公开(公告)号：US20130022112A1

公开(公告)日：2013-01-24

申请号：US13551686

申请日：2012-07-18

申请人： Chong Soon Lim ,  Viktor Wahadaniah ,  Sue Mon Thet Naing ,  Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio

发明人： Chong Soon Lim ,  Viktor Wahadaniah ,  Sue Mon Thet Naing ,  Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio

IPC分类号： H04N7/26 ,  H04N7/32

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/184 ,  H04N19/61

摘要： A filtering method is for performing deblocking filtering on the boundary between an IPCM block and a non-IPCM block adjacent to each other in an image and including: determining a first quantization parameter for the non-IPCM block; determining a second quantization parameter for the IPCM block, using the first quantization parameter; determining a filter strength for the boundary, using the first quantization parameter and the second quantization parameter; and performing the deblocking filtering on the boundary using the determined filter strength.

摘要翻译： 一种滤波方法，用于对图像中彼此相邻的IPCM块和非IPCM块之间的边界进行解块滤波，包括：确定非IPCM块的第一量化参数; 使用所述第一量化参数确定所述IPCM块的第二量化参数; 使用所述第一量化参数和所述第二量化参数来确定所述边界的滤波器强度; 并使用所确定的滤波器强度在边界上执行去块滤波。

公开(公告)号：US08279923B2

公开(公告)日：2012-10-02

申请号：US12026729

申请日：2008-02-06

申请人： Chong Soon Lim ,  Viktor Wahadaniah ,  Teo Han Boon ,  Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kazuya Takagi

发明人： Chong Soon Lim ,  Viktor Wahadaniah ,  Teo Han Boon ,  Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kazuya Takagi

IPC分类号： H04N7/12

CPC分类号： H04N19/19 ,  H04N19/124 ,  H04N19/147 ,  H04N19/17 ,  H04N19/177

摘要： A method and an apparatus are provided for adaptively improving an image quality of current images to be coded by reducing effects due to pulsing artifacts. The video coding method is intended for coding a video on a per predetermined block basis using one or more predetermined quantization control variables. The method includes calculating a correlation degree indicating a correlation between an original block in a current original picture to be coded and a prediction block in a previous uncompressed picture, and includes changing a first predetermined quantization control variable to a second predetermined quantization control variable, so as to reduce a quantization step size when the correlation degree is greater than a predetermined threshold. The method also includes determining the quantization step size based on the second quantization control variable, and coding the original block based on the determined quantization step size using a predetermined image coding tool.

摘要翻译： 提供了一种方法和装置，用于通过减少由于脉冲伪像引起的影响来自适应地改善要编码的当前图像的图像质量。 视频编码方法旨在使用一个或多个预定量化控制变量在每个预定块的基础上编码视频。 该方法包括：计算指示当前待编码的原始图像中的原始块与先前未压缩图像中的预测块之间的相关性的相关度，并且包括将第一预定量化控制变量改变为第二预定量化控制变量，因此 以便当相关度大于预定阈值时减小量化步长。 该方法还包括基于第二量化控制变量来确定量化步长，并且使用预定的图像编码工具，基于所确定的量化步长对原始块进行编码。

公开(公告)号：US20120201297A1

公开(公告)日：2012-08-09

申请号：US13502592

申请日：2010-10-29

申请人： Chong Soon Lim ,  Min Li ,  Hai Wei Sun ,  Youji Shibahara ,  Takahiro Nishi

发明人： Chong Soon Lim ,  Min Li ,  Hai Wei Sun ,  Youji Shibahara ,  Takahiro Nishi

IPC分类号： H04N7/12

CPC分类号： H04N19/44 ,  H04N19/126 ,  H04N19/176 ,  H04N19/463 ,  H04N19/61

摘要： An image decoding method including: obtaining an old quantization scaling matrix which is a decoded quantization scaling matrix and is used for decoding a new quantization scaling matrix; obtaining, from the coded stream, an update parameter indicating an amount of change in the new quantization scaling matrix with respect to the old quantization scaling matrix; decoding the new quantization scaling matrix using the old quantization scaling matrix obtained in the obtaining of an old quantization scaling matrix and the update parameter obtained in the obtaining of an update parameter; and decoding the coded image using the new quantization scaling matrix decoded in the decoding of the new quantization scaling matrix.

摘要翻译： 一种图像解码方法，包括：获得作为解码的量化缩放矩阵的旧的量化缩放矩阵，并用于解码新的量化缩放矩阵; 从编码流中获取指示相对于旧的量化缩放矩阵的新量化缩放矩阵的变化量的更新参数; 使用在获得旧的量化缩放矩阵中获得的旧的量化缩放矩阵和在获得更新参数中获得的更新参数来解码新的量化缩放矩阵; 以及使用在新的量化缩放矩阵的解码中解码的新的量化缩放矩阵来解码编码图像。

公开(公告)号：US20110142134A1

公开(公告)日：2011-06-16

申请号：US13059804

申请日：2010-06-16

申请人： Viktor Wahadaniah ,  Chong Soon Lim ,  Han Boon Teo ,  Youji Shibahara ,  Takahiro Nishi ,  Kiyofumi Abe

发明人： Viktor Wahadaniah ,  Chong Soon Lim ,  Han Boon Teo ,  Youji Shibahara ,  Takahiro Nishi ,  Kiyofumi Abe

IPC分类号： H04N7/26 ,  G06K9/00

CPC分类号： H04N7/52 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/50 ,  H04N19/593 ,  H04N19/61

摘要： A method of coding an original image, including: partitioning (S110) the original image into blocks; determining (S120) a coding condition for a current one of the blocks; and coding (S130) the current block according to the determined coding condition, wherein the determining (S120) of the coding condition for the current block includes calculating (S210) a first spatial-activity value indicating complexity of at least a part of regions of the current block; comparing (S220) the first spatial-activity value with a first predetermined threshold value; determining (S230), as the coding condition for the current block, a first coding condition for small partitioning size, when the first spatial-activity value is smaller than the first predetermined threshold value; and determining (S240), as the coding condition for the current block, a second coding condition for large partitioning size, when the first spatial-activity value is equal to or larger than the first predetermined threshold value.

摘要翻译： 一种对原始图像进行编码的方法，包括：将原始图像划分成（S110）为块; 确定（S120）当前一个块的编码条件; 以及根据所确定的编码条件对当前块进行编码（S130），其中当前块的编码条件的确定（S120）包括计算（S210）表示至少部分区域的复杂度的第一空间活动值 当前块; 将所述第一空间活动值与第一预定阈值进行比较（S220）; 当所述第一空间活动度值小于所述第一预定阈值时，确定（S230）作为当前块的编码条件，用于小分区大小的第一编码条件; 以及当所述第一空间活动度值等于或大于所述第一预定阈值时，确定（S240）作为所述当前块的编码条件用于大分区大小的第二编码条件。

公开(公告)号：US20110026593A1

公开(公告)日：2011-02-03

申请号：US12936528

申请日：2010-01-14

申请人： Wei Lee New ,  Viktor Wahadaniah ,  Chong Soon Lim ,  Michael Bi Mi ,  Takeshi Tanaka ,  Takaaki Imanaka

发明人： Wei Lee New ,  Viktor Wahadaniah ,  Chong Soon Lim ,  Michael Bi Mi ,  Takeshi Tanaka ,  Takaaki Imanaka

IPC分类号： H04N11/04

CPC分类号： H03M7/42 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/18 ,  H04N19/182 ,  H04N19/184 ,  H04N19/428 ,  H04N19/48 ,  H04N19/59 ,  H04N19/61

摘要： An image processing apparatus (10) capable of reducing the bandwidth and capacity required for a frame memory and preventing image quality degradation includes: a selecting unit (14) that selectively switches between first and second processing modes, a frame memory (12); a storing unit (11) that (i) down-samples an input image by deleting predetermined frequency information included in the input image and stores the input image as a down-sampled image in the frame memory (12) when the switching unit switches to the first processing mode, and (ii) stores the input image without down-sampling in the frame memory (12) when the switching unit switches to the second processing mode; and a reading unit (13) that (i) reads out the down-sampled image from the frame memory (12) and up-samples the down-sampled image when the switching unit switches to the first processing mode, and (ii) reads out the input image without down-sampling from the frame memory (12) when the switching unit switches to the second processing mode.

摘要翻译： 一种能够降低帧存储器所需的带宽和容量并防止图像质量劣化的图像处理装置（10）包括：选择单元（14），其选择性地在第一和第二处理模式之间切换;帧存储器（12）; 存储单元（11），其特征在于，（i）通过删除输入图像中包含的预定频率信息来对输入图像进行下采样，并且当切换单元切换到时将输入图像作为下采样图像存储在帧存储器（12）中 第一处理模式，以及（ii）当切换单元切换到第二处理模式时，将没有下采样的输入图像存储在帧存储器（12）中; 和读取单元（13），（i）当切换单元切换到第一处理模式时，从帧存储器（12）读出下采样图像，并对下采样图像进行上采样，并且（ii）读 当切换单元切换到第二处理模式时，输出图像而不从帧存储器（12）进行下采样。