METHOD AND APPARATUS FOR CORRECTING LENS SHADING
    1.
    发明申请
    METHOD AND APPARATUS FOR CORRECTING LENS SHADING 有权
    矫正镜片的方法和装置

    公开(公告)号:US20110007969A1

    公开(公告)日:2011-01-13

    申请号:US12832631

    申请日:2010-07-08

    IPC分类号: G06K9/40

    CPC分类号: H04N5/3572

    摘要: A lens shading correction method and apparatus are provided for removing vignetting occurring in digital images due to lens shading. A white image captured by an image pickup device and an image pickup unit is separated into reference white images corresponding to color channels. A vignetting center having a maximum light intensity is estimated in each of the reference white images. Multiple reference segments on each of the reference white images are defined. A lens shading correction value corresponding to each pixel constituting the reference segments are calculated using a corresponding light intensity. A lens shading correction function corresponding to each reference segment is derived using a corresponding lens shading correction value. Vignetting of a general image received in a general image processing mode is removed, using the derived multiple lens shading correction functions.

    摘要翻译: 提供了一种透镜阴影校正方法和装置,用于消除由于透镜阴影而在数字图像中发生的渐晕。 由图像拾取装置和图像拾取单元拍摄的白色图像被分离为与颜色通道对应的参考白色图像。 在每个参考白色图像中估计具有最大光强度的渐晕中心。 定义每个参考白图像上的多个参考段。 使用对应的光强度计算与构成基准片段的每个像素对应的镜片阴影校正值。 使用相应的透镜阴影校正值导出与每个参考片段对应的镜片遮蔽校正功能。 使用导出的多个透镜阴影校正功能来消除在一般图像处理模式中接收的一般图像的渐晕。

    Apparatus and method for adjusting white balance in a digital imaging device
    2.
    发明申请
    Apparatus and method for adjusting white balance in a digital imaging device 有权
    用于调整数字成像装置中白平衡的装置和方法

    公开(公告)号:US20090207274A1

    公开(公告)日:2009-08-20

    申请号:US12378124

    申请日:2009-02-11

    IPC分类号: H04N9/73

    CPC分类号: H04N9/735 H04N1/6077

    摘要: A method and apparatus for adjusting a white balance in a digital imaging device. The method including the steps of: analyzing a histogram of an image to which a white balance algorithm is to be applied; classifying the image, to which the white balance algorithm is to be applied, according to color distribution determination criteria; and the white balance algorithm is applied to the image in a customized manner based on results of the classification based on color distributions. The apparatus includes an image sensor unit for photographing a subject and for creating an original image; and an image processing unit for finding an achromatic color region through estimation of a color temperature of the original image, for extracting a white point of the achromatic color region, and for adjusting a white balance of the original image.

    摘要翻译: 一种用于调整数字成像装置中的白平衡的方法和装置。 该方法包括以下步骤:分析要应用白平衡算法的图像的直方图; 根据颜色分布确定标准对应用白平衡算法的图像进行分类; 并且基于基于颜色分布的分类结果,以定制的方式将白平衡算法应用于图像。 该装置包括用于拍摄对象并用于创建原始图像的图像传感器单元; 以及图像处理单元,用于通过估计原始图像的色温来求出无彩色区域,用于提取无彩色区域的白点,并用于调整原始图像的白平衡。

    Method and apparatus for correcting lens shading
    3.
    发明授权
    Method and apparatus for correcting lens shading 有权
    用于校正透镜阴影的方法和装置

    公开(公告)号:US08406557B2

    公开(公告)日:2013-03-26

    申请号:US12832631

    申请日:2010-07-08

    IPC分类号: G06K9/40 H04N9/64 H04N5/217

    CPC分类号: H04N5/3572

    摘要: A lens shading correction method and apparatus are provided for removing vignetting occurring in digital images due to lens shading. A white image captured by an image pickup device and an image pickup unit is separated into reference white images corresponding to color channels. A vignetting center having a maximum light intensity is estimated in each of the reference white images. Multiple reference segments on each of the reference white images are defined. A lens shading correction value corresponding to each pixel constituting the reference segments are calculated using a corresponding light intensity. A lens shading correction function corresponding to each reference segment is derived using a corresponding lens shading correction value. Vignetting of a general image received in a general image processing mode is removed, using the derived multiple lens shading correction functions.

    摘要翻译: 提供了一种透镜阴影校正方法和装置,用于消除由于透镜阴影而在数字图像中发生的渐晕。 由图像拾取装置和图像拾取单元拍摄的白色图像被分离为与颜色通道对应的参考白色图像。 在每个参考白色图像中估计具有最大光强度的渐晕中心。 定义每个参考白图像上的多个参考段。 使用对应的光强度计算与构成基准片段的每个像素对应的镜片阴影校正值。 使用相应的透镜阴影校正值导出与每个参考片段对应的镜片遮蔽校正功能。 使用导出的多个透镜阴影校正功能来消除在一般图像处理模式中接收的一般图像的渐晕。