WO2022267213A1 - 一种提高摄像头在终端效果一致性的方法 - Google Patents

一种提高摄像头在终端效果一致性的方法 Download PDF

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WO2022267213A1
WO2022267213A1 PCT/CN2021/114737 CN2021114737W WO2022267213A1 WO 2022267213 A1 WO2022267213 A1 WO 2022267213A1 CN 2021114737 W CN2021114737 W CN 2021114737W WO 2022267213 A1 WO2022267213 A1 WO 2022267213A1
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modules
module
total
average
awb
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French (fr)
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骆淑君
张挺阳
张程昊
许烨焓
杜航
沈舒航
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横店集团东磁有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70Circuitry for compensating brightness variation in the scene
    • H04N23/71Circuitry for evaluating the brightness variation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00Diagnosis, testing or measuring for television systems or their details
    • H04N17/002Diagnosis, testing or measuring for television systems or their details for television cameras
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/64Circuits for processing colour signals
    • H04N9/73Colour balance circuits, e.g. white balance circuits or colour temperature control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/77Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase

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  • the invention relates to the technical field of cameras, in particular to a method for improving the consistency of camera effects in terminals.
  • OTP optical time difference
  • each module needs to be calibrated.
  • industries with large shipments have a negative impact on production efficiency. Due to the high requirements and restrictions, although the method of cell-by-cell calibration is guaranteed in effect, it will slow down the production progress. For the highly competitive and ever-changing mobile phone market, the method of cell-by-cell calibration is not realistic.
  • AWB White Balance
  • LSC Longs Shading Correction
  • the distortion calibration method includes: selecting a preset number of target modules; calculating the distortion deviation of each target module, and the distortion deviation is used to characterize the distortion correction mapping grid of each target module and the average of all target modules Distortion corrects the deviation of the mapping grid; eliminates modules whose distortion deviation is greater than a preset threshold, and returns to the step of calculating the distortion deviation of each target module, and calculates the update distortion deviation of each target module in the eliminated target module ; select the target module corresponding to the minimum update distortion deviation as a typical module; use the distortion calibration parameters of the typical module as the distortion correction parameters; the distortion correction parameters are used to correct the distortion of any lens module.
  • the above technical solution does not consider the influence of white balance and LSC on consistency, and there are differences in the methods for selecting typical values.
  • the present invention mainly solves the technical problem that the original technical solution only deals with the white balance and is not compatible with the parameter LSC, and provides a method for improving the consistency of the effect of the camera in the terminal. By reducing the imaging difference of the modules, the consistency of the terminal imaging is improved.
  • White balance and LSC are the key parameters that affect the imaging effect. Select the typical modules and limit samples of white balance and LSC, and use the effect parameters of the typical modules as the terminal effect parameters to improve the consistency of the terminal effect of the modules. In addition, through the limit The sample adjusts the effect parameters of typical modules to make the parameters more compatible.
  • the present invention comprises the following steps:
  • S1 builds the shooting environment; light source: color temperature 5100K ⁇ 100K, illuminance 1000lux ⁇ 100lux (not limited to this condition, different requirements can be adjusted), others: ensure uniform and stable light source brightness, avoid the influence of stray light.
  • S2 selects typical modules and limited modules of AWB characteristic parameters
  • S3 selects typical modules and limited modules of LSC characteristic parameters
  • S4 selects the Total Golden of the typical module of AWB and LSC feature synthesis
  • S5 uses the effect parameters of typical modules as the terminal effect parameters to improve the consistency of the terminal effect of the modules
  • S6 judges the effect parameters of typical modules through the limited modules.
  • the effect parameters of typical modules are judged by comparing the consistency between the selected limited modules and typical modules in the terminal effect. If the effects of limited modules and typical modules are inconsistent, it means that there is a deviation in the effect parameters of typical modules. For typical modules to readjust the effect parameters.
  • step S2 carries out AWB characteristic parameter typical module and limit module selection and specifically includes:
  • step S2.3 calculates R/G, B/G, G_average:
  • R/G (R_average-BLC)/(G_average-BLC)
  • G_average ((Gr_average-BLC)+(Gb_average-BLC))/2
  • BLC is the black level correction value.
  • the selection rule of the step S2.6 is:
  • Awb Typical Golden Total_Awb_Dist Min, which is the module with the smallest Total_Awb_Dist value;
  • Awb_limit Total_Awb_Dist Max, which is the module with the largest Total_Awb_Dist value
  • R/G Limit R/G Max, R/G Min
  • B/G Limit B/G Max, B/G Min.
  • step S3 carries out LSC characteristic parameter typical module and limit module selection and specifically includes:
  • the step S3.2 acquisition of Y shading brightness uniform value area and Color shading color uniform value area specifically includes:
  • the selection rule in step S3.3 is:
  • R/G shading Limit RG_Ave Max, RG_Ave Min
  • B/G shading Limit BG_Ave Max, BG_Ave Min.
  • the integrated typical module Total Golden in the step S4 is a module selected from the top 30 of Total_Awb_Dist and lsc_total_Dist, if there is no module satisfying the conditions, it is selected from the top 40 of Total_Awb_Dist and lsc_total_Dist .
  • the beneficial effects of the present invention are: by reducing the imaging difference of modules, improving the consistency of terminal imaging, white balance and LSC are the key parameters affecting the imaging effect, selecting typical modules and limit samples of white balance and LSC, through typical modules
  • the effect parameters are used as the terminal effect parameters to improve the consistency of the terminal effect of the module.
  • the effect parameters of the typical modules are adjusted through the limited samples to make the compatibility of the parameters better.
  • Fig. 1 is a kind of flowchart of the present invention.
  • Fig. 2 is a value area diagram of brightness uniformity and color uniformity based on the MTK platform of the present invention.
  • Embodiment A method for improving the consistency of the effect of the camera in the terminal according to this embodiment, as shown in FIG. 1 , includes
  • AWB characteristic parameter Golden/Limit module selection (AWB typical module and limit module)
  • Light source color temperature 5100K ⁇ 100K, illuminance 1000lux ⁇ 100lux (not limited to this condition, different requirements can be adjusted)
  • R/G (R_average-BLC)/(G_average-BLC)
  • G_average ((Gr_average-BLC)+(Gb_average-BLC))/2
  • Awb Typical Golden Total_Awb_Dist Min, which is the module with the smallest Total_Awb_Dist value;
  • Awb_limit Total_Awb_Dist Max, which is the module with the largest Total_Awb_Dist value
  • R/G Limit R/G Max, R/G Min
  • Golden sample is the module sample with the smallest Total_Awb_Dist, and both R/G and B/G are within ⁇ 1% of the average value.
  • LSC characteristic parameter Golden/Limit module selection (LSC typical module and limit module)
  • the position of the frame-taking Block can be adjusted according to the platform or other requirements.
  • the following is an example of a situation based on the MTK platform
  • R/G shading Limit RG_Ave Max, RG_Ave Min
  • Total golden is the module selected from the top 30 of both Total_Awb_Dist and lsc_total_Dist. If the modules in the top 30 are not satisfied, the top 40 modules will be used.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Color Television Image Signal Generators (AREA)
  • Studio Devices (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

一种提高摄像头在终端效果一致性的方法,包括以下步骤:构建拍摄环境;进行AWB特征参数典型模组和限度模组挑选;进行LSC特征参数典型模组和限度模组挑选;进行AWB和LSC特征综合典型模组Total Golden挑选;通过典型模组的效果参数作为终端效果参数,提高模组在终端效果的一致性;通过限度模组进行典型模组的效果参数判断。该技术方案通过降低模组成像差异,提高终端成像一致性,白平衡和LSC是影响成像效果的关键参数,挑选白平衡和LSC的典型模组和限度样品,通过典型模组的效果参数作为终端效果参数,提高模组在终端效果的一致性,另外通过限度样品对典型模组的效果参数进行调整,使得参数的兼容性更好。

Description

一种提高摄像头在终端效果一致性的方法 技术领域
本发明涉及摄像头技术领域,尤其涉及一种提高摄像头在终端效果一致性的方法。
背景技术
摄像头模组在生产制造时会因为组装公差、来料差异等因素造成每个摄像头的成像效果都会有差异。OTP是sensor(传感器)厂家预留的一小块存储空间用来保存一些静态数据,使用方式取决于使用sensor开发产品的下游厂家,例如手机camera相机模组产线会对每颗模组都做一些参数标定或者修正,例如AWB、LSC、AF等,通常会把sensor info(传感器信息)、标定结果或者修正量写到sensor OTP(传感器动态口令)存储中,手机每次开机都从OTP中读取这些标定结果或者修正量,和量产软件中的固定参数相结合,就能得到比较不错的效果。但是镜头本身存在一些个体差异,想要获得最佳的畸变矫正效果,理论上需要对每一颗模组都要进行标定,但是,实际生产过程中,出货量较大的行业对生产效率有很高的要求和限制,逐颗标定的办法虽然在效果上有保障,但是会拖慢生产进度,对于竞争激烈和瞬息万变的手机市场,逐颗标定的办法并不现实。
AWB(白平衡)和LSC(Lens Shading Correction)是影响终端效果的关键参数,通常终端只会存在一套软件参数来适配模组,但是由于摄像头模组的参数差异使得一套参数出来的效果不尽人意,同一个环境,不同的摄像头拍摄效果或明或暗,严重的还会偏色,由此提出使用典型模组和限度模组来调和摄像头差异引起的效果差异,并提供挑选典型模组和限度模组的方法。
中国专利文献CN112465917A公开了一种“镜头模组的畸变标定方法、系统、设备及存储介质”。所述畸变标定方法包括:选取一预设数量的目标模组;计算 每个目标模组的畸变偏差,畸变偏差用于表征每个目标模组的畸变矫正映射网格与所有目标模组的平均畸变矫正映射网格的偏差;剔除畸变偏差大于预设阈值的模组,并返回计算每个目标模组的畸变偏差的步骤,计算剔除后的目标模组中每个目标模组的更新畸变偏差;选取最小更新畸变偏差对应的目标模组作为典型模组;将典型模组的畸变标定参数作为畸变矫正参数;畸变矫正参数用于对任意镜头模组进行畸变矫正。上述技术方案未针对考虑白平衡和LSC对一致性的影响,且挑选典型值的方法存在差异。
发明内容
本发明主要解决原有的技术方案只对白平衡做了处理,不兼容参数LSC的技术问题,提供一种提高摄像头在终端效果一致性的方法,通过降低模组成像差异,提高终端成像一致性,白平衡和LSC是影响成像效果的关键参数,挑选白平衡和LSC的典型模组和限度样品,通过典型模组的效果参数作为终端效果参数,提高模组在终端效果的一致性,另外通过限度样品对典型模组的效果参数进行调整,使得参数的兼容性更好。
本发明的上述技术问题主要是通过下述技术方案得以解决的:本发明包括以下步骤:
S1构建拍摄环境;光源:色温5100K±100K,照度1000lux±100lux(不限于该条件,不同要求可以调整),其他:保证光源亮度均匀稳定,避免杂光影响。
S2进行AWB特征参数典型模组和限度模组挑选;
S3进行LSC特征参数典型模组和限度模组挑选;
S4进行AWB和LSC特征综合典型模组Total Golden挑选;
S5通过典型模组的效果参数作为终端效果参数,提高模组在终端效果的一致性;
S6通过限度模组进行典型模组的效果参数判断。通过比较挑选的限定模组与典型模组在终端效果的一致性进行典型模组的效果参数判断,若限定模组与典型模组的效果不一致说明典型模组效果参数存在偏差,对典型模组的效果参数进行重新调整。
作为优选,所述的步骤S2进行AWB特征参数典型模组和限度模组挑选具体包括:
S2.1对着稳定面光源拍摄Raw图片;
S2.2选取Raw图片中心区域,图宽/10*图高/10,作为AWB测量区域;
S2.3记录所选区域的R_average,G_average,B_average并计算出R/G,B/G,G_average;
S2.4选取n个模组,记录每颗模组的R/G、B/G数据,并以R/G值为横轴,B/G值为纵轴,绘制所有测试模组的散点图;
S2.5计算所有模组的R/G和B/G的平均值分别记为(R/G)ave和(B/G)ave,并计算每颗模组的R/G和B/G与(R/G)ave和(B/G)ave差异记为Total_Awb_Dist;
S2.6设定挑选规则;
S2.7将Total_Awb_Dist最小,且R/G和B/G都在平均值的±1%之内的模组选取作为模组样本Golden sample。
作为优选,所述的步骤S2.1拍摄Raw图片时保证摄像头表面与面光源三者之间完全贴合,Raw图避免Flicker现象,增益Gain为1倍,并且中心绿色分量G通道符合平台MTK和高通要求,中心G值取图大小ROI,其中ROI_x,ROI_y=1/10 Image Width图宽,1/10 Image Height图高。
作为优选,所述的步骤S2.3计算出R/G,B/G,G_average:
R/G=(R_average-BLC)/(G_average-BLC)
B/G=(B_average-BLC)/(G_average-BLC)
G_average=((Gr_average-BLC)+(Gb_average-BLC))/2
其中BLC为黑电平矫正值,记录所选区域的R_average,G_average,B_average需减去BLC或者矫正暗电流OB。
作为优选,所述的步骤S2.5中Total_Awb_Dist的计算公式如下所示:
k:模组编号,k∈(1.,n)
Figure PCTCN2021114737-appb-000001
Figure PCTCN2021114737-appb-000002
Figure PCTCN2021114737-appb-000003
作为优选,所述的步骤S2.6的挑选规则为:
Awb Typical Golden=Total_Awb_Dist Min,即为Total_Awb_Dist值最小的模组;
Awb_limit=Total_Awb_Dist Max,即为Total_Awb_Dist值最大的模组
R/G Limit=R/G Max,R/G Min
B/G Limit=B/G Max,B/G Min。
作为优选,所述的步骤S3进行LSC特征参数典型模组和限度模组挑选具体包括:
S3.1对着稳定面光源拍摄Raw图片;保证摄像头表面与面光源三者之间完全贴合,1cm-2cm,
S3.2获取Y shading亮度均匀取值区域和Color shading色彩均匀取值区域;
S3.3设定挑选规则;
S3.4将lsc_total_Dist最小,且Y shading排名前50的模组选取作为模组样本Golden sample。
作为优选,所述的步骤S3.2获取Y shading亮度均匀取值区域和Color shading色彩均匀取值区域具体包括:
Y shaidng:基于截图m个Block内校准后的亮度值数据平方根求和Δ(Y) k
Color shading:基于截图m个Block内R/G,B/G的平方根求和Δ(R/G) k、Δ(B/G) k
k:模组编号,k∈(1.,n)
[i,j]:blocks
Figure PCTCN2021114737-appb-000004
Figure PCTCN2021114737-appb-000005
Figure PCTCN2021114737-appb-000006
Figure PCTCN2021114737-appb-000007
Figure PCTCN2021114737-appb-000008
Figure PCTCN2021114737-appb-000009
Figure PCTCN2021114737-appb-000010
作为优选,所述的步骤S3.3挑选规则为:
LSC Typical Golden=Min lsc_total_Dist
LSC Total limit=Max lsc_total_Dist
Y Limit=Max Y_Distance_i
R/G shading Limit=RG_Ave Max,RG_Ave Min
B/G shading Limit=BG_Ave Max,BG_Ave Min。
作为优选,所述的步骤S4综合典型模组Total Golden为Total_Awb_Dist与lsc_total_Dist均排名前30中挑选的模组,若没有满足条件的模组,则从Total_Awb_Dist与lsc_total_Dist均排名前40的模组中挑选。
本发明的有益效果是:通过降低模组成像差异,提高终端成像一致性,白平衡和LSC是影响成像效果的关键参数,挑选白平衡和LSC的典型模组和限度样品,通过典型模组的效果参数作为终端效果参数,提高模组在终端效果的一致性,另外通过限度样品对典型模组的效果参数进行调整,使得参数的兼容性更好。
附图说明
图1是本发明的一种流程图。
图2是本发明的一种基于MTK平台的亮度均匀和色彩均匀取值区域图。
具体实施方式
下面通过实施例,并结合附图,对本发明的技术方案作进一步具体的说明。
实施例:本实施例的一种提高摄像头在终端效果一致性的方法,如图1所示,包括
AWB特征参数Golden/Limit module挑选(AWB的典型模组和限度模组)
一、拍摄环境
1.光源:色温5100K±100K,照度1000lux±100lux(不限于该条件,不同要求可以调整)
2.其他:保证光源亮度均匀稳定,避免杂光影响
二、挑选方法:
1.对着稳定面光源拍Raw图片(原图,未作处理),保证摄像头表面与面光源三者之间完全贴合
2.Raw图需避免Flicker现象(闪频),增益Gain为1x(1倍),保证中心绿色分量G通道符合平台(MTK,高通)要求,中心G值取图大小ROI(Region Of Interest)(ROI_x,ROI_y=1/10图宽Image Width,1/10 Image Height图高)
3.选取图片中心区域(W/10xH/10)作为AWB测量区域
4.记录所选区域的R_average,G_average,B_average(需要减去BLC(black level correction)或者我们俗称的矫正暗电流(OB)).并且算出:
R/G=(R_average-BLC)/(G_average-BLC)
B/G=(B_average-BLC)/(G_average-BLC)
G_average=((Gr_average-BLC)+(Gb_average-BLC))/2
5.选取一定数量n模组,记录每颗模组的R/G、B/G数据,并绘制所有测试模组的散点图(以R/G值为横轴,B/G值为纵轴),计算所有模组的R/G和B/G的平均值分别记为(R/G)ave和(B/G)ave,并计算每颗模组的R/G和B/G与(R/G)ave和(B/G)ave差异记为Total_Awb_Dist,计算公式如下所示
k:模组编号,例如1-n
Figure PCTCN2021114737-appb-000011
Figure PCTCN2021114737-appb-000012
Figure PCTCN2021114737-appb-000013
6.挑选规则:
Awb Typical Golden=Total_Awb_Dist Min,即为Total_Awb_Dist值最小的模组;
Awb_limit=Total_Awb_Dist Max,即为Total_Awb_Dist值最大的模组
R/G Limit=R/G Max,R/G Min
B/G Limit=B/G Max,B/G Min
7.Golden sample为Total_Awb_Dist最小,且R/G和B/G都在平均值的±1%之内的模组样本。
LSC特征参数Golden/Limit module挑选(LSC的典型模组和限度模组)
1.对着稳定面光源拍Raw图片,保证摄像头表面与面光源三者之间完全贴合(1cm-2cm)
2.Raw图需避免Flicker现象(闪频),增益Gain为1x(1倍),保证中心绿色分量G通道符合平台(MTK,高通)要求,中心G值取图大小ROI(Region Of Interest)(ROI_x,ROI_y=1/10图宽Image Width,1/10 Image Height图高)
3.Y shading亮度均匀/Color shading色彩均匀取值区域说明:
取框Block的位置可以根据平台或者其他要求调整,以下是基于MTK平台的一种情况的实例说明
Y shaidng:基于截图m个Block内校准后的亮度值数据平方根求和Δ(Y) k
Color shading:基于截图m个Block内R/G,B/G的平方根求和Δ(R/G) k、Δ(B/G) k
如图2所示,
k:模组编号,例如1-n
[i,j]:blocks,图例m=13
Figure PCTCN2021114737-appb-000014
Figure PCTCN2021114737-appb-000015
Figure PCTCN2021114737-appb-000016
Figure PCTCN2021114737-appb-000017
Figure PCTCN2021114737-appb-000018
Figure PCTCN2021114737-appb-000019
Figure PCTCN2021114737-appb-000020
4.挑选规则:
LSC Typical Golden=Min lsc_total_Dist
LSC Total limit=Max lsc_total_Dist
Y Limit=Max Y_Distance_i
R/G shading Limit=RG_Ave Max,RG_Ave Min
B/G shading Limit=BG_Ave Max,BG_Ave Min
5.Golden sample为lsc_total_Dist最小且Y shading排名前50
AWB和LSC特征的综合Golden/Limit挑选(Total Golden/Limit)
Total golden为Total_Awb_Dist与lsc_total_Dist均排名前30中挑选的模组,若前30中的模组不能满足,则取排名前40的模组。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。
尽管本文较多地使用了典型模组、限度模组等术语,但并不排除使用其它术语的可能性。使用这些术语仅仅是为了更方便地描述和解释本发明的本质;把它们解释成任何一种附加的限制都是与本发明精神相违背的。

Claims (10)

  1. 一种提高摄像头在终端效果一致性的方法,其特征在于,包括以下步骤:
    S1构建拍摄环境;
    S2进行AWB特征参数典型模组和限度模组挑选;
    S3进行LSC特征参数典型模组和限度模组挑选;
    S4进行AWB和LSC特征综合典型模组Total Golden挑选;
    S5通过典型模组的效果参数作为终端效果参数,提高模组在终端效果的一致性;
    S6通过限度模组进行典型模组的效果参数判断。
  2. 根据权利要求1所述的一种提高摄像头在终端效果一致性的方法,其特征在于,所述步骤S2进行AWB特征参数典型模组和限度模组挑选具体包括:
    S2.1对着稳定面光源拍摄Raw图片;
    S2.2选取Raw图片中心区域,图宽/10*图高/10,作为AWB测量区域;
    S2.3记录所选区域的R_average,G_average,B_average并计算出R/G,B/G,G_average;
    S2.4选取n个模组,记录每颗模组的R/G、B/G数据,并以R/G值为横轴,B/G值为纵轴,绘制所有测试模组的散点图;
    S2.5计算所有模组的R/G和B/G的平均值分别记为(R/G)ave和(B/G)ave,并计算每颗模组的R/G和B/G与(R/G)ave和(B/G)ave差异记为Total_Awb_Dist;
    S2.6设定挑选规则;
    S2.7将Total_Awb_Dist最小,且R/G和B/G都在平均值的±1%之内的模组选取作为模组样本Golden sample。
  3. 根据权利要求2所述的一种提高摄像头在终端效果一致性的方法,其特征在于,所述步骤S2.1拍摄Raw图片时保证摄像头表面与面光源三者之间完全贴合, Raw图避免Flicker现象,增益Gain为1倍,并且中心绿色分量G通道符合平台MTK和高通要求,中心G值取图大小ROI,其中ROI_x,ROI_y=1/10 Image Width图宽,1/10 Image Height图高。
  4. 根据权利要求2所述的一种提高摄像头在终端效果一致性的方法,其特征在于,所述步骤S2.3计算出R/G,B/G,G_average:
    R/G=(R_average-BLC)/(G_average-BLC)
    B/G=(B_average-BLC)/(G_average-BLC)
    G_average=((Gr_average-BLC)+(Gb_average-BLC))/2
    其中BLC为黑电平矫正值,记录所选区域的R_average,G_average,B_average需减去BLC或者矫正暗电流OB。
  5. 根据权利要求2所述的一种提高摄像头在终端效果一致性的方法,其特征在于,所述步骤S2.5中Total_Awb_Dist的计算公式如下所示:
    k:模组编号,k∈(1.,n)
    Figure PCTCN2021114737-appb-100001
    Figure PCTCN2021114737-appb-100002
    Figure PCTCN2021114737-appb-100003
  6. 根据权利要求1所述的一种提高摄像头在终端效果一致性的方法,其特征在于,所述步骤S2.6的挑选规则为:
    Awb Typical Golden=Total_Awb_Dist Min,即为Total_Awb_Dist值最小的模组;
    Awb_limit=Total_Awb_Dist Max,即为Total_Awb_Dist值最大的模组R/G Limit=R/G Max,R/G Min
    B/G Limit=B/G Max,B/G Min。
  7. 根据权利要求1所述的一种提高摄像头在终端效果一致性的方法,其特征在于,所述步骤S3进行LSC特征参数典型模组和限度模组挑选具体包括:
    S3.1对着稳定面光源拍摄Raw图片;
    S3.2获取Y shading亮度均匀取值区域和Color shading色彩均匀取值区域;
    S3.3设定挑选规则;
    S3.4将lsc_total_Dist最小,且Y shading排名前50的模组选取作为模组样本Golden sample。
  8. 根据权利要求7所述的一种提高摄像头在终端效果一致性的方法,其特征在于,所述步骤S3.2获取Y shading亮度均匀取值区域和Color shading色彩均匀取值区域具体包括:
    Y shaidng:基于截图m个Block内校准后的亮度值数据平方根求和Δ(Y) k
    Color shading:基于截图m个Block内R/G,B/G的平方根求和Δ(R/G) k、Δ(B/G) k
    k:模组编号,k∈(1.,n)
    [i,j]:blocks
    Figure PCTCN2021114737-appb-100004
    Figure PCTCN2021114737-appb-100005
    Figure PCTCN2021114737-appb-100006
    Figure PCTCN2021114737-appb-100007
    Figure PCTCN2021114737-appb-100008
    Figure PCTCN2021114737-appb-100009
    Figure PCTCN2021114737-appb-100010
  9. 根据权利要求7所述的一种提高摄像头在终端效果一致性的方法,其特征在于,所述步骤S3.3挑选规则为:
    LSC Typical Golden=Min lsc_total_Dist
    LSC Total limit=Max lsc_total_Dist
    Y Limit=Max Y_Distance_i
    R/G shading Limit=RG_Ave Max,RG_Ave Min
    B/G shading Limit=BG_Ave Max,BG_Ave Min。
  10. 根据权利要求1所述的一种提高摄像头在终端效果一致性的方法,其特征在于,所述步骤S4综合典型模组Total Golden为Total_Awb_Dist与lsc_total_Dist均排名前30中挑选的模组,若没有满足条件的模组,则从Total_Awb_Dist与lsc_total_Dist均排名前40的模组中挑选。
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