition.
- 8. the image formation control method as described in claim requirement 7, it is characterised in that the gain parameter, brightness of image and exposure Product between light time is constant.
- 9. image formation control method as claimed in claim 7, it is characterised in that obtaining imaging data includes:Obtain the brightness of image in imaging data;Based on acquired brightness of image, time for exposure and the gain parameter in the imaging data are obtained using AE algorithms.
- 10. image formation control method as claimed in claim 9, it is characterised in that obtain imaging system under the first flash conditions Imaging data used by the processing speeds of AE algorithms be more than and obtain imaging data institute of the imaging system under environment light condition The processing speed of the AE algorithms of use.
- 11. image formation control method as claimed in claim 9, it is characterised in thatThe imaging data that imaging system is obtained under environment light condition includes:Based on formula L0 × Gain0 × T0= Const, the time for exposure T0 and gain parameter in the imaging data under environment light condition is obtained using AE algorithms Gain0, L0 are the brightness of image in the imaging data under environment light condition;The imaging data that imaging system is obtained under the first flash conditions includes:Based on formula L1 × Gain1 × T1= Const, time for exposure T1 and gain parameter in the imaging data under the first flash conditions are obtained using AE algorithms Gain1, L1 are the brightness of image in the imaging data under the first flash conditions, and Const is constant.
- 12. image formation control method as claimed in claim 7, it is characterised in that also include:Based on identified imaging control ginseng Number configures the imaging system, to control the imaging system to be shot.
- A kind of 13. imaging control apparatus, it is characterised in that including:First acquisition unit, suitable for obtaining imaging data of the imaging system under environment light condition, the imaging data includes exposing Between light time, gain parameter and brightness of image;Second acquisition unit, suitable for obtaining imaging data of the imaging system under the first flash conditions;Determining unit, suitable for based on the first coefficient and the second coefficient, determining imaging control of the imaging system under the second flash conditions Parameter processed, the imaging control parameters include at least one of time for exposure, gain parameter and white balance parameter;Described first Coefficient be the first flash conditions under imaging data and environment light condition under imaging data proportionality coefficient, first coefficient And the time for exposure that is associated with the imaging data under first flash conditions and gain directly proportional to brightness of image ratio Parameter is associated with the time for exposure in the imaging data under environment light condition and gain parameter, second coefficient For the proportionality coefficient of the light output amount and the light output amount of the second flash conditions of the first flash conditions;Light output amount under second flash conditions is more than the light output amount under first flash conditions;Wherein, the determining unit includes:First obtain subelement, suitable for based on formula L2 → (1+ α × β) × LpImaging system is obtained under the second flash conditions Brightness of image L2, α are the first coefficient, and β is the second coefficient, and α is associated with the imaging data under the first flash conditions Time for exposure and gain parameter and LpIt is associated with for the brightness of image in the imaging data under the first flash conditions or α Time for exposure and gain parameter and L in the imaging data under environment light conditionpTo be described under environment light condition Brightness of image in imaging data;Second obtains subelement, suitable for based on formula L2 × Gain2 × T2=Const, determining that the imaging is using AE algorithms Time for exposure T2 and gain parameter Gain2 in the imaging control parameters united under the second flash conditions;Const is constant, → represent that the symbol left part is directly proportional to right part;When the time for exposure in the imaging data that α is associated with the first flash conditions and gain parameter, LpTo be described first The brightness of image in imaging data under flash conditions, when α is associated with the exposure in the imaging data under environment light condition Between and during gain parameter, LpFor the brightness of image in the imaging data under environment light condition.
- 14. imaging control apparatus as claimed in claim 13, it is characterised in that also include:Control unit, suitable for based on really Fixed imaging control parameters configure the imaging system, to control the imaging system to be shot.
- A kind of 15. imaging control apparatus, it is characterised in that including:First acquisition unit, suitable for obtaining imaging data of the imaging system under environment light condition, the imaging data includes exposing Between light time, gain parameter and brightness of image;Second acquisition unit, suitable for obtaining imaging data of the imaging system under the first flash conditions;Determining unit, suitable for based on the first coefficient and the second coefficient, determining imaging control of the imaging system under the second flash conditions Parameter processed, the imaging control parameters include at least one of time for exposure, gain parameter and white balance parameter;Described first Coefficient be the first flash conditions under imaging data and environment light condition under imaging data proportionality coefficient, first coefficient And the time for exposure that is associated with the imaging data under first flash conditions and gain directly proportional to brightness of image ratio Parameter is associated with the time for exposure in the imaging data under environment light condition and gain parameter, second coefficient For the proportionality coefficient of the light output amount and the light output amount of the second flash conditions of the first flash conditions;Light output amount under second flash conditions is more than the light output amount under first flash conditions;Wherein, the imaging data includes white balance parameter;The determining unit includes:3rd obtains subelement, suitable for based on formula W B → WBp× (1+ α × β), determines the imaging system in the second flash strip White balance parameter WB, α in imaging control parameters under part are the first coefficient, and β is the second coefficient, and α is associated with described first Time for exposure in imaging data and gain parameter and WB under flash conditionspFor in the imaging data under the first flash conditions White balance parameter or α be associated with the time for exposure in the imaging data under environment light condition and gain parameter and WBpFor the white balance parameter in the imaging data under environment light condition, wherein, → represent the symbol left part and right side It is divided into direct ratio;When the time for exposure in the imaging data that α is associated with the first flash conditions and gain parameter, WBpTo be described The white balance parameter in imaging data under one flash conditions, when α is associated with the exposure in the imaging data under environment light condition When between the light time with gain parameter, WBpFor the white balance parameter in the imaging data under environment light condition.
- 16. imaging control apparatus as claimed in claim 15, it is characterised in that also include:Control unit, suitable for based on really Fixed imaging control parameters configure the imaging system, to control the imaging system to be shot.
- 17. a kind of imaging control system, including flash lamp, it is characterised in that also include:Such as any one of claim 13 to 16 institute The imaging control apparatus stated.
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CN108093233B (en) * | 2017-12-28 | 2020-02-18 | 努比亚技术有限公司 | Image processing method, terminal and computer readable storage medium |
CN110944116B (en) * | 2019-11-08 | 2021-06-25 | 瑞芯微电子股份有限公司 | Single flash compensation method, apparatus, device and medium based on white balance |
CN111935415B (en) * | 2020-08-18 | 2022-02-08 | 浙江大华技术股份有限公司 | Brightness adjusting method and device, storage medium and electronic device |
CN112351214B (en) * | 2020-09-22 | 2022-05-06 | 智博汽车科技(上海)有限公司 | Method and device for assisting face image acquisition, readable storage medium and vehicle |
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CN102246507A (en) * | 2008-12-19 | 2011-11-16 | 高通股份有限公司 | System and method to estimate autoexposure control and auto white balance |
CN102739965A (en) * | 2011-04-05 | 2012-10-17 | 佳能株式会社 | Image-capturing apparatus and method of controlling same |
EP2637397A1 (en) * | 2012-03-09 | 2013-09-11 | BlackBerry Limited | Methods and devices for capturing images |
CN103347152A (en) * | 2013-07-08 | 2013-10-09 | 华为终端有限公司 | Method, device and terminal for picture processing |
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CN102246507A (en) * | 2008-12-19 | 2011-11-16 | 高通股份有限公司 | System and method to estimate autoexposure control and auto white balance |
CN102739965A (en) * | 2011-04-05 | 2012-10-17 | 佳能株式会社 | Image-capturing apparatus and method of controlling same |
EP2637397A1 (en) * | 2012-03-09 | 2013-09-11 | BlackBerry Limited | Methods and devices for capturing images |
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