公开(公告)号：US09635382B2

公开(公告)日：2017-04-25

申请号：US13344778

申请日：2012-01-06

申请人： Minhua Zhou

发明人： Minhua Zhou

IPC分类号： H04N7/32 ,  H04N19/52

CPC分类号： H04N19/52

摘要： A prediction unit is identified within a picture of a video sequence. The prediction unit is bordered by neighboring prediction units within the picture. The neighboring prediction units include first and second neighboring prediction units that are separated from one another by at least a third neighboring prediction unit. A subset of the neighboring prediction units is scanned to identify an MVP candidate. The subset includes at least the first and second neighboring prediction units and excludes at least the third neighboring prediction unit. An encoder calculates a difference between a motion vector of the MVP candidate and a motion vector of the prediction unit, and encodes the difference and an index to identify the MVP candidate. A decoder decodes the difference, and calculates the motion vector of the prediction unit by adding the difference to the motion vector of the MVP candidate.

公开(公告)号：US09167252B2

公开(公告)日：2015-10-20

申请号：US13305560

申请日：2011-11-28

申请人： Minhua Zhou ,  Vivienne Sze

发明人： Minhua Zhou ,  Vivienne Sze

IPC分类号： H04N7/12 ,  H04N19/124 ,  H04N19/105 ,  H04N19/61 ,  H04N19/463 ,  H04N19/126 ,  H04N19/85 ,  H04N19/59 ,  H04N19/117 ,  H04N19/176 ,  H04N19/60

CPC分类号： H04N19/124 ,  H04L65/4069 ,  H04L65/607 ,  H04N19/105 ,  H04N19/117 ,  H04N19/126 ,  H04N19/176 ,  H04N19/184 ,  H04N19/463 ,  H04N19/59 ,  H04N19/60 ,  H04N19/61 ,  H04N19/85

摘要： A method of quantization matrix compression in a video encoder is provided that includes preprocessing a quantization matrix by performing at least one selected from down-sampling the quantization matrix and imposing 135 degree symmetry on the quantization matrix, performing zigzag scanning on the pre-processed quantization matrix to generate a one dimensional (1D) sequence, predicting the 1D sequence to generate a residual 1D sequence, and coding the residual 1D sequence using kth order exp-Golomb coding to generate a compressed quantization matrix, wherein k≧0.

摘要翻译： 提供了一种视频编码器中的量化矩阵压缩的方法，包括：通过执行从量化矩阵下采样和对量化矩阵施加135度对称性中选择的至少一个来预处理量化矩阵，对预处理的量化进行Z字形扫描 矩阵以产生一维（1D）序列，预测1D序列以产生残差1D序列，并使用第k阶exp-Golomb编码对剩余1D序列进行编码，以产生压缩量化矩阵，其中k≥0。

公开(公告)号：US08615043B2

公开(公告)日：2013-12-24

申请号：US13021405

申请日：2011-02-04

申请人： Minhua Zhou

发明人： Minhua Zhou

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N7/12

摘要： A method of compressing an image data block is provided that includes computing a pixel residual for each pixel in the image data block except a non-residual pixel, computing a compression level for the image data block based on a minimum pixel residual value and a maximum pixel residual value of the pixel residuals, encoding a compression flag for the image data block, wherein the compression flag includes an indicator identifying the compression level and a first portion of bits from the non-residual pixel, and generating a compressed block comprising a second portion of bits from the non-residual pixel and the pixel residuals encoded using fixed length coding based on the compression level.

摘要翻译： 提供一种压缩图像数据块的方法，包括：计算除了非残差像素之外的图像数据块中的每个像素的像素残差，基于最小像素残差值和最大像素残差计算图像数据块的压缩级别 对所述图像数据块进行压缩标志的编码，其中，所述压缩标志包括识别所述压缩级别的指示符和来自所述非残差像素的位的第一部分，以及生成包含第二数据块的压缩块 来自非残差像素的位的部分和使用基于压缩级的固定长度编码进行编码的像素残差。

公开(公告)号：US20120257678A1

公开(公告)日：2012-10-11

申请号：US13438406

申请日：2012-04-03

申请人： Minhua Zhou ,  Vivienne Sze

发明人： Minhua Zhou ,  Vivienne Sze

IPC分类号： H04N7/32 ,  H04N7/12

CPC分类号： H04N19/56 ,  H04N19/172 ,  H04N19/176 ,  H04N19/436 ,  H04N19/52 ,  H04N19/96

摘要： Methods for improved parallel motion estimation are provided that decouple the merging candidate list derivation and motion estimation for merge mode and skip mode and the advanced motion vector predictor (AMVP) candidate list construction from regular motion estimation to increase the coding quality in parallel motion estimation while meeting throughput requirements. This decoupling may be accomplished by modifying the availability rules for spatial motion data (SMD) positions for construction of the candidate lists. As part of the decoupling, largest coding units (LCUs) of a picture may be divided into non-overlapping parallel motion estimation regions (PMER) of equal size. Within a PMER, motion estimation for merge mode, skip mode, and normal inter-prediction mode may be performed in parallel for all the prediction units (PUs) in the PMER.

摘要翻译： 提供了一种用于改进的并行运动估计的方法，其从合并模式和跳过模式以及高级运动矢量预测器（AMVP）候选列表构造的合并候选列表导出和运动估计与常规运动估计分离，以增加并行运动估计中的编码质量， 满足吞吐量要求。 该解耦可以通过修改用于构建候选列表的空间运动数据（SMD）位置的可用性规则来实现。 作为解耦的一部分，图像的最大编码单元（LCU）可以被划分成相同大小的非重叠并行运动估计区域（PMER）。 在PMER中，可以对PMER中的所有预测单元（PU）并行执行合并模式，跳过模式和正常帧间预测模式的运动估计。

公开(公告)号：US20120183080A1

公开(公告)日：2012-07-19

申请号：US13350069

申请日：2012-01-13

申请人： Minhua Zhou

发明人： Minhua Zhou

IPC分类号： H04N7/24

CPC分类号： H04N19/61 ,  H04N19/119 ,  H04N19/157 ,  H04N19/176

摘要： A method and apparatus for a low complexity transform unit partitioning structure for High Efficiency Video Coding (HEVC). The method includes determining prediction unit size of a coding unit, and setting the size of transform unit size of Y, U and V according to the prediction unit size of the coding unit.

摘要翻译： 一种用于高效率视频编码（HEVC）的低复杂度变换单元划分结构的方法和装置。 该方法包括确定编码单元的预测单元大小，并根据编码单元的预测单元大小来设置Y，U和V的变换单元大小的大小。

公开(公告)号：US07778813B2

公开(公告)日：2010-08-17

申请号：US10917981

申请日：2004-08-13

申请人： Minhua Zhou

发明人： Minhua Zhou

IPC分类号： G06F17/50

CPC分类号： H04N19/124 ,  H04N19/136 ,  H04N19/176

摘要： Modify H.263-type quantization with an adaptive quantization parameter floor; this limits clipping of quantized DCT coefficients and consequent artifacts. The maximum absolute level of AC coefficients of a DCT transformed macroblock provides a minimum quantization parameter from integer division by 256 when the quantized levels are clipped to a range such as −127 to +127.

摘要翻译： 用自适应量化参数值修改H.263型量化; 这限制了量化DCT系数的削波和随之而来的伪像。 当DCT量化的电平被限制到诸如-127到+127的范围时，DCT变换的宏块的AC系数的最大绝对电平在整除256时提供最小的量化参数。

公开(公告)号：US07778327B2

公开(公告)日：2010-08-17

申请号：US11347338

申请日：2006-02-03

申请人： Minhua Zhou

发明人： Minhua Zhou

IPC分类号： H04N7/12

CPC分类号： H04N19/42 ,  H04N19/124 ,  H04N19/126 ,  H04N19/152 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61

摘要： Low complexity (16 bit arithmetic) H.264 video compression replaces a single quantization table for all quantization parameters with multiple quantization tables and thereby equalizes quantization shifts and round-off additions; this eliminates the need for 32-bit accesses.

摘要翻译： 低复杂度（16位运算）H.264视频压缩用多个量化表替换所有量化参数的单个量化表，从而均衡量化偏移和舍入加法; 这消除了对32位访问的需要。

公开(公告)号：US20080317134A1

公开(公告)日：2008-12-25

申请号：US12203299

申请日：2008-09-03

申请人： Minhua Zhou

发明人： Minhua Zhou

IPC分类号： H04N11/02

CPC分类号： H04N7/15 ,  H04N19/102 ,  H04N19/184 ,  H04N19/423 ,  H04N19/70

摘要： A low-complexity method for prevention of H.264 start code emulation by bit-handling routines with additional functionality. The low-complexity is achieved by employing a start code pre-determination scheme, which saves bitstream handling complexity by about 50% and 30% on the encoder and decoder sides, respectively. The start code emulation prevention has been embedded into the low-level bitstream handling routines. By doing so it avoids the use of the second bitstream buffer, maintains the decoder ability of using a circular bitstream buffer, and satisfies the BURST-aligned SDRAM access requirement.

摘要翻译： 一种低复杂度的方法，用于通过具有附加功能的位处理例程来预防H.264开始代码仿真。 低复杂度是通过采用起始码预先确定方案实现的，该方案分别在编码器和解码器侧将比特流处理复杂度保持在约50％和30％。 起始码仿真预防已经嵌入到低级位流处理程序中。 通过这样做避免使用第二比特流缓冲器，保持解码器使用圆形比特流缓冲器的能力，并满足BURST对齐的SDRAM访问要求。

公开(公告)号：US20060029135A1

公开(公告)日：2006-02-09

申请号：US11158973

申请日：2005-06-22

申请人： Minhua Zhou ,  Wai-Ming Lai

发明人： Minhua Zhou ,  Wai-Ming Lai

IPC分类号： H04N7/12 ,  H04N11/04 ,  H04B1/66 ,  H04N11/02

CPC分类号： H04N19/86 ,  H04N19/423

摘要： The in-loop deblocking filter for H.264 video coding has additional buffers for in-place filtering and minimizing memory transfers. One buffer holds a reconstructed macroblock plus columns of the left prior macroblock pixels for vertical edge filtering and plus rows of the top macroblock pixels for horizontal edge filtering; and the other buffer holds the bottom pixel rows of all of the macroblocks of the preceding row of macroblocks.

摘要翻译： 用于H.264视频编码的循环去块滤波器具有用于就地滤波和最小化存储器传输的附加缓冲器。 一个缓冲器保存重建的宏块加上用于垂直边缘滤波的左前一宏块像素的列和加上用于水平边缘滤波的顶部宏块像素的行; 并且另一个缓冲器保持前一行宏块的所有宏块的底部像素行。

公开(公告)号：US20060002468A1

公开(公告)日：2006-01-05

申请号：US11158684

申请日：2005-06-22

申请人： Minhua Zhou ,  Wai-Ming Lai

发明人： Minhua Zhou ,  Wai-Ming Lai

IPC分类号： H04B1/66 ,  H04N11/02 ,  H04N11/04 ,  H04N7/12

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/423 ,  H04N19/433 ,  H04N19/61 ,  H04N19/82

摘要： The memory access efficiency for video decoding is maximized by interleaved storage of luminance and chrominance data. Macroblocks of luminance and chrominance interleave to blocks of 16×32 by repeating chrominance rows.

摘要翻译： 视频解码的存储器访问效率通过亮度和色度数据的交错存储来最大化。 通过重复色度行，亮度和色度的宏块交错到16×32的块。