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41. 发明授权

US07280597B2 System and method for determining coding modes, DCT types and quantizers for video coding 失效
标题翻译：用于确定编码模式的系统和方法，用于视频编码的DCT类型和量化器
公开(公告)号：US07280597B2
公开(公告)日：2007-10-09
申请号：US10602963
申请日：2003-06-24
申请人： Ximin Zhang , Hao-Song Kong , Anthony Vetro , Huifang Sun
发明人： Ximin Zhang , Hao-Song Kong , Anthony Vetro , Huifang Sun
IPC分类号： H04N7/12 , H04N11/02
CPC分类号： H04N19/192 , H04N19/112 , H04N19/122 , H04N19/124 , H04N19/147 , H04N19/149 , H04N19/172 , H04N19/19 , H04N19/196 , H04N19/197 , H04N19/61
摘要： A method encodes a video by first measuring a variance of pixel intensities in a current frame. A number of bits to encode the current frame is assigned according to rate and buffer fullness constraints. A multiplier value is determined directly as a function of only the variance and the number of bits assigned to the current frame. Motion vectors between a reference frame and the current frame are estimated, and a sum of absolute difference (SAD) is based on a motion compensated residual between the reference frame and the current frame. An encoding mode is determined for each macro block in the current frame based on the sum of absolute difference, the motion vectors and the multiplier value. Then, the motion compensated residual is encoded based on the encoding mode, multiplier value and the number of allocated bits.
摘要翻译：一种方法通过首先测量当前帧中的像素强度的方差来对视频进行编码。根据速率和缓冲区满足约束来分配对当前帧进行编码的位数。根据分配给当前帧的方差和比特数，直接确定乘数值。估计参考帧与当前帧之间的运动向量，并且绝对差（SAD）之和基于参考帧与当前帧之间的运动补偿残差。基于绝对差，运动矢量和乘数值之和确定当前帧中的每个宏块的编码模式。然后，基于编码模式，乘数值和分配位数来对运动补偿残差进行编码。

42. 发明授权

US08259793B2 System and method of fast MPEG-4/AVC quantization 失效
标题翻译：快速MPEG-4 / AVC量化的系统和方法
公开(公告)号：US08259793B2
公开(公告)日：2012-09-04
申请号：US11688130
申请日：2007-03-19
申请人： Ximin Zhang
发明人： Ximin Zhang
IPC分类号： H04N7/12
CPC分类号： H04N19/18 , H04N19/126 , H04N19/132 , H04N19/139 , H04N19/14 , H04N19/149 , H04N19/176 , H04N19/61 , H04N19/91
摘要： A system and method for coding moving pictures according to MPEG-4/AVC is described which performs rapid quantization of the transformed residue signal is described. The system and method may employ a number of techniques, which may be considered separately or in combination, including: extreme macroblock (MB) analysis, pre-execution table generation, conditional skipping, and picture level scaling. For example, MBs are detected wherein the quantization scale is adapted prior to quantization processing. The quantization process can be skipped for DCT coefficients which do not meet a threshold criterion. Weighted quantization can be readily performed in response to generating sets of scaled quantization tables in the beginning of encoding each picture, wherein the quantization scale of the DCT coefficients need not be scaled in response to position.
摘要翻译：描述了一种用于编码根据MPEG-4 / AVC的运动图像的系统和方法，其描述了进行变换的残留信号的快速量化。系统和方法可以采用多种技术，其可以单独地或组合地考虑，包括：极限宏块（MB）分析，预执行表生成，条件跳过和图像级缩放。例如，检测MB，其中量化尺度在量化处理之前被适配。可以跳过不符合阈值标准的DCT系数的量化处理。加权量化可以在编码每个图像的开始时响应于生成的缩放量化表集合容易地执行，其中DCT系数的量化尺度不需要根据位置进行缩放。

43. 发明申请

US20080165852A1 VIDEO CODING SYSTEM 有权
标题翻译：视频编码系统
公开(公告)号：US20080165852A1
公开(公告)日：2008-07-10
申请号：US11620598
申请日：2007-01-05
申请人： Ximin Zhang
发明人： Ximin Zhang
IPC分类号： H04N7/12
CPC分类号： H04N19/17 , H04N19/124 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/177 , H04N19/513 , H04N19/61
摘要： A video coding system is provided including generating a motion vector for a macro block in a picture, the motion vectors indicative of displacement of an object in the macro block; grouping a cluster of the motion vectors; and adjusting a dynamic quantization parameter modulation of a subsequent picture based on the grouping for displaying the displacement of the object in the subsequent picture.
摘要翻译：提供了一种视频编码系统，包括生成图像中的宏块的运动矢量，指示宏块中的对象的位移的运动矢量; 对一组运动矢量进行分组; 以及基于用于显示随后图像中的对象的位移的分组来调整后续图像的动态量化参数调制。

44. 发明授权

US10499063B2 Method and apparatus for prediction mode and partition mode syntax coding for coding units in HEVC 有权
公开(公告)号：US10499063B2
公开(公告)日：2019-12-03
申请号：US14342357
申请日：2012-08-29
申请人： Ximin Zhang , Shan Liu
发明人： Ximin Zhang , Shan Liu
IPC分类号： H04N19/157 , H04N19/159 , H04N19/70 , H04N19/13 , H04N19/174
CPC分类号： H04N19/159 , H04N19/13 , H04N19/174 , H04N19/70
摘要： A method and apparatus for coding of syntax elements are disclosed to allow prediction units in P and B slices to share the same syntax coding table. In one embodiment according to the present invention, the method and apparatus coding of syntax elements selectively apply a syntax coding table to encode or decode the syntax element associated with the partition mode of a coding unit of a picture region according to the slice type of the picture region. A first syntax coding table is used to process the syntax element if the slice type is an I mode and a second syntax coding table is used to process the syntax element if the slice type is not an I mode.

45. 发明授权

US09560347B2 Method and system of transform block processing according to quantization matrix in video coding 有权
标题翻译：根据视频编码中的量化矩阵进行变换块处理的方法和系统
公开(公告)号：US09560347B2
公开(公告)日：2017-01-31
申请号：US14234505
申请日：2012-08-21
申请人： Ximin Zhang , Shan Liu
发明人： Ximin Zhang , Shan Liu
IPC分类号： H04B1/66 , G06K9/36 , H04N19/122 , H04N19/124 , H04N19/115 , H04N7/26 , H04N11/02 , G06K9/32 , H04N19/196 , H04N19/176 , H04N19/70 , H04N19/60 , H04N19/126 , H04N19/18 , H04N19/80
CPC分类号： H04N19/126 , H04N19/122 , H04N19/176 , H04N19/18 , H04N19/197 , H04N19/198 , H04N19/60 , H04N19/70 , H04N19/80
摘要： A method and system process transform blocks according to quantization matrices in a video coding system. Embodiments of the present invention derive one or more derived quantization matrices from one or more initial quantization matrices or from one previously derived quantization matrix. In one embodiment, the initial quantization matrices include a 4×4 and 8×8 quantization matrices, which can be either default or user-defined. All quantization matrices larger than 8×8 can be derived from the 4×4 and 8×8 initial quantization matrices. Non-square quantization matrices can be derived from at least one initial square quantization matrix or at least one derived square quantization matrix. Individual initial quantization matrices may be used to derive respective larger quantization matrices. Furthermore, the individual initial quantization matrices may be derived from larger quantization matrices designed for corresponding transform sizes. Syntax design also enables the quantization matrix representation.
摘要翻译：一种方法和系统处理根据视频编码系统中的量化矩阵来变换块。本发明的实施例从一个或多个初始量化矩阵或从一个先前导出的量化矩阵导出一个或多个导出的量化矩阵。在一个实施例中，初始量化矩阵包括4×4和8×8个量化矩阵，其可以是默认的或用户定义的。大于8×8的所有量化矩阵可以从4×4和8×8个初始量化矩阵导出。可以从至少一个初始平方量化矩阵或至少一个导出的平方量化矩阵导出非平方量化矩阵。各个初始量化矩阵可以用于导出相应较大的量化矩阵。此外，各个初始量化矩阵可以从为相应的变换大小设计的较大的量化矩阵导出。语法设计还支持量化矩阵表示。

46. 发明申请

US20140211850A1 METHOD AND APPARATUS FOR PREDICTION MODE AND PARTITION MODE SYNTAX CODIND FOR CODING UNITS IN HEVC 审中-公开
标题翻译：用于HEVC中编码单元的预测模式和分割模式语法编码的方法和装置
公开(公告)号：US20140211850A1
公开(公告)日：2014-07-31
申请号：US14342357
申请日：2012-08-29
申请人： Ximin Zhang , Shan Liu
发明人： Ximin Zhang , Shan Liu
IPC分类号： H04N19/157 , H04N19/66 , H04N19/169 , H04N19/174
CPC分类号： H04N19/159 , H04N19/13 , H04N19/174 , H04N19/70
摘要： A method and apparatus for coding of syntax elements are disclosed to allow prediction units in P and B slices to share the same syntax coding table. In one embodiment according to the present invention, the method and apparatus coding of syntax elements selectively apply a syntax coding table to encode or decode the syntax element associated with the partition mode of a coding unit of a picture region according to the slice type of the picture region. A first syntax coding table is used to process the syntax element if the slice type is an I mode and a second syntax coding table is used to process the syntax element if the slice type is not an I mode.
摘要翻译：公开了用于编码语法元素的方法和装置，以允许P和B片段中的预测单元共享相同的语法编码表。在根据本发明的一个实施例中，语法元素的方法和装置编码选择性地应用语法编码表，以根据图像区域的切片类型来编码或解码与图像区域的编码单元的分割模式相关联的语法元素图片区域。如果片类型是I模式，则第一语法编码表用于处理语法元素，并且如果片类型不是I模式，则使用第二语法编码表来处理语法元素。

47. 发明申请

US20080181311A1 VIDEO SYSTEM 有权
标题翻译：视频系统
公开(公告)号：US20080181311A1
公开(公告)日：2008-07-31
申请号：US11669941
申请日：2007-01-31
申请人： Ximin Zhang , Hung-Ju Lee
发明人： Ximin Zhang , Hung-Ju Lee
IPC分类号： H04B1/66
CPC分类号： H04N19/19 , H04N19/122 , H04N19/136 , H04N19/147 , H04N19/154 , H04N19/176
摘要： A video system is provided including applying a transform to a picture for generating a transformed block of the picture; determining a type of the picture; selecting a coding mode with the transformed block based on the type of the picture; and applying the coding mode to the picture for encoding and displaying the picture.
摘要翻译：提供了一种视频系统，包括对图像进行变换以产生图像的变换块; 确定图片的类型; 基于图像的类型选择具有变换块的编码模式; 以及将编码模式应用于用于对图像进行编码和显示的图像。

48. 发明申请

US20070274396A1 Complexity adaptive skip mode estimation for video encoding 审中-公开
标题翻译：视频编码的复杂度自适应跳过模式估计
公开(公告)号：US20070274396A1
公开(公告)日：2007-11-29
申请号：US11441975
申请日：2006-05-26
申请人： Ximin Zhang , Hung-Ju Lee
发明人： Ximin Zhang , Hung-Ju Lee
IPC分类号： H04N11/04 , H04N7/12
CPC分类号： H04N19/132 , H04N19/103 , H04N19/176
摘要： In a system and method for coding moving pictures, the cost of skip mode is estimated to determine the best coding mode. Skip mode selection within the framework of the AVC standard is improved by complexity based threshold determination, penalty modulation level adjustment and bias modulation level adjustment for the encoding mode selection.
摘要翻译：在用于编码运动图像的系统和方法中，估计跳过模式的成本以确定最佳编码模式。通过基于复杂度的阈值确定，惩罚调制电平调整和编码模式选择的偏置调制电平调整来改进在AVC标准的框架内的跳过模式选择。

49. 发明申请

US20070217516A1 Uni-modal based fast half-pel and fast quarter-pel refinement for video encoding 有权
标题翻译：基于单模式的快速半像素和快速四分之一像素细化用于视频编码
公开(公告)号：US20070217516A1
公开(公告)日：2007-09-20
申请号：US11378148
申请日：2006-03-16
申请人： Ximin Zhang
发明人： Ximin Zhang
IPC分类号： H04N11/04 , H04N7/12
CPC分类号： H04N19/577 , H04N19/523
摘要： A method of half-pixel interpolation and quarter-pixel interpolation are adapted for reducing the impact of aliasing within motion estimation. To estimate a motion vector with quarter-pixel accuracy more efficiently, the improved method is able to skip checking certain points using the uni-modal assumption. In an embodiment, a diamond based refinement is implemented. Within the diamond based refinement are half-pel refinement and quarter-pel refinements. Furthermore, within the half-pel refinement are methods for on-the-fly interpolation and pre-computed interpolation. Within quarter-pel refinement, the method depends on whether four neighbor half-pel points are checked or just one or two half-pel points. Moreover, within each of the different embodiments is the ability to focus on quality or speed wherein different methods are implemented to maximize the desired function. In another embodiment, a square based refinement is implemented.
摘要翻译：半像素内插和四分之一像素插值的方法适用于减少运动估计中混叠的影响。为了更有效地估计四分之一像素精度的运动矢量，改进的方法能够使用单模假设跳过检查某些点。在一个实施例中，实现了基于钻石的细化。在基于钻石的细化中，是半像素细化和四分之一像素细化。此外，在半像素细化中是用于即时插值和预先计算的内插的方法。在四分之一像素细化中，该方法取决于是检查四个相邻半像素点还是仅检测一个或两个半像素点。此外，在每个不同的实施例中，能够专注于质量或速度，其中实施不同的方法以最大化期望的功能。在另一个实施例中，实现了基于平方的细化。

50. 发明授权

US06925120B2 Transcoder for scalable multi-layer constant quality video bitstreams 失效
标题翻译：用于可扩展多层恒定质量视频比特流的转码器
公开(公告)号：US06925120B2
公开(公告)日：2005-08-02
申请号：US09961987
申请日：2001-09-24
申请人： Ximin Zhang , Anthony Vetro , Yun-Qing Shi , Huifang Sun
发明人： Ximin Zhang , Anthony Vetro , Yun-Qing Shi , Huifang Sun
IPC分类号： H04N7/26 , H04N21/2343 , H04N21/2365 , H04N21/24 , H04N21/2662 , H04N21/434 , H04N21/4402 , H04N7/12
CPC分类号： H04N21/2662 , H04N19/147 , H04N19/154 , H04N19/19 , H04N19/33 , H04N19/34 , H04N19/40 , H04N21/234327 , H04N21/23655 , H04N21/2402 , H04N21/4347
摘要： A method codes an output bitstream of an input video so the decoded output bitstream has a constant perceived quality. A base layer bitstream having a constant bit-rate is generated from the input video, and an input enhancement layer bitstream is generated from a difference between the input video and the base layer bitstream. Rate and distortion characteristics are extracted from the base layer bitstream and the input enhancement layer bitstream, and an output enhancement layer bitstream having a variable bit-rate is generated from the input enhancement layer bitstream according to the rate and distortion characteristics. The base layer bitstream and the output enhancement layer bitstream, in combination, form an output bitstream having a variable bit-rate and a constant distortion.
摘要翻译：一种方法对输入视频的输出比特流进行编码，使得解码的输出比特流具有恒定的感知质量。从输入视频产生具有恒定比特率的基本层比特流，并且从输入视频和基本层比特流之间的差异生成输入增强层比特流。从基本层比特流和输入增强层比特流中提取速率和失真特性，并且根据速率和失真特性从输入增强层比特流生成具有可变比特率的输出增强层比特流。基本层比特流和输出增强层比特流组合形成具有可变比特率和恒定失真的输出比特流。

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