公开(公告)号：US20070133895A1

公开(公告)日：2007-06-14

申请号：US11526479

申请日：2006-09-25

申请人： Moon-Gi Kang ,  Gun-Shik Shin ,  Chang-Won Kim ,  Min-Kyu Park

发明人： Moon-Gi Kang ,  Gun-Shik Shin ,  Chang-Won Kim ,  Min-Kyu Park

IPC分类号： G06K9/40

CPC分类号： G06T5/002 ,  G06T5/20

摘要： Disclosed is a method for removing image noise using pattern information, which filters noise caught by a sensor during preprocessing of a compression codec, so as to increase a compression efficiency, and noise caused by the codec during post-processing of the codec, so as to obtain high quality images. The method includes the steps of: (a) carrying out region dispersion with respect to input image signals so that the image signals are dispersed with a predetermined pixel size; (b) calculating mean brightness of the input image signals and carrying out noise dispersion with respect to the input image signals; (c) switching a low frequency and a high frequency based on image signals which are subjected to the region dispersion and the noise dispersion; (d) removing noise based on a statistic after obtaining the region average with respect to the image signals having the low frequency; and (e) removing noise based on a similarity of pixels after analyzing patterns with relation to the image signals having the high frequency.

摘要翻译： 公开了一种使用图案信息去除图像噪声的方法，该图案信息在压缩编解码器的预处理期间过滤由传感器捕获的噪声，以便提高压缩效率，以及在编解码器的后处理期间由编解码器引起的噪声，从而 以获得高质量的图像。 该方法包括以下步骤：（a）相对于输入图像信号执行区域色散，使得图像信号以预定像素尺寸分散; （b）计算输入图像信号的平均亮度并对输入图像信号执行噪声色散; （c）基于经受区域色散和噪声色散的图像信号切换低频和高频; （d）在获得相对于具有低频率的图像信号的区域平均值之后，基于统计消除噪声; 以及（e）根据与具有高频率的图像信号分析图案之后的像素的相似度去除噪声。

公开(公告)号：US08953896B2

公开(公告)日：2015-02-10

申请号：US13181824

申请日：2011-07-13

申请人： Hyun-seung Lee ,  Dong-hyun Kim ,  Se-hyeok Park ,  Jong-hyun Park ,  Gun-shik Shin ,  Youn-jin Kim

发明人： Hyun-seung Lee ,  Dong-hyun Kim ,  Se-hyeok Park ,  Jong-hyun Park ,  Gun-shik Shin ,  Youn-jin Kim

IPC分类号： G06K9/00 ,  H04N19/33

CPC分类号： H04N19/00436 ,  H04N19/33

摘要： A method and apparatus for enhancing and improving image quality are provided. The method includes separating an input image into at least one low frequency component and at least one high frequency component; modulating the low frequency components in a block unit by dithering; modulating the high frequency components by sampling; and combining the modulated low frequency components and the modulated high frequency components.

摘要翻译： 提供了一种提高和提高图像质量的方法和装置。 该方法包括将输入图像分离成至少一个低频分量和至少一个高频分量; 通过抖动调制块单元中的低频分量; 通过采样调制高频分量; 以及组合调制的低频分量和调制的高频分量。

公开(公告)号：US08682110B2

公开(公告)日：2014-03-25

申请号：US13491114

申请日：2012-06-07

申请人： Gun-shik Shin ,  Se-hyeok Park ,  Jong-hyun Park ,  Chang-su Han

发明人： Gun-shik Shin ,  Se-hyeok Park ,  Jong-hyun Park ,  Chang-su Han

IPC分类号： G06K9/32

CPC分类号： H04N7/0117 ,  H04N7/0125 ,  H04N7/014

摘要： A method and apparatus for converting a resolution of a block-based image. The method includes: dividing a low resolution image frame into a plurality of blocks, each block having a predetermined size; performing motion prediction in a sub-pixel unit of each of the divided blocks and determining a motion vector in the sub-pixel unit; dividing the motion vector of the sub-pixel unit into a first motion vector having an integer pixel unit and a second motion vector having the sub-pixel unit; determining at least one low resolution reference block corresponding to each of the divided blocks by using the first motion vector having the integer pixel unit; converting each of the divided blocks into high resolution block by using the second motion vector having the sub-pixel unit and the one low resolution reference block; and generating a high resolution image frame by using each of the converted high resolution blocks.

摘要翻译： 一种用于转换基于块的图像的分辨率的方法和装置。 该方法包括：将低分辨率图像帧划分成多个块，每个块具有预定尺寸; 在每个分割块的子像素单元中执行运动预测，并确定子像素单元中的运动矢量; 将子像素单元的运动矢量划分为具有整数像素单位的第一运动矢量和具有子像素单位的第二运动矢量; 通过使用具有整数像素单位的第一运动矢量来确定与每个分割块相对应的至少一个低分辨率参考块; 通过使用具有子像素单元和一个低分辨率参考块的第二运动矢量将每个分割块转换成高分辨率块; 以及通过使用每个转换的高分辨率块来生成高分辨率图像帧。

公开(公告)号：US20120314975A1

公开(公告)日：2012-12-13

申请号：US13491114

申请日：2012-06-07

申请人： Gun-shik SHIN ,  Se-hyeok PARK ,  Jong-hyun PARK ,  Chang-su HAN

发明人： Gun-shik SHIN ,  Se-hyeok PARK ,  Jong-hyun PARK ,  Chang-su HAN

IPC分类号： G06K9/36

CPC分类号： H04N7/0117 ,  H04N7/0125 ,  H04N7/014

摘要： A method and apparatus for converting a resolution of a block-based image. The method includes: dividing a low resolution image frame into a plurality of blocks, each block having a predetermined size; performing motion prediction in a sub-pixel unit of each of the divided blocks and determining a motion vector in the sub-pixel unit; dividing the motion vector of the sub-pixel unit into a first motion vector having an integer pixel unit and a second motion vector having the sub-pixel unit; determining at least one low resolution reference block corresponding to each of the divided blocks by using the first motion vector having the integer pixel unit; converting each of the divided blocks into high resolution block by using the second motion vector having the sub-pixel unit and the one low resolution reference block; and generating a high resolution image frame by using each of the converted high resolution blocks.

摘要翻译： 一种用于转换基于块的图像的分辨率的方法和装置。 该方法包括：将低分辨率图像帧划分成多个块，每个块具有预定尺寸; 在每个分割块的子像素单元中执行运动预测，并确定子像素单元中的运动矢量; 将子像素单元的运动矢量划分为具有整数像素单位的第一运动矢量和具有子像素单位的第二运动矢量; 通过使用具有整数像素单位的第一运动矢量来确定与每个分割块相对应的至少一个低分辨率参考块; 通过使用具有子像素单元和一个低分辨率参考块的第二运动矢量将每个分割块转换成高分辨率块; 以及通过使用每个转换的高分辨率块来生成高分辨率图像帧。

公开(公告)号：US20120014616A1

公开(公告)日：2012-01-19

申请号：US13181824

申请日：2011-07-13

申请人： Hyun-seung LEE ,  Dong-hyun KIM ,  Se-hyeok PARK ,  Jong-hyun PARK ,  Gun-shik SHIN ,  Youn-jin KIM

发明人： Hyun-seung LEE ,  Dong-hyun KIM ,  Se-hyeok PARK ,  Jong-hyun PARK ,  Gun-shik SHIN ,  Youn-jin KIM

IPC分类号： G06K9/40

CPC分类号： H04N19/00436 ,  H04N19/33

摘要： A method and apparatus for enhancing and improving image quality are provided. The method includes separating an input image into at least one low frequency component and at least one high frequency component; modulating the low frequency components in a block unit by dithering; modulating the high frequency components by sampling; and combining the modulated low frequency components and the modulated high frequency components.

摘要翻译： 提供了一种提高和提高图像质量的方法和装置。 该方法包括将输入图像分离成至少一个低频分量和至少一个高频分量; 通过抖动调制块单元中的低频分量; 通过采样调制高频分量; 以及组合调制的低频分量和调制的高频分量。

公开(公告)号：US20110142368A1

公开(公告)日：2011-06-16

申请号：US12913909

申请日：2010-10-28

申请人： Gun-shik SHIN ,  Dong-hyun KIM ,  Jae-hun LEE ,  Sang-yun KIM

发明人： Gun-shik SHIN ,  Dong-hyun KIM ,  Jae-hun LEE ,  Sang-yun KIM

IPC分类号： G06K9/40

CPC分类号： G06T5/002 ,  G06T2207/20021

摘要： A block-based image denoising method includes determining similarities between a current block and reference blocks within a search range around the current block, from among certain-sized blocks divided from an input image; determining weights of the reference blocks with respect to the current block based on the similarities; and generating resultant blocks by denoising the current block with respect to every block of the input image based on the weights of the reference blocks.

摘要翻译： 基于块的图像去噪方法包括：从当前块与当前块周围的搜索范围内的参考块之间确定与从输入图像分开的特定大小的块中的相似度; 基于相似度确定参考块相对于当前块的权重; 并且基于所述参考块的权重，通过对所述输入图像的每个块去除当前块来生成合成块。

公开(公告)号：US07734115B2

公开(公告)日：2010-06-08

申请号：US11526479

申请日：2006-09-25

申请人： Moon-Gi Kang ,  Gun-Shik Shin ,  Chang-Won Kim ,  Min-Kyu Park

发明人： Moon-Gi Kang ,  Gun-Shik Shin ,  Chang-Won Kim ,  Min-Kyu Park

IPC分类号： G06K9/40

CPC分类号： G06T5/002 ,  G06T5/20

摘要： Disclosed is a method for removing image noise using pattern information, which filters noise caught by a sensor during preprocessing of a compression codec, so as to increase a compression efficiency, and noise caused by the codec during post-processing of the codec, so as to obtain high quality images. The method includes the steps of: (a) carrying out region dispersion with respect to input image signals so that the image signals are dispersed with a predetermined pixel size; (b) calculating mean brightness of the input image signals and carrying out noise dispersion with respect to the input image signals; (c) switching a low frequency and a high frequency based on image signals which are subjected to the region dispersion and the noise dispersion; (d) removing noise based on a statistic after obtaining the region average with respect to the image signals having the low frequency; and (e) removing noise based on a similarity of pixels after analyzing patterns with relation to the image signals having the high frequency.

摘要翻译： 公开了一种使用图案信息去除图像噪声的方法，该图案信息在压缩编解码器的预处理期间过滤由传感器捕获的噪声，以便提高压缩效率，以及在编解码器的后处理期间由编解码器引起的噪声，从而 以获得高质量的图像。 该方法包括以下步骤：（a）相对于输入图像信号执行区域色散，使得图像信号以预定像素尺寸分散; （b）计算输入图像信号的平均亮度并对输入图像信号执行噪声色散; （c）基于经受区域色散和噪声色散的图像信号切换低频和高频; （d）在获得相对于具有低频率的图像信号的区域平均值之后，基于统计消除噪声; 以及（e）根据与具有高频率的图像信号分析图案之后的像素的相似度去除噪声。

公开(公告)号：US08818126B2

公开(公告)日：2014-08-26

申请号：US12913909

申请日：2010-10-28

申请人： Gun-shik Shin ,  Dong-hyun Kim ,  Jae-hun Lee ,  Sang-yun Kim

发明人： Gun-shik Shin ,  Dong-hyun Kim ,  Jae-hun Lee ,  Sang-yun Kim

IPC分类号： G06K9/40 ,  G06K9/36

CPC分类号： G06T5/002 ,  G06T2207/20021

摘要： A block-based image denoising method includes determining similarities between a current block and reference blocks within a search range around the current block, from among certain-sized blocks divided from an input image; determining weights of the reference blocks with respect to the current block based on the similarities; and generating resultant blocks by denoising the current block with respect to every block of the input image based on the weights of the reference blocks.

摘要翻译： 基于块的图像去噪方法包括：从当前块与当前块周围的搜索范围内的参考块之间确定与从输入图像分开的特定大小的块中的相似度; 基于相似度确定参考块相对于当前块的权重; 以及基于所述参考块的权重，通过对所述输入图像的每个块去除当前块来生成合成块。

公开(公告)号：US08644636B2

公开(公告)日：2014-02-04

申请号：US13343950

申请日：2012-01-05

申请人： Gun-shik Shin ,  Jong-beom Ra ,  Se-hyeok Park ,  Seok-bong Yoo ,  Jae-hyun Kim ,  Kyu-ha Choi

发明人： Gun-shik Shin ,  Jong-beom Ra ,  Se-hyeok Park ,  Seok-bong Yoo ,  Jae-hyun Kim ,  Kyu-ha Choi

IPC分类号： G06K9/40

CPC分类号： H04N19/86 ,  H04N19/48

摘要： A method and apparatus for removing an image blocking artifact by using a transformation coefficient are provided. The method includes: detecting a first blocking artifact which is in a flat region of the input image; removing the first blocking artifact using a number of low frequency coefficients from among transformation coefficients for each transformation block of a plurality of transformation blocks of the input image, based on a result of detecting the first blocking artifact; detecting an edge region of the input image; and removing a second blocking artifact, which is in an edge region of an intermediate image obtained from the removing of the first blocking artifact of the input image, based on the detected edge region in the input image.

摘要翻译： 提供了一种通过使用变换系数去除图像块伪影的方法和装置。 该方法包括：检测处于输入图像的平坦区域中的第一块伪影; 基于检测到第一块伪像的结果，从输入图像的多个变换块的每个变换块的变换系数中使用多个低频系数去除第一块伪像; 检测所述输入图像的边缘区域; 以及基于所检测的输入图像中的边缘区域，去除位于从去除输入图像的第一块伪像获得的中间图像的边缘区域中的第二块伪影。

公开(公告)号：US20120177301A1

公开(公告)日：2012-07-12

申请号：US13343950

申请日：2012-01-05

申请人： Gun-shik SHIN ,  Jong-beom RA ,  Se-hyeok PARK ,  Seok-bong YOO ,  Jae-hyun KIM ,  Kyu-ha CHOI

发明人： Gun-shik SHIN ,  Jong-beom RA ,  Se-hyeok PARK ,  Seok-bong YOO ,  Jae-hyun KIM ,  Kyu-ha CHOI

IPC分类号： G06K9/40

CPC分类号： H04N19/86 ,  H04N19/48

摘要： A method and apparatus for removing an image blocking artifact by using a transformation coefficient are provided. The method includes: detecting a first blocking artifact which is in a flat region of the input image; removing the first blocking artifact using a number of low frequency coefficients from among transformation coefficients for each transformation block of a plurality of transformation blocks of the input image, based on a result of detecting the first blocking artifact; detecting an edge region of the input image; and removing a second blocking artifact, which is in an edge region of an intermediate image obtained from the removing of the first blocking artifact of the input image, based on the detected edge region in the input image.

摘要翻译： 提供了一种通过使用变换系数去除图像块伪影的方法和装置。 该方法包括：检测处于输入图像的平坦区域中的第一块伪影; 基于检测到第一块伪像的结果，从输入图像的多个变换块的每个变换块的变换系数中使用多个低频系数去除第一块伪像; 检测所述输入图像的边缘区域; 以及基于所检测的输入图像中的边缘区域，去除位于从去除输入图像的第一块伪像获得的中间图像的边缘区域中的第二块伪影。