公开(公告)号：US08693777B2

公开(公告)日：2014-04-08

申请号：US13091227

申请日：2011-04-21

申请人： Joo Young Ha ,  Won Tae Choi ,  Byung Hyun Kim ,  Bong Soon Kang ,  Won Woo Jang ,  Kyung Rin Kim ,  Jung Joo Yang ,  Gi Dong Lee ,  Kang Joo Kim

发明人： Joo Young Ha ,  Won Tae Choi ,  Byung Hyun Kim ,  Bong Soon Kang ,  Won Woo Jang ,  Kyung Rin Kim ,  Jung Joo Yang ,  Gi Dong Lee ,  Kang Joo Kim

IPC分类号： G06K9/00

CPC分类号： H04N1/4092 ,  G06T7/13 ,  G06T7/143

摘要： There are provided an apparatus and a method for estimating edge areas of pixels in a digital image to thereby prevent an edge sharpening algorithm from being applied to non-edge area of the digital image. Therefore, the apparatus can accurately determine whether each pixel is in an edge area or in a non-edge area, by generating a binary mask obtained by using a luminance difference average between each pixel and each of neighboring pixels in the digital image. Moreover, the determination of an edge-area or a non-edge area may be applied to various digital images, by adjusting a level of edge-area determination.

摘要翻译： 提供了一种用于估计数字图像中的像素的边缘区域的装置和方法，从而防止边缘锐化算法被应用于数字图像的非边缘区域。 因此，通过生成通过使用数字图像中的每个像素和每个相邻像素之间的亮度差平均而获得的二进制掩码，该装置可以准确地确定每个像素是在边缘区域还是在非边缘区域。 此外，可以通过调整边缘区域确定的水平来将边缘区域或非边缘区域的确定应用于各种数字图像。

公开(公告)号：US20120033884A1

公开(公告)日：2012-02-09

申请号：US13091227

申请日：2011-04-21

申请人： Joo Young Ha ,  Won Tae Choi ,  Byung Hyun Kim ,  Bong Soon Kang ,  Won Woo Jang ,  Kyung Rin Kim ,  Jung Joo Yang ,  Gi Dong Lee ,  Kang Joo Kim

发明人： Joo Young Ha ,  Won Tae Choi ,  Byung Hyun Kim ,  Bong Soon Kang ,  Won Woo Jang ,  Kyung Rin Kim ,  Jung Joo Yang ,  Gi Dong Lee ,  Kang Joo Kim

IPC分类号： G06K9/00

CPC分类号： H04N1/4092 ,  G06T7/13 ,  G06T7/143

摘要： There are provided an apparatus and a method for estimating edge areas of pixels in a digital image to thereby prevent an edge sharpening algorithm from being applied to non-edge area of the digital image. Therefore, the apparatus can accurately determine whether each pixel is in an edge area or in a non-edge area, by generating a binary mask obtained by using a luminance difference average between each pixel and each of neighboring pixels in the digital image. Moreover, the determination of an edge-area or a non-edge area may be applied to various digital images, by adjusting a level of edge-area determination.

摘要翻译： 提供了一种用于估计数字图像中的像素的边缘区域的装置和方法，从而防止边缘锐化算法被应用于数字图像的非边缘区域。 因此，通过生成通过使用数字图像中的每个像素和每个相邻像素之间的亮度差平均而获得的二进制掩码，该装置可以准确地确定每个像素是在边缘区域还是在非边缘区域。 此外，可以通过调整边缘区域确定的水平来将边缘区域或非边缘区域的确定应用于各种数字图像。

公开(公告)号：US08606034B2

公开(公告)日：2013-12-10

申请号：US13092438

申请日：2011-04-22

申请人： Joo Young Ha ,  Won Tae Choi ,  Bong Soon Kang ,  Byung Hyun Kim ,  Joo Hyun Kim ,  Sun Mi Sin ,  Won Woo Jang ,  Hak Yong Han ,  Gi Dong Lee

发明人： Joo Young Ha ,  Won Tae Choi ,  Bong Soon Kang ,  Byung Hyun Kim ,  Joo Hyun Kim ,  Sun Mi Sin ,  Won Woo Jang ,  Hak Yong Han ,  Gi Dong Lee

IPC分类号： G06K9/40

CPC分类号： G06T5/003 ,  G06T7/13 ,  G06T2207/20192

摘要： There is provided an apparatus for improving the sharpness of an image, which may prevent occurrence of distortion of an image in an edge enhancement process of the image by applying an active weight in accordance with a two-dimensional (2D) high pass filtering value of the image. The apparatus may include: a 2D high pass filter outputting a high frequency element value for the luminance values of pixels of an input image; a weight generating unit generating a weight changed depending on a magnitude of the high frequency element value; a weight applying unit applying the weight to the high frequency element value; and an edge enhancement image generating unit adding, to the luminance values of the pixels of the input image, the high frequency element value to which the weight is applied to thereby output an image of which an edge is enhanced.

摘要翻译： 提供了一种用于提高图像的清晰度的装置，其可以通过根据二维（2D）高通滤波值施加有效权重来防止图像的边缘增强处理中的图像失真的发生 图片。 所述装置可以包括：输出用于输入图像的像素的亮度值的高频元素值的2D高通滤波器; 权重生成单元，生成根据高频元素值的大小而变化的权重; 加权单元，将所述权重应用于所述高频元素值; 以及边缘增强图像生成单元，对输入图像的像素的亮度值加上加权的高频单元值，从而输出边缘增强的图像。

公开(公告)号：US20100150440A1

公开(公告)日：2010-06-17

申请号：US12476516

申请日：2009-06-02

申请人： Boo Dong KWAK ,  Bong Soon Kang ,  Hyun Soo Kim ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

发明人： Boo Dong KWAK ,  Bong Soon Kang ,  Hyun Soo Kim ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

IPC分类号： G06K9/40

CPC分类号： G06T3/4015 ,  G06T3/403 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20192 ,  H04N9/045 ,  H04N2209/046

摘要： A color interpolation apparatus includes: a threshold value determining unit that calculates a luminance value of each of a plurality of areas set based on each pixel of a bayer pattern image generated by an image sensor, and determines edge determining threshold values used for determining each edge of the set areas; an edge information calculating unit that calculates pixel value variations in multiple directions of horizontal, vertical, diagonal, and central directions of the corresponding set areas by using pixel values of pixels included in each set area, and calculates edge information regarding each set area by using the calculated multi-directional pixel value variations; an area determining unit that determines a type of an edge present in each set area by using the edge determining threshold values deterred by the threshold value determining unit and the edge information calculated by the edge information calculating unit; and a color interpolation unit that applies a color interpolation filter previously set according to the edge types to a corresponding set area according to the edge types determined for each region set by the area determining unit.

摘要翻译： 颜色插值装置包括：阈值确定单元，其基于由图像传感器生成的拜耳图案图像的每个像素计算多个区域中的每个区域的亮度值，并且确定用于确定每个边缘的边缘确定阈值 的区域; 边缘信息计算单元，通过使用包括在每个设置区域中的像素的像素值来计算相应设置区域的水平，垂直，对角线和中心方向的多个方向的像素值变化，并且通过使用 计算出的多方向像素值变化; 区域确定单元，其通过使用由阈值确定单元阻止的边缘确定阈值和由边缘信息计算单元计算的边缘信息来确定存在于每个设置区域中的边缘的类型; 以及颜色插值单元，其根据由区域确定单元设置的每个区域确定的边缘类型，将根据边缘类型预先设置的颜色插值滤波器应用于相应的设置区域。

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：US09092881B2

公开(公告)日：2015-07-28

申请号：US12476516

申请日：2009-06-02

申请人： Boo Dong Kwak ,  Bong Soon Kang ,  Hyun Soo Kim ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

发明人： Boo Dong Kwak ,  Bong Soon Kang ,  Hyun Soo Kim ,  Won Woo Jang ,  Kyung Rin Kim ,  Won Tae Choi ,  Joo Young Ha

IPC分类号： G06T3/40 ,  G06T7/00 ,  H04N9/04

CPC分类号： G06T3/4015 ,  G06T3/403 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20192 ,  H04N9/045 ,  H04N2209/046

摘要： A color interpolation apparatus includes a threshold value determining unit that calculates a luminance value of each area set based on each pixel of a Bayer pattern image and determines edge determining threshold values, an edge information calculating unit that calculates pixel value variations in multiple directions of the set areas by using pixel values of pixels included in each area and edge information regarding each area by using the multiple directional pixel value variations, an area determining unit that determines an edge type by using the edge determining threshold values and the edge information, and a color interpolation unit that applies a color interpolation filter previously set according to the edge type to a corresponding area according to the edge type. The area determining unit uses green information or interpolated green information of a central pixel depending on whether or not a color of the central pixel is green.

摘要翻译： 颜色插值装置包括阈值确定单元，该阈值确定单元基于拜耳图案图像的每个像素计算每个区域的亮度值并确定边缘确定阈值;边缘信息计算单元，其计算多个方向的像素值变化 通过使用包括在每个区域中的像素的像素值和通过使用多方向像素值变化的关于每个区域的边缘信息来设置区域;区域确定单元，通过使用边缘确定阈值和边缘信息来确定边缘类型，以及 颜色插值单元，其根据边缘类型将根据边缘类型预先设置的颜色插值滤波器应用于相应区域。 区域确定单元使用绿色信息或中心像素的内插绿色信息，这取决于中心像素的颜色是否为绿色。

公开(公告)号：US20100097492A1

公开(公告)日：2010-04-22

申请号：US12467504

申请日：2009-05-18

申请人： Joo Young Ha ,  Bong Soon Kang ,  Kyung Rin Kim ,  Won Tae Choi ,  Byung Hoon Kim

发明人： Joo Young Ha ,  Bong Soon Kang ,  Kyung Rin Kim ,  Won Tae Choi ,  Byung Hoon Kim

IPC分类号： H04N5/235

CPC分类号： H04N5/2353

摘要： There is provided an apparatus and method for controlling auto exposure (AE) that is used in digital imaging devices. The apparatus which controls the luminance of an image being outputted from an image sensor by controlling exposure time and analog gain of the image sensor includes: a luminance operation unit operating and outputting a mean luminance of the image outputted from the image sensor; a shutter index determination unit comparing a predetermined target luminance with the mean luminance of the outputted image and determining a shutter index in different manners according to the magnitude of the difference between the target luminance and the mean luminance of the outputted image; and an exposure time/analog gain determination unit generating exposure time and analog gain corresponding to the shutter index determined in the shutter index determination unit and applying the generated exposure time and analog gain to the image sensor. Therefore, the apparatus may be useful to stably reproduce an image with an adequate luminance even when there is a rapid change in brightness of a subject for photography.

摘要翻译： 提供了一种用于控制在数字成像装置中使用的自动曝光（AE）的装置和方法。 通过控制图像传感器的曝光时间和模拟增益来控制从图像传感器输出的图像的亮度的装置，包括：亮度操作单元，操作并输出从图像传感器输出的图像的平均亮度; 快门指标确定单元，将预定目标亮度与输出图像的平均亮度进行比较，并根据目标亮度和输出图像的平均亮度之间的差值的大小以不同的方式确定快门指数; 以及曝光时间/模拟增益确定单元，其生成与在快门指定确定单元中确定的快门指标相对应的曝光时间和模拟增益，并将所生成的曝光时间和模拟增益应用于图像传感器。 因此，即使在摄影对象的亮度急剧变化的情况下，该装置也可以用于以足够的亮度稳定再现图像。

公开(公告)号：US08115829B2

公开(公告)日：2012-02-14

申请号：US12467504

申请日：2009-05-18

申请人： Joo Young Ha ,  Bong Soon Kang ,  Kyung Rin Kim ,  Won Tae Choi ,  Byung Hoon Kim

发明人： Joo Young Ha ,  Bong Soon Kang ,  Kyung Rin Kim ,  Won Tae Choi ,  Byung Hoon Kim

IPC分类号： H04N5/238 ,  H04N5/243

CPC分类号： H04N5/2353

摘要： An apparatus and method for controlling auto exposure (AE) that is used in digital imaging devices. The apparatus controlling the luminance of an image being outputted from an image sensor by controlling exposure time and analog gain of the image sensor includes: a luminance operation unit operating and outputting a mean luminance of the image outputted from the image sensor; a shutter index determination unit comparing a predetermined target luminance with the mean luminance of the outputted image and determining a shutter index in different manners according to the magnitude of the difference between the target luminance and the mean luminance of the outputted image; and an exposure time/analog gain determination unit generating exposure time and analog gain corresponding to the shutter index determined in the shutter index determination unit and applying the generated exposure time and analog gain to the image sensor.

摘要翻译： 一种用于控制数字成像装置中使用的自动曝光（AE）的装置和方法。 通过控制图像传感器的曝光时间和模拟增益来控制从图像传感器输出的图像的亮度的装置包括：亮度操作单元，操作并输出从图像传感器输出的图像的平均亮度; 快门指标确定单元，将预定目标亮度与输出图像的平均亮度进行比较，并根据目标亮度和输出图像的平均亮度之间的差值的大小以不同的方式确定快门指数; 以及曝光时间/模拟增益确定单元，其生成与在快门指定确定单元中确定的快门指标相对应的曝光时间和模拟增益，并将所生成的曝光时间和模拟增益应用于图像传感器。

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 。