公开(公告)号：US08145014B2

公开(公告)日：2012-03-27

申请号：US12188771

申请日：2008-08-08

申请人： Boo Dong Kwak ,  Bong Soon Kang ,  Joo Young Ha ,  Sung Mok Lee ,  Won Woo Jang ,  Won Tae Choi ,  Joo Hyun Kim

发明人： Boo Dong Kwak ,  Bong Soon Kang ,  Joo Young Ha ,  Sung Mok Lee ,  Won Woo Jang ,  Won Tae Choi ,  Joo Hyun Kim

IPC分类号： G06K9/32

CPC分类号： H04N9/646 ,  H04N9/045

摘要： There is provided an apparatus for removing color noise including: a color interpolation unit performing color interpolation on a bayer pattern image output from an image sensor; a high-pass filter unit performing high-pass filtering on each of the pixels of the bayer pattern image to generate high-pass filtered values of each of the pixels; a high frequency region determining unit comparing pixel values of a target pixel, from which color noise is removed, and pixels adjacent to the target pixel with the high-pass filtered values to determine whether the target pixel is included in a high frequency region; and a color noise region determining unit using differences between color values of the target pixel interpolated by the color interpolation unit and determining whether the target pixel is included in a color noise region when it is determined that the target pixel is included in the high frequency region.

摘要翻译： 提供了一种用于去除颜色噪声的装置，包括：彩色内插单元，对从图像传感器输出的拜耳图案图像执行彩色插值; 高通滤波器单元对拜耳图案图像的每个像素执行高通滤波以产生每个像素的高通滤波值; 比较高频区域确定单元，其将通过高通滤波值与目标像素相邻的像素与去除了颜色噪声的像素的像素值进行比较，以确定目标像素是否包括在高频区域中; 以及颜色噪声区域确定单元，其使用由所述颜色内插单元内插的所述目标像素的颜色值之间的差异，并且当确定所述目标像素包括在所述高频区域中时，确定所述目标像素是否包括在颜色噪声区域中 。

公开(公告)号：US08614750B2

公开(公告)日：2013-12-24

申请号：US12588516

申请日：2009-10-19

申请人： Joo Hyun Kim ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

发明人： Joo Hyun Kim ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

IPC分类号： H04N5/228 ,  H04N9/73

CPC分类号： H04N9/735

摘要： An apparatus for auto white balance includes a histogram generation unit writing respective histograms of Cb values and Cr values with regard to pixels included in an input image frame, a single-tone determination unit comparing respective maximum values of the histograms of Cb values and Cr values with a first threshold value, and determining the input image frame as a single-tone image if at least one of the maximum values is higher than the first threshold value, and an auto white balance gain computation unit computing and an auto white balance gain by using color information of an input image frame and outputting the computed auto white balance gain, wherein if the input image frame is determined to be a single-tone image, the auto white balance gain computation unit outputs an auto white balance gain computed with respect to a previous input image frame.

摘要翻译： 一种用于自动白平衡的装置包括直方图生成单元，其针对包括在输入图像帧中的像素写入相应的Cb值和Cr值的直方图;单色调确定单元，将Cb值和Cr值的直方图的相应最大值进行比较 具有第一阈值，并且如果所述最大值中的至少一个高于所述第一阈值，则将所述输入图像帧确定为单色图像，并且自动白平衡增益计算单元计算和自动白平衡增益由 使用输入图像帧的颜色信息并输出所计算的自动白平衡增益，其中如果输入图像帧被确定为单色图像，则自动白平衡增益计算单元输出相对于 先前的输入图像帧。

公开(公告)号：US20100194991A1

公开(公告)日：2010-08-05

申请号：US12588516

申请日：2009-10-19

申请人： Joo Hyun Kim ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

发明人： Joo Hyun Kim ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

IPC分类号： H04N9/73 ,  G06K9/00

CPC分类号： H04N9/735

摘要： An apparatus for auto white balance includes a histogram generation unit writing respective histograms of Cb values and Cr values with regard to pixels included in an input image frame, a single-tone determination unit comparing respective maximum values of the histograms of Cb values and Cr values with a first threshold value, and determining the input image frame as a single-tone image if at least one of the maximum values is higher than the first threshold value, and an auto white balance gain computation unit computing and an auto white balance gain by using color information of an input image frame and outputting the computed auto white balance gain, wherein if the input image frame is determined to be a single-tone image, the auto white balance gain computation unit outputs an auto white balance gain computed with respect to a previous input image frame.

摘要翻译： 一种用于自动白平衡的装置包括直方图生成单元，其针对包括在输入图像帧中的像素写入相应的Cb值和Cr值的直方图;单色调确定单元，将Cb值和Cr值的直方图的相应最大值进行比较 具有第一阈值，并且如果所述最大值中的至少一个高于所述第一阈值，则将所述输入图像帧确定为单色图像，并且自动白平衡增益计算单元计算和自动白平衡增益由 使用输入图像帧的颜色信息并输出所计算的自动白平衡增益，其中如果输入图像帧被确定为单色图像，则自动白平衡增益计算单元输出相对于 先前的输入图像帧。

公开(公告)号：US08666151B2

公开(公告)日：2014-03-04

申请号：US12929036

申请日：2010-12-23

申请人： Joo Hyun Kim ,  Won Tae Choi ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Hak Yong Han

发明人： Joo Hyun Kim ,  Won Tae Choi ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Hak Yong Han

IPC分类号： G06K9/00

CPC分类号： H04N1/4074 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/10024

摘要： An apparatus for enhancing the visibility of color images includes: a luminance value cumulative distribution calculator that calculates a cumulative distribution function of the number of pixels from a minimum value of luminance values; a baseband signal determining unit that determines baseband signal pixels having luminance values smaller than a threshold level; a luminance compensation value generator that generates luminance compensation values to apply the lower-level luminance compensation values as the pixels have higher-level luminance values, for the pixels having the luminance values larger than the threshold level; a luminance gain generator that determines a luminance gain applied to the luminance compensation values according to a mean luminance values of the input images and the level of the luminance values of the pixels to which the luminance compensation values are applied; and a luminance value enhancing unit that summing the luminance compensation values including the gain with the luminance values.

摘要翻译： 用于提高彩色图像的可见度的装置包括：亮度累积分布计算器，从亮度值的最小值计算像素数的累积分布函数; 基带信号确定单元，确定具有小于阈值电平的亮度值的基带信号像素; 对于具有大于阈值水平的亮度值的像素，产生用于将作为像素的下位亮度补偿值应用于更高亮度的亮度补偿值的亮度补偿值发生器; 亮度增益发生器，其根据输入图像的平均亮度值和施加了亮度补偿值的像素的亮度值的电平来确定施加到亮度补偿值的亮度增益; 以及亮度值增强单元，其将包括增益的亮度补偿值与亮度值相加。

公开(公告)号：US20110249890A1

公开(公告)日：2011-10-13

申请号：US12929036

申请日：2010-12-23

申请人： Joo Hyun Kim ,  Won Tae Choi ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Hak Yong Han

发明人： Joo Hyun Kim ,  Won Tae Choi ,  Bong Soon Kang ,  Sung Mok Lee ,  Won Woo Jang ,  Hak Yong Han

IPC分类号： G06K9/00

CPC分类号： H04N1/4074 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/10024

摘要： An apparatus for enhancing the visibility of color images includes: a luminance value cumulative distribution calculator that calculates a cumulative distribution function of the number of pixels from a minimum value of luminance values; a baseband signal determining unit that determines baseband signal pixels having luminance values smaller than a threshold level; a luminance compensation value generator that generates luminance compensation values to apply the lower-level luminance compensation values as the pixels have higher-level luminance values, for the pixels having the luminance values larger than the threshold level; a luminance gain generator that determines a luminance gain applied to the luminance compensation values according to a mean luminance values of the input images and the level of the luminance values of the pixels to which the luminance compensation values are applied; and a luminance value enhancing unit that summing the luminance compensation values including the gain with the luminance values.

摘要翻译： 用于提高彩色图像的可见度的装置包括：亮度累积分布计算器，从亮度值的最小值计算像素数的累积分布函数; 基带信号确定单元，确定具有小于阈值电平的亮度值的基带信号像素; 对于具有大于阈值水平的亮度值的像素，产生用于将作为像素的下位亮度补偿值应用于更高亮度值的亮度补偿值的亮度补偿值发生器; 亮度增益发生器，其根据输入图像的平均亮度值和施加了亮度补偿值的像素的亮度值的电平来确定施加到亮度补偿值的亮度增益; 以及亮度值增强单元，其将包括增益的亮度补偿值与亮度值相加。