公开(公告)号：US20120033885A1

公开(公告)日：2012-02-09

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 ,  G06K9/00

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：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：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。