公开(公告)号：US20120257673A1

公开(公告)日：2012-10-11

申请号：US13494385

申请日：2012-06-12

申请人： Min Cheol HONG

发明人： Min Cheol HONG

IPC分类号： H04N7/26

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/82

摘要： In one embodiment, the method includes obtaining a coded block pattern of first and second blocks. The coded block pattern may be one of a plurality of coded block patterns, the plurality of coded block patterns may include an intra-coded block, and the second block may be adjacent to the first block. Whether the first block and the second block have non-zero transform coefficient information is determined if the block type of the first block and the second block is not intra-coded block. A non-zero filter strength value is determined based on the obtained coded block pattern of the first and second block and the determination of whether the first block and second blocks have non-zero transform coefficient information, and the blocking phenomenon is removed according to the filter strength value.

摘要翻译： 在一个实施例中，该方法包括获得第一和第二块的编码块图案。 编码块图案可以是多个编码块图案中的一个，多个编码块图案可以包括帧内编码块，并且第二块可以与第一块相邻。 如果第一块和第二块的块类型不是帧内编码块，则确定第一块和第二块是否具有非零变换系数信息。 基于获得的第一和第二块的编码块图案确定非零滤波器强度值，以及确定第一块和第二块是否具有非零变换系数信息，并且根据 过滤强度值。

公开(公告)号：US08243829B2

公开(公告)日：2012-08-14

申请号：US11905560

申请日：2007-10-02

申请人： Min Cheol Hong

发明人： Min Cheol Hong

IPC分类号： H04N7/12

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/82

摘要： In one embodiment, the method includes obtaining a pixel value difference between two successive pixels. The two successive pixels are on a block boundary. The method further includes calculating the filtering coefficient based on the pixel value difference, and obtaining four successive filtered pixel values based on the filtering coefficient. The four successive pixels include the two successive pixels used in the obtaining a pixel value difference, and two of the four successive pixels are included in a first block and two of the four successive pixels are included in a second block.

摘要翻译： 在一个实施例中，该方法包括获得两个连续像素之间的像素值差。 两个连续的像素在块边界上。 该方法还包括基于像素值差来计算滤波系数，并且基于滤波系数获得四个连续的滤波像素值。 四个连续像素包括在获得像素值差中使用的两个连续像素，并且四个连续像素中的两个被包括在第一块中，并且四个连续像素中的两个被包括在第二块中。

公开(公告)号：US08243828B2

公开(公告)日：2012-08-14

申请号：US11905548

申请日：2007-10-02

申请人： Min Cheol Hong

发明人： Min Cheol Hong

IPC分类号： H04N7/12

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/82

摘要： In one embodiment, the method includes obtaining quantization information of a first block including the pixel to be filtered, and obtaining a block type of the first block and a second block. The second block is adjacent to the first block. The quantization information is compared to a threshold value, and loop-filtering is performed on the pixel to be filtered by using at least three successive pixels if the quantization information is greater than the threshold value and the type of the first and second block is an intra-coded block type. The at least three successive pixels include the pixel to be filtered.

摘要翻译： 在一个实施例中，该方法包括获得包括要滤波的像素的第一块的量化信息，以及获得第一块和第二块的块类型。 第二块与第一块相邻。 将量化信息与阈值进行比较，并且如果量化信息大于阈值，则通过使用至少三个连续像素对要滤波的像素执行环路滤波，并且第一和第二块的类型是 帧内编码块类型。 至少三个连续的像素包括要滤波的像素。

公开(公告)号：US08243819B2

公开(公告)日：2012-08-14

申请号：US11905558

申请日：2007-10-02

申请人： Min Cheol Hong

发明人： Min Cheol Hong

IPC分类号： H04N7/12 ,  H04N11/02

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/82

摘要： In one embodiment, the method includes obtaining a block type of the second block and the third block. The second block is adjacent to the first block horizontally, and the third block is adjacent to the first block vertically. The method further includes determining whether the second and third blocks have non-zero transform coefficient information if the block type of the second and third blocks, respectively, are not an intra-coded block. A horizontal filter strength value and vertical filter strength values are determined based on the above steps. The blocking phenomenon in the first block is removed according to the horizontal filter strength value firstly, then vertical filter strength value secondly.

摘要翻译： 在一个实施例中，该方法包括获得第二块和第三块的块类型。 第二块水平相邻于第一块，第三块与第一块垂直相邻。 该方法还包括：如果第二块和第三块的块类型分别不是帧内编码块，则确定第二块和第三块是否具有非零变换系数信息。 基于上述步骤确定水平过滤器强度值和垂直过滤器强度值。 首先根据水平滤波强度值去除第一块中的阻塞现象，然后再次求出垂直滤波强度值。

公开(公告)号：US08243818B2

公开(公告)日：2012-08-14

申请号：US11905545

申请日：2007-10-02

申请人： Min Cheol Hong

发明人： Min Cheol Hong

IPC分类号： H04N7/12

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/82

摘要： In one embodiment, loop-filtering is performed on four successive pixels if obtained quantization information for a first block is greater than the threshold value and the type of the first block and a second block is intra-coded block type. Two pixels of the four successive pixels are in the first block and two pixels of the four successive pixels are in the second block, which is adjacent the first block. The method still further includes performing additional filtering on two successive pixels on the block boundary based on a comparison result of the quantization information and a second threshold value.

摘要翻译： 在一个实施例中，如果获得的第一块的量化信息大于阈值并且第一块的类型和第二块是帧内编码块类型，则对四个连续的像素执行环路滤波。 四个连续像素中的两个像素在第一块中，并且四个连续像素中的两个像素位于与第一块相邻的第二块中。 该方法还包括基于量化信息和第二阈值的比较结果对块边界上的两个连续像素执行附加滤波。

公开(公告)号：US08243799B2

公开(公告)日：2012-08-14

申请号：US11905550

申请日：2007-10-02

申请人： Min Cheol Hong

发明人： Min Cheol Hong

IPC分类号： H04N7/12 ,  H04N11/02

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/82

摘要： In one embodiment, the method includes obtaining at least three horizontally successive reference pixel values including a pixel to be filtered, and applying first weight factors to at least each of the three horizontally successive reference pixel values. The first weight factors are different according to pixel position. A first filtered value is obtained by summing at least the three weighted horizontally successive pixel values. The method further includes obtaining at least three vertically successive reference pixel values including a pixel to be filtered, and applying second weight factors to at least each of the three vertically successive reference pixel values. The second weight factors are different according to pixel position. A second filtered value is obtained by summing at least the three weighted vertically successive pixel values.

摘要翻译： 在一个实施例中，该方法包括获得包括要滤波的像素的至少三个水平连续的参考像素值，以及将第一加权因子应用于三个水平连续的参考像素值中的至少每一个。 第一个加权因子根据像素位置而不同。 至少通过对三个加权的水平连续的像素值相加来获得第一滤波值。 该方法还包括获得包括要滤波的像素的至少三个垂直连续的参考像素值，以及将第二加权因子应用于三个垂直连续参考像素值中的至少每一个。 第二个加权因子根据像素位置而不同。 至少通过对三个加权的垂直连续的像素值相加来获得第二滤波值。

公开(公告)号：US08243795B2

公开(公告)日：2012-08-14

申请号：US11905657

申请日：2007-10-03

申请人： Min Cheol Hong

发明人： Min Cheol Hong

IPC分类号： H04N7/12

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/82

摘要： In one embodiment, the apparatus includes a decoder. The decoder is configured to obtain at least three horizontally successive reference pixel values including a pixel to be filtered, and apply first weight factors to at least each of the three horizontally successive reference pixel values. The first weight factors are different according to pixel position. A first filtered value is obtained by the decoder by summing at least the three weighted horizontally successive pixel values. The decoder is also configured to obtain at least three vertically successive reference pixel values including a pixel to be filtered, and apply second weight factors to at least each of the three vertically successive reference pixel values. The second weight factors are different according to pixel position. A second filtered value is obtained by the decoder by summing at least the three weighted vertically successive pixel values.

摘要翻译： 在一个实施例中，该装置包括解码器。 解码器被配置为获得包括要滤波的像素的至少三个水平连续的参考像素值，并且将第一加权因子应用于三个水平连续的参考像素值中的至少每一个。 第一个加权因子根据像素位置而不同。 解码器通过对至少三个加权的水平连续的像素值相加来获得第一滤波值。 解码器还被配置为获得包括要滤波的像素的至少三个垂直连续的参考像素值，并且将第二加权因子应用于三个垂直连续的参考像素值中的至少每一个。 第二个加权因子根据像素位置而不同。 解码器通过对至少三个加权的垂直连续的像素值相加来获得第二滤波值。

公开(公告)号：US08243794B2

公开(公告)日：2012-08-14

申请号：US11905656

申请日：2007-10-03

申请人： Min Cheol Hong

发明人： Min Cheol Hong

IPC分类号： H04B1/66 ,  H04N7/12

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/61 ,  H04N19/82

摘要： In one embodiment, loop-filtering is performed by a decoder on four successive pixels if obtained quantization information for a first block is greater than the threshold value and the type of the first block and a second block is intra-coded block type. Two pixels of the four successive pixels are in the first block and two pixels of the four successive pixels are in the second block, which is adjacent the first block. The decoder is also configured to perform additional filtering on two successive pixels on the block boundary based on a comparison result of the quantization information and a second threshold value.

摘要翻译： 在一个实施例中，如果获得的第一块的量化信息大于阈值并且第一块的类型和第二块是帧内编码块类型，则在四个连续的像素上由解码器执行环路滤波。 四个连续像素中的两个像素在第一块中，并且四个连续像素中的两个像素位于与第一块相邻的第二块中。 解码器还被配置为基于量化信息和第二阈值的比较结果对块边界上的两个连续像素执行附加滤波。

公开(公告)号：US07961789B2

公开(公告)日：2011-06-14

申请号：US10552938

申请日：2004-04-08

申请人： Inseong Hwang ,  Chulwoo Kim ,  Min-Cheol Hong ,  Kyoung-Seok In

发明人： Inseong Hwang ,  Chulwoo Kim ,  Min-Cheol Hong ,  Kyoung-Seok In

IPC分类号： H04N11/02

CPC分类号： H04N19/57 ,  H04N19/105 ,  H04N19/162 ,  H04N19/176 ,  H04N19/61

摘要： The video encoder in accordance with the present invention divides input image signal into macro blocks, estimates motion vectors of each macro block and finally encodes the input image signal. The encoder determines the number of macro blocks adjacent to a current macro block. If the number of adjacent macro blocks is equal to or more than two, the encoder calculates a motion vector of the adjacent macro blocks and selects a macro block that has the largest motion vector. Then it defines a least search area that the current adaptive motion vector can have, and compares the least search area with the motion vector of the largest adjacent macro block, and finally determines the largest value as the search area of the adaptive motion vector. Next, the encoder compares the search area of the adaptive motion vector with the search area of the user-defined motion adaptive vector to thereby determine the least value as the search area of the final adaptive motion vector.

摘要翻译： 根据本发明的视频编码器将输入图像信号分成宏块，估计每个宏块的运动矢量，并最终对输入的图像信号进行编码。 编码器确定与当前宏块相邻的宏块的数量。 如果相邻宏块的数量等于或大于2，则编码器计算相邻宏块的运动矢量，并选择具有最大运动矢量的宏块。 然后定义当前自适应运动矢量可以具有的最小搜索区域，并将最小搜索区域与最大相邻宏块的运动矢量进行比较，最后确定最大值作为自适应运动矢量的搜索区域。 接下来，编码器将自适应运动矢量的搜索区域与用户定义的运动自适应矢量的搜索区域进行比较，从而确定最小值作为最终自适应运动矢量的搜索区域。

公开(公告)号：USRE41907E1

公开(公告)日：2010-11-02

申请号：US11892179

申请日：2007-08-20

申请人： Min-Cheol Hong

发明人： Min-Cheol Hong

IPC分类号： H04N1/04

CPC分类号： H04N19/192 ,  H04N19/86

摘要： The present invention relates to an image processing technique, and in particular to a method for restoring a compressed image by using a hybrid motion compensation discrete cosine transform (hybrid MC/DCT) mechanism, including: a step of defining a smoothing functional having a smoothing degree of an image and reliability for an original image by pixels having an identical property in image block units; and a step of computing a restored image by performing a gradient operation on the smoothing functional in regard to the original image, thereby preventing the blocking artifacts and the ringing effects in regard to the pixels having an identical property in image blocks. In one embodiment, the method includes obtaining a pixel value in a current block and at least one adjacent pixel value according to a smoothing direction, and obtaining a smoothing value of the current image based on the obtained pixel value in the current block and the adjacent pixel value according to the smoothing direction. A pixel value around a boundary of the current block is smoothed based on the smoothing value.

摘要翻译： 本发明涉及一种图像处理技术，特别涉及一种通过使用混合运动补偿离散余弦变换（混合MC / DCT）机制来恢复压缩图像的方法，包括：定义具有平滑功能的平滑功能的步骤 通过像素具有图像块单位的相同属性的原始图像的图像的程度和可靠性; 以及通过对关于原始图像的平滑功能执行梯度操作来计算恢复的图像的步骤，由此防止对于具有在图像块中具有相同属性的像素的块伪影和振铃效果。 在一个实施例中，该方法包括根据平滑方向获得当前块中的像素值和至少一个相邻像素值，并且基于当前块和邻近块中获得的像素值获得当前图像的平滑值 像素值根据平滑方向。 基于平滑值平滑当前块的边界周围的像素值。