公开(公告)号：US20170078636A1

公开(公告)日：2017-03-16

申请号：US15225904

申请日：2016-08-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： JUHYUN CHO

IPC: H04N9/73

CPC classification number: H04N9/735 ,  H04N1/6027

Abstract: An auto white balancing method for image data includes calculating block variances for the image data and selecting blocks having a block variance higher than a block variance value. The method further includes selecting patches included in a gray zone defined at a color space, applying a corresponding block variance as a weight to the patches of the gray zone, adjusting a first mean value at the color space, and selecting first patch candidates belong to a first distribution at a luminance domain from among patches selected with reference to the adjusted first mean value. The method further includes selecting a shrunken gray zone corresponding to an anchor point in the gray zone and selecting second patch candidates having a second distribution at a color space and a luminance domain, from among patches included in the shrunken gray zone, and calculating a final gain for the image data by combining a first RGB gain and a second RGB gain respectively extracted from the first patch candidates and the second patch candidates.

Abstract translation: 用于图像数据的自动白平衡方法包括计算图像数据的块方差，并且选择块方差高于块方差值的块。 该方法还包括选择包括在颜色空间中定义的灰色区域中的色块，将对应的块方差作为权重施加到灰区的斑块，调整色空间的第一平均值，以及选择属于 参照调整后的第一平均值选择的补丁中的亮度域的第一分布。 该方法还包括选择与灰区中的锚点相对应的收缩灰色区域，并从包含在收缩灰色区域中的斑块中选择在颜色空间和亮度域具有第二分布的第二补片候选，并计算最终 通过组合从第一补丁候选和第二补丁候选分别提取的第一RGB增益和第二RGB增益来获得图像数据的增益。

公开(公告)号：US20140139706A1

公开(公告)日：2014-05-22

申请号：US14079063

申请日：2013-11-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： YUN-SEONG JANG ,  JONGSEONG CHOI ,  JUHYUN CHO

IPC: H04N5/217

CPC classification number: H04N9/045

Abstract: An image signal processor receives a Bayer image signal from an image sensor and converts the Bayer image signal into a normal image signal. The image signal processor includes a memory configured to store a table including reference brightness values and variation values according to the reference brightness values; a shot noise cancelation unit configured to calculate a reference brightness value of the Bayer image signal, select a variation value in the table of the memory according to the calculated reference brightness value, and perform shot noise cancelling on the Bayer image signal based on the selected variation value to generate a modified Bayer image signal; and an interpolation unit configured to generate the normal image signal by performing interpolation based on the modified Bayer image signal.

Abstract translation: 图像信号处理器从图像传感器接收拜耳图像信号，并将拜耳图像信号转换成正常图像信号。 图像信号处理器包括被配置为根据参考亮度值存储包括参考亮度值和变化值的表格的存储器; 拍摄噪声消除单元，被配置为计算拜耳图像信号的参考亮度值，根据所计算的参考亮度值选择存储器的表中的变化值，并且基于所选择的对所述拜耳图像信号执行拍摄噪声消除 变化值以生成修改的拜耳图像信号; 以及内插单元，被配置为通过基于修改的拜耳图像信号执行内插来生成正常图像信号。