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71. 发明授权

US07418037B1 Method of performing rate control for a compression system 有权
标题翻译：对压缩系统执行速率控制的方法
公开(公告)号：US07418037B1
公开(公告)日：2008-08-26
申请号：US10427669
申请日：2003-04-30
申请人： Xiaochun Nie , Thomas Pun , Roger Kumar , Hsi-Jung Wu
发明人： Xiaochun Nie , Thomas Pun , Roger Kumar , Hsi-Jung Wu
IPC分类号： H04N7/18
CPC分类号： H04N19/154 , H04N19/115 , H04N19/14 , H04N19/149 , H04N19/159 , H04N19/172 , H04N19/61
摘要： A rate controller for allocating a bit budget for video frames to be encoded is disclosed. The rate controller of the present invention considers many different factors when determining the frame bit budget including: desired video quality, target bit rate, frame type (intra-frame or inter-frame), frame duration, intra-frame frequency, frame complexity, intra-block frequency within an intra-frame, buffer overflow, buffer underflow, and the encoded video frame quality for a possible second pass.
摘要翻译：公开了一种用于分配要编码的视频帧的位预算的速率控制器。本发明的速率控制器在确定帧位预算时考虑许多不同的因素，包括：期望的视频质量，目标比特率，帧类型（帧内或帧间），帧持续时间，帧内频率，帧复杂度，帧内的块内频率，缓冲器溢出，缓冲器下溢以及用于可能的第二遍的编码视频帧质量。

72. 发明授权

US07376280B2 Video encoding and decoding 失效
标题翻译：视频编码和解码
公开(公告)号：US07376280B2
公开(公告)日：2008-05-20
申请号：US10427889
申请日：2003-04-30
申请人： Maynard Handley , Roger Kumar , Thomas Pun , Xiaochun Nie , Hsi-Jung Wu
发明人： Maynard Handley , Roger Kumar , Thomas Pun , Xiaochun Nie , Hsi-Jung Wu
IPC分类号： G06K9/36 , G06K9/46 , H04B1/66 , H04N1/41 , H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/60 , H04N19/122 , H04N19/129
摘要： A method for encoding video with a two-dimensional (2D) transform separable to two one-dimensional (1D) transforms. The method receives an array of values for a sub-section of an image, performs a first 1D-transform of the array, transposes the resulting array, and performs a second 1D-transform of the array resulting from the transpose. The method, without performing another transpose, generates a data stream using a transposed scan order based on the values of the array resulting from the second transform. A method for decoding video encoded by a 2D transform, which separable to two 1D transforms. The method receives a data stream containing encoded values for an image, parses out the values into an array using a transposed scan order, performs a first 1D-inverse transform on the array, transposes the resulting array, and performs a second 1D-inverse transform of the array resulting from the transpose to produce a decoded output.
摘要翻译：一种用二维（2D）变换对两维（1D）变换进行分割的视频进行编码的方法。该方法接收图像的子部分的值阵列，执行阵列的第一个1D变换，转置结果数组，并对转置产生的数组执行第二个1D变换。该方法在不执行另一个转置的情况下，使用基于由第二变换产生的数组的值的转置扫描顺序生成数据流。一种用于对通过2D变换编码的视频进行解码的方法，其可分为两个1D变换。该方法接收包含图像的编码值的数据流，使用转置的扫描顺序将值解析为数组，对阵列执行第一1D逆变换，转置得到的阵列，并执行第二1D逆变换由转置产生的阵列产生解码输出。

73. 发明申请

US20050175091A1 Rate and quality controller for H.264/AVC video coder and scene analyzer therefor 有权
标题翻译： H.264 / AVC视频编码器和场景分析仪的速率和质量控制器
公开(公告)号：US20050175091A1
公开(公告)日：2005-08-11
申请号：US10811982
申请日：2004-03-30
申请人： Atul Puri , Barin Haskell , Adriana Dumitras , James Normile , Hsi-Jung Wu , Xiaochun Nie
发明人： Atul Puri , Barin Haskell , Adriana Dumitras , James Normile , Hsi-Jung Wu , Xiaochun Nie
IPC分类号： H04N7/12 , H04N7/26 , H04N7/36 , H04N7/46 , H04N7/50
CPC分类号： H04N19/198 , H04N19/115 , H04N19/124 , H04N19/132 , H04N19/137 , H04N19/14 , H04N19/149 , H04N19/159 , H04N19/169 , H04N19/172 , H04N19/18 , H04N19/194 , H04N19/196 , H04N19/51 , H04N19/59 , H04N19/61
摘要： A rate control system is disclosed for video coding applications. The rate controller assigns a quantization parameter for video data in a picture in response to complexity indicators indicative of spatial complexity, motion complexity and/or bits per pel of the picture. A virtual buffer based quantizer parameter is proposed based on a virtual buffer fullness analysis and a target rate estimate, which is derived from the complexity indicators. A second quantizer parameter is proposed from a linear regression analysis of quantizer parameters used to code previously coded pictures of similar type (e.g., I pictures, P pictures or B pictures). A coding policy decision unit defines a final quantizer parameter from a comparison of the two proposed quantizer parameters.
摘要翻译：公开了一种用于视频编码应用的速率控制系统。速率控制器响应于表示图像的空间复杂度，运动复杂度和/或每像素的复杂度指示符，为图像中的视频数据分配量化参数。基于虚拟缓冲区丰满度分析和目标速率估计提出了一种基于虚拟缓冲器的量化器参数，该参数是从复杂性指标中得出的。从用于对先前编码的类似类型的图像（例如，I图像，P图像或B图像）进行编码的量化器参数的线性回归分析提出了第二量化参数。编码策略决定单元根据两个提出的量化器参数的比较来定义最终的量化器参数。

74. 发明授权

US06229917B1 Digital image coding system having self-adjusting selection criteria for selecting a transform function 有权
标题翻译：具有用于选择变换函数的自适应选择标准的数字图像编码系统
公开(公告)号：US06229917B1
公开(公告)日：2001-05-08
申请号：US09396084
申请日：1999-09-14
申请人： Hsi-Jung Wu , Yu Tina Tian , Jian Lu , Ke-Chiang Chu
发明人： Hsi-Jung Wu , Yu Tina Tian , Jian Lu , Ke-Chiang Chu
IPC分类号： G06K900
CPC分类号： G06T9/007 , H04N19/122 , H04N19/132 , H04N19/139 , H04N19/14 , H04N19/154 , H04N19/176 , H04N19/18 , H04N19/196 , H04N19/198 , H04N19/61
摘要： In a digital signal processing system, a method for selecting a transform function to apply to an input signal based on characteristics of the signal, and for self-adjusting criteria which are used in selecting a transform function to apply to a subsequent signal. Characteristics are obtained from the signal. The characteristics are compared to adjustable criteria which are used in selecting a transform function. Differing criteria are maintained for the different selectable transform functions. A record is maintained of transform functions selected and the particular characteristics that caused the selection. Based on the ability of a transform function to minimally define the coded signal, an inverse transform function is selected to decode the signal. The criteria used in selecting a transform function to apply to a subsequent signal are adjusted based on a quality measure of the decoded signal and the record of selected transform functions.
摘要翻译：在数字信号处理系统中，提供了一种用于根据信号的特性选择适用于输入信号的变换函数的方法，以及用于选择变换函数以应用于后续信号的自调整准则的方法。从信号获得特性。将特征与用于选择变换函数的可调标准进行比较。对于不同的可选变换函数维持不同的标准。保留所选择的变换函数和导致选择的特定特征的记录。基于变换函数最小化定义编码信号的能力，选择逆变换函数来对信号进行解码。基于解码信号的质量测量和所选择的变换函数的记录来调整用于选择应用于后续信号的变换函数的标准。

75. 发明授权

US09602819B2 Display quality in a variable resolution video coder/decoder system 有权
公开(公告)号：US09602819B2
公开(公告)日：2017-03-21
申请号：US13018339
申请日：2011-01-31
申请人： Hsi-Jung Wu , Xiaosong Zhou , Douglas Price
发明人： Hsi-Jung Wu , Xiaosong Zhou , Douglas Price
IPC分类号： H04N7/32 , H04N19/105 , H04N19/59 , H04N19/577
CPC分类号： H04N19/105 , H04N19/577 , H04N19/59
摘要： In a video coder/decoder system using variable resolution adaptation, decoder techniques provide a mechanism to changing resolution of coded lower-resolution video to a higher resolution for rendering. Coded video data of a low resolution frame may be decoded. A motion estimation search may be performed between the decoded low resolution frame and a cache of previously-stored high resolution video frames. If the motion estimation search generates one or more matches, high resolution video data of the decoded frame may generated as a derivation of matching data from the cached video frames.

76. 发明授权

US09215466B2 Joint frame rate and resolution adaptation 有权
标题翻译：联合帧速率和分辨率适应
公开(公告)号：US09215466B2
公开(公告)日：2015-12-15
申请号：US13018298
申请日：2011-01-31
申请人： Jiefu Zhai , Xiaosong Zhou , Hsi-Jung Wu
发明人： Jiefu Zhai , Xiaosong Zhou , Hsi-Jung Wu
IPC分类号： H04N7/32 , H04N19/156 , H04N19/61 , H04N19/126 , H04N19/146
CPC分类号： H04N19/156 , H04N19/126 , H04N19/146 , H04N19/61
摘要： A video coder employs techniques for applying frame rate adaptation and variable resolution adaptation in response to environmental coding factors present at the coding terminal. According to such techniques, a coder may estimate a coding quality level to be applied based on the environmental coding factors. The coder may retrieve from a controller table, settings for resolution and frame rate based on the estimated quality level. Optionally, the coder further may retrieve settings identifying a range of quantization parameters that may be used during coding. Prior to coding, the coder may configure input video data to match the resolution and frame rate settings retrieved from the controller table. Thereafter, the coder may code the reconfigured input video data by motion-compensation prediction constrained, as applicable, by the retrieved quantization parameter range.
摘要翻译：视频编码器根据存在于编码终端处的环境编码因素，采用应用帧速率适配和可变分辨率自适应的技术。根据这样的技术，编码器可以基于环境编码因素估计要应用的编码质量等级。编码器可以根据估计的质量水平从控制器表检索分辨率和帧速率的设置。可选地，编码器还可以检索识别可能在编码期间使用的量化参数的范围的设置。在编码之前，编码器可以配置输入视频数据以匹配从控制器表检索的分辨率和帧率设置。此后，编码器可以通过运动补偿预测约束（如适用）通过检索的量化参数范围对重新配置的输入视频数据进行编码。

77. 发明授权

US09137535B2 Method for implementing a quantizer in a multimedia compression and encoding system 有权
标题翻译：在多媒体压缩和编码系统中实现量化器的方法
公开(公告)号：US09137535B2
公开(公告)日：2015-09-15
申请号：US12820106
申请日：2010-06-21
申请人： Thomas Pun , Roger Kumar , Xiaochun Nie , Hsi-Jung Wu
发明人： Thomas Pun , Roger Kumar , Xiaochun Nie , Hsi-Jung Wu
IPC分类号： H04N7/18 , H04N19/126 , H04N19/196 , H04N19/176 , H04N19/149 , H04N19/61
CPC分类号： H04N19/126 , H04N19/146 , H04N19/149 , H04N19/176 , H04N19/196 , H04N19/197 , H04N19/61 , H04N19/625
摘要： Method For Implementing A Quantizer In A Multimedia Compression And Encoding System is disclosed. In the Quantizer system of the present invention, several new quantization ideas are disclosed. In one embodiment, adjacent macroblocks are grouped together into macroblock groups. The macroblock groups are then assigned a common quantizer value. The common quantizer value may be selected based upon how the macroblocks are encoded, the type of macroblocks within the macroblock group (intra-blocks or inter-blocks), the history of the motion vectors associated with the macroblocks in the macroblock group, the residuals of the macroblocks in the macroblock group, and the energy of the macroblocks in the macroblock group. The quantizer value may be adjusted in a manner that is dependent on the current quantizer value. Specifically, if the quantizer value is at the low end of the quantizer scale, then only small adjustments are made. If the quantizer value is at the high end then larger adjustments may be made to the quantizer. Finally, in one embodiment, the quantizer is implemented along with an inverse quantizer for efficient operation.
摘要翻译：公开了一种在多媒体压缩和编码系统中实现量化器的方法。在本发明的量化器系统中，公开了几种新的量化思想。在一个实施例中，相邻宏块被分组在一起成为宏块组。然后向宏块组分配一个公共量化器值。可以基于宏块如何编码，宏块组（块内或块内）中的宏块的类型，与宏块组中的宏块相关联的运动向量的历史来选择公共量化器值，残差的宏块组中的宏块的能量，以及宏块组中的宏块的能量。量化器值可以以取决于当前量化器值的方式进行调整。具体地，如果量化器值处于量化器标尺的低端，则仅进行小的调整。如果量化器值处于高端，则可以对量化器进行较大的调整。最后，在一个实施例中，量化器与用于有效操作的逆量化器一起被实现。

78. 发明授权

US08964838B2 Video coding system using sub-channels and constrained prediction references to protect against data transmission errors 有权
标题翻译：视频编码系统使用子信道和约束预测参考，以防止数据传输错误
公开(公告)号：US08964838B2
公开(公告)日：2015-02-24
申请号：US13175079
申请日：2011-07-01
申请人： Dazhong Zhang , Hsi-Jung Wu , Xiaosong Zhou
发明人： Dazhong Zhang , Hsi-Jung Wu , Xiaosong Zhou
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N21/2343 , H04N21/2381 , H04N21/438 , H04N21/63 , H04N21/6583 , H04N19/61 , H04N19/37 , H04N19/157 , H04N19/166 , H04N19/89 , H04N19/31
CPC分类号： H04N21/234381 , H04N19/157 , H04N19/166 , H04N19/31 , H04N19/37 , H04N19/61 , H04N19/89 , H04N21/2381 , H04N21/4381 , H04N21/631 , H04N21/6583
摘要： A coding technique is disclosed in which frames of a video sequence are assigned to one of a plurality of sub-channels to be transmitted to a decoder. The frames are coded according to predictive coding techniques such that ordinarily prediction references of the frames in each sub-channel only reach the reference frames that occur within the same sub-channel. Thus, if transmission errors arise with respect to one sub-channel, decoding may occur for another sub-channel until the transmission error is detected and corrected.
摘要翻译：公开了一种编码技术，其中将视频序列的帧分配给多个子信道之一以发送到解码器。帧根据预测编码技术进行编码，使得每个子信道中的帧的通常预测参考仅到达发生在相同子信道内的参考帧。因此，如果相对于一个子信道出现传输错误，则对于另一个子信道可能发生解码，直到检测和纠正传输错误。

79. 发明授权

US08874090B2 Remote control operations in a video conference 有权
标题翻译：视频会议中的遥控操作
公开(公告)号：US08874090B2
公开(公告)日：2014-10-28
申请号：US12794772
申请日：2010-06-06
申请人： Joe S. Abuan , James O. Normile , Hsi-Jung Wu , Haitao Guo , Douglas S. Price , Xiaosong Zhou , Dazhong Zhang , Berkat S. Tung , Roberto Garcia, Jr. , Hyeonkuk Jeong , Yan Yang , David A. Eldred , Elizabeth C. Cranfill , Andrew Yanowitz , Ting Chen , David D. Kuo
发明人： Joe S. Abuan , James O. Normile , Hsi-Jung Wu , Haitao Guo , Douglas S. Price , Xiaosong Zhou , Dazhong Zhang , Berkat S. Tung , Roberto Garcia, Jr. , Hyeonkuk Jeong , Yan Yang , David A. Eldred , Elizabeth C. Cranfill , Andrew Yanowitz , Ting Chen , David D. Kuo
IPC分类号： H04M3/00 , H04N7/15 , H04N7/14
CPC分类号： H04N7/141 , G06F3/04817 , G06F3/04842 , G06F3/04886 , G06F9/451 , G09G5/14 , H04M1/72583 , H04N5/2258 , H04N5/2624 , H04N5/272 , H04N7/147 , H04N7/15
摘要： Some embodiments provide a method for allowing a first device that is in a video conference with a second mobile device to remotely control the second mobile device. The method sends images captured by a camera of the first device to the second device. The method receives images captured by a camera of the second device. The method sends a command through a communication channel of a real-time communication session to the second device. The command is for instructing the second device to perform an operation that modifies the images captured by the camera of the second device.
摘要翻译：一些实施例提供了一种用于允许与第二移动设备进行视频会议的第一设备来远程控制第二移动设备的方法。该方法将由第一设备的照相机拍摄的图像发送到第二设备。该方法接收由第二设备的相机拍摄的图像。该方法通过实时通信会话的通信信道向第二设备发送命令。该命令用于指示第二设备执行修改由第二设备的相机拍摄的图像的操作。

80. 发明授权

US08737479B2 Encoding mode pruning during video encoding 有权
标题翻译：视频编码时的编码模式修剪
公开(公告)号：US08737479B2
公开(公告)日：2014-05-27
申请号：US13333635
申请日：2011-12-21
申请人： Roger Kumar , Thomas Pun , Hsi Jung Wu
发明人： Roger Kumar , Thomas Pun , Hsi Jung Wu
IPC分类号： H04N7/12 , H04N7/26 , H04N7/36
CPC分类号： H04N19/00151 , H04N19/107 , H04N19/109 , H04N19/11 , H04N19/119 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/147 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/197 , H04N19/513 , H04N19/61
摘要： A method for encoding a first set of pixels in a first image in a sequence of images is described. From a set of encoding modes, the method selects a first mode for encoding the first set of pixels. The method then determines whether encoding the first set of pixels in the first mode satisfies a set of quality criteria. The method foregoes encoding the first set of pixels in a second mode from the set of encoding modes, when the first mode encoding satisfies the set of quality criteria. The method also provides a video encoding method that examines several different methods for encoding a set of pixels in a first image. From a list of possible encoding modes, the method eliminates a set of encoding modes that are not likely to provide a suitable encoding solution. The method then examines different encoding solutions based on the remaining encoding modes in the list.
摘要翻译：描述了用于对图像序列中的第一图像中的第一组像素进行编码的方法。从一组编码模式中，该方法选择用于对第一组像素进行编码的第一模式。该方法然后确定在第一模式中对第一组像素进行编码是否满足一组质量标准。当第一模式编码满足质量标准的集合时，该方法放弃在编码模式集合中以第二模式编码第一组像素。该方法还提供一种视频编码方法，其检查用于对第一图像中的一组像素进行编码的几种不同方法。从可能的编码模式的列表中，该方法消除了不可能提供合适的编码解决方案的一组编码模式。然后，该方法基于列表中的剩余编码模式来检查不同的编码方案。

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